Our surface heaters provide highly efficient, uniform, and localised heating strictly required for advanced manufacturing, processing, and environmental control. Utilising key technologies such as electric resistance heating, infrared panels, and highly adaptable conductive mats, they excel in applications requiring exacting curing, melting, and precise process temperature control. These systems deliver maximum energy efficiency and significantly lower operating costs.
Because the heating component is mounted externally, it is essential to utilise proper insulation to ensure that all generated heat transfers into the vessel rather than heating the surrounding air by convection. Empirical data clearly show that our properly insulated systems use only a fraction of the heat consumed by uninsulated ones. Furthermore, there is no technical limit to the physical size or shape of our surface heating systems.
Our expansive conductive thermal matrix strictly accommodates every industrial requirement. For complex geometries and micro-components, we deliver ultra-adaptable Flexible Surface Heaters, bespoke Flexible Heated Jackets, and Kapton-based Semi-Rigid Surface Heaters. For extreme-temperature operations, our interlocking Flexible Ceramic Surface Heaters and Rigid Ceramic Surface Heaters provide unmatched thermodynamic stability. Heavy industrial processing is permanently safeguarded by our ultra-robust Metal Surface Heaters, while expansive petrochemical pipelines utilize our highly controllable Trace Heating Systems. Finally, we supply highly efficient electric and hydronic Underfloor Heating Systems for space heating in domestic and commercial facilities, strictly adhering to global industrial standards (IEC, ISO, UL).
Construction:
Our flexible ceramic heaters consist of advanced resistance-wire coils heavily sheathed in interlocking, modular sintered alumina oxide insulation blocks. These high-density blocks are meticulously built into a cohesive mat or pad that can be formed into almost any geometric shape or size. Engineered for extreme thermodynamic environments, these assemblies seamlessly achieve continuous operating temperatures up to 1580 °C. Flexible infrastructure accommodates both curved and flat configurations. We offer dedicated low-voltage setups (30V, 40V, 60V, and 80V for transformer power supply consoles) and medium-voltage configurations up to 255V. Cold tails utilise low-resistance multi-strand 202 nickel, fusion-welded directly to the element core to permanently eliminate junction failures. Operating at high watt densities, these heaters require firm clamping to the targeted heatsink; Indelex provides specialised clamping structures optimised for industrial applications.
Our flexible ceramic pad heaters are extensively deployed in highly demanding high-temperature industrial applications. Primary use cases include precise pre-welding and post-welding heat treatment in heavy pipeline construction, structural vessel fabrication, shipbuilding, and steam boiler repair. They are also widely utilised for critical metal surface heat treatments, heavy engine component repair, exact mould and die preheating, and demanding furnace construction or continuous repair operations.
Construction:
Our flexible heated jackets are custom-fabricated from premium high-temperature resistant materials, including aluminised glass cloth, PTFE-coated glass fabric, and heavy-duty woven glass cloth. Optimal thermodynamic retention is achieved via thick needle mat insulation utilising industrial-grade fibreglass or Superwool™. They can be precisely formed and stitched into literally any 3D shape using ultra-durable, high-temperature Kevlar thread. Depending on the material matrix, they easily withstand extreme continuous temperatures up to 600 °C. These bespoke jackets feature built-in electrical heating circuits to rapidly raise or reliably maintain process temperatures and can integrate forced-air cooling circuits if required. Various mechanical attachments are engineered for rigorous deployment, including heavy-duty hooks, lacing, ties, Velcro™, precision grommets, straps, and robust banding.
Flexible heated jackets are essential in numerous advanced industrial applications that require precise thermodynamic control. They are utilised for critical process temperature maintenance, extreme-vacuum bakeout procedures, precise mould preheating, and extruder barrel insulation. In addition, they provide highly reliable freeze protection for pumps and valves, radar/antenna systems, precise chemical viscosity control, and seamless, continuous composite processing.
