JLSeagull & 11echo,
Thanks for the reply.
ASME B 16.5 says , for dimension of CL900 flanges below 3"
refer to the table for CL1500.
I am looking for a reference in the code , which mentiones that below 3" in CL900 , the call out should be CL1500.
In other words , does the code prohibits the...