schedule 40 galvanized steel pipe 2.OD:21.3-610mm 3.W.T:1.5- ... :3-20m 5.Best quantity,Competitive price 1. schedule 40 galvanized steel pipe2.OD:21.3-610mm 3.W.T:1.5 ... :3-20m 5.Best quantity,Competitive price 1.Commodity Namegalvanized steel pipe2.StandardBS1387,API 5L, API 5CT,ASTM A53,ASTM A252 ... , Belgium, etc13.CertificatesAPI 5L , API 5CT, ISO ,CE schedule 40 galvanized steel pipe