ASME
B16.34 (ANSI B16.34)
API 609 5th Edition
Body Flange Bolting ASME B16.5, B16.47 Series A & B
Testing API 598 or ANSI FCI-70.2 Class VI
Boilers Safety Association Approved (CRN-OCO765-2)
Face-to-face dimension API 609, ISO 5752, ASME B16.10