Epoxy Fiberglass Laminated Sheets G10 Epoxy Glass Fiber Board
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Product Highlights
- Flame Retardant FR4 Grade: Meets UL94-V0 rating with excellent chemical and electrical resistance.
- High Mechanical Strength: Superior flexural and impact strength suitable for industrial equipment.
- Customization Available: Offers full customization, minor customization, and flexible options from samples or designs.
- ISO9001 Certified Quality: Strict quality control throughout design, production, and inspection processes.
- Low Water Absorption: Non-permeable to water and liquids with absorption rate of 0.07-0.16%.
- High Dielectric Strength: Electric strength up to 14 Kv/mm in oil, ensuring reliable insulation.
- OEM and ODM Services: Provides OEM and ODM services with 2 R&D engineers for product development.
Product Attributes
- Customization
- Available
- Application
- Industrial Equipment, Fiberglass
- Color
- Green
- Model NO.
- KLY-BXB
- Material
- Glass
- Maximum Voltage
- 20KV~100KV
- Thermal Rating
- B 130
- Sample
- Available
- Type
- Insulation Sheet
- Chemistry
- Hybrid Insulation
- Classification
- Hybrid Insulation Materials
- Certification
- ISO9001
- Transport Package
- Wooden Case
- Specification
- Thickness: 0.3-200mm
- Trademark
- Kang Liyuan
- Origin
- China Mainland
- Production Capacity
- 1000tons/Year
Product Images of Epoxy Fiberglass Laminated Sheets G10 Epoxy Glass Fiber Board
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Product Description
Introduction:
FR4 is a fire rated electrical-grade, dielectric fiberglass laminate epoxy resin system combined with a glass fabric substrate.The abbreviation "FR4" means: F (for flame) and R (for retardant).
FR4 grades material offer excellent chemical resistance, flame ratings (UL94-VO) and electrical properties under dry and humid conditions. FR4 also features high flexural, impact, superior mechanical strength and bond strength at temperatures up to 130°C.
G10 material is a composite material made of glass cloth and epoxy resin. It was developed as an aircraft material when it was invented, it can withstand great strength. G-10 is not permeable with water and liquid, and it has the characteristics of insulation, anti-acid and alkali, and the weight is light.
A continuous woven glass fabric laminated with an epoxy resin. This grade is extremely high in mechanical strength, has low water absorption and dissipation factors and has superior electrical characteristics, which are exhibited over a wide range of temperatures and humidities.
Technical Data:
| SHENGRUI GRADE | E3502 | ||||
| IEC893/EN60893 GRADE | EPGC202 | ||||
| ANSI(NEMA) GRADE NEMA LI-1 | FR-4 | ||||
| DIN7735 | Hgw2372.1 | ||||
| General Information | Test Method | Unit | Typical Values | ||
| Physical Properties |
Color | - | - | Greenish White/Yellow | |
| Specific Gravity | - | G/Cm3 | 1.95-2.0 | ||
| Water Absorption | E-24/50+D-24/23 | % | 0.07-0.16 | ||
| Electrical Properties |
Electric Strength⊥ | C-96/20/65(In90ºC Oil) | Kv/Mm | ≥14 | |
| Electric Strength// | C-0.5/90(In90ºC Oil) | KV | 40 | ||
| Volume Resistivity | C-96/20/65 | Ω | 5×1011-1013 | ||
| C-96/20/65 +C-96/40/90 | 5×1010-1012 | ||||
| Surface Resistivity | C-96/20/65 | Ω | 5×1010-1012 | ||
| C-96/20/65 +C-96/40/90 | 5×1010-1011 | ||||
| Dielectric Strength | C-96/20/65 | Ω.Cm | 5×1011-1012 | ||
| C-96/20/65 +D-2/100 | 5×108-109 | ||||
| Dielectric Constant 1MHZ | C-96-20-65 | --- | 4.0-5.0 | ||
| C-96/20/65 +D-48/50 | 4.5-5.5 | ||||
| Dissipation Factor 1MHZ | C-96/20/65 | --- | 0.03-0.04 | ||
| C-96/20/65 +D-48/50 | 0.04-0.05 | ||||
| Arc Resistance(HV) | C-96/20/65 | Sec | 130-140 | ||
| Mechanical Properties | Flexural Strength | A | Kg/Mm2 | 40-50 | |
| Impact Strength// | A | KJ/M2 | 33 | ||
| Rockwell Hardness | A | M | 110 | ||
| Bond Strength// | A | N | 8000 | ||
| Compressive Strength |
⊥ | A | Kg/Mm2 | 29-34 | |
| // | 19-24 | ||||
| Flame Resistance Properties |
Ul94 Subjects | A | --- | VO | |
| Heat Resistance (120min) | A | ºC | 220(OK) | ||
| Temperature Index | --- | 160 | |||
| Smoke Density90" | ASTM-E662 | - | 1 | ||
| Smoke Density4' | 3 | ||||
| Toxicant Content | - | Low | |||
| Others | Acetone Resistance | Boiled | Min | 30(OK) | |
| Punch Ability(≤3mm) | A | ºC | Good | ||
| Nominal | Nominal | Nominal | |||
| thickness(mm) | Tolerance | thickness(mm) | Tolerance | thickness(mm) | Tolerance |
| 0.1 | ±0.018 | 1.2 | ±0.13 | 10 | ±0.72 |
| 0.15 | ±0.025 | 1.5 | ±0.13 | 12 | ±0.82 |
| 0.2 | ±0.038 | 1.6 | ±0.15 | 14 | ±0.94 |
| 0.25 | ±0.038 | 2 | ±0.18 | 16 | ±1.02 |
| 0.3 | ±0.050 | 2.5 | ±0.20 | 20 | ±1.12 |
| 0.4 | ±0.050 | 3 | ±0.28 | 25 | ±1.30 |
| 0.5 | ±0.064 | 4 | ±0.33 | 30 | ±1.50 |
| 0.6 | ±0.064 | 5 | ±0.37 | 35 | ±1.70 |
| 0.8 | ±0.100 | 6 | ±0.45 | 40 | ±1.95 |
| 1 | ±0.100 | 8 | ±0.52 | 45 | ±2.20 |
| Remarks | 1: Nominal thickness not listed in the table, the tolerance should be as same as the next greater thickness. | ||||
| 2: More than 90% area of the thickness of tolerance must be within the thickness tolerance. |
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Product quality: With consistent quality control throughout the entire process of product design and development, material procurement, production, quality inspection, and sales, the company has passed strict quality system certification and has been widely recognized by well-known customers. The company's products have advantages in quality.

