1.Galvanized steel pipe(ERW Steel pipe) 2.OD:21.3-610mm 3.W.T:1.5 ... Length:3-20m 5.Best quantity,Competitive price 1.Galvanized welded steel pipe(ERW Steel pipe) 2.OD:21.3-610mm 3.W.T:1 ... 3-20m 5.Best quantity,Competitive price 1.Commodity Namegalvanized steel pipe2.StandardBS1387,API 5L, API 5CT,ASTM A53,ASTM ... England, Belgium, etc13.CertificatesAPI 5L , API 5CT, ISO ,CE Galvanized welded Steel Pipe