... welding line consisits of assembling machine,front welding machine,turn-over device,back welding machine and the transmit H-beam Welding ... production line) consisits of assembling machine,front welding machine,turn-over device,back welding machine and thetransmission conveyors.It is used ... to assemble the H-beam,180 turn-over andtransmit,etc. The annual welding capacity is 8000 tonsMain ...