... steel tube Product namepre-galvanized construction steel pipeSpecification20mm-114.3mm*0.5mm-2.3mmMaterialQ195StandardsBS1387, GB/T3091, ASTM A53Length4.5-6 ... painting, oiling, cutting, grooving, drilling, etc.Usage industryfence post, construction, architechure, agriculture and so on.PackagingBundle,bulk , in container or ... (Welcome any inquiry of steel pipes!) Pre Galvanzied Construction Pipe