CRGO Grain Oriented Steel Slit Coil for Assembled Core
Oct 11, 2025
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CRGO Grain Oriented Steel Slit Coil Product Description
CRGO Slit Coils, also known as Cold Rolled Grain Oriented Steel Slit Coils, are electrical steel products that are widely used in the manufacturing of transformers, inductors, and other power electronic devices. These coils are made by slitting cold-rolled grain-oriented steel sheets or mother coils into narrower strips, which are then wound into coils. The cold rolling process aligns the crystal grains in the steel, significantly improving the material's magnetic properties.
CRGO Coils offer high magnetic permeability, low core loss, and excellent insulation properties, making them ideal for applications that require high efficiency and low losses. These coils are available in mother form in various sizes (900mm to 1250mm), width shapes, and thicknesses (0.18mm to 0.35mm), allowing manufacturers to choose the right product for their specific needs.
We offer precision cutting services for magnetic core coils, providing various widths to meet customer needs. Our advanced CNC Slitting line with a carbide cutter ensures top-quality results with perfect accuracy. We guarantee that both edges of our slit coils will have a maximum 10-micron burr.
CRGO Grain Oriented Steel application
Various transformersFor example, distribution/power transformers used in power grids and traction transformers for high-speed railways. Using them to make iron cores can reduce electrical energy loss and ensure stable power supply.
Reactors/inductorsSuch as reactive power compensation reactors in substations and filter inductors in electronic equipment. They rely on CRGO Slit Coils to stabilize the magnetic field and avoid current fluctuations.
New energy equipmentThe core magnetic cores in photovoltaic inverters and energy storage converters also use them to improve the efficiency of electrical energy conversion.
Electrical steel specifications
Magnetic and Technical Characteristics of Common Grain Oriented Electrical Steel Belt (Sheet)
| Type | Grade | Nominal Thickness | Nominal Core Loss P1.7/50 (W/kg) | Actual Core Loss P1.7/50 (W/kg) | Magnetic Induction J800(T) | Min. Lamination Coefficient(%) |
| CGO | H23Q110 | 0.23 | 1.10 | 1.08 | 1.85 | 0.955 |
| H23Q120 | 1.20 | 1.15 | ||||
| H23Q130 | 1.30 | 1.20 | ||||
| H27Q110 | 0.27 | 1.10 | 1.08 | 0.960 | ||
| H27Q120 | 1.20 | 1.15 | ||||
| H27Q130 | 1.30 | 1.20 | ||||
| H30Q120 | 0.3 | 1.20 | 1.15 | 0.965 | ||
| H30Q130 | 1.30 | 1.20 | ||||
| H35Q135 | 0.35 | 1.35 | 1.20 | |||
| H35Q145 | 1.45 | 1.25 | ||||
| H35Q155 | 1.55 | 1.35 |
Magnetic Properties and Technical Characteristics of Domain Refinement CGO
| Type | Grade | Nominal Thickness | Nominal Core Loss P1.7/50 (W/kg) | Actual Core Loss P1.7/50 (W/kg) | Magnetic Induction J800(T) | Min. Lamination Coefficient(%) |
