-Design: ASME 16.34/ API 6D/ API 600/ BS 1414
-Face to face: ASME B16.10
-End Flange: ASME B16.5, ASME B16.47
-BW End: ASME B16.25
-Test: API 598/ API 6D/ BS 6755
-Special: NACE MR-01-75
-OS & Y, Resurgens stem
-Bolted Bonnet cum spirae, esset gasket
-Flexible Cuneum
-Backseat Weld-Depositum
-Threaded aut iuncta sede anulum
-Renewable sedes annulos
-Extended Bonnet ad Cryogenic Service
-Flanged or tibus iuncta finit.
-By Transi ad Request
-Locking Fabrica libitum