... Raw material:SGCH,SGCC Hardness:HRB85-90 Galvanized corrugated steel sheet 1) Standard:GB,JIS.ASTM2) Material: SGCC,Q195-Q235B,SPCC ... ,then tie by steel strap and plate together.ADVANTAGES:1) High tensile strength2) Corrosion resistance,Waterproof3) Abrasion resistance finish4) Light weight ... construction, such as warehouse, workshop, wide-span steel structure buildings. roofing sheet