| Domain Refinement CGO | H23QK100 | 0.23 | 1.00 | 0.96 | 1.85 | 0.955 |
| H23QK110 | 1.10 | 1.08 | ||||
| H23QK120 | 1.20 | 1.15 | ||||
| H23QK130 | 1.30 | 1.20 | ||||
| H27QK100 | 0.27 | 1.00 | 0.96 | 0.960 | ||
| H27QK105 | 1.05 | 1.00 | ||||
| H27QK110 | 1.10 | 1.08 | ||||
| H27QK120 | 1.20 | 1.15 | ||||
| H27QK130 | 1.30 | 1.20 | ||||
| H30QK100 | 0.3 | 1.00 | 0.96 | 0.965 | ||
| H30QK105 | 1.05 | 1.00 | ||||
| H30QK110 | 1.10 | 1.08 | ||||
| H30QK120 | 1.20 | 1.15 | ||||
| H30QK130 | 1.30 | 1.20 | ||||
| H35QK135 | 0.35 | 1.35 | 1.20 | |||
| H35QK145 | 1.45 | 1.25 | ||||
| H35QK155 | 1.55 | 1.35 |
Magnetic Properties and Technical Characteristics of High Permeability Electrical Steel
| Type | Grade | Nominal Thickness | Nominal Core Loss P1.7/50 (W/kg) | Actual Core Loss P1.7/50 (W/kg) | Magnetic Induction J800(T) | Min. Lamination Coefficient(%) |
| HIB | H18G080 | 0.18 | 0.80 | 0.79 | 1.89 | 0.950 |
| H18G085 | 0.85 | 0.83 | 1.89 | |||
| H18G095 | 0.95 | 0.91 | 1.88 | |||
| H20G080 | 0.2 | 0.80 | 0.80 | 1.90 | ||
| H20G085 | 0.85 | 0.84 | 1.89 | |||
| H20G095 | 0.95 | 0.92 | 1.88 | |||
| H23G085 | 0.23 | 0.85 | 0.85 | 1.90 | 0.955 | |
| H23G090 | 0.90 | 0.88 | 1.89 | |||
| H23G095 | 0.95 | 0.92 | 1.89 | |||
| H23G100 | 1.00 | 0.96 | 1.88 | |||
| H27G090 | 0.27 | 0.90 | 0.89 | 1.90 | 0.960 | |
| H27G095 | 0.95 | 0.93 | 1.90 | |||
| H27G100 | 1.00 | 0.96 | 1.90 | |||
| H27G110 | 1.10 | 1.03 | 1.89 | |||
| H27G120 | 1.20 | 1.10 | 1.88 | |||
| H30G105 | 0.3 | 1.05 | 1.01 | 1.90 | 0.965 | |
| H30G110 | 1.10 | 1.03 | 1.89 | |||
| H30G120 | 1.20 | 1.10 | 1.88 | |||
| H35G115 | 0.35 | 1.15 | 1.12 | 1.89 | ||
| H35G125 | 1.25 | 1.15 | 1.88 | |||
| H35G135 | 1.35 | 1.20 | 1.88 |
Magnetic Properties and Technical Characteristics of Domain Refinement HiB
| Type | Grade | Nominal Thickness | Nominal Core Loss P1.7/50 (W/kg) | Actual Core Loss P1.7/50 (W/kg) | Magnetic Induction J800(T) | Min. Lamination Coefficient(%) |
| Domain Refinement HIB | H20GK070 | 0.2 | 0.70 | 0.69 | 1.89 | 0.950 |
| H20GK075 | 0.75 | 0.74 | 1.88 | |||
| H20GK080 | 0.80 | 0.78 | 1.88 | |||
| H20GK085 | 0.85 | 0.82 | 1.88 | |||
| H20GK090 | 0.90 | 0.88 | 1.88 | |||
| H20GK095 | 0.95 | 0.92 | 1.88 | |||
| H23GK080 | 0.23 | 0.80 | 0.79 | 1.88 | 0.955 | |
| H23GK085 | 0.85 | 0.82 | 1.88 | |||
| H23GK090 | 0.90 | 0.88 | 1.88 | |||
| H23GK095 | 0.95 | 0.92 | 1.88 | |||
| H23GK100 | 1.00 | 0.96 | 1.98 | |||
| H27GK085 | 0.27 | 0.85 | 0.84 | 1.89 | 0.960 | |
| H27GK090 | 0.90 | 0.87 | 1.89 | |||
| H27GK095 | 0.95 | 0.92 | 1.88 | |||
| H27GK100 | 1.00 | 0.96 | 1.88 | |||
| H27GK105 | 1.05 | 1.00 | 1.88 | |||
| H27GK110 | 1.10 | 1.03 | 1.88 | |||
| H27GK120 | 1.20 | 1.10 | 1.88 | |||
| H30GK095 | 0.3 | 0.95 | 0.92 | 1.89 | 0.965 | |
| H30GK100 | 1.00 | 0.96 | 1.88 | |||
| H30GK105 | 1.05 | 1.00 | 1.88 | |||
| H30GK110 | 1.10 | 1.03 | 1.88 | |||
| H30GK120 | 1.20 | 1.10 | 1.88 |
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