Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod
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Product Highlights
- High Voltage Resistance: Supports maximum voltage range from 20KV to 100KV for reliable performance.
- Superior Mechanical Strength: 3721 grade offers higher mechanical strength compared to 3723 and 3725 grades.
- Heat Resistant Grade E: Features heat-resisting grade E suitable for high-temperature electrical environments.
- ISO9001 Certified: Manufactured under ISO9001 certification ensuring consistent quality standards.
- Versatile Applications: Ideal for electrical maintenance, high voltage testing, and transformer insulation.
- Low Water Absorption: Water absorption rate is strictly controlled at 1.0% or less for durability.
- Smooth Surface Finish: Guaranteed smooth surface with no air bubbles, oil stains, or impurities.
- Fast Lead Time: Peak and off-peak season lead times are both within 15 working days.
Product Attributes
- Customization
- Available
- Application
- Electrical Maintenance, High Voltage Testing, Home Appliance Repair, Power Construction
- Color
- Brown
- Model NO.
- 3723
- Diameter
- 15-200mm
- Material
- Resin
- Maximum Voltage
- 20KV~100KV
- Thermal Rating
- H 180
- Type
- Insulation Sheet
- Chemistry
- Organic Insulation
- Classification
- Organic Insulating Material
- Certification
- ISO9001
- Brand
- Rainyan
- Transport Package
- Pallet
- Specification
- 0.5mm-200mm
- Trademark
- rainyan
- Origin
- China
- Production Capacity
- 100000kg/Day
- Package Size
- 100.00cm * 60.00cm * 30.00cm
- Package Gross Weight
- 50.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod
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Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod -
Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod -
Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod -
Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod -
Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod -
Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod -
Wholesale Insulating Material Epoxy Electric 3725 Bakelite Bar Cotton Phenoilc Laminated Rod
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Product Description
3721 phenolic cotton cloth laminated rod
The products are made of cotton which dipped into the phenolic aldehyde resin then heat pressed by mould.With high mechanical properties and processing properties.heat-resisting grade is E. It is Suitable for electrical equipment of insulation structure parts and transformer.
According to the properties ,they can be divided into three kinds:
3721,3723,3725,3721 is better than 3723< in> mechanical strength; 3723is an economical product versus 3721 ,3725 Similar to NEMA grade LE.
2,Technic Requirement
1. Guise:smooth,no air bubble,no oil stain& impurity,allow have inequality color, scrap,a little not level which does not interferethe usage;Diameter exceed 25mm,allow have crack which does not interferethe usage
2,Size:
3. Warp
4,After machining it should be without interlayer and lose.
5,Physical,Mechanical and Dielectric performance
The products are made of cotton which dipped into the phenolic aldehyde resin then heat pressed by mould.With high mechanical properties and processing properties.heat-resisting grade is E. It is Suitable for electrical equipment of insulation structure parts and transformer.
According to the properties ,they can be divided into three kinds:
3721,3723,3725,3721 is better than 3723< in> mechanical strength; 3723is an economical product versus 3721 ,3725 Similar to NEMA grade LE.
2,Technic Requirement
1. Guise:smooth,no air bubble,no oil stain& impurity,allow have inequality color, scrap,a little not level which does not interferethe usage;Diameter exceed 25mm,allow have crack which does not interferethe usage
2,Size:
| Dia | Tolerance | Dia | Tolerance |
| 6~12 | ±0.5 | >28~45 | ±1.5 |
| >12~16 | ±0.7 | >45~65 | ±2.0 |
| >16~28 | ±1.0 | >65~200 | ±2.3 |
3. Warp
| Dia(mm) | warp(%) |
| 6 >6~19 >19 |
≤2.0 ≤1.0 ≤0.5 |
5,Physical,Mechanical and Dielectric performance
| Properties | Unit | Grade | |||
| Phenolic Cotton Cloth Molded Rod | |||||
| 3721 | 3723 | 3725 | |||
| Flexural strength | >= | MPa | 118 | 88 | 83 |
| Tensile strength | >= | MPa | 78 | - | - |
| Compressive strength (Axial) |
>= | MPa | - | - | 138 |
| Breakdown voltage Parallel to laminations (in transformer oil) |
>= | kV | 10 (20±<5°C>) |
- | 10 (20<5°C>) |
| Insulation resistance parallel to lamination A: Under normal conditions D-24/23:Immersion in water |
≥ | W | 1.0×108 - |
- - | - - |
| Density | g/cm3 | (1.25-1.40) | |||
| Water absorption rate (D-24/23, Φ25mm) |
<= | % | 1.0 | 1.0 | 1.0 |
| Flammability | Class | - | - | - | |
| Color | - | Natural | |||
| Reference standard | - | Q/TXXFR004-2009 | |||
Xuchang Ruiyuan insulation material co.,ltd insist on the
idea " GOOD QULAITY, GOOD SERVICE ". it is establish 20years old.
