... Ref.: API 5CT 5B ISO9001, 2008 Grade: J55,K55, N80-1,N80-Q,L80,C90,P110 Size: tubing 1.9"to4-1/2", ... casing 4-1/2"to13-3/8 ... deviationKSJG-S24*80A52.4 28.3*11.880±1.0088.9-104KSJG-603*80A60.313028.3*11.880 ... 9001 QUALITY CONTROL CERTIFICATE API - 5CT CERTFICATE WITH THE NO. 5CT-0837 API - 7 CERTIFICATE WITH THE NO. 7-0872API - 5DP CERTFICATE ...