1.Galvanized steel pipe(ERW Steel pipe) 2.OD:21.3-610mm 3.W.T:1 ... :3-20m 5.Best quantity,Competitive price 1.Galvanized welded steel pipe(ERW Steel pipe) 2.OD:21.3-610mm 3.W.T:1 ... X80,S235JRH,etc11.UsageFor linepipe in petroleum and natural gas , water and gas, mineral slurry. Also for chemical industry, building ... , Belgium, etc13.CertificatesAPI 5L , API 5CT, ISO ,CE Galvanized welded Steel Pipe