... .5mm best price & quick delivery Zinc:60-120g/m2 Details: Product namepre-galvanized steel pipeSpecification20mm-219mm*0.5mm-2. ... painting, oiling, cutting, grooving, drilling, etc.Usage industryfence post, construction, architechure, agriculture and some other structure use. ... phone or e-mail soon. ApplicationWidely used in construction, bridge, highway, windows of model steel door, machinery, ...