High Pressure Stainless Steel Seamless Pipe Standard DIN2469 , Cold Drawn

Specifications:

Process flow

cold-drawing (rolling) Seamless steel tube

Round tube blank→To heating→To perforation→To take the lead→To annealing→To pickling→To annoit(copper plating)→To Multi pass drawing (Cold Rolled)→To Blank tube→To heat treatment→To straightening→To hydrostatic test(Injury)→To marker→To Storage.