Those companies listed below are certified by LRQA to ISO 3834 according to various scopes.
If you would like more information about getting certified for ISO 3834, or if you are a current client and would like to request the ISO 3834 approval mark, contact us here and we'll get right back with you.
| Country | Client Name | Client's Full Address | Product Name | Approved Product Scope | Expiration Date |
| Argentina | HAIZEA SICA S.A. | Jacob 2950, 3080 Esperanza, Santa Fe, Argentina | ISO 3834-2:2005 (LRV Ltd.) | Fabrication of onshore wind towers and auxiliary structures | 11 November 2021 |
| Austria | Flowserve (Austria) GmbH | Industriastr. B/6, 2345 Brunn am Gebirge, Austria | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of pumps and pipings. | 29 September 2020 |
| Austria | Liebherr-Werk Nenzing GmBH | Dr.-Hans-Libherr-Strasse 1, 6710 Nenzing, Austria | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of marine cranes and port crane solutions. | 17 June 2021 |
| Austria | voestalpine Giesserei Traisen GmbH | Mariazeller Str. 75, 3160 Traisen, Austria | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Production welding with or without heat treatment of steel and nodular iron castings. | 13 November 2020 |
| Belgium | Alteco N.V. | T.a.v. Crediteurenadministratie Melkerijstraat 54 ,Belgium,3110 | ISO 3834-2:2005 (Netherlands) | 14 April 2021 | |
| Belgium | Bilfinger ROB N.V. | Boereveldseweg 4- Haven 1062 ,Belgium,2070 | ISO 3834-2:2005 (Netherlands) | Construction of piping systems: pipe, fittings, flanges, in line instruments, valves. | 08 February 2021 |
| Belgium | Deprest N.V. | Frank Van Dyckelaan 24 ,Belgium,9140 | ISO 3834-2:2005 (Netherlands) | Design, manufacture of process plant machinery and equipment for the (petro-) chemical, pharmaceutical and food industry, including associated welding controls in accordance with the requirements of EN ISO 3834-2 | 07 October 2018 |
| Belgium | Engicon nv | Broelstraat 20, 8530 Harelbeke, Belgium | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of pressure vessels and components for pressure vessels. | 31 March 2019 |
| China | Avanti Wind Systems Manufacturing (Shanghai) Co., Ltd. | Building 4 NO.518 Gangde Road Xiaokunshan Town Songjiang District,China | ISO 3834-2:2005 (Netherlands) | Fabrication of steel and aluminum constructions for use as tower internals of wind turbine towers, including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 06 August 2020 |
| China | Avanti Wind Systems Manufacturing (Tianjin) Co., Ltd. | Building 31, Jinbin Development Factory No 156, Nanhai Road Economic and Technological,China,300457 | ISO 3834-2:2005 (Netherlands) | Fabrication of steel and aluminum constructions for use as tower internals of wind turbine towers, including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 24 May 2020 |
| China | BlueScope Buildings (Guangzhou) Ltd. | Guangdong ,China,510530 | ISO 3834-2:2005 (Netherlands) | Manufacture of pre-engineered steel building systems in accordance with the requirements of ISO 3834 – 2 : 2005 | 05 July 2018 |
| China | CECO Zhongli Industrial Technology Jiangyin Co. | No. 23 Park Road, Jiangyin, China | ISO 3834-2:2005(LRQA Deutschland GmbH) | Manufacture of dampers and auliliaries (custom built). | 15 December 2019 |
| China | CECO Zhongli Industrial Technology Jiangyin Co. Ltd. | No. 23 Park Road, Qiaoqi, Xuxiake Town, Jiangyin, Jiangsu Province, China | ISO 3834-2:2005 (Germany) | Manufacture of dampers and auxiliaries (custom built) in accordance with the requirements of ISO 3834 – 2 : 2005 | 15 December 2019 |
| China | China Railway Baoji Bridge Group Co., Ltd. / China Railway Baoji Bridge (Yangzhou) Co., Ltd. | Xinba, Lidian Town Guangling District ,China,225107 | ISO 3834-2:2005 (Netherlands) | Steel constructions for using road bridge, railway bridge, steel tower and steel structure in accordance with the requirements of ISO 3834 – 2 : 2005 | 15 October 2020 |
| China | Dongguan City Laigang Steel Structure Co. Ltd. / Shandong Laigang Construction Co., Ltd. Dongguan Branch | Longjiantian Industrial Park Huangjiang Town ,China,523765 | ISO 3834-2:2005 (Netherlands) | Sale and manufacture of Steel Structure for Equipment and Pipe Rack Support; Civil and Industrial Construction including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 01 June 2019 |
| China | Fong's National Eng | 17-19 Lixin Road, Danzhutou Industrial Zone, Nanwan Sub-District, Longgang District, Shenzhen City, 518114, China | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of pressure vessels, heat exchangers and associated pipework. | 30 September 2020 |
| China | Haarslev Machinery (Xuzhou) Co., Ltd. | No. 18, Miaoshan Road ,China,221004 | ISO 3834-2:2005 (Netherlands) | Manufacture of equipment for rendering and pet food, by-products from fish, odor treatment, industrial drying, including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 15 October 2020 |
| China | Hebei Capital Energy-Efficient Equipment Co., Ltd. | Chengnan New AreaYanshan County ,China, | ISO 3834-2:2005 (Netherlands) | Welding of coiled barrels, pump bodies and pipe systems, including associated welding controls in accordance with the requirements of ISO 3834 – 2: 2005 | 07 Dec. 2019 |
| China | Howden Hua Engineering Co., Ltd. | Shandong ,China,264205 | ISO 3834-2:2005 (Netherlands) | Sale, design and manufacture of rotary regenerative air pre-heaters, gas re-heaters, compressors, blowers, cooling fans and industrial fans to various specifications, provision of installation and after sales services to above products including associated welding controls in accordance with the r | 20 April 2021 |
| China | Jiangsu Daming Precision Manufacturing Co.,Ltd | No. 2 Tianqi Road, Wuxi City, Jiangsu Province, PR, China | ISO 3834-2:2005 (LRV Ltd.) | Welded sheet metal structure | 27 November 2023 |
| China | Jiangsu Juxin Petroleum Steel Pipe Co., Ltd. | No.1 Dongzhuang RoadGuangling Industrial Park Guangling Industrial Park ,China,225004 | ISO 3834-2:2005 (Netherlands) | Sale and Manufacture of Steel Structure for Equipment including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 06 August 2021 |
| China | Jiangyin Runye Heavy Industry Machinery Co, Ltd. | No.2 Donglin Road Donglin industrial park Zhouzhuang Town,China,214423 | ISO 3834-2:2005 (Netherlands) | Manufacture of mechanical parts, including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 23 March 2020 |
| China | MAN Diesel & Turbo China Production Co., Ltd. | Ltd. No.9 Fengming Road, Wujin High-Technology Development,China,213164 | ISO 3834-2:2005 (Netherlands) | Manufacturing of turbo machinery including PGSK compressors, RG compressors, RIKT, steam turbines, base plates and pipe systems, gas turbine including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 15 June 2020 |
| China | Shanghai Ambor Manufacturing Ltd. /Shanghai Ambor Industries Ltd. | 456 Xiaonan Road, Fengxian District ,China,201401 | ISO 3834-2:2005 (Netherlands) | Manufacture of steel structure as lighting poles and wind energy poles and towers including associated welding controls in accordance with the requirements of ISO 3834 – 2 : 2005 | 19 April 2019 |
| China | Shanghai Seaflower Heavy Industry Co., Ltd | No. 558, Jianguo Road North Song Village Fengxian District,China,201400 | ISO 3834-2:2005 (Netherlands) | Sale and Manufacture of Steel Structure for Equipment including associated welding controls in accordance with the requirements of ISO 3834 – 2: 2005 | 11 August 2019 |
| China | Tianjin Lasing Technology Development Co., Ltd. | Shunfan Road Jinghai Development Zone ,China,300104 | ISO 3834-2:2005 (Netherlands) | Manufacture of Steel Constructions and Metal Parts used for Industry in accordance with the requirements of ISO 3834 – 2 : 2005 | 01 February 2021 |
