27QH120 Grain-Oriented Electrical Steel — 0.27 mm, 1.20 W/kg
27QH120: what it is and where it belongs
27QH120 is equivalent to the long-established GB 27Q120 designation and is the grade most Chinese buyers already know by name. At 1.20 W/kg it serves general distribution transformers and price-first tenders where familiarity and availability matter as much as performance.
Typical applications
General distribution transformers
Price-first tenders
Volume orders under annual framework supply
Export units for markets with modest thresholds
Selection and processing notes
Buyer recognition is high, which shortens technical clarification.
Semi-process sources exist at this tier: require MTC with measured loss for every lot.
Supply form and documentation
Supplied as master coil 900–1250 mm wide (508 mm ID, 2–5 t per coil), slit strip from approximately 100 mm at ±0.5 mm width tolerance, or cut-to-length sheets to your lamination size. Standard insulation coating is C5, with C6 heat-resistant and chrome-free options. Every shipment carries an MTC to EN 10204 3.1 stating grade, heat number, measured core loss and flux density, plus packing list and — for export — certificate of origin and a standard cross-reference sheet against IEC 60404-8-7, ASTM A876, EN 10107 and JIS C 2553.
Equivalent designations
Nearest mill equivalent: GB 27Q120. Buyers specifying to IEC or ASTM may treat this grade as the 0.27 mm, 1.20 W/kg tier; the equivalence sheet is supplied with the quotation so the substitution can be written into the purchase order without ambiguity.
