... -----1250mm 3.material:dx51d,dc51d,q195,sgcc sgch. eg gi sheets 1,Smooth surface. Its corrosion resistance is 2-6 times ... ,GB/T 2518GradeQ195 ,Q235, SGCC,SGCHZine splangleSmall, rugular, big,Usageconstruction ,roofing, commercial use, household appliance, industry, decoration......If you are interesting ...