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Académie
Steamfitting & Pipefitting
Steamfitter/Pipefitter Red Seal Certification
Pipe Welding Processes & Procedures
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Pipe Welding Processes & Procedures
Vérification des connaissances
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What is post-weld heat treatment (PWHT) and what does it accomplish?
A
Heating the weld to welding temperature and then repeating the weld pass
B
Applying heat immediately after welding to maintain preheat temperature
C
Reheating the electrodes before use to remove moisture
D
Controlled heating of the completed weld to a specified temperature, holding, and controlled cooling to relieve residual stresses and reduce HAZ hardness
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