Transformers are the core hub of the power grid. When current flows through a transformer, losses generate a significant amount of heat, which severely impacts the transformer's operational stability and lifespan. Our high-efficiency transformer radiators ensure optimal oil circulation, extending equipment lifespan and preventing downtime risks.
What is a transformer radiator?
A transformer radiator is a key component of an oil-immersed power transformer. It dissipates heat into the air through heat exchange. During transformer operation, the insulating oil heats up and flows into the radiator fins. The large fin area of the radiator allows the insulating oil to release heat into the air more quickly, achieving cooling, and then returns to the transformer to continue absorbing heat.
Without a reliable radiator supplier, you'll end up with low-quality products. Using these products will expose your transformer to the risks of overheating, insulation aging, and even sudden power outages.
Why choose Zhihe transformer radiators?
Superior heat dissipation performance: Large surface area fin design maximizes airflow.
The internal oil channels utilize a varnishing process, resulting in smooth internal channels that reduce resistance and accelerate cooling circulation.
Robust Construction and Leak-Proof Design
Made with high-quality carbon steel (e.g., Q235B) or galvanized sheet.
Each product undergoes a leak test before leaving the factory.
Customizable to Your Needs
Radiator fin size: From 650mm to 3500mm (customizable).
Number of fins: 12 to 60 fins per group or more.
Installation method: Direct mounting or removable.
Corrosion-Resistant Coating
Available with marine-grade coatings from C3 to C5.
Suitable for coastal areas, industrial zones, and high-humidity environments.
How to Choose the Right Transformer Radiator?
✅ Check the transformer's MVA rating – Larger capacity requires a larger cooling surface area.
✅ Confirm the installation method – Direct bolt mounting or a separate radiator assembly with an oil pump?
✅ Consider the ambient temperature – High-temperature areas require additional cooling margin.
✅ Verify inlet and outlet valve dimensions – Standard sizes include: DN80, DN100, DN150, etc.
Application Areas
✔ Substations (Up to 220kV)
✔ Industrial and Mining Enterprises
✔ Wind and Solar Power Plants
✔ Railway Traction Systems
✔ Data Center Backup Generators
Wholesale and OEM Services for Global Customers
We are a direct manufacturer of transformer radiators, not a middleman. Whether you need:
Small batch orders for maintenance replacement
Large wholesale orders for transformer production lines
Custom colors, sizes, or materials
We can ship to Europe, North America, Southeast Asia, the Middle East, and Africa.
Production Lead Time: 7-10 days.
Certification: We are ISO 9001:2015 certified.

Frequently Asked Questions
Q: Can you make one exactly the same size as my old radiator?
A: Yes. Send us your drawings or old radiator samples, and we will produce a perfectly matching replacement for you.
Q: What is the minimum order quantity (MOQ) for wholesale?
A: The MOQ for standard sizes is 10–20 sets.
Q: Do you provide sea freight packaging?
A: Yes. We use export packaging reinforced with wooden pallets, stretch film, and steel straps to ensure no damage during transportation.
Get a wholesale quote now! Don't let transformer overheating shorten your equipment's lifespan. Send us your required dimensions, quantity, and drawings to our team for a quick quote.
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WhatsApp: +86 13073208690
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