| China | Wuxi Huaneng Heat Energy Euipment Co., Ltd. | No. 21 Hehuan West Road, Hudai Town, China | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of power plant equipment and spare parts . | 25 May 2020 |
| Czech Republic | CT-Products s.r.o. | Lesní 752 ,Czech Republic,749 01 | ISO 3834-2:2005 (Netherlands) | Manufacturing of off-shore containers including assembly of accessories. Manufacturing of stain less steel machines, equipments and tanks according to the customer's specifications, including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 17 February 2021 |
| Czech Republic | ELMEP s.r.o. | V Ruzovem udoli 556 ,Czech Republic,278 01 | ISO 3834-2:2005 (Netherlands) | Design, development, production, distribution, assembly, installation, commissioning, maintenance and service of analyzers and chromatographs, control systems, information and database technologies, instrumentation and control, electrical equipment, cabinets, sampling systems, analyzer houses, indus | 01 July 2020 |
| Czech Republic | NC Line a.s. | Bauerova 491/10 Pisárky ,Czech Republic,603 00 | ISO 3834-2:2005 (5 yr cycle) | Welding of metal sheets, castings and pipes according to the customer specifications. | 19 August 2020 |
| Czech Republic | Uponor Infra Fintherm a.s. | Za trati 197 ,Czech Republic,196 00 | ISO 3834-2:2005 (Netherlands) | Design and manufacture of thermal pre-insulated pipe systems including associated welding controls in accordance with the requirements of EN ISO 3834-2. | 20 December 2021 |
| Estonia | HANZA Mechanics Narva, | Kulgu 5, 20104, Narva, Estonia | ISO 3834-2:2005 (LRV Ltd.) | Welded and machined components and assemblies for ventilation systems, working vehicle, electric and lifting industry applications. | 24 May 2023 |
| Estonia | Stera Saue AS | Tule 22, EST-76505 SAUE, HARJUMAA, Estonia | ISO 3834-2:2005 (LRV Ltd.) | Welded and machined components and assemblies for ventilation systems, working vehicle, electric and lifting industry applications. | 04 June 2022 |
| Finland | Arctech Helsinki Shipyard Oy | Laivakatu 1 (PL 132) ,Finland,00150 | ISO 3834-2:2005 (Netherlands) | Ship design, block assembly and outfitting including associated welding controls in accordance with the requirements of EN ISO 3834-2. | 30 August 2021 |
| Finland | FERRUM GROUP OY | Tehtaantie 17 and 23, 60100 Seinäjoki, Finland | ISO 3834-2:2005 (LRV Ltd.) | Prefabrication of steel products, welded assemblies and heat treatment | 11 October 2023 |
| Finland | HANZA Metalliset Oy | Ahjotie 3,79700, Heinävesi, Finland | ISO 3834-2:2005 (LRV Ltd.) | Metal constructions for machine parts and modules | 24 May 2023 |
| Finland | HT LASER OY | Rakentajantie 26, 20780 Kaarina, Finland | ISO 3834-2:2005 (LRV Ltd.) | Constructions for vehicles and steel constructions | 05 September 2023 |
| Finland | KONEPAJA TIMEKA OY | PAJATIE 3, 23100 MYNÄMÄKI , Finland | ISO 3834-2:2005 (LRV Ltd.) | Welded components for equipment intended to automation and robot industry | 18 February 2023 |
| Finland | LOHKOASENNUS OY | Suojatie 5, Halli 18-1, 26100 Rauma, Finland | ISO 3834-2:2005 (LRV Ltd.) | Steel and aluminum constructions, port equipment, car ramps and passenger gangways | 06 February 2023 |
| Finland | Rautalaaki Oy | Harkkotie 10, 33470 Ylöjärvi, Finland | ISO 3834-2:2005 (LRV Ltd.) | Manufacturing, machining and assembly of multidisciplinary projects of steel constructions for electric, concrete and mining industrie | 28 December 2021 |
| Finland | Stera Group Oy | Assesorinkatu 12 ,Finland,20780 | ISO 3834-2:2005 (Netherlands) | Manufacturing welded constructions in accordance with client specification including associated welding controls of ISO 3834-2:2005 requirements. | 30 August 2021 |
| Finland | Stera Technologies Oy | Valtaimenkuja 80, 30100 FORSSA, Finland | ISO 3834-2:2005 (LRV Ltd.) | Welded and machined components and assemblies for ventilation systems, working vehicle, electric and lifting industry applications. | 04 June 2022 |
| Finland | Stera Technologies Oy | Asessorinkatu 12, 20780 KAARINA, Finland | ISO 3834-2:2005 (LRV Ltd.) | Welded and machined components and assemblies for ventilation systems, working vehicle, electric and lifting industry applications. | 04 June 2022 |
| Finland | Stera Technologies Oy | Varikkotie 2, 73600 KAAVI, Finland | ISO 3834-2:2005 (LRV Ltd.) | Welded and machined components and assemblies for ventilation systems, working vehicle, electric and lifting industry applications. | 04 June 2022 |
| Finland | Telatek Service Oy | Varvintie 53, FI-92100 Raahe, Finland | ISO 3834-2:2005 (LRV Ltd.) | Steel components and constructions, repair welding , weld surfacing and special fabrications. | 31 December 2021 |
| Finland | Telatek Oy | Posiontie 30, 93400 Taivalkoski, Finland | ISO 3834-2:2005 (LRV Ltd.) | Products of steel and aluminum constructions for marine, off-shore, mining, energy and process industries, railway vehicles. | 22 December 2021 |
| France | Guichon Valves SA | 26 rue Paul Giro, 73000 Chambéry, France | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of industrial valves. | 12 May 2019 |
| France | OELTECHNIK FRANCE SARL | Zone Artisanale, 6 Rue des Artisans. 68140 MUNSTER - France | ISO 3834-2:2005 (LRV Ltd.) | Water and lube oil systems, seal gas panels and gas skids, heat exchangers and pressure | 27 January 2021 |
| France | SICA2M | Rue des Etats Unis., 72540 LOUE - France | ISO 3834-2:2005 (LRV Ltd.) | General Fabrication of Metallic Equipment in Carbon Steel, Austenitic Stainless Steel, and others alloys steel, for Industrial field. | 14 March 2022 |
| Germany | ACHENBACH + DEUKER GmbH & Co | Wenschstr. 15, 57078 Siegen, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of pressure vessels and piping. | 31 August 2019 |
| Germany | Berendes Metalltechnik GmbH | Bergstr. 63 A, 56203 Hohr-Grenzhausen, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of steel Construction components. | 30 June 2020 |
| Germany | Boller GmbH & Co. KG | Dieselstr. 15, 57277 Neunkirchen, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of fittings, components and findings | 15 August 2019 |
| Germany | Claudius Peters Projects GmbH | Schanzenstraße 40, 21614 Buxtehude, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Construction welding to turbine components. | 31 January 2021 |
| Germany | Dango & Dienenthal Maschinenbau GmbH | Hagener Str. 103, 57072 Siegen, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Mounting of piping systems for power plants and industrial plants. | 28 June 2021 |
| Germany | Dockweiler AG | An der Autobahn 10/20, 19306 Neustadt-Glewe, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of pressure vessels, semi-finished products and components. | 15 February 2019 |
| Germany | EEW Bergrohr GmbH | Siegstr. 70, 57076 Siegen, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of SAQ carbon and stainless steel tubulars | 31 October 2019 |
| Germany | EEW Pickhan Unformtechnik GmbH | Birlenbacher Str. 26, 57078 Siegen, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of refrigeration and membrane compressed air dryer and associated piping. | 31 May 2020 |
| Germany | EEW Special Pipe Constructions GmbH | Ost-West-Str. 12, 18147 Rostock, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of tube coils, flat tube coils, half pipe tube coils and general pipe works. | 30 January 2021 |
| Germany | Erndtebrücker Eisenwerk GmbH & Co. KG | Im Grünewald 2, 57339 Erndtebrück, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of pressure retaining vessel parts, piping and applicable parts of carbon, low- and high-alloy steel with and without heat treatment. | 15 December 2018 |
