165 165mm square steel pipetube mill line, HR, CR, GI, Black Steel

This video can teach you how to make Carbon steel pipe, tube, galvanized steel pipe, tube, black steel pipe, tube, HR, CR the name of this machine is ERW tube mill, HF Welding Pipe Production Line, Straight Seam Pipe Welding Machine, Steel Tube Mill, Steel Pipe Forming Machine . Involving round tubes, square tubes, rectangular tubes, LTZ tubes, specialshaped tubes If you want more information, here is my contact information. Hope you like it and thank you for watching. WhatsApp, wechat 1832162412