Pipe is a hollow tube with round cross section for the conveyance of products. The products include fluids, gas, pellets, powders and more. The word pipe is used as distinguished from tube to apply to tubular products of dimensions commonly used for pipeline and piping systems.
Seamless carbon steel pipe is made from solid tube ingot or the perforation capillary, then through hot rolling and cold rolling or cold dial. Seamless carbon steel pipe has an important position in the steel industry in china.
Seamless carbon steel pipe due to different manufacturing process is divided into hot rolling (extrusion) seamless steel pipe seamless steel pipe and cold drawing (rolling) two kinds.
Hot-rolled seamless steel pipe general divide into steel pipe, low and medium pressure boiler pipe, high pressure boiler tube, alloy steel, stainless steel pipe, oil cracking pipe, geological steel pipe,other steel pipe and so on.
Cold-rolled (dial) seamless steel pipe in addition to general steel tube, low medium pressure boiler pipe, high pressure boiler tube, alloy steel, stainless steel pipe, oil cracking pipe, steel pipe, other include carbon thin wall steel tube, alloy thin wall steel pipes, thin-walled stainless steel tube, steel tube. Generally greater than 32 mm hot rolled seamless steel tube diameter, wall thickness 2.5 75 mm, cold rolled seamless steel tube can be to 6 mm in diameter, wall thickness to 0.25 mm, to 5 mm thin wall pipe diameter, wall thickness less than 0.25 mm, cold than hot rolled high dimensional accuracy.