Baosteel 20-65 Grade Cold Rolled Grain Oriented Electrical Steel Coil
Sep 28, 2025
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Cold Rolled Grain Oriented Electrical Steel Coil Product Description
A Cold Rolled Grain Oriented (CRGO) Electrical Steel Coil is a high-performance silicon steel used for transformer cores and other electrical devices, manufactured with a grain-oriented crystal structure to improve magnetic properties in a specific direction.
This specialized processing enhances magnetic permeability and reduces core losses, leading to greater energy efficiency and smaller, more powerful electrical components. CRGO coils are provided as raw material that is then cut into laminations to construct these components.
Comparison: Oriented vs. Non-Oriented Silicon Steel
- Oriented Silicon Steel: Optimized for minimal iron loss and high magnetic permeability in the rolling direction. Requires tight control of oxide inclusions and inhibitors like MnS and AlN.
- Non-Oriented Silicon Steel: Random grain orientation, used mainly for motor and generator manufacturing, has a silicon content between 1.5%–3.0%.
CRGO Electrical Steel Key Characteristics:
1.Grain Orientation:
The manufacturing process aligns the steel's crystal grains to create high magnetic permeability and minimize energy losses in the direction of rolling.
2.Material Composition:
CRGO steel is primarily a silicon-iron alloy with very low levels of other elements, such as carbon and phosphorus.
3.High Permeability:
This allows the material to be easily magnetized and to capture magnetic flux, which is critical for high-efficiency operation.
4.Low Core Losses:
The grain-oriented structure significantly reduces hysteresis and eddy current losses, minimizing energy dissipation as heat.
5.High Electrical Resistivity:
This property is crucial for minimizing eddy current losses.
6.Thickness and Width:
CRGO coils come in various thicknesses (e.g., 0.18 mm to 0.35 mm) and widths, specified to meet customer requirements.
CRGO Electrical Silicon Steel Applications:
Transformers:
CRGO steel is the primary material for the magnetic cores of power and distribution transformers due to its high efficiency and energy-saving capabilities.
Electric Motors:
It is used in both AC and DC motors to create strong magnetic fields and improve efficiency.
Generators:
The material enhances the magnetic circuit of generators, leading to more efficient electricity production.
Inductors and Reactors:
High-frequency applications like switch-mode power supplies and other power electronics benefit from the low core losses of CRGO steel.
Railway Traction Systems:
Used in electric locomotives and other rail systems for efficient conversion of electrical power to motion.
Electrical Silicon Steel specifications
| Type | Grade | Width | Max Core Loss@P1.7T/50Hz | Lamination Factor(%) | Min Induction@B800 |
| Common Type | 23Q110 | 900-1200mm | 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 | 900-1200mm | 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) |
B20R065 | 900-1200mm | 0.65w/kg | 97 | 1.86T |
| B23RK085 | 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.
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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.
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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;
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Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
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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
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CEO
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Industries Served
Automobile Industry
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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