In May 2009 auditing of procedures Rohr 33,7×8.0mm and 396*30mm for the material X 10 CrWMoV 9-2 material- Nr. 1.4901 were tested through weld verification as well as NDT (company Pockrandt www.pockrandt-tqs.de) and through destructive testing (Germanischer Llyod Prüflabor, Herne).
In cooperation with the TÜV Nord (Western area, Essen region, www.tuev-nord.de) the Vallourec&Mannesmann basic material with BÖHLER-filler material was welded with ours Kemppi 4000 by our experienced GmbH-cooperant following instructions given by our welding expert (EWS/IWS) Mr. Ingo Meiners. Preheating, controlled and low carbon annealing (so-called „Soaking“) and stress-free annealing were carried out by the company Inpro GmbH, Mors (www.inpro-moers.de).
