ASTMA53 Grade A, B, ASTM A106 S Grade A, B, C GB/T8 163 10, 20, Q295, Q345 ASTMA53 Steel Tube Application:For Fluid Transportation serviceProduction Standard, Grade, Steel No: ASTM A106 Grade A, B, C ASTM A53 S Grade A, BGB/T8 163 10, 20, Q295, Q345Delivery Condition:Annealed, NormalizedInspection and Test:Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength ...