Thickness stainless steel seamless pipes is used for industry or buildings.The thickness is very durable.
According to different production methods, it can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extruded pipe.
Manufacturing process:
1. Hot rolling (extrusion seamless steel pipe): round billet 鈫?heating 鈫?perforation 鈫?three-roll cross-rolling, continuous rolling or extrusion 鈫?pipe removal 鈫?sizing (or reducing diameter) 鈫?cooling 鈫?straightening 鈫?hydraulic test (or flaw detection) 鈫?mark 鈫?warehousing.
2. Cold drawn (rolled) seamless steel pipe: round tube blank 鈫?heating 鈫?perforation 鈫?head 鈫?annealing 鈫?pickling 鈫?oiling (copper plating) 鈫?multi-pass cold drawing (cold rolling) 鈫?blank tube 鈫?heat treatment 鈫?straightening 鈫扝ydraulic pressure test (inspection) 鈫?mark 鈫?storage.
Thick-walled stainless steel tubing is one of the seamless tubes.
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