| Germany | G. Klappert Apparatebau GmbH | Niederndorferstr. 20, 57258 Freudenberg, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Welded or screwd parts and components such as valves, tube sections and housings. | 13 July 2020 |
| Germany | GOH Behälter- und Anlagenbau GmbH | Lützelau 8, 57250 Netphen, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of pressure vessels, piping and components made of carbon steel or austenitic steel. | 16 June 2019 |
| Germany | GOH Filtertechnik GmbH | Scharnhorststr. 7, 35260 Stadtallendorf, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of welded parts without heat treatment for pressure vessels, fabricated bends, piping and components. | 20 November 2019 |
| Germany | Grund-Anlagenbau Wasser- & Umwelttechnik GmbH & Co KG | Jupiterweg 33, 24983 Handewitt, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of stainless steels tubes and fittings DN 4 to DN 500. | 11 July 2021 |
| Germany | Henkel Rohrverformungstechnik GmbH | Setzer Str. 8, 57223 Kreuztal, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | 22 February 2021 | |
| Germany | Jakob Hülsen GmbH & Co. KG | Maysweg 14, 47918 Tönisvorst, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Marine, truck and rail loading arms, swivel joints, couplings and loading stations for gaseous and liquid media as well as control equipment | 01 October 2021 |
| Germany | K.A. Welsch Apparatebau | In der Au 19, 57290 Neunkirchen, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Construction welding of tank containers and pressure vessels. | 28 February 2021 |
| Germany | Liebherr- MCCtec Rostock GmBH | Liebherrstrasse 1, 18146, Rostock, Germany | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of marine cranes and port crane solutions. | 17 June 2021 |
| Germany | Liebherr- MCCtec Rostock GmBH | Betriebstel Lubmin, Latzower Str. 1, 17509, Rubenow, Germany | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of marine cranes and port crane solutions. | 17 June 2021 |
| Germany | MAN Diesel & Turbo SE | Steinbrinkstr. 1, 46145 Oberhausen/Berlin, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of pressure equipment and welded components of carbon and low alloyed steel, aluminum, austenitic and duplex steel as well as teheir combination. | 31 January 2019 |
| Germany | Maschinenbau Lorenzen | Rödemis-Hallig 7, 25813 Husum, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of piping, filters and pressure equipment parts. | 11 April 2020 |
| Germany | MEIER Gastechnik GmbH & Co. KG | Urselbachstr. 77a, 61440 Oberursel, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of SAW carbon and stainless steel tubulars. | 30 September 2020 |
| Germany | OTTO JUNKER GmbH | Jägerhausstr. 22, 52152 Simmerath-Lammersdorf, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Pressure vessels and heat exchangers. | 04 December 2018 |
| Germany | Peter Heib - Anlagen- und Rohrleitungsbau | Kolpingstr. 24, 66839 Schmelz, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of cranes, hoists, load turning devices and crane components. Welding of constructions of low carbon steel qualities. | 20 June 2019 |
| Germany | ProDEKon Blechtechnik GmbH & Co KG | Carl-Borgward-Str. 12, 33335 Gütersloh, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture, repair and alteration of pressure vessels, max 6 m diameter, 120 mm wall thickness, 60 m length. | 06 December 2019 |
| Germany | R + H Behälterbau GmbH | Schleswiger Str. 73, 24986 Mittelangeln/OT Satrup, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | 16 February 2020 | |
| Germany | R. Nückel GmbH | Eiserfelder Str. 206a, 57072 Siegen, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacturer of welded covers without post weld heat treatment | 28 February 2021 |
| Germany | RIFOX-Hans Richter GmbH Spezialarmaturen | Bertha-von-Suttner-Str. 9, 28207 Bremen, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of welded parts of carbon and low-alloyed steel with and without heat | 15 February 2021 |
| Germany | Rohrleitungsbau Kothes GmbH | Schloßallee 62, 40597 Düsseldorf Benrath, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of pressure vessels, apparatus and pipping within the scope or existing welding procedures. | 09 September 2021 |
| Germany | Schütz GmbH & C0. KGaA | Berggarten 1, 56427 Siershahn, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of casing parts. | 26 October 2020 |
| Germany | Siemens AG | Frankenstraße 70-80, 90461 Nürnberg, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of welded pressure vessels made of carbon steels and stainless steels. | 31 May 2021 |
| Germany | SVT GmbH | Eisenwerkstr. 21-27, 58332 Schwelm, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of weld components made of carbon steel or austeritic steel | 31 August 2019 |
| Germany | ultratroc gmbh | Ochsenweg 73, 24941 Flensburg, Germany | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of weld components made of catbon- and austenitic steel and aluminum alloy steel. | 05 October 2020 |
| Germany | VETTER Krahntech GmbH | Siegtalstr. 22, 57080 Siegen, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of pressure vessels and piping made of austenitic steel sub-group 8.1 (ISO/TR 15608). | 11 December 2019 |
| Germany | voestalpine Giesserei Linz GmbH | Voest-Alpine-Str. 3, 4020 Linz, Austria | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of turbo machinery and piping systems. | 20 October 2020 |
| Germany | WEW Container Systems GmbH | Ringstraße 65a, 57586 Weitefeld, Germany | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of piping systems. | 12 March 2019 |
| Germany | Wilbers Werkstätten GmbH | Stockholmer Str. 8 ,Germany,48455 | ISO 3834-2:2005 (Netherlands) | 05 July 2019 | |
| Hungary | Heurtey Petrochem Manufacturing SA | Str. Santierului,Nr. 39, 120226 Buzau, Hungary | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of welded components made of carbon steel and austenic steels. | 16 June 2019 |
| Hungary | Komplex Üjgesti Acelzerkezet és Gépgyártó Zrt | Soroksári út 48, 1085 Bukarest, Hungary | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of welded components, machine parts and units. | 05 February 2020 |
| India | ISGEC HEAVY ENGINEERING LTD. (Boiler Manufacturing & Piping Division) | RATANGARH, (Dist.) YAMUNANAGAR-135001, HARYANA, INDIA | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of Boilers, boiler components and Pipings. | 23 May 2021 |
| Indonesia | PT. McDermott Indonesia | Jalan Bawal No.1, Batu Merah, Batu Ampar, Kota Batam, Kepulauan Riau 29452, Indonesien | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of steel structure or components for the energy components. | 08 March 2021 |
| Italy | AXO CONSTRUCTION srl | Via Giulio Pastore, 15 and Via Achille Grandi, 1-3, 48123 Ravenna (Ra),Italy | ISO 3834-2:2005 (LRV Ltd.) | Manufacture and erection of welded Steel Structures and Piping Systems. | 11 November 2023 |
| Italy | BAZZANA F.lli srl | Via G. Falcone 10, 25010 Gambara (BS) – Italy | ISO 3834-2:2005 (LRV Ltd.) | Execution of weld overlay for valve bodies and components. | 21 August 2012 |
| Italy | CORDIOLI & C. SPA | Via Del Lavoro, 1, 37067 Valeggio Sul Mincio (VR) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Fabrication of Steel structures for railway and roadway bridges and civil-industrial buildings. | 21 January 2021 |
| Italy | DUE EMME S.p.A | Frazione Montegemoli, Via Brenta 21, Operative Unit: Frazione Montegemoli, Via Adige 28, 57025 Piombino (Li) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Design and manufacturing of baseplates, piping, pressure vessels and steel structures. | 21 October 2022 |
