Mild steel pipe is made of steel ingot made of perforated or solid tube capillary, and then by hot-rolled, cold-rolled or cold-call is made. Mild steel pipe in China's steel industry has an important position.
The raw material is carbon steel pipe round tube, tube embryos to go through a cutting machine cutting the growth of about one meter of the billet, and by conveyor belt to the furnace heating. Heating the billet is fed into the furnace, the temperature is about 1200 degrees Celsius. Fuel is hydrogen or acetylene. Furnace temperature control is the key issue. Circle tube came out through the pressure punching machine wear air. Generally more common punch is tapered roller punching machine, punching machine such high production efficiency, product quality, perforated expanding volume, you can wear a variety of steels. After perforation, round tube has been three roll rolling, rolling or extrusion. Squeeze off the tube after sizing. Sizing mill rotating at high speed through a cone drill holes into the billet to form pipe. Pipe diameter from the sizing mill to determine the length of the drill diameter. The pipe sizing after entering the cooling tower through water cooling pipe after cooling, will be straightening. Steel belt sent by straightening the metal detection machine (or water pressure test) for internal testing. If the pipe internal cracks, bubbles and other problems will be detected. Steel quality even after rigorous hand-selected. Steel quality, the use of spray paint number, size, production batch number. Hanging by a crane into the warehouse.
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