Construction:
Flexible surface heaters are highly adaptable thermodynamic components consisting of high-grade resistance wire, foil tape, or pre-insulated heating cable perfectly encapsulated within one or more layers of flexible dielectric insulating material. Engineered with an exceptionally thin profile, they seamlessly heat complex components and machinery where bulky heating infrastructure is impractical. These specialised mats, jackets, blankets, and panels operate reliably at temperatures up to 400 °C. We utilise a massive variety of premium industrial materials, including silicone rubber, Kapton, Nomex, Mylar, quartz cloth, glass cloth, advanced epoxy, and aluminium foil. Substrates can be self-adhesive, mechanically strapped, banded, or secured by integral eyelets. They feature built-in thermostats, precision thermocouples, integral insulation, and strict moisture-resistant ratings for deployment in moist environments, available in micro-dimensions for highly irregular mechanical geometries.
Flexible surface heaters are extremely versatile and deeply integrated into diverse industrial processing pipelines. They deliver precision temperature maintenance, absolute frost protection, and anti-condensation heating for tanks, conical hoppers, and vats. Common applications span the demanding petrochemical, mining, pharmaceutical, medical technology, food processing, and chemical sectors. They facilitate pumping heat-sensitive materials and ensure reliable battery warming, aircraft de-icing, and composite curing.
Construction:
Our heavy-duty solid metal or metal-clad surface heaters consist of premium resistance wire, tape, or rod-type elements strictly mounted or clad in robust metal housings and heavy industrial castings. Engineered specifically for highly arduous, extreme-environment operating conditions, they integrate specialised, high-density insulating material. While intentionally non-flexible, their ultra-robust construction guarantees uncompromising mechanical integrity in the harshest industrial facilities. Specific variants confidently operate at continuous temperatures up to 500 °C and handle extreme industrial voltages up to 690V. They feature precision-manufactured fixing holes, heavy-duty clamps, or external banding straps for direct mechanical fixing to the working surface. Fabricated to almost any size or structural shape (circular, curved, or angled), they house complex, multi-circuit systems, built-in RTD sensors/thermostats, and integral thermal insulation.
Metal surface heaters are widely used in extreme industrial applications that demand uncompromising durability and higher continuous operating temperatures. They provide exact temperature maintenance, absolute frost protection, and anti-condensation heating for large-scale tanks, conical hoppers, and pressurised vats. Their applications span heavy petrochemical refining, mining, pharmaceutical manufacturing, medical tech, and food processing operations, as well as critical aircraft/marine de-icing and structural lamination.
Construction:
Our flat, rigid ceramic heating elements comprise a specialised helix of nickel-chromium resistance wire meticulously encapsulated in high-temperature calcium silicate ceramic insulation. This design delivers unparalleled thermal stability for rigorous industrial heating applications that require continuous operation at temperatures up to 500°C. These advanced flat-panel heaters are highly customizable in terms of bespoke physical shapes, dimensions, wattages, and broad voltage ranges. The calcium silicate ceramic body strictly operates as the sole required dielectric insulation, permanently eliminating the need for secondary electrical isolation barriers. They are supplied with engineered mounting holes for heavy-duty bolting or clamping, ensuring direct contact with the heatsink to prevent air gaps that destroy efficiency. For extreme high-voltage applications, they can be equipped with rigid mica plates to maximise dielectric strength. They are highly resistant to common industrial alkalis and solvents.
Our rigid ceramic surface heaters are extensively utilised across heavy B2B sectors for exact temperature maintenance, deep frost protection, and industrial anti-condensation heating of tanks, conical hoppers, and processing vats. Applications strictly span petrochemical refining, mining, pharmaceuticals, food packaging, plastic injection moulding, polymer extrusion, and heavy rubber moulding. They reliably facilitate the continuous pumping of highly viscous, heat-sensitive materials.
