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Help CenterSGS Tested Grain Oriented Silicon Steel Coil 0.27mm 0.30mm Third Party Inspection Grade
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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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