Heat Treatment


Treatment you can trust

Heat Treatment

Tried and tested

Providing the highest level of quality is the hallmark of Verispex that has companies turning to us to overcome their thermal challenges and perform heat treatments all over the world.

We are ISO 9001 compliant and offer a full catalog of capabilities to meet all your heat treatment needs.

Heat Treatment



  • Electrical surface heating
  • Refractory dryout and curing
  • Ladle drying
  • Pre- and post-weld heat treatment
  • High-velocity fuel-fired heat treatment
  • Furnace heat solutions
  • Thermal stress analysis

VeriSpex has the manpower and equipment to support design, engineering, treatment, inspection, and maintenance work, along with the ability to continue working in the case of a major shutdown.

Treatment you can trust

Highly Equipped

With over 7500 KW of applied resistance heat at our disposal, Verispex is able to manufacture electrical resistance heating elements in a range of sizes to suit a wide array of applications. Our electrical resistance heat treatment services include onsite preheating; hydrogen de-gassification; and post-weld heat treatment of pipework, welded fabrications, and pressure vessels.

Verispex’s electrical resistance heating elements are manufactured in a range of sizes to suit an array of applications and are connected to either low-voltage (65-volt) or high-voltage (240-volt) power sources. Each low-voltage power source is rated at 50 kva, has a minimum of 6 individually controllable outlets, and can power a maximum of 18 heaters of 2.7 KW.

Temperature is controlled via pre-programmable microprocessor-based modules; temperature measurement made by pre-calibrated digital temperature recorders all calibrated in accordance with national standards.

Preserve and Protect

The use of Verispex high-velocity burners is an effective method of curing and driving out moisture from refractory materials.

Verispex uses high-velocity burners fired by either LPG or diesel oil for the onsite heat treatment of large fabrications, pressure vessels, and temporary furnaces.

High-velocity fuel applications include:

  • Caustic or sulfuric liquid storage tanks
  • Reactor vessels
  • Hydro-active vessels
  • LPG storage spheres
  • Steel furnaces

Working under carefully controlled conditions, we eliminate the risk of damage that can be caused by spalling and thereby extend the life of the refractory.

An Economical Alternative

Verispex has developed transportable, lightweight, low-thermal-mass temporary furnace installations for the post-weld heat treatment of large-pressure vessels and fabrications. These furnaces are designed as a fast, convenient, cost-effective alternative to permanent furnaces and the high cost of transporting components to fixed installations. Temporary furnaces can be equipped with either gas- or oil-fired burner systems and both temperature control and distribution are equal to, or better than, most fixed furnace installations.

Maximum Flexibility with Minimal Downtime

We have extensive experience in controlled heating and ventilation for the drying of specialized linings. Expert Verispex technicians use state-of-the-art equipment: digital process controllers, fully proportional fuel actuators, and solid-state features to remove moisture while strictly monitoring heating rates to ensure against damage to lining materials.

Applications for heating and ventilating procedures include:

  • Induction furnace refractory dryout
  • Induction furnace cold start
  • Blast furnace refractory dryout
  • Coal gassification plant refractory dryout
  • Refinery cracker unit refractory dryout
  • Aluminum holding furnace refractory dryout
  • Cement kiln pre-heaters and coolers
  • Incinerator refractory dryout
  • Drying/curing of phenolic and catalyzed epoxy linings

A Full Catalog of Heat Treatment Capabilities

Verispex offers today’s most comprehensive range of surface (trace) heating systems, including self-regulating heating cables and constant-wattage trace heating cables (Isopad/Pyrotenax BICC ).

Electrical surface heating applications include:

  • Frost protection
  • Process temperature maintenance
  • Temperature raise
  • Static
  • Dynamic
  • Drying
  • Anti-condensation
  • Snow melting
  • Pentair Thermal Heat Tracing Products
  • Pentair, a leading supplier of self-regulating heaters boasts over 125 million meters of self-regulating heaters installed worldwide. A range of tapes is used in the heating of vessels, hoppers, piping, valves, pumps, or anywhere there are flow problems or condensation
Heat Treatment

Comprehensive Surface Heating Solutions

Verispex provides services ranging from the supply of material to full turnkey solutions including research, design, installation, and commissioning. Additionally, we offer pre and post-sale services.

Unparalleled knowledge and experience combined with a wide range of best-in-class products makes Verispex the company to turn to for all your heating services; from small-bore pipework to large storage tanks, mechanical capillary-action thermostats to modular monitoring and control systems handling up to 130 heat-tracing circuits, as well as everything in between:

  • Self-regulating cable
  • Constant-wattage cable
  • Mineral-insulated cable
  • Silicon rubber heated mats
  • Heated jackets