Premium Baosteel 0.85W/Kg Iron Loss Silicon Steel Lamination Transformer Sheet Core Supplier

• Customization: Available
• Type: Oriented Silicon Steel
• Standard: GB, AISI, ASTM, DIN, BS, JIS
• Model NO.: B23R085
• Technique: Cold Rolled
• Shape: Sheet
• Thickness: 0.23mm
• Iron Loss: 0.85W/Kg(1.7t/50Hz)
• Brand: Baosteel,Wisco
• Width: 35-1060mm
• Transformer Lamination: OEM(According to Drawing)
• Transport Package: Export Wood Box
• Specification: 1000*1000*600mm
• Trademark: Julong
• Origin: China
• HS Code: 85049019
• Production Capacity: 30000tons/Month

Product Description

Product Description

Our oriented silicon steel is a premium low-carbon silicon iron alloy with a silicon content ranging from 0.5% to 4.5%. Celebrated for its outstanding high permeability, this exceptional material significantly reduces Joule loss in power equipment, thereby enhancing efficiency and ensuring substantial energy savings. It also boasts remarkably lower iron loss and a superior resistance coefficient, making it the optimal choice for a diverse range of applications.


Raw Material: Our products are meticulously crafted from top-tier CRGO silicon steel, exclusively sourced from Baosteel and WISCO, ensuring unmatched quality and performance.

Type	Grade	Width	Max Core [email protected]/50Hz	Lamination Factor(%)	Min Induction@B800
Common Type	23Q110	35-1200mm	1.10w/kg	97.2	1.82T
	23Q120		1.20w/kg	97.2	1.82T
	27Q120		1.20w/kg	97.5	1.82T
	30G120		1.20w/kg	98	1.82T
High Induction Type	B20P085	35-1200mm	0.85w/kg	97	1.86T
	B23P085		0.85w/kg	97.2	1.88T
	B23P090		0.90w/kg	97.2	1.88T
	B23P095		0.95w/kg	97.2	1.88T
	B23P100		1.00w/kg	97.2	1.88T
	B27P095		0.95w/kg	97.5	1.89T
	B27P100		1.00w/kg	97.5	1.89T
	B30P120		1.20w/kg	98	1.89T
Domain Refined High Induction Type(Laser)	B20R070	35-1200mm	0.70w/kg	97	1.86T
	B23R085		0.85w/kg	97.2	1.88T
	B27RK085		0.85w/kg	97.5	1.89T

 

High-Quality & Fully Assembled Cores

• Maximum Weight of Automatically Stacked Core: An impressive 60 Tons
• Maximum Weight of Manually Stacked Core: A robust 120 Tons
• Gap Limit at the Joint: Precision engineering ensures a gap limit of less than 1mm
• Window Height Precision: Exacting standards yield a precision of ±1mm
• Window Width Precision: Unmatched precision with a tolerance of ±1mm

We meticulously calculate each project based on your detailed drawings. If the parameters align within our acceptable range, we provide an updated quotation. Upon your confirmation, we advance to manufacture with precise adherence to your specifications.

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FAQ

1.Which products can we provide?
We offer a range of products including CRGO mother coils, slit coils, transformer laminations, and OEM transformer cores.

2. Who are we?
We are the pioneers of CRGO silicon steel products in China since 1988. As the exclusive user of Bao-steel and in collaboration with Baosteel, we have established a joint laboratory to ensure the highest quality standards.

3.How can we guarantee quality?
We adhere to the ISO9001:2015 Standard. Our engineers conduct meticulous calculations before production, and each product undergoes rigorous testing before dispatch to guarantee quality.

4. Why should you choose us over other suppliers?
With over 30 years of expertise in producing transformer cores, we leverage advanced German slitted cutting systems and the Georg 800 cross-cutting E-stack machine. Our annual production capacity exceeds 100,000 tons, ensuring reliability and quality.

 

Purchasing a good-quality transformer core is critical because it directly affects no-load loss, efficiency, noise, temperature rise, and service life. Below is a practical, industry-oriented guide you can use when sourcing cores from any supplier.

 

1. Define Your Technical Requirements First

Before contacting suppliers, be very clear about:

(a) Electrical parameters

• Transformer type: distribution / power / dry-type / amorphous

• Rating (kVA / MVA)

• Frequency: 50 Hz or 60 Hz

• Voltage class

• Target no-load loss (W) and exciting current (%)

• Noise limits (especially for distribution transformers)

(b) Core structure

• Core type: 3-leg, 5-leg, shell type

• Joint type: step-lap (preferred) or mitred

• Stacking factor requirement (≥ 0.97 for GO steel)

• Lamination thickness:

  • GO silicon steel: 0.23 / 0.27 / 0.30 mm

  • Amorphous: ~0.025 mm

 

2. Select the Right Core Material

(a) Grain-Oriented Silicon Steel (GOES)

Key points:

• Use Hi-B or Laser-scribed Hi-B

• Check steel brand and grade:

  • Examples: 23ZH90, 23ZH100, 27Q120, 30Q130

• Request original mill test certificate (MTC)

Important parameters to verify:

• Core loss (W/kg) @ 1.7 T

• Magnetic induction (B800 or B1000)

• Aging factor

• Coating type (C-5 / C-6)

(b) Amorphous Alloy (for ultra-low loss)

• Confirm alloy brand and ribbon source

• Check annealing process and brittleness control

• Ensure supplier has experience in amorphous cut-core handling

 

3. Evaluate the Core Manufacturer (Very Important)

A good core is not only about steel-it's about processing capability.

Ask about:

• Core cutting line (Georg, Föppl, or equivalent)

• Automatic step-lap cutting & stacking

• Annealing furnace (temperature control & atmosphere)

• Quality inspection equipment

Factory quality system:

• ISO 9001 mandatory

• ISO 14001 / ISO 45001 preferred

• Experience with utility / EPC / export projects

 

4. Key Quality Checks Before Purchase

Request the following before mass order:

(a) Prototype or sample core test

Ask for:

• No-load loss (W)

• Exciting current (%)

• Noise level (dB)

• Core weight & dimensions

(b) Documentation

• Steel MTC from original mill

• Core loss test report

• Dimensional drawing

• Packing & rust-prevention method

(c) Joint & stacking inspection

• Step-lap consistency

• No burrs on lamination edges

• Uniform pressure on yokes

• Proper insulation coating (no peeling)

 

5. Packaging & Logistics (Often Overlooked)

Poor packing can destroy a good core.

Ensure:

• Anti-rust protection (VCI paper / oil film)

• Strong wooden crate with shock protection

• No lamination displacement during transport

• Moisture protection for sea shipment

 

6. Supplier Qualification Checklist (Quick Use)

Uses branded GO steel (not mixed grades)
Provides mill certificates
Has step-lap cutting lines
Offers loss guarantee (contractual)
Supports FAT / third-party inspection
Has stable export experience

 

7. Recommended Purchasing Process

1. Shortlist 2-3 qualified core manufacturers

2. Compare technical proposal, not only price

3. Request sample core or reference projects

4. Place trial order

5. Approve supplier for long-term cooperation

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