Heerarka
Naqshadeynta & soosaarka: API 609, ASME B16.34
Kormeerka tijaabada: API 598
Qiyaasaha fool ka fool: ANSI 609
Cabbirka dhammaadka Flanged: ASME B16.5, ASME B16.47A, ASME B16.47B, MSS SP-44, API 605
Cabbirka dhammaadka Butt-Welded: ASME B16.25