What does DN32 flange mean?
According to American Standard B36.10M 1-1/4 "is 42.2mm diameter is connected to the pipe is 42.2mm, the hole to see the pressure level or wall thickness determine the size
DN32 stands for path 32mmThe inside diameter is 32mm
DN is nominal size 32 means 1-1/4, not internal diameter 32mm
