... gas convey 5.Cert.: ISO A -------------------------------------------1. a106 carbon seamless steel pipe2.O.D.:17.1mm~1016mm3.W. ... steel pipe (A53, API 5L, BS1387, EN10025) 1Producta106 carbon seamless steel pipe 2StandardU.S.A.ASTM A53 ASTM A106 ... tons16Quality CertificateISO, API, Mill Test Certificate17Contact:Hunan New Materials Industry Group Co., LtdAdd.: 333, Wuyi Road, Changsha, Hunan, ChinaTel: ...