api 5000API 6A - Type - 6B 34.5 MPA (5000 psi) API 6A - Type - 6BX 13.8 MPA (2000 psi)API 6A TYPE 6B 5000 PSI Blind pipe flanges are used to seal the end of a piping system or pressure vessel openings to prevent flow.API 6A TYPE 6B 5000 PSI Blind flanges are mainly used for pressure testing the flow of liquid or