Our Services

THERMOTEST provides controlled electrical pre-heat and concurrent heating solutions for metals with substantial thickness, complex geometry, critical processes, or exotic alloy content.

Pre-heating before and during welding is essential to reduce internal stresses, moisture, and thermal shock — helping to prevent costly repairs and ensuring high-quality welds.

Our on-site team delivers precise monitoring and accurate control of individual heating zones up to 75mm on either side of the weld, guaranteeing total temperature uniformity within inter-pass limits.

• Uniform expansion of the workpiece
• Reduced concentrated stresses in the heat-affected zone
• Lower moisture content to prevent hydrogen-induced cracking
• Elimination of thermal shock, reducing under-bead cracking
• Temperature record charts provided for every application

High-velocity gas burners (6 million Btu) are used for heat treating large structures, vessels, spheres, fabrications, and furnace applications. The gas firing equipment is equally effective for internal heating as it is for external furnace applications.

When combined with high-velocity combustion air, the burner system achieves precise control with a turndown ratio of 50:1 and can operate with up to 3000% excess air.

THERMOTEST personnel have carried out some of the largest gas firing operations in the world, including the in-situ firing of 50-metre bullet tanks for Shell Malaysia. 

We offer furnace-based post weld heat treatment (PWHT) services to enhance the quality, safety, and performance of welded components.

Using controlled furnace heating and cooling, PWHT relieves residual stresses, improves material properties, and reduces the risk of cracking or distortion.

Our process ensures uniform temperature control and compliance with applicable industry standards, making it ideal for pressure vessels, piping, and critical fabrication work.

THERMOTEST provides dry-out and refractory curing solutions using our high-velocity gas burner systems. These systems ensure accurate and uniform temperature control while delivering the added benefit of heating by convection.

The technique removes moisture from the refractory through the scrubbing action of the burner products, without baking or damaging the outer surface.

Refractory curing can be carried out at temperatures up to 1300°C, with temperature increments as low as 2°C per hour when required. Typical applications include Glass Float Furnaces, Cyclones, Reactors, Stacks, and Waste Heat Recovery Units.