M4 Silicon Steel Rectangular Silicon Steel Laminations for Auto-Transformer
Oct 21, 2025
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Rectangular Silicon Steel Lamination
Rectangular Silicon Steel Laminations are components of silicon steel sheets with a rectangular cross-section. They form a closed magnetic circuit through orderly stacking. Their core advantages are regular structure, symmetric magnetic circuit, and convenient processing. They are widely used in electromagnetic equipment such as transformers, reactors, and motors, and are especially suitable for scenarios with clear requirements for magnetic circuit stability and installation space.
Rectangular Silicon Steel Lamination Feature
- Optimized Magnetic Permeability: M4 achieves excellent flux density, enhancing transformer efficiency.
- Low Core Loss: Reduces energy dissipation during operation, lowering energy costs.
- High Durability: Resistant to wear and stress, ensuring long service life.
- Precision Thickness Control: Consistent thickness for improved performance and reduced energy losses.
- Environmental Compatibility: Manufactured using sustainable processes to meet eco-friendly standards.
M4 Silicon Steel Application
- Power Transformers: M4's low core loss ensures higher efficiency in power transmission.
- Distribution Transformers: Excellent for reducing energy loss in residential and industrial grids.
- Electrical Cores: Provides stability and performance in core assemblies.
- Renewable Energy Equipment: Ideal for transformers in solar and wind energy systems.
Transformer Core specification
Premium Quality & Fully Assembled Transformer Cores
Maximum Weight of Automatically Stacked Core: 60 Tons
Maximum Weight of Manually Stacked Core: 120 Tons
Precision Gap Limit at the Joint: Less than 1.0mm
Window Height Precision Accuracy: ±1mm
Window Width Precision Accuracy: ±1mm
We meticulously calculate and constantly update the quotation based on your precise drawings, ensuring the highest accuracy and cost-efficiency.Upon your confirmation, we will promptly initiate production based on the detailed drawings you provide, ensuring exact adherence to your specifications.
Oriented silicon steel is a superior low-carbon silicon iron alloy with a silicon content of 0.5% to 4.5%. It boasts high permeability, greatly reducing Joule loss in power equipment, thus enhancing efficiency and promoting energy savings. Furthermore, it features lower iron loss and a high resistance coefficient.
Raw Material: Premium CRGO silicon steel sourced from Baosteel and WISCO.
| Type | Grade | Width | Max Core Loss@P1.7T/50Hz | Lamination Factor(%) | Min Induction@B800 |
| Common Type | 23Q110 | 35-1200mm | 1.10w/kg | 97.2 | 1.82T |
| 23Q120 | 1.20w/kg | 97.2 | 1.82T | ||
| 27Q120 | 1.20w/kg | 97.5 | 1.82T | ||
| 30G120 | 1.20w/kg | 98 | 1.82T | ||
| High Induction Type |
B20P085 | 35-1200mm | 0.85w/kg | 97 | 1.86T |
| B23P085 | 0.85w/kg | 97.2 | 1.88T | ||
| B23P090 | 0.90w/kg | 97.2 | 1.88T | ||
| B23P095 | 0.95w/kg | 97.2 | 1.88T | ||
| B23P100 | 1.00w/kg | 97.2 | 1.88T | ||
| B27P095 | 0.95w/kg | 97.5 | 1.89T | ||
| B27P100 | 1.00w/kg | 97.5 | 1.89T | ||
| B30P120 | 1.20w/kg | 98 | 1.89T | ||
| Domain Refined High Induction Type(Laser) |
B20R070 | 35-1200mm | 0.70w/kg | 97 | 1.86T |
| B23R085 | 0.85w/kg | 97.2 | 1.88T | ||
| B27RK085 | 0.85w/kg | 97.5 | 1.89T |
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
"The Core of the Iron Core, the Power of Leadership" - See Our Great Decision-Makers Deeply Engaged in the Magnetic Materials Industry.
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