... CGCC,11TechniqueCold rolled, hot-dipped galvanizing, color coated , galvanized12PaintingTop and Bottom: 20 mic + 5 micBack: 6 mic---8 ... , metal decorating, tinplating, tubbing, building material fields and all other field outdoor decoration.15Steel gradeSGCC or DX51D SGCC16ZINC ... , the ring of defendse on inside and outside, steel belt, and the guard plate. We can also pack according to ...