Hebei ChongSheng Special Steel Pipe Co.,Ltd.
Carbon steel seamless pipe  material is round tube, round tube embryo to be cut through the cutting machine into a length of about 1 meter of the blank, and sent to the furnace by the conveyor belt heating. The billet is fed into the furnace for heating at a temperature of about 1200 ° C. The fuel is hydrogen or acetylene. Temperature control inside the furnace is a critical problem. Round tube billet after the pressure through the punching machine to wear empty. Generally more common punching machine is a cone-shaped roller punching machine, this perforation machine production efficiency, product quality, perforation expansion diameter, can wear a variety of steel. After perforation, round tube billet has been three roll chrome, rolling or extrusion. After the extrusion to be detached. The sizing machine is rotated at high speed through the conical bit into the steel embryo to perforate to form the steel pipe. The inner diameter of the pipe is determined by the length of the outer diameter of the drill bit. After passing through the steel pipe, into the cooling tower, through the water cooling, steel pipe after cooling, it is necessary to straighten. After the steel pipe straightened by the conveyor belt sent to the metal testing machine (or water pressure test) for internal testing. If the steel pipe cracks, bubbles and other issues, will be detected. After the steel pipe quality inspection through rigorous hand selection. After the steel pipe quality inspection, with paint spray on the number, specifications, production batch number. And hanging from the crane into the warehouse.
Hebei ChongSheng Special Steel Pipe Co.,Ltd.