Product Description In recent years, the production of galvanized sheet in China has increased year by year, while the import volume is also increasing year by year, and the growth rate is even higher than that of production; At the same time, the production of carbon steel plate, carbon steel coil, galvanized coil, color coated coil, carbon steel pipe, galvanized pipe and other products is also increasing year by year, and the steel market can be expected in the future. Seamless square carbon steel pipe is made of a whole round steel perforation, the surface of the surface of the weld of the steel pipe, called seamless steel pipe. According to the production method, seamless steel pipe can be divided into hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe, extruded seamless steel pipe, jacking pipe and so on. According to the cross-sectional shape, the seamless steel pipe is divided into two kinds of round and special-shaped, and t…