Steel grade: 300 series Standard: GB, JIS Size: 3-200mm Square Bar, Stainless square barUsage: Widely applied to petroleum chemical, metallurgy, architecture, household ... , boiler, heater exchange, pressure condensator, water, electricity and so on.Steel grade: 300 seriesStandard: GB, JIS Spec.: 3-200mmPacking: export standard ... , please feel free to contact with us:) Thanks & Best regards Round bar