... ; SY/T5037,SY/T5040,GB/T9711.1/9711.2,API 5L, GB/T3091Anticorrosive coating:AWWAC205,AWWAC210,AWWAC222,AWWAC2143.Outer Diameter219.1 ... Africa, Spain, Italy, France, England, the Netherlands,Belgium, etc13.CertificatesAPI 5L; ISO9001:2008;ISO14001:2004; OHSAS18001:1999.