Product Description

Seamless steel pipe specifications usually outside diameter * thickness (unit: mm), said. Seamless steel pipe production methods can be divided into hotrolled seamless steel tubes and coldrolled (allocated) seamless steel pipe two categories. Hotrolled seamless steel pipe is divided into general steel pipes, low and medium pressure boiler pipe, highpressure boiler steel pipes, alloy steel pipe, stainless steel, petroleum cracking tubes, geological steel pipe and other pipe and so on. Rolled (allocated) seamless steel Subject to subgeneral steel pipe, low and medium pressure boiler pipe, highpressure boiler steel pipe, steel pipe, stainless steel pipe, petroleum cracking tubes, other steel pipes, including precision steel tubes, carbon steel tubes, alloy thin wall steel pipe, stainless steel tubes and shaped steel tubes. Generally greater than the hotrolled seamless pipe diameter *2mm, wall thickness 2.5*5mm, rolled seamless steel pipe outside diameter to 6mm wall thickness can be 0.*5mm, thinwalled tube diameter to 5mm wall thickness less than 0.*5mm , cold than hotrolled dimensional accuracy. Diameter more than *7mm in the pipeline project, often used in hotrolled tube, diameter less than *7mm when used cold drawn (rolled) pipe.


General seamless steel pipe is *0 #, *0 #, *0 #, *5 #, *5 # high quality carbon structural steel or *6Mn 5MnV and lowalloy structural steel or *0Cr, *0CrMnSi, *5Mn2, *0MnB a structural steel hotrolled or coldrolled made​​. *0 #, *0 # and other lowcarbon steel seamless pipe for fluid pipes. *5 #, *0Cr, made ​​of medium carbon steel seamless pipe usually used for the manufacture of mechanical parts, such as automobiles, tractors, by parts. General seamless steel pipe to ensure the strength and flattening test. Hotrolled steel, hotrolled state or heat treatment delivery; cold rolling to heat treatment delivery.


Hot, as the name implies, the rolling temperature deformation resistance of the small and large deformation. Steel plate rolling, for example, general billet thickness of about **0mm, rough rolling and finish rolling, the final thickness of 1 ~~ *0mm. At the same time, due to the steel plate width to thickness ratio is small, the dimensional accuracy requirements are relatively low, not prone to the flatness problem, mainly to control the crown.