27qg100 27HP100 Grain Oriented Silicon Electrical Steel Mother Coil From Baosteel
Sep 26, 2025
Leave a message
Grain Oriented Silicon Electrical Steel Mother Coil Product Description
A Grain Oriented Silicon Electrical Steel (CRGO) Mother Coil is a large, continuous coil of cold-rolled grain-oriented silicon steel that serves as the raw material for transformer cores and other high-efficiency electrical components.
This specialized steel has silicon (Si) added to iron (Fe) and is processed to align its crystalline structure, which significantly enhances its magnetic properties in a specific direction, minimizing energy losses in transformers and generators. The mother coil is subsequently cut into thin laminations to build transformer cores, enabling greater energy efficiency in power distribution systems.
Manufacturing Process
Cold Rolling and Annealing: The steel undergoes cold rolling and annealing to develop its unique crystalline structure and desired magnetic properties.
Grain Alignment: The rolling process is controlled to align the crystal grains, a technique pioneered by Norman P. Goss.
Insulation Coating: An insulating coating is applied to the steel.
Grain Oriented steel sheet rolls Applications
- Power Transformers:
The primary application, where the high magnetic permeability and low core losses contribute to significant energy savings.
- Generators:
Used in the cores of large, high-performance generators to improve the efficiency of converting mechanical energy to electrical energy.
- Other Electrical Equipment:
Utilized in applications such as rectifiers and reactors where efficient magnetic field handling is required.
Why Mother Coils Are Important
- Efficiency:
They provide the base material for creating energy-efficient cores by reducing energy losses from hysteresis and eddy currents.
- Cost Savings:
Minimizing energy loss through improved magnetic properties directly translates to lower operating costs in the long run.
- Improved Magnetic Properties:
The carefully aligned grains result in higher magnetic flux density in the direction of rolling.
Grain Oriented Silicon Electrical Steel Mother Coil specifications
GRADE we supply:B30P120, B30P105, B30R100, 27QG120, 27QG100, 23Q110, 23QG100, 23QG095, 23RK090, 23RK085, 23QG085, 23RK085, 23QG085, 23RK080, 23RK075, B23R070, 20QG085, 20RK080, 20RK075, B20R070, B20R065,M0H,M1H,M2,M3,M4,M5.
23HP75d, 23HP80d, 23HP85d, 23HP90d, 23HP95d, 23HP100, 23HP100d, 27HP100, 27HP110, 27CG110, 27CG120, 30CG120, 30CG130
27QG100 from WISCO,WISCO and Baosteel belong to Baowu group,27QG100 equals to 27ZH100.
| 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 | ||
| 27QG100 | 1.00w/kg | 97.5 | 1.89T | ||
| B30P120 | 1.20w/kg | 98 | 1.89T | ||
| Domain Refined High Induction Type(Laser) |
B20R070 | 900-1200mm | 0.70w/kg | 97 | 1.86T |
| B23RK085 | 0.85w/kg | 97.2 | 1.88T | ||
| 27QG100 | 1.0w/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