Pre & Post Weld Heat Treatment (PWHT)
Pre & Post Weld Heat Treatment (PWHT) is a critical metallurgical process required to mitigate residual welding stresses, temper hardened heat-affected zones (HAZ), and prevent stress corrosion cracking (SCC) in heavy-wall piping, pressure vessels, and structural assemblies.
Stellar operates mobile 50kVA / 70kVA electric resistance heating transformers, flexible ceramic pad elements, and multi-channel computerized temperature controllers equipped with calibrated continuous strip-chart recorders.
Our heat treatment specialists manage preheating, interpass temperature maintenance, and post-weld soaking cycles in strict compliance with ASME Section VIII, ASME B31.3, and BS EN engineering standards.
Require Pre & Post Weld Heat Treatment (PWHT) for Your Facility?
Contact our experienced Level III inspection specialists for technical consultation, procedures, or expedited site mobilisation.