... lineH beam welding line it is used to assemble the H-beam, 180 turn-over and transmit, etc. The annual welding ... description of cold roll formerH-beam welding line(welding line, h-beam production line) consist its of assembling machine, front welding ... and the transmission conveyors. It is used to assemble the H-beam, 180 turn-over and transmit, etc. The annual welding ...