| Ägypten |
El Nasr Steel & Pipe Fittings |
| Algerien |
Société Nationale de Siderurgie |
| Argentinien |
Acindar, Siderca |
| Australien |
Tubemakers of Australia |
| Belgien |
Tube de la Meuse |
| Canada |
Algoma Steel, Prudential Steel |
| China |
Chengdu Iron & Steel, Tianjin Seamless Tube |
Deutschland
|
Benteler Werke, ESW-Röhrenwerke, Homburger Röhrenwerk, Krupp-Hoesch Rohr, Mannesmann-Röhrenwerke, Maxhütte |
| England |
Corus Tubes, English Seamless Tube |
| Finnland |
Rautaruukki |
| Griechenland |
IBS United Tube Mills |
Italien
|
Acciaierie e Tubificio Meridionali, Dalmine, Ferrotubi, Mario Maraldi, Pietra, Seta Tubi, Tubi Arcore |
| Japan |
Sumitomo Metal Industries |
| Kasachstan |
Kazakhstan Seamless Pipe |
| Korea |
Seah Steel, Union Steel Pipe |
| Kosovo / Serbien |
IMK - Urosevac
|
| Kroatien |
Zeljezara Sisak |
| Libyen |
Socialist Pipe Establishment |
| Luxemburg |
Arbed |
| Mazedonien |
11. Oktomvri Tube Works |
| Mexico |
Hylsa, Productos Especializados de Acero |
| Österreich |
Voest-Alpine Tubulars - Rohrwerk Kindberg |
| Polen |
Huta im Lenina |
| Rumänien |
Uzina Metalurgica Jasi, Uzina de Tevi Republica |
| Russland |
A.N. Kuzmin, Pervouralsk, Seversky, Wolgoretschensk |
| Saudi Arabien |
Jesco |
| Spanien |
Arregui, J. M. Aristrain, Inoxidables de Rabade |
| Südafrika |
Tosa |
| Tschechien |
Nova Hut Karvina, Nova Hut Kuncice, VTZ Chomutov |
| Turkey |
M.K.E.K. Celik Fabrikasi, Borusan Gemlik |
USA
|
Alliance Midwest Tubular Products, Pittsburgh Tube, Plymouth Tube, Sawhill Tubular Division, Tex Tube, USS / Kobe Steel, USS, Vision Metals, V & M Star |
