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|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.
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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