galvanized steel pipe

GradeChemical Composition %CMnSiSPNiCrCu Q1950.06-0.120.25-0.50≤0.30≤0.050≤0.045– –– –– –Q215A0.09-0.150.25-0.55≤0.30≤0.050≤0.045– –– –– –B≤0.045– –– –– –Q235A0.14-0.220.30-0.65≤0.30≤0.050≤0.045– –– –– –B0.12-0.200.30-0.70≤0.045– –– –– –C≤0.180.35-0.80≤0.040≤0.040– –– –– –D≤0.17≤0.035≤0.035– –– –– –GradeMechanical PropertiesYield Strength (Mpa)Tensile Strength (Mpa)Elongation %Impact TestTemperature CImpact energy Q195195315-43033– –– –Q215A215335-4503120 (B)27 (B)BQ235A235375-50026+20 (B) -20 (D)27 (B, C, D)BCD