Explore our elite range of structural, carbon, and transformer core steel sheets manufactured to global engineering standards.
Electrical steel, often called silicon steel, is a soft magnetic alloy optimized to exhibit high permeability and low core loss. Designed to guide magnetic flux within transformers and motors, it stands as the critical pillar supporting the global transition to renewable energy and sustainable electric mobility.
Specially processed using the Goss texture method, GOES aligns its crystals along the rolling direction. This achieves maximum magnetic permeability and extremely low core loss in a single direction, making it the ideal core material for stationary power plants and transmission transformers.
NGOES exhibits isotropic magnetic properties, ensuring uniform permeability in all directions. It is vital for rotating machinery, such as EV traction motors and industrial generators, where the magnetic field direction changes continuously.
As operating frequencies rise in EV powertrains and high-frequency inductors, traditional laminations suffer severe eddy current losses. Reducing nominal thickness from 0.35 mm down to 0.20 mm or 0.15 mm curtails these losses exponentially. This requires advanced metallurgical processing to retain mechanical flatness, dimensional tolerances, and coating integrity during high-speed stamping.
Optimizing costs, guaranteeing anti-rust protection, and ensuring high-quality steel deliveries to international hubs.
Sea freight introduces high humidity and salt spray risks. Ningbo Puppet Steel implements strict protective protocols, including Volatile Corrosion Inhibitor (VCI) lining, heavy-gauge steel outer wrappers, and robust wooden skids to prevent oxidation and core edge deformation.
Navigating anti-dumping duties and localized tax structures requires experienced compliance. We provide complete documentation support (Mill Test Certificates to EN 10204 3.1, country of origin certs, and detailed shipping manifests) to ensure hassle-free customs clearance.
Our surface chemistry capabilities deliver standard insulation coatings (C-3, C-5, C-6). The inorganic C-5 coating guarantees high temperature stability during stress relief annealing, making it ideal for large power transformer cores.
| Typical Grades | Silicon Content (%) | Nominal Thickness (mm) | Max Core Loss at 50Hz (W/kg) | Main Industrial Application |
|---|---|---|---|---|
| 23QG085 (GOES) | ~3.2 - 3.5% | 0.23 mm | 0.85 (at 1.7 Tesla) | Ultra-High Voltage Power Transformers |
| 35AR300 (NGOES) | ~2.8 - 3.2% | 0.35 mm | 3.00 (at 1.5 Tesla) | High-Efficiency Industrial Pumps & Motors |
| 20WT1200 (Thin-NGOES) | ~3.0 - 3.4% | 0.20 mm | 1.20 (at 400Hz) | EV Traction Motors & Aerospace Generators |
No two energy systems are identical. High-performance grids rely on structural compatibility and customized slitting tolerances to build efficient cores. As a premier integrated steel processing center, we offer custom width slitting, precision length shearing, and custom laminations.
For high-frequency traction motors, hysteresis and eddy losses generate significant heat. Our ultra-thin cold-rolled NGOES sheets feature a high stacking factor, maximizing torque density and motor efficiency across a wide range of operating speeds.
By leveraging high-permeability, grain-oriented silicon steel (HiB), utility networks minimize continuous, no-load transformer losses, preventing significant energy waste during off-peak hours.
Where metallurgy meets nanotechnology: shaping the future of high-frequency power electronics.
Increasing silicon content to 6.5% reduces magnetostriction to near zero, eliminating acoustic hum in large inductors and drastically lowering core losses. We are actively researching rolling techniques to overcome the brittleness of this high-silicon alloy.
Our technical roadmap focuses on the commercial scaling of 0.10mm and 0.15mm silicon steel, enabling high-power density drivetrains for electric aircraft and high-speed rail systems.
By creating microscopic surface stresses with laser beams, we refine the magnetic domain structure of GOES, achieving core loss reductions of up to 10% without altering the chemical composition.
Ningbo Puppet Steel Co., Ltd. is a professional Steel Sheet Manufacturer | Cold Rolled, Hot Rolled & Galvanized Steel Supplier committed to providing high-quality steel products and customized metal solutions for customers worldwide. Serving industries such as construction, infrastructure, manufacturing, automotive, energy, home appliances, and industrial equipment, the company has built a strong reputation for reliable products and consistent service.
Located in Ningbo, China, Puppet Steel operates advanced processing and manufacturing facilities equipped with modern production lines and precision quality inspection systems. The company specializes in a comprehensive range of steel products, including cold rolled steel sheets, hot rolled steel sheets, galvanized steel sheets, galvalume steel sheets, prepainted steel sheets, carbon steel sheets, structural steel sheets, and customized steel processing solutions.
With extensive industry experience, the company offers flexible OEM and customized manufacturing services to meet various project requirements. From material selection and cutting to surface treatment and packaging, every production stage is carefully managed to ensure product consistency, dimensional accuracy, and long-term performance. Strict quality control procedures are implemented throughout the manufacturing process to comply with international standards and customer specifications.
Puppet Steel focuses on delivering durable, corrosion-resistant, and cost-effective steel products suitable for demanding applications in both domestic and international markets. The company maintains long-term partnerships with contractors, distributors, wholesalers, fabricators, and industrial manufacturers across North America, Europe, Southeast Asia, the Middle East, and other global regions.
Driven by innovation, quality, and customer satisfaction, Ningbo Puppet Steel Co., Ltd. continuously invests in technology upgrades and production efficiency improvements. Through competitive pricing, stable supply capacity, timely delivery, and professional technical support, the company strives to become a trusted global partner for steel sheet manufacturing and metal material solutions.
A visual tour of our production floor, showing advanced slitting, cold rolling, and quality inspection units.
Essential insights covering grades, optimization parameters, and global distribution logistics.
Explore our specialized construction-grade, structural, and prepainted corrosion-resistant steel options.
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