... galvanized steel pipe OD:20mm-219mm WT: 0.5mm - 2.5mm best price & quick delivery Zinc:60-120g/m2 Details: Product namepre-galvanized steel ... , oiling, cutting, grooving, drilling, etc.Usage industryfence post, construction, architechure, agriculture and some other structure use. ... in construction, bridge, highway, windows of model steel door, machinery, chemical industry, supermarket goods shelf and ...