ERW Square/Rectangle Tube Mill a.Square Tube: 200*200- 450*450mm b.Rectangle Tube: 200*150-500*450mm We can design. Dear ... , feeding machine, flattening mahcine, shear&welder, horizontal accumulator, forming&sizing mill, HF induction welder, cooling device, seam bead trimmer, annealer, pullingout ... customer's trust. Easily Change Size ERW Square/Rectangle Tube Mill