Cov Qauv
Tsim & tsim khoom: API 609, ASME B16.34
Kev tshuaj ntsuam xyuas: API 598
Lub ntsej muag rau ntsej muag qhov ntev: ANSI 609
Flanged kawg dimension: ASME B16.5, ASME B16.47A, ASME B16.47B, MSS SP-44, API 605
Taub-Welded kawg dimension: ASME B16.25