Ssaw steel pipe erw steel pipe seamless steel pipe carbon steel pipe lsaw steel pipe

Former method is to use a bad oblique rolls perforated tube, and then rolling it extends. This method of producing fast, but higher on the tube workability requirements, mainly for the production of carbon steel and low alloy steel pipe. After the rule is perforated tube or ingot perforation machine, extruder and then extruded into pipe, this method is lower than the efficiency of cross rolling method is suitable for the production of high-strength steel pipe. Cross rolling method and extrusion billet or ingot must first heating, production of hot-rolled steel tube called. Produced by thermal processing of the cold pipe may sometimes be needed then. Cold working in two ways: one is the drawing method, the pipe is drawn through a die to extubation, the steel pipe is tapered, elongated; Another method is to cold rolling. A seamless steel pipe cold working of steel can be improved dimensional accuracy and finish machining, and the like to improve the mechanical properties of the material.

Carbon steel pipe can be used for thermal equipment, machinery industrial pipe, oil line pipe, geological drilling steel pipe, container steel pipe, chemical industry steel pipe, and other special purpose steel pipe.