... B GB/T8 163 10, 20, Q295, Q345 ASTM A106 Steel Tube Application:For Fluid Transportation serviceProduction Standard, Grade, ... Steel No: ASTM A106 Grade A, B, C ASTM A53 S Grade A, ... (Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.Surface ...