Seamless cold drawn pipe equipment requirements

- May 09, 2019-

The seamless cold drawn pipe manufacturing process is generally divided into the following two types:

 

Hot rolling (extrusion seamless steel pipe), cold drawn (rolled) seamless steel pipe

 

Note: The raw material of the seamless steel pipe is: round tube blank

 

Seamless stainless steel tube manufacturing process

 

Hot rolling (extrusion seamless steel pipe): round billet → heating → perforation → three-roll cross-rolling, continuous rolling or extrusion → pipe removal → sizing (or reducing diameter) → cooling → straightening → hydrostatic test (or Flaw detection) → mark → warehousing.

 

Cold drawn (rolled) seamless steel pipe: round tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → water Pressure test (inspection) → mark → storage.

 

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