... >Welded Steel Pipe Thickness: 6 to 18mm ( 0.236-0.708 inch)Welded Steel Pipe Steel Grade: A, B, X42, X46, X52, X56, X60, X65, J55, Welded Steel Pipe Type of pipe ... coating: 2PE, 3PE, Epoxy powder. Welded Steel Pipe Application: Structure steel pipe, piling pipe ...