Silicon Steel Core for Oil Immersed Transformer
Sep 29, 2025
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Silicon Steel Core for Oil Immersed Transformer Product Description

Silicon steel core
Silicon steel sheet is an indispensable soft magnetic alloy in the power, electronics and military industries, and is also the largest metal functional material, mainly used as the iron core of various motors, generators and transformers.
transformer core Structural features
● The products are diversified, mainly including main transformer core, dry type transformer core, oil-immersed distribution transformer core, new energy transformer core, three-dimensional core etc.
● Using high magnetic induction-oriented silicon steel (HiB), the grades are 18SQGD065, 20SQGD070, 20SQGD075, 23SQGD080, 23SQGD085, 27SQGD090, 27SQGD095, 27QG100,27QG110,27QG120 and other mainstream silicon steel strip to meet customers' different needs.
● Clamps are made of high-strength steel, CNC bending forming, high mechanical strength, more accurate size and positioning, smooth and beautiful appearance.
● The core insulation adopts PET(F class) insulation material to ensure the transformer will not discharge, leakage, breakdown .
● Silicon steel core have superior performance, with low loss, low noise, low no-load current, high mechanical strength, strong short-circuit resistance, small partial discharge, good insulation performance, good thermal stability, excellent process coefficient, beautiful appearance.
● The silicon steel sheet is processed by the international advanced automatic intelligent production line, with high processing precision, small burr, good flatness and high efficiency.
● Stable personnel with high proficiency, effectively ensure the ability and quality.
● In cooperation with related enterprises and research institutions, the products have the advantages of low process coefficient and low noise.
● Assist customers to optimize the design, improve the performance of transformer cores.
transformer core specifications
|
item |
value |
|
Place of Origin |
China |
|
Henan |
|
|
Product Name |
transformer core |
|
Application |
Power Transformer, Distribution Transformer |
|
Low Voltage |
0.4kv |
|
Rated Capacity |
30-2500kva |
|
High Voltage |
10kv |
|
Frequency |
50HZ |
|
Shape of Core |
Ring |
|
Core Materia |
Silicon Steel |
GNEE Featured Products
Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process

1. Raw Material Sourcing

2. Slitting

3. Punching

4. Laminating

5. Core Forming

6. testing
GNEE EC
Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.

30+
Types of Products
18k+
Happy Clients
Why Choose GNEE EC?
GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
35+
Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
1,000+
Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
Gnee Iron Core Factory Overview






Meet Our Sales Manager
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Edison Zhang
CEO

Kelly Zhang
General Manager

Alex Cao
Sales Manager
Industries Served

Automobile Industry

New Energy


Transformer Applications

Our Mission
Strive To Create world-class Iron core brand
With 18 Years of industry experience, we focus on the research, development, and manufacturing of high-quality iron cores for electricity, industrial control, new energy, and automotive markets











