BLACK STEEL PIPE And GALVANIZED PIPE - Round Pipe: Outside Diameter 21, 27, 34, 42, 49, 60, 76, 90, 114 (mm) - Square Pipe: 14x14, 20x20, 25x25, 30x30, 40x40, 50x50 (mm) - Rectangular Pipe: 13x26, 20x40, 25x50, 30x60, 40x80, 45x90, 50x100, 60x120 ...Read More