Welding property improvement

PWHT reduces or redistributes the residual stress introduced by the welding process with a technique that involves heating, soaking and cooling the welds to controlled temperatures. This improves the properties of the welds. 

Calpiping Industrial performs all our own PWHT using both electric resistance coils and furnace running the latest technically advanced computerized monitoring software for all our pressure piping and specialty fabrications requiring PWHT per ASME Code.


1- Furnace – 20’ x 8’ x 8’ (Gas Fired) Can heat up to 1,500°F

2 – 6 Way Power Console (Electric 480V) Computer Monitored 

1 – 6-Way Console (Electric 480V) with Chart Recorder 

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