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Pressure vessels, hydrogen technology, and heat treatment
Robert Josef Wolf GmbH & Co. KG is a family-run specialist in vessel and apparatus manufacturing. The company was founded in 1952 and is now managed by the second generation of the family. At its plants in Wilnsdorf and Herdorf, approximately 100 employees design and manufacture pressure vessels, heat exchangers, columns, and custom equipment. The company processes carbon steel, stainless steel, duplex steel, and clad materials. It can produce equipment with diameters up to 5 meters, unit weights of up to 150 metric tons, and wall thicknesses of up to 100 millimeters.
Design, welding technology, heat treatment, and quality assurance (QA) are all handled in-house. The tests specified in the test plan are performed and documented by qualified personnel. Materials and components remain traceable until final acceptance.
Vessel manufacturing, hydrogen technology, and heat treatment
Your storage tank. Custom-designed.
Enter the storage capacity and pressure range—the WOLF H₂ Configurator does the rest: storage tanks or the BLOXX SYSTEM, including wall thickness, weight, and number of tanks, in 3D and with a comparison of the most cost-effective alternatives. Your design is automatically sent to us with your inquiry. This way, we can dive right into your numbers at the booth or during a Teams meeting.
Certificates and Approvals
Frequently Asked Questions About WOLF
Here we answer frequently asked questions about design, manufacturing, and testing in the field of vessel and equipment construction. For project-specific inquiries, please contact our team at +49 2739 8970-0 or sales@rjwolf.de.
Where does WOLF manufacture? + − Our headquarters, with sales, engineering office, and fabrication, is located in Wilnsdorf near Siegen (Plant I). Plant II in Herdorf mainly produces heavy and long equipment such as thick-walled vessels, long columns, and membrane housings. Our heat treatment operations are based at Plant III in Wilnsdorf-Wilden.
Our headquarters, with sales, engineering office, and fabrication, is located in Wilnsdorf near Siegen (Plant I). Plant II in Herdorf mainly produces heavy and long equipment such as thick-walled vessels, long columns, and membrane housings. Our heat treatment operations are based at Plant III in Wilnsdorf-Wilden.
What does WOLF manufacture? + − WOLF manufactures pressure vessels and heat exchangers. The product range also includes columns and custom-designed special equipment. For the hydrogen industry, we manufacture, among other things, membrane housings, gas separation units, and pressure storage tanks. We also perform heat treatment as a contract service for components provided by the customer.
WOLF manufactures pressure vessels and heat exchangers. The product range also includes columns and custom-designed special equipment. For the hydrogen industry, we manufacture, among other things, membrane housings, gas separation units, and pressure storage tanks. We also perform heat treatment as a contract service for components provided by the customer.
Which standards does WOLF follow in its manufacturing? + − We manufacture pressure equipment in accordance with AD 2000 or EN 13445 in conjunction with the Pressure Equipment Directive 2014/68/EU. For ASME projects, ASME Code Section VIII Division 1 with a U-stamp and Division 2 with a U2-stamp apply. Our welding process is certified according to DIN EN ISO 3834. EN 1090 applies to load-bearing steel components; our quality management system is certified according to DIN EN ISO 9001.
We manufacture pressure equipment in accordance with AD 2000 or EN 13445 in conjunction with the Pressure Equipment Directive 2014/68/EU. For ASME projects, ASME Code Section VIII Division 1 with a U-stamp and Division 2 with a U2-stamp apply. Our welding process is certified according to DIN EN ISO 3834. EN 1090 applies to load-bearing steel components; our quality management system is certified according to DIN EN ISO 9001.
Does WOLF ship internationally? + − Yes. We manufacture for projects in Germany and other European countries. Thanks to our ASME certifications, we can also supply pressure vessels for the North American market. Transportation and documentation are adapted to the destination and applicable regulations.
Yes. We manufacture for projects in Germany and other European countries. Thanks to our ASME certifications, we can also supply pressure vessels for the North American market. Transportation and documentation are adapted to the destination and applicable regulations.