... +/-0.02mmwidthness tolerance+/-0.02mmSurface finished20-150g/m2 Zinc-coating Steel gradesSGCC,QGCC, GR.A, GR. B, SPCC, SPHC, DX51D, ect ... 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 ...