Roofing Sheet, Galvanized Steel, Galvalume Steel manufacturer / supplier in China, offering Manufacturers Price Dx51d+Z Z100 Z30 25mm 30mm 50mm 1mm 1.5mm Thickness Hot Dipped Galvanized Steel Pipe 1/2 3/4 1 1.5 Inch 6m 12m Galvanzied Steel Pipe, Factory Direct Sale 2 Inch 4 Inch 6 Inch Galvanized Steel Iron Tube 100mm 200mm 250mm Diameter ASTM DN15 DN20 DN25 DN32 DN40 Hot DIP Galvanized Steel Pipe, Hot Sale 12 14 Gauge Size 1/2 3/4 1"2"1.5"Inch Hot Dipped Gi Pipe 0.8mm 1.0mm 1.2mm Thickness Sch40 Metal 25mm Galvanized Steel Round Pipe and so on.