Minimum wall thickness per A53

[gbenner]

I am looking for information on minimum wall thickness for steam and condensate piping. Most will be between 4" and 12". I will be doing UT work at a paper mill and currently only have a hand drawn chart from 1983 referencing ASTM A-120.

 

[codeeng]

Calculate it per your Piping Code (assume B31.1).

 

[JLSeagull]

The minimum wall thickness per ASTM A53 table X2.2 for 4 NPS is 0.125-inch; and 0.237-inch per table X2.3. This changes to 0.203 per table X2.2 for 12 NPS and 0.330 per X2.3 for 12-inch.

 

[deanc]

I would follow codeeng's advice.

Better assure yorself there is no type "f" or furance butt weld in the line. Has a habit of failing.

Your reference to A-120 raises a flag---hope you did not get that out of the build specs.