Cangzhou Junde Steel Pipe Co.,Ltd
Add: South of Qiantong Road, Cangzhou City, Hebei, China
Contact us:Sunny Yang
seamless steel pipe manufacturing （production）process Overview of two kinds of steel pipe process Overview Cold drawn (rolling) seamless steel pipe:
round tube → heating → perforation → start → annealing → pickling → oil (copper) → multi-pass cold drawn ( Cold rolling) → billet → heat treatment → straightening → water pressure test (inspection) → mark → storage.
Hot-rolled (extruded seamless steel pipe): round tube → heating → perforation → three roll skew rolling, continuous rolling or extrusion → off pipe → sizing (or reducing diameter) → cooling → billet → straightening → water pressure Test (or flaw detection) → mark → storage
Copyright © Cangzhou Junde Steel Pipe Co.,Ltd All Rights Reserved.