... 60-350g/m Detailed Product Description1) Hot dip galvanized steel pip3) Outer diameter:20-323mm;Thickness:1 ... :ISO9001-2008,EN10210,API,Raw material cert,Mill cert,Reap on site inspection report Hot dip galvanized ... 1%Length1-12M , according to customers' requirementsCertificate ISO9001-2008,EN10210,API,Raw material cert,Mill cert, ... Delivery period :15 to 30 Days High Quality Galvanized steel pipe/tube