無縫鋼管分為冷拔和冷軋兩種工藝

無縫鋼管分為冷拔和冷軋兩種工藝，冷拔無縫鋼管是在無縫鋼管管坯的基礎上直接上冷拔機冷拔加工，它的工藝簡單，產量較高，但外表粗糙。而冷軋是在無縫鋼管管坯的基礎上酸洗磷化後在上冷軋機上精軋，精密度高裡外光亮（也就是我們常說的精密光亮冷拔無縫鋼管）但是產量較低。精密無縫鋼管常用牌號10、20、35、45；在電力、石化、船舶、航天、軸承、氣動元件、油缸、鍋爐設備、汽車等行業中大量應用；生產規格外徑4—200mm，壁厚0.5—12.5mm。
Seamless steel pipe is divided into two processes: cold drawing and cold rolling. Cold drawing seamless steel pipe is directly proc印花地坪essed by cold drawing machine on the basis of seamless steel tube billet. Its process is simple, its output is high, but its appearance is rough. Cold rolling is finishe彩色沥清地坪d on the upper cold rolling mill after pickling and phosphating on the basis of seamless steel tube billet. It has high precision, bright inside and outside (that is to say, precise and bright seamless steel tube) but low output. Precision seamless steel pipe commonly used brand 10, 20, 35, 45; in power, petrochemical, shipping, aerospace, bearings, pneumatic components, cylinders, boiler equipment, automobile and other industries, a large number of applications; production specifications outside diameter 4-200 mm, wall thickness 0.5-12.5 mm.