API Flange Dimensions

2,000 PSI - Type 6B

 API 6A - Table E.1

3,000 PSI - Type 6B

 API 6A - Table E.2 

5,000 PSI - Type 6B

 API 6A - Table E.3 

10,000 PSI - Type 6BX

 API 6A - Table E.4 

15,000 PSI - Type 6BX

 API 6A - Table E.5