1.2 Mm Thickness Galvanized Steel Square Pipe Square Steel Pipe Thickness 3.75 Mm 2 Mm Thickness Stainless Steel Pipe 2.9 Mm Thickness Galvanized Steel Pipe 1.1 Mm Thickness Galvanized Steel Square Pipes 0.8 Mm Galvanized Steel Square Pipe 35 Mm Galvanized Square Steel Pipe 30 Mm Galvanized Steel Square Pipe 40 Mm Galvanized Steel Square Pipe Steel Square Tube Sizes 2 Mm Wall Thickness