Heat Treatment Services

JST Group provides professional heat treatment services for industrial and construction applications throughout Thailand and Southeast Asia. Our experienced heat treatment engineers and technicians are equipped with the latest technology and certified equipment to deliver safe, precise, and reliable results.

Post Weld Heat Treatment (PWHT) is critical in the fabrication and maintenance of pressure vessels, pipelines, and structural components to relieve residual stresses and improve the mechanical properties of welds.

Key Services & Capabilities

• Post Weld Heat Treatment (PWHT)
• Pre-heat treatment for welding operations
• Stress relieving of fabricated components
• Local PWHT for in-situ repairs
• Electrical resistance heating systems
• Exothermic heating for field applications
• Heat treatment of pressure vessels and piping
• Hardness testing and reporting
• Compliance with ASME, AWS, and BS standards
• Comprehensive heat treatment procedures and records