| Italy | F.lli Bertoni S.r.l. | Via Monte Sagro, 19021 Arcola (SP) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Steel and aluminum structures for industrial applications. | 21 June 2021 |
| Italy | FAI OFFICINE DI CARVICO SPA | Via Don Pedrinelli, 36, 24030 Carvico (Bg) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of pressure vessel and components for oil and gas industry for offshore and onshore, pipeline and sealine facilities and water intakes for power generation and desalination plants. | 09 April 2023 |
| Italy | FERRETTI INTERNATIONAL S.r.l. | Via G.Marconi 20, 24044 Dalmine (BG) Italy | ISO 3834-2:2005 (LRV Ltd.) | Steel Structures assembly for buildings and industrial plants. Piping and pressure parts assembly for industrial Plants | 29 November 2020 |
| Italy | Filtrex S.r.l. | Via Rubattino, 94B, 20134 Milano (Mi) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Filters type simplex, duplex, self-cleaning, automatic, six way valves, coalescent units, skid mounted system, ballast water treatment systems for marine, industrial and oil & gas use. | 31 October 2021 |
| Italy | IAL ENGINEERING SERVICES Ltd | La Retriate Rd, Gonzales Village, Guapo, Trinidad, W.I. | ISO 3834-2:2005 (LRV Ltd.) | Structural Steel, Process and Pressure Piping. | 07 October 2021 |
| Italy | ICS Industrial Construction Services SRL | C.da Piccoli, snc – Z.I. 72100 Brindisi (Br) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of piping, pressure vessel, boiler, steel structures and components for oil and gas industry for offshore and onshore, pipeline and sealine facilities and for power Generation and desalination plants. | 22 April 2023 |
| Italy | Industrie Meccaniche di Bagnolo Srl | Strada Paullese , 2, 26010 Bagnolo Cremasco (CR) Italy | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of heat exchangers, pressure vessels and reactors. | 23 February 2021 |
| Italy | LAINOX srl | Via Vicenza, 13, 36030 S. Vito di Leguzzano (VI), Italy | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of Pressure and Vacuum equipment | 17 June 2023 |
| Italy | MECC 2000 srl | Via Fiorentina, 4D, 42013 Casalgrande (Re) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Welding of Civil and Industrial Steel Structures and Components for Industrial Plant | 15 November 2023 |
| Italy | Micam s.a.s. di A. Arduini & C. | Via Campania, 67/69 , 20093 Cologno Monzese (Mi) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Pressure equipment and steel work for plants for chemical, petrochemical, pharmaceutical industry and ecological plants | 5th July 2022 |
| Italy | NABTESCO OCLAP Srl | Via della Rimembranza, 13, 10060 Piscina To – Italy | ISO 3834-2:2005 (LRV Ltd.) | Door system, steps, elevators for disable lifting and equipment for public and railway transport vehicles; platform screen doors for underground stations. | 27 November 2021 |
| Italy | O.ME.R. SRL | Via A. Russello, 1, 90044 Carini (Pa) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Welding of stainless steel and light alloys carpentry for railway and wheeled vehicles | 08 December 2020 |
| Italy | PIANA SpA | Via Primo Levi, 3, 27049 Stradella (Pv), Italy. | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of welded carbon, low carbon, high yield carbon, alloy, stainless, ferritic-austenitic steel and non-ferrous alloy fittings and special pieces up to 120" and associated pipelines products. | 27 September 2023 |
| Italy | ROSETTI MARINO SpA | Via Trieste 230, 48122 Ravenna, Italy | ISO 3834-2:2005 (LRV Ltd.) | Design, engineering project management, procurement and construction of offshore and onshore plants and modules, including steel structures. Design engineering and fabrication of pressure vessels and process packages | 12 December 2021 |
| Italy | ROSETTI MARINO SpA | Via del Marchesato 37, 48122 Marina di Ravenna (Ravenna), Italy | ISO 3834-2:2005 (LRV Ltd.) | Design, engineering project management, procurement and construction of offshore and onshore plants and modules, including steel structures. Design engineering and fabrication of pressure vessels and process packages | 12 December 2021 |
| Italy | ROXA IMPIANTI S.r.l. | Via Kennedy, 7/9, 24030 Solza (BG) Italy | ISO 3834-2:2005 (LRV Ltd.) | Execution of weld overlay and special welding. | 25 September 2020 |
| Italy | S.A.M.E.C. S.P.A. COSTRUZIONI MECCANICHE | Via IV Novembre, 1, 26022 Castelverde (Cremona) - Italy | ISO 3834-2:2005 (LRV Ltd.) | Pressure vessels in carbon steel, stainless steel and special alloys. Plants for handling and storage of bulk, solid and dust material. Steel structures medium & heavy. | 17 October 2017 |
| Italy | SIDERTAGLIO CALANDRATURA srl | Via Marzotto, 9, 36031 Povolaro di Dueville (VI) – Italy | ISO 3834-2:2005 (LRV Ltd.) | Welded Pipelines, cylinders for papermaking and textile industries, parts of pressure vessels and tanks. | 29 June 2022 |
| Italy | WORTHINGTON S.p.A. | Via Rossini, 90/92, 20033 Desio (Mi) Italy | ISO 3834-2:2005 (LRV Ltd.) | Welding of castings and piping in carbon, austenitic, duplex and super duplex steel and non-ferrous alloys for engineered pumps, spares and related pumping systems. | 29 November 2020 |
| Malaysia | One Subsea Malaysia Systems Sdn. Bhd. | Lot D33-35 Jalan DPB/6 Pelabuhan Tanjung Pelepas Gelang Patah,Malaysia,81560 | ISO 3834-2:2005 (5 yr cycle) | Design, manufacture and testing of Subsea Wellheads, Christmas Trees, Flowline Connection Systems and Drill Through Equipment including associated welding controls in accordance with the requirements of ISO 3834-2: 2005. | 12 March 2021 |
| Malaysia | One Subsea Malaysia Systems Sdn. Bhd. | Lot D33-35 Jalan DPB/6 Pelabuhan Tanjung Pelepas Gelang Patah,Malaysia,81560 | ISO 3834-2:2005 (Netherlands) | Design, manufacture and testing of Subsea Wellheads, Christmas Trees, Flowline Connection Systems and Drill Through Equipment including associated welding controls in accordance with the requirements of ISO 3834-2: 2005. | 12 March 2019 |
| Netherlands | ABUCO B.V. | Havenkade 26 ,Netherlands,1775 BA | ISO 3834-2:2005 (Netherlands) | Repair, modification, manufacturing and assembly of pipe- and steel constructions and pipe and faucet repairs, including associated welding controls in accordance with the requirements of EN-ISO 3834-2. | 31 October 2019 |
| Netherlands | Addit B.V. | Archimedesweg 2 ,Netherlands,5928 PP | ISO 3834-2:2005 (Netherlands) | Designing, developing, engineering, manufacturing, assembly, testing, purchasing, the managing of the (supply) chain and the stock-controlled delivering of parts, (application) systems, equipment and machines, from prototypes to large series, to customers. Including associated welding controls in a | 31 March 2020 |
| Netherlands | ALL Con B.V. | Business Park Stein 205 ,Netherlands,6181 MB | ISO 3834-2:2005 (Netherlands) | 12 July 2022 | |
| Netherlands | Almi Machinefabriek Vriezenveen B.V. | Wierdenseweg 82-86 ,Netherlands,7671 JK | ISO 3834-2:2005 (5 yr cycle) | 18 February 2019 | |
| Netherlands | Array Industries B.V. | Hoogeveenenweg 29 ,Netherlands,2913 LV | ISO 3834-2:2005 (5 yr cycle) | Design, manufacturing & erection at site of flue gas systems, steel constructions and mechanical installations including associated control of welding processes in accordance with the requirements. | 31 March 2020 |
| Netherlands | Array Industries B.V. | Hoogeveenenweg 29 ,Netherlands,2913 LV | ISO 3834-2:2005 (Netherlands) | -- | 31 March 2022 |
