Matsayi Tsara & ƙira: API 6D, API599 Binciken gwaji: API 598 Girman fuska da fuska: ASME B16.10, API 6D Girman ƙarshen Flanged: ASME B16.5, ASME B16.47A, ASME B16.47B, MSS SP-44, API 605 Girman ƙarshen Butt-Welded: ASME B16.25