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Minimum wall thickness per A53

Minimum wall thickness per A53

Minimum wall thickness per A53

(OP)
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.

RE: Minimum wall thickness per A53

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

RE: Minimum wall thickness per A53

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.

RE: Minimum wall thickness per A53

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.

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