| Netherlands | Bos Nieuwerkerk B.V. | Hoogeveenenweg 5 ,Netherlands,2913 LV | ISO 3834-2:2005 (Netherlands) | Developing, engineering, production, mounting and inspection of custom-made products in the field of metal chimneys, ducting, valves, noise- and vibration reducers and loading spouts, including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 08 July 2023 |
| Netherlands | Breman Machinery Holding B.V. | Sasdijk 20 ,Netherlands,8281 BM | ISO 3834-2:2005 (5 yr cycle) | Structures and semi-finished products relating to pressure vessels, the on- and offshore oil & gas industry en other industries including associated welding controls in accordance with the requirements of ISO 3834 - 2:2005. | 08 December 2022 |
| Netherlands | Broeze Nijverdal B.V. | Industrieweg 10 ,Netherlands,7442 CV | ISO 3834-2:2005 (Netherlands) | The development, production and installation of stairs, railings, platforms, internal material handling systems and steel structures including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 04 December 2022 |
| Netherlands | Bronswerk Heat Transfer B.V. | Stationsweg 22 ,Netherlands,3862 CG | ISO 3834-2:2005 (Netherlands) | Heat transfer installations and equipment such as pressure vessels, air coolers, shell and tube heat exchangers, condensers, boilers and compressors. Including fans, steel structures, pipelines and instrumentation. | 18 November 2020 |
| Netherlands | Clement Metaal & Techniek B.V. | Vliesvenweg 6 ,Netherlands,6002 NM | ISO 3834-2:2005 (Netherlands) | 14 July 2020 | |
| Netherlands | Constructiebedrijf de Groot B.V. | Ambachtsring 34 ,Netherlands,1969 NH | ISO 3834-2:2005 (5 yr cycle) | 12 September 2023 | |
| Netherlands | Constructiebedrijf Loohuis B.V. | Kelvinstraat 23 ,Netherlands,7575 AS | ISO 3834-2:2005 (Netherlands) | 01 February 2020 | |
| Netherlands | Damen Anchor & Chain Factory (AKF) B.V. | Postbus 22 ,Netherlands,3100 AA | ISO 3834-2:2005 (Netherlands) | Hoisting- and towing equipment, anchors and chains. | 31 January 2019 |
| Netherlands | Damen Shiprepair Amsterdam B.V. | T.T. Vasumweg 125-131 ,Netherlands,1033 SG | ISO 3834-2:2005 (5 yr cycle) | Maintenance, repair and conversion of all kinds of vessels, including associated welding controls in accordance with the requirements of EN ISO 3834-2. | 01 December 2022 |
| Netherlands | Damen Shiprepair Rotterdam B.V. | Admiraal de Ruyterstraat 24 ,Netherlands,3115 HB | ISO 3834-2:2005 (5 yr cycle) | Performance of welding activities. | 25 January 2021 |
| Netherlands | Damen Shiprepair Vlissingen B.V. | Ritthemsestraat 500 Havennummer 1010 ,Netherlands,4389 PA | ISO 3834-2:2005 (Netherlands) | Maintenance, repair, refit, conversion of all types of vessels, offshore units and constructions. Hoisting- and towing equipment, anchors and chains. Construction and machining of large complex steel structures for the offshore market, maritime market and land based industry including associated w | 05 January 2022 |
| Netherlands | De Haan Special Equipment B.V. | Transistorweg 3 ,Netherlands,9503 GT | ISO 3834-2:2005 (Netherlands) | x | 30 April 2021 |
| Netherlands | DeMaCo Holland B.V. | Postbus 4 ,Netherlands,1723 ZG | ISO 3834-2:2005 (5 yr cycle) | Vacuüm systems, cryogenic equipment, transfer lines and special machinery. | 03 February 2019 |
| Netherlands | Discom B.V. | Staalindustrieweg 5 ,Netherlands,2952 AT | ISO 3834-2:2005 (Netherlands) | Design, production and sales of products and services for noise control and emission reduction, including associated welding controls in accordance with the requirements of ISO 3834-2: 2005. | 31 December 2021 |
| Netherlands | Dulasta Metaalbewerking B.V. | Industrieweg 58 ,Netherlands,7951 TA | ISO 3834-2:2005 (Netherlands) | 07 December 2020 | |
| Netherlands | ENGIE Services West B.V. | Albert Heijnweg 1 ,Netherlands,1507 EH | ISO 3834-2:2005 (Netherlands) | 22 December 2021 | |
| Netherlands | ENGIE Services West Industrie B.V. | Willingestraat 4 ,Netherlands,3087 AN | ISO 3834-2:2005 (5 yr cycle) | Piping and pressure vessels, steel constructions. | 31 January 2022 |
| Netherlands | ENGIE Services Zuid B.V. | Industrieweg 40 ,Netherlands,4538 AJ | ISO 3834-2:2005 (Netherlands) | Pressure vessels and piping in process installations. | 30 September 2021 |
| Netherlands | Eriks B.V. | Toermalijnstraat 5 ,Netherlands,1812 RL | ISO 3834-2:2005 (5 yr cycle) | Welding of stainless steel hose assemblies up to DN 200 and Ps 440 bar. | 19 November 2019 |
| Netherlands | FIB Industries B.V. | Einsteinweg 18 ,Netherlands,8912 AP | ISO 3834-2:2005 (Netherlands) | Design, manufacturing and delivery of process equipment, piping, beer delivery systems and general machine constructions to recognized standards and constructed from ferrous and non-ferrous metals including associated welding controls in accordance with the requirements of ISO 3834 -2:2005. | 31 January 2023 |
| Netherlands | GtS Construction B.V. | Timmerfabriekstraat 12 ,Netherlands,2861 GV | ISO 3834-2:2005 (Netherlands) | 06 September 2022 | |
| Netherlands | Harsveld Apparatenbouw B.V. | Leeghwaterweg 3 ,Netherlands,1951 NA | ISO 3834-2:2005 (Netherlands) | Design, production, repair and installation of process vessels, piping, heat-exchangers and plate works concerning paper-, steel-, dairy and petrochemical industries, including associated welding controls in accordance with the requirements of EN ISO 3834-2:2005. | 31 July 2022 |
| Netherlands | Hosokawa Micron B.V. | Postbus 98 ,Netherlands,7000 AB | ISO 3834-2:2005 (Netherlands) | Mechanical and thermal powder processing equipment for the chemical, mineral, metal, food and pharmaceutical industries. | 21 December 2020 |
| Netherlands | Huisman Equipment B.V. | Admiraal Trompstraat 2 ,Netherlands,3115 HH | ISO 3834-2:2005 (Netherlands) | On and offshore lifting equipment, drilling equipment subsea solutions, heavy transport solutions. | 31 December 2021 |
| Netherlands | IHC Vremac Cylinders B.V. | Oude Apeldoornseweg 33J ,Netherlands,7333 NR | ISO 3834-2:2005 (Netherlands) | x | 31 December 2019 |
| Netherlands | INNO-metaal B.V. / INNO-assembly B.V. | Hoogezijde 6 ,Netherlands,5626 DC | ISO 3834-2:2005 (5 yr cycle) | 21 December 2020 | |
| Netherlands | ITEQ Industries B.V. | Rijnerf 12 ,Netherlands,3861 PV | ISO 3834-2:2005 (Netherlands) | Welding of Mono-Parts and Complex Assemblies. | 13 December 2020 |
| Netherlands | Jos van der Lubbe Lasbedrijf Wero B.V. | Verbreepark 35 ,Netherlands,2731 BR | ISO 3834-2:2005 (5 yr cycle) | 08 October 2022 | |
| Netherlands | K. en W.A. van Rooijen B.V. | Albert Einsteinstraat 14 ,Netherlands,3261 LP | ISO 3834-2:2005 (Netherlands) | Pressure vessels, piping systems and related structures for the (petro-) chemical industry. | 04 January 2020 |
| Netherlands | Kepser Pro-Metaal B.V. | Simon Homburgstraat 12 ,Netherlands,5431 NN | ISO 3834-2:2005 (Netherlands) | 07 March 2023 | |
| Netherlands | Kooiman Apparatenbouw B.V. | Postbus 10 ,Netherlands,3350 AA | ISO 3834-2:2005 (Netherlands) | Design and manufacture of pressure vessels, heat exchangers and piping systems, including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 31 May 2023 |
| Netherlands | Kuyer Metaalwerken B.V. | Gildenstraat 35 ,Netherlands,3861 RG | ISO 3834-2:2005 (Netherlands) | Production and (sub)assembly of customer specified metal products and machines, including associated welding controls in accordance with the requirements of ISO 3834 -2:2005. | 31 October 2022 |
| Netherlands | Landustrie Sneek B.V. | Postbus 199 ,Netherlands,8600 AD | ISO 3834-2:2005 (5 yr cycle) | Design, production and erection of mechanical and electro technical installations for transport and treatment of water and waste water, as well as maintenance and repair of such installations, including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 30 April 2022 |
