Size : 1” TO 24 “ ( 25NB TO 600 NB ) Design : API 6D/API 594 Class : ‘E’ TABLE, 150#, 300#. Face To Face : API 6D Materials : M.S./C.S./S.S./Duplex/Hast Alloys/Monel Wafer Ends : Suitable For B 16.5 Pressure Ratings : 150#, 300#, PN 2.5 TO 25 Test : API 598