NLMK 3404 3408 Grain Oriented Silicon Steel Coil 0.30mm 0.35mm Transformer Core Grade
Product Spotlights
Grain-Oriented Electrical Steel – Low Core Loss for High-Efficiency Transformers
Our grain-oriented silicon steel (CRGO) is manufactured to ASTM A876, IEC 60404-8-7, JIS C2553, and GB/T 2521 standards. Available in grades from 23Q085 to 30Q130, M3/M4/M5, and Hi-B series. Thickness 0.18–0.35mm, width 600–1250mm, with slitting and cutting services.
The oriented grain structure aligns magnetic flux in the rolling direction, delivering ultra-low core loss and high magnetic induction (≥1.92T). This significantly reduces energy waste and heating in electromagnetic equipment.
Typical applications: power transformer cores, distribution transformers, reactor cores, current transformers, and magnetic shielding for electrical systems.
Each batch includes EN 10204 3.1 MTC. Third-party inspection (SGS/BV) accepted. MOQ 100 kg, sample orders welcome.
Key Specifications (Grain-Oriented Silicon Steel Coil)
Parameter |
Specification / Range |
Remarks |
Standards |
ASTM A876, IEC 60404-8-4, GB/T 2521 |
Others on request |
Grades |
23Q110, 27Q120, 30Q130, 35Q145 |
High-permeability available |
Thickness |
0.18 mm – 0.35 mm |
– |
Width |
600 mm – 1250 mm |
Slit edge available |
Core Loss P1.7 (50Hz) |
0.8 – 1.2 W/kg |
– |
Magnetic Induction B8 |
≥1.80 – 1.88 T |
– |
Coating |
C-5 (T1) / C-6 (T2) insulation coating |
– |
Density |
7.65 g/cm³ |
– |
Testing |
Epstein frame, tension, coating continuity |
Mill cert provided |
Packaging |
Rust-proof paper + steel strapping + wooden pallet |
Seaworthy, ISPM 15 |
Q1:Do you offer sample orders?
A:Yes, samples are available for quality evaluation. Sample cost is charged but refundable upon bulk order.
Q2:What is your MOQ?
A:Our standard MOQ is 100 kg per specification. For common grades and standard sizes, we accept small batch orders. Mixed orders for different products are also welcome.
Q3:Can you provide custom sizes?
A:Yes, we can produce any length, width, thickness, or diameter based on your drawings. Cutting, slitting, and other processing services are available with tolerance as required.
Q4:What certifications do you provide?
A:Each shipment comes with EN 10204 3.1 mill test certificate (MTC). Third-party inspection reports (SGS/BV/TÜV) can be arranged upon request.
Q5:What is your lead time?
A:7–15 working days for stock items. 20–30 days for custom orders, depending on quantity and specification.
Q6:What surface treatments are available?
A:Various surface treatments are available upon request, including pickled, polished, coated, oiled, or as required.
Q7:What payment terms do you accept?
A:T/T (30% deposit + 70% against BL copy), L/C at sight, Western Union, etc.
Q8:What about packaging for export?
A:Standard seaworthy packaging with waterproof protection, steel straps, corner protectors, and ISPM 15 fumigation certification. Custom packaging is available as required.
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