Pre-Galvanized Steel Rectangular PipesThickness Range: 0.5-2.0mmOuter Diameter: 20x10-200x100mmLength: 4-12mZinc:30-180gMaterial: Q195, Q235, Q345A53-369, A500Standard: ASTM A53-2007, ASTM A106-2006Technology: ERWSinostar main products: Steel pipes, Steel Round Pipes, Steel Square Pipes, Steel Rectangular Pipes , Steel Pipe, Pre Galvanized Steel Pipes, Steel Square Pipes, Pre-Galvanized Steel Round Pipes, Steel Rectangular Pipes and all kinds of hardware products. Our sales network spreads all over the USA, Europe, South America, Africa, Middle East and Southeast Asian countries.