... +/-0.02mmSurface finished20-150g/m2 Zinc-coating Steel gradesSGCC,QGCC, GR.A, GR. B, SPCC, SPHC, DX51D, ect.StandardJIS, GB , ASTM, BS ... supply various models, specifications, and varieties of steel coil,plates and strips. Including cold rolled, hot rolled, galvanized and so on.The products conform to ...