Transformers & power
Core steel, winding conductors and hardware for power, distribution and instrument transformers, reactors and voltage regulators — exported directly from China to India and other overseas markets.
Low-loss cores, conductive windings
A transformer core is stacked or wound from thin electrical steel, and its losses run for the whole service life of the unit. That is why core material is usually bought to a guaranteed maximum core loss and minimum induction, not just to a thickness.
Grain-oriented (GO) steel is used because its magnetic properties are best along the rolling direction — the path the flux takes in a transformer limb. Windings, leads and busbars are made from copper or aluminum, and clamps, frames and tanks add structural steel and hardware.
- Core steelGO coil to grade, thickness and loss class.
- ConductorsCopper or aluminum for windings and leads.
- Structure & hardwareClamps, frames, fasteners and fittings.
Industry focus, wording and typical materials — client to confirm.
Materials typically specified for transformers & power
Each card links to the matching product family. Grades, sizes and terms are agreed per enquiry.
01CRGO / GOGrain-oriented electrical steel
Typical useStacked or wound cores of power and distribution transformers, reactors and voltage regulators.
Buyers specify
- Grade
- Thickness mm
- Max core loss W/kg
- Min B8 T
- Coating
- Width × ID mm
02Non-ferrousCopper
Typical useWinding conductors, leads, connections and busbars.
Buyers specify
- Form
- Grade / temper
- Dimensions mm
- Conductivity
- Packaging
03Non-ferrousAluminum
Typical useFoil and strip windings and conductors where aluminum is specified.
Buyers specify
- Alloy / temper
- Form
- Dimensions mm
- Surface
- Packaging
04CRNGO / NGONon-grain-oriented electrical steel
Typical useSmall transformers, ballasts and reactors where the flux direction changes.
Buyers specify
- Grade
- Thickness mm
- Max core loss W/kg
- Polarization T
- Coating
05ComponentsMetal products & hardware
Typical useCore clamps, frames, fasteners and fittings for assembly.
Buyers specify
- Product type
- Size
- Material / grade
- Finish
- Packaging
Where these materials are used
Application fields as listed in the Baosteel GO reference manual.
- 01
Power transformers
Large units for generation and transmission substations.
GO · Copper - 02
Distribution transformers
Pole-mounted and pad-mounted units in distribution networks.
GO · Copper · Aluminum - 03
Reactors
Shunt and series reactors for voltage and current control.
GO · Copper - 04
Voltage regulators
Regulating transformers and step-voltage regulators.
GO · Copper - 05
Instrument transformers
Current and voltage transformers for metering and protection.
GO · Copper - 06
Large motors
Listed in the reference manual as a GO application field.
GO
Grain-oriented grades for transformer cores
Grade structure as published in a manufacturer manual. Shown to illustrate how GO steel is specified — not a stock list and not 1 Quantum test data.
| Grade | Type | Thickness mm | Max P1.7/50 W/kg | Min B8 T |
|---|---|---|---|---|
| B23G110 | Conventional | 0.23 | 1.10 | 1.80 |
| B27G120 | Conventional | 0.27 | 1.20 | 1.80 |
| B30G120 | Conventional | 0.30 | 1.20 | 1.80 |
| B30G130 | Conventional | 0.30 | 1.30 | 1.80 |
| B35G135 | Conventional | 0.35 | 1.35 | 1.80 |
| B23P090 | High induction | 0.23 | 0.90 | 1.87 |
| B27P095 | High induction | 0.27 | 0.95 | 1.88 |
| B30P105 | High induction | 0.30 | 1.05 | 1.88 |
| B35P125 | High induction | 0.35 | 1.25 | 1.88 |
| B23R080 | Domain-refined | 0.23 | 0.80 | 1.87 |
| B27R090 | Domain-refined | 0.27 | 0.90 | 1.87 |
Test basis: GB/T 3655-2008 (G, P) · GB/T 13789-2008 (R). Density 7.65 kg/dm³.
Standard dimensions reference
- Thickness
- 0.23 · 0.27 · 0.30 · 0.35 mm
- Width
- 900–1200 mm
- Inside diameter
- 508 mm
Grade types
- GConventional
- PHigh induction
- RDomain-refined high induction
Application descriptions are general. Photos are illustrative and do not show client facilities or customers.
Buyers in this industry often ask…
Short, honest answers. Anything that depends on policy — MOQ, Incoterms, payment, lead time — is confirmed per enquiry.
01Can you supply CRGO to a specific grade or core-loss value?
Yes, send the grade or the maximum core loss and minimum induction you need, with thickness and width. Each request is reviewed against available supply. The grades shown on this page are reference data from a manufacturer manual, not a stock list.
02Is slit-to-width material available?
Slit widths and the delivery form are confirmed per enquiry. Please state the strip width, coil ID and maximum coil weight your line can handle.
03Which documents come with a shipment?
Mill test certificates and inspection documents are available on request where supplied by the manufacturer. State any document you need in the RFQ.
04Can I request core steel and winding material together?
Yes. You can list several materials in one request — for example GO coil, copper strip and aluminum foil. Each item is quoted to its own specification.
05What do you need to quote delivery to India?
Destination port or city, quantity per item and the required delivery date. Incoterms and lead time are confirmed per enquiry.
Commercial information and downloads
Commercial terms are quoted per enquiry. Documents are published once supplied and approved.
Commercial information
- Minimum order quantity
- On request
- Incoterms
- On request
- Lead time
- On request
- Payment terms
- On request
- Export markets
- India & other overseas markets
Documents
All technical resourcesMill test certificate (per shipment)
Available on request where supplied by the manufacturer.
Related products & resources
Need core steel or winding material?
Send the materials, grades or designations, dimensions, quantities and destination. Your industry is pre-filled in the request form.