Tubular Heaters

HEAT OUTPUT: The highest quality materials and construction techniques enable HI tubular heaters to offer the maximum heat output (max., watts per sq., inch of sheath surface) at any given temperature. The same factors provide the longest possible operating life under less severe conditions.

Versatility: Heaters India tubular heaters can be designed in a wide range of electric ratings, diameters, lengths and sheath materials, with various termination styles. Due to the construction characteristics, the heating element is electrically isolated from the sheath. This allows for forming them into virtually any shape – wrap around machine parts, brazed or welded to any metal surface, cast into metals immersed in liquids or used as convection or radiant heaters.

Reliability: Heaters India Tubular heaters are unequaled in their resistance to shock, vibration, corrosion, high-temperature and moisture condensations. They are unexcelled by any other form of electric heating element for reliability and ruggedness.

Economy: When high temperature, physical and electrical strength are required, Heaters India tubular heaters provide the most economical solution to hundreds of heating applications.

Applications:
Combination radiant and convection heaters for ovens, air spaces between containers and outside walls and thermoforming machines.
Contact heaters placed in grooves, milled in metal plates, wrapped around or laid alongside pipes, held against metal containers.
Cast-in heaters are formed tubular heaters placed in aluminum, brass, or silicon bronze castings. Typical uses are for heat sealing platens, barrel heating of extruders, and plastic injection molding machines. Heating of irregular or non-symmetrical surfaces and cast tanks with built in heaters.
Tubular heaters are often used to heat substances directly. Typical examples are steam boilers, and laboratory water baths.
Tubular heaters can be supplied four ways, welded or brazed to bulk head fittings, steel plates, pipe flanges, and N.P.T pipe plugs.
Basic sheath recommendations

COPPER: Ideally suited for water heating and water solutions non-corrosive to copper.

STEEL: For immersion in circulating and non-circulating oils, alkaline cleaning solutions, molten salt drawing and tempering baths, molten soft metals, waxes and puffins, heavy compounds such as tars and asphalts. Steel sheath heaters are also suitable for clamping to metal surfaces, casting into aluminum or bronze.

STAINLESS STEEL: Primarily used for corrosive substances and food processing equipments.

INCOLOY: Typical applications are radiant heating, immersion in plating and pickling solutions, oils, cleaning and degreasing solutions, molten salts and heavy compounds where materials are corrosive to steel, immersion in vapor degreasing solutions containing free acids and immersion in mineral oils. Incoloy sheath heaters can also be applied to air heating, casting into iron and clamping to metal surfaces.
The proper selection of sheath materials and watt density rating is essential for good heater life and trouble free service.