Shandong seamless steel pipe production methods and defects and defects of seamless steel pipe round billet → heating → perforation → three-roll oblique rolling, continuous rolling or extrusion → stripping → sizing (or reducing) → cooling → straightening → water Pressure test (or flaw detection) → mark → Into the warehouse seamless steel tube is made of steel ingots or solid billets perforated capillary tube, and then made by hot rolling, cold rolling or cold dial.
The specifications of the seamless steel pipe are expressed in terms of outer diameter*thickness mm.
Seamless steel tube is divided into hot-rolled and cold-rolled (dial) seamless steel tubes.
Hot-rolled seamless steel tubes are divided into general steel tubes, low- and medium-pressure boiler steel tubes, high-pressure boiler tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, geological steel tubes, and other steel tubes.
Cold-rolled (dial) seamless steel pipes include general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes, as well as carbon thin-walled steel pipes and alloy thin-walled steel pipes. Stainless steel pipe, special-shaped steel pipe.
The source of seamless steel pipe knowledge
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