api 5000Pressure Rating:- API 6BX-2000 PSI WP (With BX type Ring Gasket) Nominal Size B Flange Thickness T Hub Diameter J1 Groove Depth E Added Hub Thickness J4 263⁄ 4 30 4.97 5.28api 6a - type - 6b 34.5 mpa (5000 psi) gbt 22513-2013 API 6A-TYPE-6B 34.5MPA (5000PSI)