... -15mm-200*200mm 4,ISO.BV.QC certificate Quick Details Standard: BS, JIS, GB, DIN, ASTM, APIStandard: BS 1387, BS 1139 ... A 106B, ASTM A53, X42Quality:Manufactured to meet ISO9001, ASTM, API, SAE, DIN, BS, GB and SY requirementsApplication: Widely used in ...