ERW steel pipe mill for carbon steel and GI steel pipe dia(mm): 8-25.4, 12.7-50.8, 16-63, 25.4-76, 76 ... pipes, such as the square pipes,rectangular pipes, oval pipes,etc.After absorbing advanced pipe making technology from both abroad and domestic, our ... Technical Flow:Uncoiling & Flattening→Forming, H.F. Welding & Sizing→Bead and burr removing→Cooling & tracking Cutting→Tube run out & Collecting. ERW ...