| Netherlands | Lasbedrijf Wilderink B.V. | Metaalstraat 16 ,Netherlands,7483 PD | ISO 3834-2:2005 (5 yr cycle) | Design and manufacture of pressure equipment and constructions including associated welding controls in accordance with the requirements of ISO 3834 -2:2005. | 05 April 2023 |
| Netherlands | M.C.A. "Alkmaar" B.V. | Pettemerstraat 17-23 ,Netherlands,1823 CW | ISO 3834-2:2005 (Netherlands) | Manufacture, assembly, revision and maintenance of steel construction works and hoist installations including associated welding controls in accordance with the requirements of ISO 3834 -2:2005. | 14 October 2019 |
| Netherlands | Machinefabriek Boessenkool B.V. | Turfkade 13 ,Netherlands,7602 PA | ISO 3834-2:2005 (5 yr cycle) | Design, manufacture and repair of mechanical equipment and structures to customer specifications. | 31 August 2023 |
| Netherlands | Machinefabriek Emce B.V. | 's-Gravendamseweg 53 b ,Netherlands,2215 TC | ISO 3834-2:2005 (5 yr cycle) | 04 February 2023 | |
| Netherlands | Machinefabriek Geurtsen Deventer B.V. | Postbus 600 ,Netherlands,7400 AP | ISO 3834-2:2005 (Netherlands) | The design and production of special machinery, equipment and parts according to customer or own specifications and maintenance, overhaul and service for the food-, paper-, textile-, chemical-, pharmaceutical-, offshore- and packaging industry, including associated welding controls in accordance wit | 30 September 2022 |
| Netherlands | Machinefabriek H. Zwienenberg B.V. | Janninksweg 1 ,Netherlands,7496 PT | ISO 3834-2:2005 (Netherlands) | 13 November 2019 | |
| Netherlands | Marflex Europe B.V. | Louis Pasteurstraat 8 ,Netherlands,3261 LZ | ISO 3834-2:2005 (Netherlands) | Design, production, testing commissioning and servicing of deepwell pumpsystems and related equipment for the marine industry and offshore, included associated welding controls in accordance with the requirements of ISO 3834-2: 2005. | 12 June 2021 |
| Netherlands | Maverick Valves Manufacturing HQ B.V. | Kalundborg 10 ,Netherlands,5026 SE | ISO 3834-2:2005 (Netherlands) | Design, production, assembly and testing of (pressure) valves | 28 November 2019 |
| Netherlands | Megacon Apparatenbouw B.V. | Witte Hekweg 88 ,Netherlands,1951 HL | ISO 3834-2:2005 (Netherlands) | 30 April 2022 | |
| Netherlands | Mercon Montage B.V. | Krinkelwinkel 6-8 ,Netherlands,4202 LN | ISO 3834-2:2005 (Netherlands) | 31 March 2023 | |
| Netherlands | Metaalbewerking Elmar B.V. | IJsselveld 18 ,Netherlands,3417 XH | ISO 3834-2:2005 (Netherlands) | x | 29 December 2021 |
| Netherlands | Microtechniek Groep B.V. | Lijndenweg 9-15 ,Netherlands,1948 ND | ISO 3834-2:2005 (Netherlands) | Support frames, Machine frames and Machine parts | 30 April 2023 |
| Netherlands | Mourik Techniek B.V. | Postbus 2 ,Netherlands,2964 ZG | ISO 3834-2:2005 (5 yr cycle) | 21 September 2019 | |
| Netherlands | Mouw Hoedliggers B.V. | Boylestraat 22 ,Netherlands,6718 XM | ISO 3834-2:2005 (Netherlands) | 26 May 2019 | |
| Netherlands | NEWES B.V. | Alfred Marshallstraat 5 ,Netherlands,7559 SE | ISO 3834-2:2005 (5 yr cycle) | 13 September 2022 | |
| Netherlands | Nijkamp Energiedistributie B.V. | Wieringenstraat 75 ,Netherlands,4817 AN | ISO 3834-2:2005 (5 yr cycle) | 07 June 2022 | |
| Netherlands | Niron Staal Amsterdam B.V. | T.T. Vasumweg 125 ,Netherlands,1033 SG | ISO 3834-2:2005 (Netherlands) | Construction and Machining of large complex steel structures for the offshore market, maritime market and land based industry including associated welding controls in accordance with the requirements of ISO 3834-2 : 2005. | 08 November 2020 |
| Netherlands | NTS CombiMetaal B.V. | Standerdmolen 5 ,Netherlands,5571 RN | ISO 3834-2:2005 (5 yr cycle) | Welding of Ferro and non-Ferro parts, sub-assemblies and end-assemblies. | 28 February 2021 |
| Netherlands | Ommeren Metaaltechniek B.V. | Lorentzstraat 2D ,Netherlands,6716 AD | ISO 3834-2:2005 (Netherlands) | Components of steel, stainless steels and exotic alloys. | 25 January 2023 |
| Netherlands | Oosterhuis Techniek B.V. | Schelphorst 20 A ,Netherlands,1771 SL | ISO 3834-2:2005 (Netherlands) | 05 July 2022 | |
| Netherlands | P. Smit B.V. | t.a.v. Crediteurenadministratie Schrijnwerkersweg 7 ,Netherlands,1786 PC | ISO 3834-2:2005 (Netherlands) | Production, assembly and installation of steel, stainless steel and aluminum constructions, including associated welding controls in accordance with the requirments of ISO 3834-2:2005. | 16 September 2020 |
| Netherlands | Petrogas Gas-Systems B.V. | Steenoven 11-13 ,Netherlands,5626 DK | ISO 3834-2:2005 (5 yr cycle) | Design, engineering, procurement, production, project- and construction management, commissioning and turnkey delivery of Gas-, oil- and energy systems, including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 09 August 2023 |
| Netherlands | Petrogas Gas-Systems B.V. | Steenoven 11-13 ,Netherlands,5626 DK | ISO 3834-2:2005 (Netherlands) | 31 December 2018 | |
| Netherlands | Pillen Industries B.V. | Postbus 75 ,Netherlands,7130 AB | ISO 3834-2:2005 (5 yr cycle) | Pressure vessels such as housing for gas meter equipment. | 29 June 2019 |
| Netherlands | Plaatwerk- en Konstruktiebedrijf van de Klundert B.V. | T.a.v. Crediteurenadministratie Postbus 8 ,Netherlands,4765 ZG | ISO 3834-2:2005 (5 yr cycle) | 08 May 2021 | |
| Netherlands | Post Staalbouw B.V. Post Staalmontage B.V. | Postbus 96 ,Netherlands,1940 AB | ISO 3834-2:2005 (5 yr cycle) | 25 February 2022 | |
| Netherlands | Python B.V. | Nijverheidsweg 20 ,Netherlands,7921 JJ | ISO 3834-2:2005 (Netherlands) | 17 February 2019 | |
| Netherlands | Revicon Barosta B.V. | Klompenmakersweg 9 ,Netherlands,3449 JB | ISO 3834-2:2005 (5 yr cycle) | Customer specific stainless steel vessels, piping, constructions and parts. | 29 December 2019 |
| Netherlands | Schelde Exotech B.V. | Koningsweg 2 ,Netherlands,4381 NA | ISO 3834-2:2005 (Netherlands) | Design, manufacture, repair and installation of pressure-, process-, special equipment and heat exchangers for the chemical, petrochemical and energy generating industries as well as universities, scientific institutes and military organizations, according to national and international codes, includ | 30 June 2020 |
| Netherlands | Siers Groep Oldenzaal B.V. | Schuttersveldstraat 22 ,Netherlands,7575 BR | ISO 3834-2:2005 (5 yr cycle) | 06 November 2022 | |
| Netherlands | Sif Netherlands B.V. | Postbus 522 ,Netherlands,6040 AM | ISO 3834-2:2005 (Netherlands) | Manufacture of thick walled, welded tubular components for offshore structures and pressure vessels, including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 30 June 2020 |
| Netherlands | SMI Dokkum B.V. | Oostergoweg 6 ,Netherlands,9101 PL | ISO 3834-2:2005 (Netherlands) | 31 January 2021 | |
| Netherlands | SMST Designers & Constructors B.V. | Postbus 575 ,Netherlands,9200 AN | ISO 3834-2:2005 (5 yr cycle) | Design, engineering, manufacture, commissioning and servicing of: Lifting, transport, drilling and pipe lay equipment. Maritime and mechanical on- and off shore installations. Including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 07 December 2018 |
| Netherlands | SPIE Nederland B.V. | Huifakkerstraat 15 ,Netherlands,4815 PN | ISO 3834-2:2005 (5 yr cycle) | Design, manufacture, installation and repair of process equipment, subassemblies and assemblies for the industrial market including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 21 May 2021 |
| Netherlands | SPIE Nederland B.V. | Huifakkerstraat 15 ,Netherlands,4815 PN | ISO 3834-2:2005 (5 yr cycle) | Design, manufacture, installation and repair of process equipment, subassemblies and assemblies for the industrial market including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 30 April 2022 |
