For transformer manufacturers, a radiator may look like a simple component.But one small leak can create a much bigger problem.Oil leakage may lead to rework, delayed transformer assembly, additional transportation costs and customer complaints. For this reason, transformer radiator leak testing is an important part of the purchasing process.
Especially for transformer manufacturers in Southeast Asia, reliable radiator quality is essential. High temperatures, humidity and long-distance transportation can all place additional demands on transformer components.
So, how can transformer manufacturers reduce the risk of radiator leakage before delivery?
Why Does Transformer Radiator Leakage Happen?
Radiator leakage is usually related to several factors.
Poor Welding Quality
The welded joints are one of the most important areas of a transformer radiator.
Inconsistent welding may create small defects that are difficult to identify during a simple visual inspection.
For this reason, welding quality should be controlled throughout the manufacturing process.
Incorrect Dimensions or Assembly
A radiator is often manufactured according to a specific transformer design.
If the dimensions or connection positions are incorrect, problems may occur during installation and assembly.
Drawing-based production can help reduce these risks.
Insufficient Testing
A radiator may look perfect from the outside and still have a small leakage problem.
This is why a proper transformer radiator pressure test and leak test are important before shipment.
Why 100% Leak Testing Matters
At Nantong Zhihe Electric, transformer radiators undergo 100% leak testing before delivery.
This means each radiator is checked rather than relying only on random sampling.
Depending on project requirements, pressure testing can reach up to 150 kPa.
The purpose is simple:
Find potential leakage problems before the radiator reaches the customer's factory.
For international customers, this is especially important.
Once a radiator has been shipped overseas, replacing or repairing a defective product can take much more time and cost much more money.
Welding Quality Is the First Line of Defense
A reliable leak testing process is important, but welding quality is equally critical.
Our production process combines automated welding with professional inspection procedures.
Automated production helps improve consistency during repeated manufacturing, while quality inspection focuses on critical welded areas and product dimensions.
For transformer manufacturers, this can help reduce the risk of:
- Oil leakage
- Rework
- Production delays
- Installation problems
Custom Radiators Require More Careful Quality Control
Not every transformer uses the same radiator.
Different projects may require different:
- Radiator dimensions
- Panel numbers
- Center distances
- Connection sizes
- Mounting positions
At Nantong Zhihe Electric, we support custom transformer radiator manufacturing based on customer drawings and technical specifications.
The typical process is:
Drawing Review → Production Confirmation → Manufacturing → Leak Testing → Final Inspection → Shipment
This process helps ensure that the radiator matches the customer's transformer design before delivery.
More Than Just Leak Testing
Leak testing is important, but a reliable transformer radiator also needs to provide stable long-term performance.
Depending on the project requirements, our transformer radiators can also be supplied with:
- Automated welding
- Pressure testing up to 150 kPa
- C3–C5 anti-corrosion protection
- Galvanized surface treatment
- Customized dimensions
- OEM/ODM manufacturing
This is particularly important for transformer projects in Southeast Asia, where high humidity, heavy rainfall and coastal environments may increase corrosion risks.
Why Transformer Manufacturers Choose Nantong Zhihe Electric
At Nantong Zhihe Electric, we focus on the details that can affect the final transformer assembly.
Our manufacturing capabilities include:
- 7 automated production lines
- Up to 100 sets per day
- Automated welding
- 100% leak testing
- Pressure testing up to 150 kPa
- C3–C5 anti-corrosion protection
- Galvanized transformer radiators
- OEM/ODM customization
- Drawing-based manufacturing
We manufacture transformer radiators and other transformer sheet metal components for international customers.
Our goal is not simply to produce a radiator.
It is to provide a component that arrives at your factory ready for assembly.
Looking for a Reliable Transformer Radiator Manufacturer?
If you are sourcing transformer radiators for projects in Vietnam, Indonesia, Thailand, Malaysia, the Philippines or other markets, quality control should be considered from the beginning of the purchasing process.
Before placing an order, ask your supplier:
Is every radiator leak tested?
What pressure testing is available?
How is welding quality controlled?
Can the radiator be manufactured according to drawings?
What anti-corrosion protection is available?
Can the supplier support repeat OEM orders?
A reliable supplier should be able to answer these questions clearly.
If you are looking for a transformer radiator manufacturer with custom manufacturing and leak-testing capabilities, send us your drawings or specifications.
We can review your requirements and provide a suitable solution for your transformer project.
Nantong Zhihe Electric - Reliable Transformer Radiators and Sheet Metal Components for Power Transformer Manufacturers.
Have a transformer radiator project? Send us your drawings and request a quotation.
