Standards 05: Bronze Flanges – ASME/ANSI 150 lb
Flange diameters, thickness, bolt circles, numbers and diameters of bolts for ASME/ANSI B16.15 – Cast Bronze Threaded Fittings – 150 lb Bronze flanges with plain faces can be found in the table below:

150 lb bronze flanges with plain faces have two concentric gaskets retaining grooves between the port and the holes.
Related reading
Series: Piping Standards Series | Previous: Standards 04: ASTM International – Volume 01.01 Steel – Piping, Tubing, Fittings | Next: Standards 06: Bronze Flanges – ASME/ANSI 300 lb
