16 inch erw pipe 1.standard:GB-8183/8162/3087, BS1387, DIN10025 2.outer diameter:20~219mm 3.wall thi Hot Dip Galvanized ... Client Option,InspectionWith Hydraulic Testing, Eddy Current , Infrared TestTechniqueERW and Hot Rolled/Cold Rolled/ Cold DrawnTypeWelded/SeamlessDate of DeliveryLess Than 15 ... /20/25/30/40/50/60 Days According To The QuantityPayment:L/C T/T Port ...