Radiators & corrugated tanks
Panel radiators and corrugated fin-wall tanks for ONAN distribution transformers, built to your drawing and leak-tested before shipment. Small lots and samples welcome.
Dimensions decide
everything.
To quote radiators or tanks we need
- Radiators: panel width, centre distance, number of panels, flange type
- Tanks: kVA rating and drawing with fin height, pitch and wall size
- Steel grade and sheet thickness, if specified
- Surface: paint system and colour, or hot-dip galvanising
- Pressure or leak-test requirement
- Quantity per order and per year
Radiators and tanks
by the numbers.
Panel radiators are bolted to the tank through flanges and valves; corrugated (fin-wall) tanks replace radiators on most hermetic distribution transformers up to about 2,500 kVA.
Reference values from the standards and common practice, not a model datasheet. Exact dimensions, ratings and test coverage are confirmed against your drawing.
Panel radiators +
| Panel width | Commonly 310, 460, 480 or 520 mm; others to drawing |
|---|---|
| Centre distance | From about 500 mm to over 3,000 mm, in steps set by the design |
| Panels | Typically 6 to 40 per radiator |
| Connection | Welded flanges for butterfly valves; bolt pattern to drawing |
| Reference | EN 50216-6 (removable radiators); JB/T 5347 in China |
Corrugated fin-wall tanks +
| Use | Hermetically sealed oil-immersed distribution transformers |
|---|---|
| Fins | Height, pitch and number set by the cooling calculation on your drawing |
| Sheet | Cold-rolled steel fins; thicker steel for frame, cover and base |
| Fittings | Lifting lugs, earthing pads, drain valve and rating-plate bracket to drawing |
Tests and finish to agree +
| Leak test | Pressure or vacuum test on every radiator and tank |
|---|---|
| Surface | Shot-blasting, primer and topcoat; coating thickness by agreement, or hot-dip galvanising |
| Records | Test record per unit; coating-thickness readings per lot |
Send a drawing.
Get a price and a sample plan.
- Send the drawing or part number with ratings, standard and yearly quantity.
- We quote within one week: unit price, lead time, packing and sample cost.
- Samples first for new parts, before any production order.
- Small lots welcome. We consolidate bushings, radiators and insulation parts in one shipment.
Parts are made by specialised partner factories in China and inspected before shipment. Which factory, and which routine-test records come with a part, is stated in each quotation.
Send a drawing ↓
Bring your next project
into focus.
Explore the equipment guide and prepare your requirements with our fillable project sheets.