... Coating: 60-350 galvanized steel coil sgch jis 3302 Technical Data Chemical CompositionGRADECSiMnPSTiSGCC/DX51D+Z≤0.10≤0 ... 390≥17S350GD≥350≥420≥16 galvanized steel coil sgch jis 3302 Application(1)Guardrails, roofing, ventilation ducts, gutters and ... and other structural use. galvanized steel coil sgch jis 3302 showProduction LineCompany IntroductionTIANJIN JIANGHAILONG STEEL COMPANY is specialized in ...