Cold drawn erw pipe

It is one of the best choices to produce multi-stage hydraulic cylinder. The process is the same as that of the precision seamless tube cold drawing. It is precisely drawn by precise resistance welding (ERW) and manufactured using en. 10305-2 EU standard for cold drawn carbon steel welded pipe.


After the resistance welded pipe is welded, the whole pipe body shall be normalized to ensure the uniformity of the weld and heat affected zone as well as the rest of the metallographic structure and mechanical properties; the cold drawing and subsequent heat treatment (internal stress removal) as well as the size of the steel pipe are good. And mechanical properties.


After cold drawing and deep processing of welded pipe, high quality steel pipe with small dimensional tolerance and excellent mechanical properties can be obtained.


In addition, cold drawn welded pipe has obvious advantages over cold drawn seamless pipe in terms of initial cost and reduced machining cost.