The transformer tank is one of the most important components of an oil immersed transformer. It not only provides a sealed enclosure for transformer oil and internal active parts but also plays a critical role in heat dissipation and transformer reliability.
The corrugated transformer tank has become a widely used solution for modern distribution transformers due to its compact structure, excellent cooling performance, and integrated oil expansion compensation capability.
Compared with conventional flat wall transformer tanks, corrugated tanks use specially formed corrugated steel panels to increase heat dissipation area and absorb transformer oil volume changes caused by temperature fluctuations.
As a professional Corrugated Transformer Tank Manufacturer, Radiastar provides customized transformer oil tanks and transformer components for global transformer manufacturers, utilities, and industrial power projects.
A corrugated transformer tank is a sealed steel enclosure designed for oil immersed transformers. The tank body is manufactured with specially pressed corrugated walls, which provide two major functions:
The corrugated structure allows the tank wall to slightly expand and contract according to transformer oil temperature changes, reducing the need for additional expansion equipment.
Typical applications include:
The S Series oil immersed transformer corrugated tank mainly consists of:
The corrugated panels are manufactured through a dedicated corrugation forming line to ensure accurate dimensions and consistent quality.
During production, the long and short corrugated panels are precisely assembled and connected through gas shielded welding technology.
The short corrugated panels are designed with special right-angle edges. The long corrugated panels are inserted into these edge structures, creating a stable welding connection.
This structural design provides several advantages:
A transformer corrugated tank is filled with insulating oil, which performs two essential functions:
During transformer operation, losses generated by the core and windings produce heat.
The heat transfer process is:
Transformer Windings
↓
Hot Transformer Oil
↓
Corrugated Tank Wall
↓
Ambient AirThe transformer oil absorbs heat from internal components and transfers it to the corrugated tank wall. The heat is then released into the surrounding environment through natural air convection.

Transformer oil expands and contracts due to temperature variations during operation.
When transformer load increases:
The flexible corrugated walls deform slightly outward to accommodate the increased oil volume.
When the transformer cools down:
This design helps maintain stable internal pressure and reduces the risk of moisture entering the transformer.
Compared with traditional transformer structures, corrugated tanks provide a more compact and maintenance-friendly solution.
Cooling performance is one of the most important advantages of corrugated transformer tanks.
The corrugated structure significantly increases the external surface area compared with flat tank walls.
A larger cooling surface improves heat exchange efficiency between transformer oil and surrounding air.
Transformer cooling depends on natural convection.
When oil temperature changes:
This continuous circulation transfers heat away from the transformer windings.
The vertical corrugated panel design improves oil circulation and enhances cooling efficiency.
A corrugated transformer tank integrates:
into one structure.
Benefits include:

The increased surface area of corrugated panels improves heat dissipation and helps maintain stable transformer temperature.
The sealed structure reduces:
which helps extend transformer service life.
Corrugated tanks provide:
making them ideal for outdoor transformer applications.
Radiastar uses professional welding technology and inspection procedures to ensure:
Radiastar corrugated transformer tanks are widely used for:
Typical applications include:
and other customized transformer ratings.
Corrugated transformer tanks are widely applied in:
Radiastar follows strict manufacturing procedures to ensure product reliability.
High-quality steel plates are processed through:
to achieve accurate tank components.
Special corrugation equipment is used to control:
ensuring consistent production quality.
Advanced gas shielded welding technology ensures:
Each transformer tank undergoes:
to ensure safe operation.
The tank surface is treated with:
to improve durability in outdoor environments.
| Feature | Corrugated Transformer Tank | Traditional Flat Wall Tank |
|---|---|---|
| Cooling Area | Larger | Smaller |
| Oil Expansion | Integrated compensation | Usually requires conservator |
| Structure | Compact | Larger size |
| Maintenance | Lower | Higher |
| Application | Distribution transformers | Large transformers |
Radiastar specializes in manufacturing transformer components, including:
Our manufacturing capabilities include:
✔ Customized design
✔ OEM production
✔ Drawing-based manufacturing
✔ Welding inspection
✔ Leakage testing
✔ Export packaging
Radiastar supports customers with complete transformer tank solutions based on:
To receive an accurate quotation, customers should provide:
Radiastar provides customized:
Corrugated Transformer Tank Manufacturing Solutions
for transformer manufacturers and electrical companies worldwide.
A corrugated transformer tank is an oil-filled transformer enclosure with corrugated steel walls designed to improve cooling and compensate for transformer oil expansion.
Corrugated tanks provide better heat dissipation, compact design, and reduced maintenance compared with traditional transformer tanks.
Most transformer tanks are manufactured from high-quality carbon steel with protective coatings for corrosion resistance.
Yes. Radiastar provides OEM corrugated transformer tank manufacturing according to customer drawings, transformer specifications, and project requirements.
A well-designed corrugated transformer tank is not only a protective enclosure but also an important part of transformer thermal management.
Through optimized corrugated structure design, reliable welding technology, and strict quality control, Radiastar provides high-performance transformer oil tanks that help improve transformer reliability, cooling efficiency, and service life.
As an experienced Corrugated Transformer Tank Manufacturer, Radiastar is committed to delivering customized transformer tank solutions for customers worldwide.















