1.Diameter Of Welded Tube (mm):7-219mm 2.Wall thickness Of Welded Tube(mm):0.2-8.0mm This welding pipe mill line mainly consist of Uncoiler, Shearing & butt-welder, Vertical accumulator, Forming , welding , sizing machine, Computer cutting saw, Run-out table. Finished products display Process flowUncoiler→Shearing & butt-welder→Vertical accumulator→Forming , welding , sizing machine→Computer ...