Seamless steel pipe is divided into two processes: cold drawing and cold rolling. Cold drawing seamless steel pipe is directly processed 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 finished 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.
标签:   冷拔钢管 环氧地坪 地坪 环氧地坪漆 环氧地坪施工