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| Availability: | |
|---|---|
| Quantity: | |
Jirui
SIZE | Customized |
THCIKNESS | 0.23-0.35MM (CRGO) 0.35-0.5MM (CRNGO) |
MATERIAL | M3, M4, M5, M6 (CRGO) 35W250, 35W300, 35W400 (0.35MM) M330-35A 50W250, 50W310, 50W400, 50W470, B23R075-LM,B23R085-LM,B27R090-LM,B30P100-LM,B30P120-LM |
FREQUENCY | 50HZ-1000HZ |
COATING | T2 Inorganic ( CRGO ) T4 Semi-organic (CRNGO) |
PROCESS TECHNOLOGY | ANNEALLING & WITHOUT ANNEALLING |
APPLIANCE | CONTROL TRANSFORMER, AUTO TRANSFORMER, ISOLATION TRANSFORMER,POWER TRANSFORMER,BALLAST,REACTOR,INDUCTOR,INVERTER POWER,TOROIDAL TRANSFORMER ,VOLTAGE STABILIZERS.etc. |

Inner diameter (A): 20–300 mm
Outer diameter (B): 30–350 mm
Height (C): 10–120 mm
These cores deliver low core loss, high permeability, and excellent performance for power transformers, audio transformers, and inductors. Each toroidal core is manufactured to tight tolerances, ensuring consistent quality and reliable operation in your electrical systems.


With a 12,000㎡ production base, we operate 3 fully automatic and 10 semi-automatic annular winding machines. This setup enables large-scale toroidal core production without compromising quality, with a daily capacity of up to 50 tons and an average of 10 tons of precision-annealed cores produced daily.

At Jirui Electrical Appliance, our toroidal cores are manufactured through a rigorous, quality-controlled process. Starting with premium silicon steel raw material, we precision-slit the strip coil, stamp the laminations, and anneal them to optimize magnetic properties. Each core then undergoes strict quality inspection before packaging and shipping to customers worldwide.

- 20+ Years of Electrical Steel Expertise
- Technical Support Consultation
- Fast Sample Preparation: 3-5 Working Days
- Flexible MOQ with Competitive Pricing
Q1:Are you a Manufacturer?
A:Yes,we both Manufacturer and trading company,you will own high quality and competitive price.
Q2:What is your sample policy?
A:The sample is free,you only need to bear the freight .
Q3: Do you have the products in stock?
A:Yes,we will keep some general ones in stock.
Q4: What's the delivery time?
A:Sample order needs 5-7 days.Formal order needs 15-21 days. Specific delivery time depends on the order situation.
Q5: What's your payment terms?
A: We usually accept T/T at sight as the main payment terms,and other payment can also be negotiated.
Q6:What is your terms of delivery?
A: EXW,FOB, CIF From Ningbo Port.
Q7:Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
SIZE | Customized |
THCIKNESS | 0.23-0.35MM (CRGO) 0.35-0.5MM (CRNGO) |
MATERIAL | M3, M4, M5, M6 (CRGO) 35W250, 35W300, 35W400 (0.35MM) M330-35A 50W250, 50W310, 50W400, 50W470, B23R075-LM,B23R085-LM,B27R090-LM,B30P100-LM,B30P120-LM |
FREQUENCY | 50HZ-1000HZ |
COATING | T2 Inorganic ( CRGO ) T4 Semi-organic (CRNGO) |
PROCESS TECHNOLOGY | ANNEALLING & WITHOUT ANNEALLING |
APPLIANCE | CONTROL TRANSFORMER, AUTO TRANSFORMER, ISOLATION TRANSFORMER,POWER TRANSFORMER,BALLAST,REACTOR,INDUCTOR,INVERTER POWER,TOROIDAL TRANSFORMER ,VOLTAGE STABILIZERS.etc. |

Inner diameter (A): 20–300 mm
Outer diameter (B): 30–350 mm
Height (C): 10–120 mm
These cores deliver low core loss, high permeability, and excellent performance for power transformers, audio transformers, and inductors. Each toroidal core is manufactured to tight tolerances, ensuring consistent quality and reliable operation in your electrical systems.


With a 12,000㎡ production base, we operate 3 fully automatic and 10 semi-automatic annular winding machines. This setup enables large-scale toroidal core production without compromising quality, with a daily capacity of up to 50 tons and an average of 10 tons of precision-annealed cores produced daily.

At Jirui Electrical Appliance, our toroidal cores are manufactured through a rigorous, quality-controlled process. Starting with premium silicon steel raw material, we precision-slit the strip coil, stamp the laminations, and anneal them to optimize magnetic properties. Each core then undergoes strict quality inspection before packaging and shipping to customers worldwide.

- 20+ Years of Electrical Steel Expertise
- Technical Support Consultation
- Fast Sample Preparation: 3-5 Working Days
- Flexible MOQ with Competitive Pricing
Q1:Are you a Manufacturer?
A:Yes,we both Manufacturer and trading company,you will own high quality and competitive price.
Q2:What is your sample policy?
A:The sample is free,you only need to bear the freight .
Q3: Do you have the products in stock?
A:Yes,we will keep some general ones in stock.
Q4: What's the delivery time?
A:Sample order needs 5-7 days.Formal order needs 15-21 days. Specific delivery time depends on the order situation.
Q5: What's your payment terms?
A: We usually accept T/T at sight as the main payment terms,and other payment can also be negotiated.
Q6:What is your terms of delivery?
A: EXW,FOB, CIF From Ningbo Port.
Q7:Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.