The H-shaped hf welded steel pipe mill line, which is an alternative to hot-rolled H-beam, is a new type of economical construction steel.

　　The hf welded steel pipe mill line has the advantages of strong bending resistance, high structural strength, high structural stability, high structural precision, light structural weight, high degree of industrial production, rich and flexible design style, environmental protection, simple construction, fast construction speed, and floor space. It has the advantages of small size, suitable for all-weather construction, doubled capital turnover, cost saving, etc., and has been widely used.

　　The process flow of the hf welded steel pipe mill line production line is: the strip steel coil after slitting is hoisted into the preparation table or the uncoiler trolley → the trolley runs to the uncoiler → lifts the coil → the uncoiler supports the steel coil → straight The rotating rubber wheel of the head machine is pressed to prevent the steel coil from unwinding → the straight head tractor works → the head and the tail are leveled → shear butt welding (strip steel connection) → looper storage → inlet guide → assembly forming → hf welded steel pipe mill line: high frequency welding→water cooling→section steel straightening→pulling out→flange straightening→flying saw cutting→collecting and packing.