hot rolled flat bar 1thickness :1.5-60mm 2width :10-200mm 3length:4m-12m 4grade:Q195,Q235,Q345,ASTMA36,SS400 hot rolled flat bar 1thickness :1.5-60mm2width :10-200mm3length:4m-12m4grade:Q195,Q235,Q345,ASTMA36,SS4005certificate:ISO9001:2008,BV6aplication :widly used to make room frame structure in constructionChemical analysisProduction Standard: GB/T 700-2006GradeChemical composition (%,max) ...