It is located in Xuchang City, Henan Province, China. From 2010 year old our company begin deal international trade, based on the original business. Till now we import and export to many contries, such as United Kingdom, Germany, France, Ukrain, Bulgaria, Italy, India, Pakistan, Bangladesh, Korea, Brzil and so on.
Our manufacturing technique is leading in this field and well known in the world. Now there are more than 20 product facilities, and 105 staff, including 5 senior technical, 20 intermediate technical. Main products are manufactured on international standard.
Our products mainly used for transformer and electrical motor, we produces insulation paper, insulation board, insulation tape,insulation film and also sales PTFE FR4 PA6 and cable wire.
We will develop with you by best-quality products, warm-hearted service and mutually beneficial cooperation!
About the Supplier
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Company Profile
Xuchang Ruiyuan insulation material Co., Ltd insist on the idea " GOOD QULAITY, GOOD SERVICE ".
It is establish 20 years old.
We located in Xuchang City, Henan Province, China. From 2010 year old our company begin deal international trade, based on the original business. Till now we import and export to many contries, such as United Kingdom, Germany, France, Ukrain, Bulgaria, Italy, India, Pakistan, Bangladesh, Korea, Brzil and so on.
Our manufacturing technique is leading in this field and well known in the world. Now there are more than 20 product facilities, and 105 staff, including 5 senior technical, 20 intermediate technical. Main products are manufactured on international standard.
Our products mainly used for transformer and electrical motor, we produces composite insulation paper, electrical insulation board, teixble insulation tape and adhesive fiberglass tape, insulation film and also sales PTFE FR4 PA6 and cable wire.
We will develop with you by best-quality products, warm-hearted service and mutually beneficial cooperation!
About Our Factory & Business Background
- Address
- Yan'an Road Xuchang City Henan Province China, Xuchang, Henan, China
- Terms of Payment
- LC, PayPal, Western Union, Money Gram
- International Commercial Terms(Incoterms)
- FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, FCA
- Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays - Nearest Port
- qingdao, shanghai, tianjin
Our Production Capability & Technical Expertise
- Main Products
- Poyester Film, Poyimide Tape, Pressboard, Presspan, Insulation Paper, Insulation Material, Shrink Tube, PVC Tape, Adhesive Tape, Laminated Sheet
Our Industry Experience & Global Business Record
- Export Year
- 2001-02-01
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What is the maximum voltage rating?
- The product supports a maximum voltage range of 20KV to 100KV.
- What are the available diameter sizes?
- Diameter ranges from 15mm to 200mm with specific tolerances based on size.
- What is the heat resistance grade?
- The thermal rating is Grade E, suitable for high-temperature applications.
- Is the product ISO certified?
- Yes, the product holds ISO9001 certification for quality assurance.
- What is the lead time for orders?
- Lead time is within 15 working days for both peak and off-peak seasons.
- What are the main applications?
- Suitable for electrical maintenance, high voltage testing, home appliance repair, and power construction.
- What is the water absorption rate?
- The water absorption rate is 1.0% or less under standard conditions.
- What payment methods are accepted?
- We accept LC, PayPal, Western Union, and Money Gram.
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