If you would like a full range of information about API 6A flanges and specified products, including some history, visit http://www.woodcousa.com/. The web site tools section shows deminsions for every current, and most obsolete and discontinued flanges. Also you will find explanations of 6B...
deaconp:
The term you use, "open flange" probably refers to any form of "open face flange," this means any flange not having a tapped and studded face. Two "open face flanges" join together with bolts that pass through the bolt holes in both flanges and secure the...
Boink
TD2K gave correct information. If you want to learn more about such terms, and find links to many sources of related topics, go to http://www.woodcousa.com/ and click on the Web Site Tools link ( in red on the left side of the page ). There you will find all current API Specification 6A...
Although the history seems lost, careful reading of API Spec 6A will lead the reader to conclude that the writers of API Spec 6A never intended 6BX flanges to join to standard pipe. The 14th edition of 6A did mention transition pieces, but they do not appear in the latest edition. The dimensions...