| Netherlands | StaalPartners B.V. | Gedeputeerde Laanweg 53 ,Netherlands,1619 PB | ISO 3834-2:2005 (Netherlands) | Production (cutting, shaping, holing, cuts out, welding, assembly, joining with mechanical fasteners). Corrosion protection in accordance with the requirements of ISO 3834-2:2005. | 30 November 2020 |
| Netherlands | Stainless Equipment Works (S.E.W.) B.V. | Aalbos 6 ,Netherlands,1721 PL | ISO 3834-2:2005 (Netherlands) | Pressure equipment and steel constructions, supporting structures and skids. | 30 April 2023 |
| Netherlands | Standard Fasel B.V. | Postbus 2435 ,Netherlands,3500 GK | ISO 3834-2:2005 (5 yr cycle) | Boiler parts, pressure vessels, piping and equipment for petrochemical and industrial energy applications. | 26 November 2022 |
| Netherlands | Tankbouw Rootselaar BV | Nijverheidsstraat 33, 3861 RJ Nukerk, The Netherlands | ISO 3834-3:2005 (LRQA Deutschland GmbH) | 07 April 2019 | |
| Netherlands | TDW Techniek B.V. | Binnenwijzend 19 A ,Netherlands,1617 KT | ISO 3834-2:2005 (5 yr cycle) | 03 June 2023 | |
| Netherlands | Terlet B.V. | Oostzeestraat 6 ,Netherlands,7202 CM | ISO 3834-2:2005 (Netherlands) | Design, manufacturing and installation of productlines and special components for the international food, dairy, pharmaceutical and chemical industry, including associated welding controls in accordance with the requirements of ISO 3834 - 2: 2005. | 31 October 2019 |
| Netherlands | Van de Grijp International Gear Suppliers B.V. | Rietgorsweg 11 ,Netherlands,3356 LJ | ISO 3834-2:2005 (Netherlands) | Manufacture of thick walled steel tubes and accessories including associated welding controls in accordance with the requirements of ISO 3834-2:2005. Rental of steel flanged pipes and accessories, pontoons, barges and additional equipment. | 31 May 2019 |
| Netherlands | Van den Heuvel Aannemingsbedrijf B.V. | Kruishoekstraat 13 ,Netherlands,5384 TK | ISO 3834-2:2005 (5 yr cycle) | 12 September 2023 | |
| Netherlands | Van der Most Attracties en Staalbouw B.V. | Hoogeveenseweg 7f ,Netherlands,7777 TA | ISO 3834-2:2005 (Netherlands) | Constructive components and steel constructions. | 06 December 2019 |
| Netherlands | Van Sluisveld Steel Projects B.V. | Industrieweg 4 ,Netherlands,5158 NJ | ISO 3834-2:2005 (5 yr cycle) | Steel constructions for civil, shipbuilding and offshore applications, structural components in steel. | 19 November 2019 |
| Netherlands | Velmon Maintenance Piping & Construction B.V. | Postbus 15 ,Netherlands,1900 AA | ISO 3834-2:2005 (Netherlands) | 27 November 2020 | |
| Netherlands | Vlot Staal B.V. | Energieweg 16 ,Netherlands,2964 LE | ISO 3834-2:2005 (Netherlands) | 02 April 2022 | |
| Netherlands | Voortman Steel Construction B.V. | Postbus 83 ,Netherlands,7460 AB | ISO 3834-2:2005 (5 yr cycle) | Steel constructins | 17 December 2021 |
| Netherlands | W.D.H. Machinefabriek B.V. | Nijverheidsweg 7A ,Netherlands,5527 AG | ISO 3834-2:2005 (Netherlands) | Engineering, production and repair of hydraulic cylinders and related products and machining and assembly of components including associated welding controls in accordance with the requirements of ISO 3834 -2:2005. | 03 March 2019 |
| Netherlands | Wesco IJmuiden Apparatenbouw B.V. | Loggerstraat 45 ,Netherlands,1976 CX | ISO 3834-2:2005 (Netherlands) | Heavy equipment manufacturing, Offshore, Constructions, Dredging parts and to execute welding according to specifications. | 31 May 2021 |
| Netherlands | Zaanlas B.V. | Zijtocht 3-5 ,Netherlands,1507 CD | ISO 3834-2:2005 (Netherlands) | 27 June 2022 | |
| Oman | L&T Modular Fabrication Yard LLC | PO Box no. 236, P.C : 322, Falaj Al -Qabail Plot No: 3, Sohar Industrial area , Sohar, Sultanate of Oman | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of structural components ,Modules and assemblies including piping and pipelines. | 01 May 2021 |
| South Africa | 3C Metal South Africa | 9A Electron Street, Stikland, Cape Town, South Africa | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of pressurized piping systems and non-pressurized structural component. | 12 December 2020 |
| South Africa | DCD Marine Cape Town (PTY) Ltd, | Ocean Road, Sturrock Dock, Cape Town, South Africa | ISO 3834-2:2005 (LRV Ltd.) | Fabrication for heavy and general engineering | 27 February 2020 |
| South Africa | GEECOM (Pty) Ltd, | 1490 Mailship Street, Lazer Park, Johannesburg, South Africa | ISO 3834-2:2005 (LRV Ltd.) | Fabrication of Electrostatic Precipitators in mild and stainless steel. | 19 May 2022 |
| South Africa | Hospi Sterilizers and Stainless Steel Engineering cc. | 3 Potgieter Street, Rosslyn, South Africa | ISO 3834-2:2005 (LRV Ltd.) | Autoclaves and Boilers for the Sterilization of medical instruments. | 29 May 2020 |
| South Africa | Konecranes (Pty) Ltd | 5 Jurie Street, Alrode 1449, South Africa | ISO 3834-2:2005 (LRV Ltd.) | Box section girder cranes. | 02 January 2022 |
| South Africa | Turnmill Proquip Engineering (PTY) Ltd | 12 Fairbank Street, NW7, Vanderbijlpark, Johannesburg, South Africa | ISO 3834-2:2005 (LRV Ltd.) | Medium thickness steel fabrications, piping and pressure vessels. | 01 May 2021 |
| South Africa | Belmet Marine (Pty) Ltd | Atomic Street,Triangle Farm, Bellville, Cape Town, South Africa | ISO 3834-2:2005 (LRV Ltd.) | Box Steel Fabrications for heavy and general engineering. | 16 March 2022 |
| Spain | AMPO S.COOP | Poligono Industrial Poyam, s/n, 20213 Madrid, Spain | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of components made of carbon steel, alloy steel, austenitic and duplex steel. | 19 June 2020 |
| Spain | NEWTESOL S.L.U. | CA-141 Km 2,5 Nave Sur 2, 39792 Gajano, Cantabria, Spain | ISO 3834-2:2005 (LRV Ltd.) | Fabrication of pressure vessels and machined-welded component for the nuclear and petrochemical industry. Weld overlay, pipeline fabrication and internals, in special and conventional materials | 29 December 2023 |
| Sweden | Alvenius Industrier AB | Kungsgatan 75 ,Sweden,631 07 | ISO 3834-2:2005 (5 yr cycle) | Design and production of pipe systems for quick-couplings and steel pipes with thin. walls and different treatments for energy efficient transportation of media under pressure, moreover other spirally welded products for qualified use and related services. | 30 April 2021 |
| Sweden | Huddig AB | Kabelvägen 2 ,Sweden,824 12 | ISO 3834-2:2005 (Netherlands) | Welding activities including associated welding controls in accordance with the requirements of EN ISO 3834-2. | 09 March 2022 |
| Sweden | Kanthal AB | Industrigatan 1 ,Sweden,734 30 | ISO 3834-2:2005 (5 yr cycle) | Design, production, technical support and services of products and systems of metallic alloys and ceramic material for generating, measuring, controlling and protection against heat. | 17 September 2023 |
| Sweden | Mekanotjänst i Ljusdal AB | Norrkämstaleden ,Sweden,827 31 | ISO 3834-2:2005 (5 yr cycle) | Manufacture of bent and welded tube articles primarily for the manufacturing industry including associated welding controls in accordance with the requirements of ISO 3834-2:2005. | 23 February 2020 |
| Switzerland | MAN Diesel & Turbo Schweiz AG | Hardstr. 319, 8005 Zürich, Switzerland | ISO 3834-2:2005 (LRQA Deutschland GmbH) | Manufacture of turbo-engines and gas turbines. | 16 May 2020 |
| United Kingdom | 3Ks Engineering Ltd | Embankment Road, Machynys, Llanelli, Carmarthenshire, SA15 2DN . United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Steel Structures and General Fabrications | 21 March 2021 |