Construction:
Our semi-rigid surface heaters are divided into two distinct, highly advanced constructions. Type 1 elements feature a precise helix of nickel-chromium resistance wire encapsulated in robust ceramic insulation or specialised insulated resistance cables sheathed in highly efficient self-adhesive foil carriers. Type 2 elements are precision-computer-designed, utilising micro-chemically etched foil tracks perfectly laminated between ultra-thin sheets of high-temperature polyamide (Dupont Kapton™), structurally resembling advanced printed circuit boards. Kapton Polyimide strictly delivers exceptional dielectric strength and high resistance to fungi, bacteria, ozone, harsh weather, and concentrated industrial chemicals/solvents. Type 2’s ultra-thin, silicone-free profile drastically improves rapid heat transfer to micro-components, supporting extremely high surface loads and razor-close PID temperature control when paired with modern solid-state relays or high-frequency thyristors.
Type 1 elements are widely used in robust plastics processing, packaging, and commercial foodservice to reliably maintain temperatures of viscous liquids and chemicals. Type 2 elements are strictly deployed where ultra-low weight, negligible thermal mass, and extremely rapid thermodynamic response are required. Typical critical applications include Aerospace, Defence, Satellite Technology, advanced Semiconductor Fabrication, highly sensitive Medical Devices, and ultra-precise laboratory analytics equipment.
Construction:
Trace heating is an advanced electrical infrastructure system engineered to systematically maintain or raise the temperature of large-scale pipework, pressure vessels, and critical equipment by thermodynamically compensating for ambient heat loss. The architecture involves securing specially engineered heating cables directly onto industrial pipe/tank surfaces to ensure precise fluid flow. The three primary cable formats are Self-Regulating, Constant-Wattage, and Mineral-Insulated (MI). MI cables employ high-grade resistance wire in a heavy metal sheath, heavily insulated with compressed magnesium oxide, to handle very high output temperatures. Constant-Wattage cables provide uniform output (up to 200 °C) via specialised polymer coatings. The dominant Self-Regulating cables utilise a highly advanced semiconductive polymer that exhibits a positive temperature coefficient; as ambient temperature increases, electrical resistance intrinsically increases, thereby reducing the thermal output to permanently prevent catastrophic overheating. Complete systems include cables, specialised thermal insulation, RTD sensors, and precision monitoring controllers.
Trace heating is strictly relied upon to ensure absolute process integrity, permanently preventing critical fluids from freezing, dangerously solidifying, or deviating from required parameters in harsh environments. They are utilised across heavy construction, chemical refining, and manufacturing. Self-regulating systems are uniquely critical for hazardous-area (ATEX/IECEx) compliance, as their inherent self-limiting physics ensure that surface temperatures remain within strict limits. They also ensure anti-freeze safety on massive car park ramps, aircraft runways, and deep-freeze industrial chilling plants.
Construction:
Underfloor heating systems are highly specialised, high-efficiency arrays of trace-heating cables (Electric/Dry) or distributed hot water piping (Hydronic/Wet) integrated into the core fabric of occupied buildings. By utilising the entire floor area as a massive thermodynamic radiation surface, they deliver highly uniform, precisely controllable temperatures while eliminating the need for exposed radiators or heavy radiant panels. Our bespoke systems strictly support complex multi-zone configurations for pinpoint room-by-room temperature control. Both electric and hydronic variants are fully customizable to the room’s exact geometric dimensions. Indelex engineers and supplies all critical hardware, including advanced pipe-holding fittings, hermetic joints, precision manifolds, high-flow valves, structural insulation slabs, thermal castellated mats, digital sensors, and high-efficiency circulation pumps. Electric systems are optimised for both rapid new builds and complex legacy structural retrofits.
Our modern underfloor heating systems are highly versatile, seamlessly supporting virtually every architectural flooring material. Both wet and dry systems effortlessly integrate into heavy concrete floor screeds. For specialised structural retrofits, we provide cutting-edge carbon-printed PET foil heaters that are extraordinarily thin (approximately 0.4mm), allowing direct, seamless installation immediately beneath ceramic tiles, commercial carpets, or hardwood flooring without impacting structural elevations.
