... of pre-galvanized steel pipe OD:19mm-114mm WT:0.6mm--3.0mm Steel grade:Q195-Q235. Zinc:60-300g Manufacturer of ... pre-galvanized steel pipe OD:19mm-114mm WT:0.6mm ... punching and so on.Usage industryPetrol, gas, water pipe,construction,chimney pot.PackagingBundle,bulk , in container or ... can provide all kinds of pipe:cold rolled,hot rolled,hot dipped,ERW pipe and so on.We ...