... welded 2) O.D. 21mm-457mm 3)W.T. 0.8mm-16mm hot G.I. steel pipeHot GI pipeSize Wall thickness (W ... .T.)1/2”-18“0.8mm-16mmLength1m-12m ,by customer ... America ,AustraliaCountry of originChinaProductivity3000 Metric Tons pet MonthRemark1. Payment terms :T/T ,L/C2. Terms of trade :FOB ,CFR,CIF ,DDP,EXW3 ...