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Transformer Radiators

Transformer Radiators

Techarsh manufactures pressed-steel radiators for power and distribution transformers as per Customer Specifications and Drawings. Every radiator is produced to an approved drawing with defined controls for material, forming, welding, dimensional accuracy, leak integrity, surface preparation and coating.

Product applications:-

► Power transformers

► Distribution transformers

► Renewable-energy transformers

► Industrial and utility transformer systems

► Custom OEM transformer designs

Types of Radiators

Product applications:-

► HEADER TYPE RADIATORS

► SWAN- NECK TYPE RADIATORS

► GALVANISED RADIATORS (HDG)

► GOOSE NECK TYPE RADIATORS

► OFFSET RADIATORS

► WELDED TYPE RADIATORS

► Custom header pipes, valves, lifting and mounting arrangements

► Customer-specified identification, marking and packing

Quality

Quality at Techarsh begins with drawing review and incoming material verification. It continues through first-off approval, dimensional inspection, weld control, leak or pressure testing, surface preparation, coating checks, final inspection, identification and dispatch release. This process-based approach helps us deliver consistent products—not simply inspected products.

Internal treatment

Radiators are cleaned internally before the specified treatment. Depending on the approved customer requirement, Internal surface is cleaned with Pressurised Air to remove any hard particles and then solvent cleaning is done to ensure completely dust or any residue inside. Then internal surface is flushed with compatible insulating varnish or Hot Oil Resistant and transformer oil as per customer requirments.


External surface preparation and painting

External surfaces are degreased to remove oil, grease and contamination. Shot blasting is performed to achieve the required surface cleanliness and profile before coating. Painting systems may include zinc primer, zinc-rich primer, MIO, epoxy and polyurethane coats in the approved sequence, colour and dry-film thickness suitable for paint schemes like C3, C4, C5M, C5H, CX.

Testing and inspection

Radiators are checked for dimensions, workmanship, weld quality, leak integrity and coating requirements. The standard radiator integrity test is air pressure testing at 2 kg/cm² under water for 30 minutes, unless the approved customer specification requires a different procedure.

Dimensional inspection against approved drawing

Visual weld and workmanship inspection

Air pressure test under water

Surface-profile and cleanliness checks, where specified

Dry-film thickness measurement

Adhesion or pull-off testing, where specified

Dust-contamination and coating-finish checks

Final marking, quantity and packing verification

RADIATOR CAPABIILITES

The following range represents typical radiator capability. Final manufacturability is confirmed after review of the complete drawing, material specification, tolerances, accessories, coating system and testing requirements.
Parameter Indicative capability
Radiator width Sheet thickness
300 mm and 520 mm 1.00 mm and 1.20 mm
Panel/flute design Centre-to-centre distance
24-flute pressed-steel design 600 mm to 4,000 mm
Number of fins Standard fin pitches
Up to 40 fins 40, 45, 50, 60, 65 and 75 mm ( CUSTOMISED IF NEEDED)
Offset Flange arrangement
130 MM OFFSET DESIGN With or without flange, subject to drawing