| United Kingdom | Armultra Ltd | Armultra House, Hewett Road, Gapton Hall Industrial Estate, Great Yarmouth, Norfolk, NR31 0RB, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Assemblies, Pressure vessels, piping and structural components fabrication. | 20 June 2021 |
| United Kingdom | Balfour Beatty Kilpatrick Ltd | Brombrough, CH62 4YB ,United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Manufacture, fabrication, installation and site erection of pipework, pressure equipment and assemblies, plant, equipment, structural and general steel work. | 21 May 2023 |
| United Kingdom | Barton Firtop Engineering Company Ltd incorporating RGR Fabrication and Welding Services Ltd, | Unit 23, Pensnett Trading Estate, Kingswinford, West Midlands, DY6 7PP United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Design, development and manufacture of pressure vessels, filters, strainers, coalescers, sight glasses, flame arrestors, pipework, filtration equipment, expansion joints, industrial silencers, static mixers, general fabrication and associated assemblies for fluid processing applications. | 29 July 2023 |
| United Kingdom | Bradgate Containers Limited | Leicester Road, Shepshed, Leicestershire, LE12 9EG, United Kingdom | ISO 3834-3:2005 (LRV Ltd.) | Steel Structures and General Fabrications. | 07 April 2020 |
| United Kingdom | Doncasters Paralloy Limited | Paralloy House, Nuffield Road, Billingham , Cleveland,TS23 4DA, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Fabrication of Reformer assemblies, catalyst assemblies and ethylene coils for petrochemical furnaces. | 10 September 2022 |
| United Kingdom | EEW Offshore Structures (Britain) Ltd | Haverton House, Haverton Hill Road, Billingham, TS23, 1 PZ ,United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of large diameter tubulars, offshore components, piles and transition pieces | 21 April 2021 |
| United Kingdom | Fort Vale Engineering Limited | Simonstone Lane, Simonstone, Lancashire, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Valves and Ancillary Equipment for Containers, Road Tankers and Industrial Applications | 08 September 2019 |
| United Kingdom | Fort Vale Nuclear Limited | Simonstone Lane, Simonstone, Lancashire, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Welded Components for the Nuclear Industry. | 08 September 2019 |
| United Kingdom | Gilwood ( Fabricators) Company Ltd | Bradshaw Street, Heywood, Lancashire, OL10 1PL . United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Pressure Vessels, storage tanks, pipework and structural fabrication. | 19 March 2023 |
| United Kingdom | GSFA Limited | Gibbs Road, Lye, Stourbridge, West Midlands, DY9 8SY , United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Structural steel work, pressure vessels, pipework, packaged equipment. | 15 May 2022 |
| United Kingdom | Jacob’s Field Services Limited, | Armstrong Street, West Marsh Industrial Estate, Grimsby, DN31 1XD, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Repair, manufacture and assembly of steel constructions and piping, specialized orbital TIG welding, corrosion resistant overlays & Hard facing. | 26 March 2022 |
| United Kingdom | KGD Industrial Services Incorporating KGD Process International Limited | Netherwood Road, Rotherwas Industrial Estate, Hereford, Herefordshire, HR2 6JU, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Design & Manufacture of Skid Packages including Baseframes, Tanks, Pressure Vessels, and Piping fabrication. | 18 September 2021 |
| United Kingdom | L&N (Scotland) Ltd | Kirkhill Industrial Estate, Aberdeen, AB21 0GZ, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Manufacturer of subsea equipment, control systems & flow-spools, specialized orbital TIG | 16 May 2021 |
| United Kingdom | Laker-Vent Engineering Ltd | Laker House, North Road, Ellesmere Port, Cheshire, CH65 1BA, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | rocess pipework for the Nuclear, Power, Chemical, Oil & Gas, Pharmaceutical, Sub-sea, Aerospace, Food & Brewing Industries applications. | 13 December 2022 |
| United Kingdom | Liebherr Sunderland Works Ltd, | Ayres Quay, Deptford Terrace, SR4 6DD, Sunderland Tyne and Wear, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Manufacture of marine cranes and port crane solutions. | 17 June 2021 |
| United Kingdom | National Oilwell Varco United Kingdom Limited | Seventh Avenue, Team Valley Trading Estate, Gateshead, Tyne & Wear, NE11 0JW , United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Manifolds, Valves and flowline Equipment for Oil, Gas and Petrochemical Industries | 10 January 2022 |
| United Kingdom | National Oilwell Varco, Process and Flow Technologies | Brent Avenue, Montrose, Angus, DD10 9PB.United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Welded Components and Structures for the Oil, Gas and Industrial Markets | 29 July 2019 |
| United Kingdom | Normand and Thompson Ltd | Hillend Industrial Estate, Dalgety Bay, KY11 9JH, Fife, Scotland, United Kingdom | ISO 3834-3:2005 (LRV Ltd.) | Structural steel work, pressure vessels, pipework, storage tanks. | 24 August 2021 |
| United Kingdom | Portobello-RMF Engineering Ltd | Dinnington, Sheffield, S25 3RF, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Pressure Vessels, shell and tube heat exchangers and special fabrications. | 06 January 2022 |
| United Kingdom | Portobello-RMF Engineering Ltd | Holbrook, Sheffield, S20 3FR, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Pressure Vessels, shell and tube heat exchangers and special fabrications. | 06 January 2022 |
| United Kingdom | Premier Hytemp Limited | Newbridge Industrial Estate, Newbridge, Midlothian, United Kingdom, EH28 8PJ | ISO 3834-2:2005 (LRV Ltd.) | Corrosion Resistant Weld Overlay. | 09 May 2022 |
| United Kingdom | Siemens Industrial Turbomachinery Limited | Joseph Ruston Building, Pelham Street, Lincoln, LN5 7FD, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Pressure Systems for SGT 100 to SGT400 Gas Turbine Sets. | 28 September 2021 |
| United Kingdom | TEXO ( CFS) Ltd | Unit 9, Wagonway Industrial Estate, Wagonway Road, Hebburn , Tyne and Wear, NE 31 1 SP, UK. | ISO 3834-2:2005 (LRV Ltd.) | Manufacture, Assembly and Supply Services for Structural Steelwork, Pipework, Grillages, Marine Services Including mobilization and De-mobilization of Offshore Vessels | 13 December 2023 |
| United Kingdom | Whiteley Read Engineering, | The Gateway, Gateway Industrial Estate , Parkgate, Rotherham, S62 6NR , United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Design and manufacture of pressure vessels, skid modules and associated fabrications for the oil, chemical, power and water industry plant applications. | 08 May 2022 |
| United Kingdom | WIKA Instruments Ltd. TC Fluid Control Level Division, | Unit 4 The Interchange, Wested Lane, Swanley, Kent BR8 8TE, United Kingdom | ISO 3834-2:2005 (LRV Ltd.) | Design and manufacture of Valves and Flowline control and level monitoring equipment for Oil, Gas and Petrochemical Industries. | 07 May 2022 |
| United States | Continental Disc Corporation | 3160 West Heartland Drive, MO 64068, Liberty, US | ISO 3834-3:2005 (LRQA Deutschland GmbH) | Manufacture of rupture disks and rupture disk assemblies. | 20 October 2020 |
| United States | HOLTEC Manufacturing Division, HOLTEC International | Keystone Commons, 200 Braddock Avenue, Turtle Creek, Pennsylvania 15145, United States | ISO 3834-2:2005 (LRV Ltd.) | Equipment to store and transport nuclear fuel and other materials, pressure vessels, heat transfer equipment and other similar types of equipment and extruded and miscellaneous fabricated product . | 21 February 2022 |