API 5L B

[engineeringgg]

Hi

1. Can someone please tell me where the "name" API 5L B is coming from

2. Why do they call the 800# Valve a 800# Valve??? Reason for that, Please

3. A 150 # Flange, why do they call it that????


Waiting on a reply

Thanks
Larry

 

[stanweld]

Your post is in the wrong forum.

 

[IFRs]

API is the American Petroleum Institute
The # is a pressure rating (pounds per square inch)