Post Weld Heat Treatment Services
Post weld heat treatment (PWHT) is a controlled heating and cooling process that relieves residual stress in welded steel and improves toughness and ductility. Premium Plate performs PWHT in-house on carbon and stainless steel components for tanks, vessels, and structures, delivering code-compliant, documented results.
Controlled PWHT Solutions for Welded Steel Components
PWHT relieves excessive stress in welded steel assemblies while refining microstructure and improving toughness and ductility. Integrated with fabrication, it supports fast delivery of large tank and vessel sections - shell plates, nozzles, manways, and inserts - with all work compliant with API 650 and industry inspection standards.
PWHT Capabilities and Processing Advantages
Premium Plate performs post-weld heat-treating services in a dedicated, controlled oven engineered for large assemblies. A dedicated 48 ft oven takes a full weldment in one load, so a shell section is not cut down or treated in stages – which is what keeps the metallurgical result uniform across the weld and the parent metal. Heat-up, soak, and cool-down follow the rate specified by the applicable code for the material and thickness, and the cycle is recorded for the inspection file.
Specifications:
| Parameter | Specification |
|---|---|
| Oven | 11 ft H × 14 ft W × 48 ft L |
| Loading | 50-ton crane |
| Materials | Carbon and stainless steel |
| Parts | Shell plates, nozzles, manways, inserts, complete welded assemblies |
| Codes | API 650, applicable ASME sections, client specifications |
| Control | Calibrated thermocouples, programmed heat-up / soak / cool-down rates |
| Documentation | Time-temperature chart and PWHT certificate per load |
| Integration | Plate supply, cutting, beveling, forming, rolling, coating in-house |
Benefits:
- PWHT relieves residual weld stress and reduces the risk of cracking and distortion in service.
- Ensuring the uniform metallurgical properties across welds and parent metal.
- Improving dimensional stability and providing long-term durability with better structural performance.
- Reducing rework and accelerating field installation when combined with in-house cutting, forming, and coating.
Need Post Weld Heat Treatment?
Premium Plate provides fully traceable, in-house PWHT integrated with cutting, forming, and coating for fast, code-compliant fabrication.
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FAQs About Post Weld Heat Treat
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Contact Information
Business Hours
Monday - Friday: 8:00 AM - 5:00 PM CST
Global Sales Managers
United States & Latin America
Chad Odom