We take customer satisfaction as our goal, trying our best to be more professional. In line with the principle of "putting customers first and pursuing continuous improvement" ,we will keep innovating and never stop on our way to become a new material supplier of transformer industry at home and abroad.
Customer visit

Q: How you make sure the quality?
a. We will consult on your requirements, and recommend suitable products to you.
b. Before production, we will send samples to you
c. During production, we will always check quality, package, delivery etc.
d. Before package, with QA to check everything
e. After shipment, we will consult with you about satisfaction.
Q: How to make sure the delivery date?
a. Before production, we will see we can meet your time or not.
b. After your payment, we start our preparing material immediately.
c. During production, We will inform you of the production scheduled.
d. Before shipment, we will inform you to pay the balance on time and booking immediately.

About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR246721". Items marked "" are certified.
Company Profile
Kang Liyuan Science & Technology (Tianjin) Co., Ltd, listed in Tianjin stock market in 2017(stock code: 212039), is a high-tech insulation material enterprise in China. Its predecessor Tianjin Kang LiyuanElectrical Materials Manufacturing Co., Ltd. Was one of the insulation materialprocessing enterprises in North China.
We produce insulation materials for oil-immersed transformers, dry type transformers with professional production machines and manufacturing technique. Our main products are insulation materials and insulation components for oil-immersed transformers from 10KV-220KV.
Our products are widely used in oil immersed transformers, dry type transformers, motors, explosion-proof appliances, as well as complete sets of equipment, high & low voltage electrical appliances and otherelectrical control fields.
The company is a professional manufacturer and an excellent supplierof the amorphous alloy transformer insulation accessories. The frameworks produced have been widely used in SH15 series amorphous alloy transformers. We have a number of production lines for Diamond-dotted papers, Pre-impregnated papers, Crepe papers and Crepe paper tubes. The pre-impregnated papers and struts we produced are used in the domestic transformer industry to the anti-short circuit and high overload distribution transformers. We have become the production base of Japanese MIKI crepe paper tubes in the north and northeast area of China.
Our products all meet the national standard, IEC standard and ISO standard. We have more than 20 national inventions and utility model patents, and the reliable quality of our products and our superb service has received warm praise from our customers!
Our company has won plenty of awards like "Tianjin Quality Trustworthy Team", "Tianjin Excellent Quality Management Group", "Advanced Enterprise of Tianjin Promoting General Quality Management Team Activities", "National Science And Technology Small And Medium-sized Enterprise", "2016 National Excellent Quality Management Unit", "2017 National Excellent QC Group", "National Hi-tech Enterprise"and we are determined to become better.
We take customer satisfaction as our goal, trying our best to be more professional. In line with the principle of "putting customers first and pursuing continuous improvement", we will keep innovating and never stop on our way to become a new material supplier of transformer industry at home and abroad.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Beichen District, Tianjin, China
-
Plant Area
- 2300 square meters
-
Number of Employees
- 30
-
Registered Capital
- 30,000,000 RMB
-
Terms of Payment
- LC, T/T, PayPal, D/P, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Tianjin port
-
Minimum Order Quantity
- 1 pcs
-
Supply Chain Partners
- 20
Our Production Capability & Technical Expertise
-
Main Products
- Electrical Laminated Wood, Electrical Pressboard, End Ring, Round Rods, Crepe Paper Tube, Oil Duct Strip, Fibre Glass Tube, Crepepaper Rolling Machine, Phenolic Screw and Nuts, Dimond Dotted Paper
-
Production Lines
- 8
-
Production Machines
- NC cutting machine
-
QA/QC inspectors
- 3 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 2 people
-
Traceability of Raw Materials
- Yes
-
Test Reports for Raw Materials
- Others
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2013-01-21
-
Export Year
- 6 years
-
Main Markets
- Southeast Asia/ Mideast
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 2
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015, ISO45001:2018, ISO14001
-
Cooperated with Fortune 500
- Yes
FAQ
- How you make sure the quality?
- a. We will consult on your requirements, and recommend suitable products to you. b. Before production, we will send samples to you c. During production, we will always check quality, package, delivery etc. d. Before package, with QA to check everything e. After shipment, we will consult with you about satisfaction.
- How to make sure the delivery date?
- a. Before production, we will see we can meet your time or not. b. After your payment, we start our preparing material immediately. c. During production, We will inform you of the production scheduled. d. Before shipment, we will inform you to pay the balance on time and booking immediately.
- What is the minimum order quantity?
- The minimum order quantity is 1 piece.
- What are the available customization options?
- We offer customization from samples, customization from designs, full customization, minor customization, and flexible customization.
- What is the lead time for production?
- The average lead time is within 15 workdays for both peak and off-peak seasons.
- What certifications does the product have?
- The product meets ISO9001 standards and has passed strict quality system certification.
- What are the payment terms?
- We accept LC, T/T, PayPal, D/P, Western Union, and small-amount payments.
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