We manufacture panel radiators in Q235B carbon steel for standard service and 304 stainless steel for environments that demand superior corrosion resistance. Both options are produced as pressed-steel radiators for oil-immersed power and distribution transformers.

Q235B carbon steel is durable and cost-effective for most installations and relies on a protective coating system for corrosion protection. 304 stainless steel offers inherent corrosion resistance, making it preferable for coastal, humid or chemically aggressive sites, though at a higher unit cost.

Our pressed-steel panel radiators are manufactured in reference to the Chinese industry standard DL/T 1266-2013, “Selection guide to the panel-type radiators for transformer,” and are designed to support transformer temperature-rise performance aligned with IEC 60076-2 and IEEE C57.12.00.

Every unit undergoes pressure and leak testing. Radiators are pressurized with air and held for a sustained period, then verified using submerged-water and soap-bubble methods to confirm there are no micro-leaks before surface treatment.

Yes. Our radiators support both ONAN (Oil Natural Air Natural) self-cooled operation and ONAF (Oil Natural Air Forced) forced-air operation. Adding cooling fans in ONAF mode increases the dissipated load the cooling system can handle, depending on the overall transformer design.

We can produce radiators with flanges to DIN (European), ANSI (American) and GB (Chinese) standards, so the assemblies integrate cleanly with your transformer tank, valves and connecting pipework.

Carbon-steel radiators are shot-blasted and then finished with a protective coating system—options include hot-dip galvanizing, electrostatic powder coating, or multi-layer paint, selected according to the corrosivity of the installation environment.

Common panel widths include 480 mm and 520 mm, with center distances and overall heights configured to your transformer design. Custom dimensions are produced from your drawings or specifications.

Lead time depends on order volume, material and customization. For the standard models shown on this site, indicative production lead times range from 5 to 11 days; a confirmed schedule is provided on order confirmation.

Radiators are secured on heavy-duty pallets or in reinforced wooden crates with protective wrapping and battens, packed for sea freight to prevent surface and transit damage. We work with FOB, CIF and EXW Incoterms.

Yes. Our engineering team works from your drawings and specifications to produce radiators tailored to specific dimensions, materials, flange standards and coating requirements for your transformer program.

We support buyers across North America, Europe, the Middle East and Southeast Asia. Before committing to a larger order, your team can request material test reports, dimensional inspection data, factory process videos and sample production for evaluation.