Fr4 Epoxy Fiberglass Laminate Sheet/Fr4
Contact Supplier
Product Highlights
- Customized Sizes Available: Standard sizes include 0.1-50mm thickness, with custom dimensions available upon request.
- High Dielectric Strength: Dielectric breakdown voltage reaches up to 60kV with excellent insulation resistance.
- Flame Retardant Material: Features 94V-0 flammability rating for enhanced safety in electrical applications.
- ISO9001 Certified Quality: Manufactured under strict quality control systems with ISO9001:2015 certification.
- High Thermal Stability: Thermal rating of B 130 ensures reliable performance under high temperatures.
- OEM and ODM Services: Offers full customization, minor customization, and flexible customization options.
- Fast Lead Time: Average lead time within 15 workdays for both peak and off-peak seasons.
Product Attributes
- Customization
- Available
- Application
- Industrial Equipment, Fiberglass
- Color
- Green
- Model NO.
- KLY-FR4
- Material
- Glass
- Maximum Voltage
- Above 40kv
- Thermal Rating
- B 130
- Size
- 1020*2020mm 1220*2440mm 1020*1220mm
- Density
- 1.8-2.2g/cm3
- Type
- Insulation Sheet
- Chemistry
- Inorganic Insulation
- Classification
- Hybrid Insulation Materials
- Certification
- ISO9001
- Brand
- Kangliyuan
- Transport Package
- Pallet
- Specification
- 0.1-120mm
- Trademark
- Kangliyuan
- Origin
- Tianjin
- HS Code
- 392690909
- Production Capacity
- 50000 Pieces a Year
Product Images of Fr4 Epoxy Fiberglass Laminate Sheet/Fr4
Find Similar Products
Product Description
Fr4 Epoxy Glass Laminate sheet/board is similar to G-10 sheet with anti-fire property more, which are electrical alkali-free glass woven fabric base impregnated an epoxy resin binder by processing under pressure and heat.
Specification:
MOQ:1000kg
Standard sizes:
Thickness: 0.1-50mm
Width: 36mm 40mm 48mm
Length: 48mm 80mm 96mm 120mm
Customized sizes are available.
| Item | Unit | Test Condition | Spec | Typical value |
| Density | g/cm3 | ASTMD-792 | 1.9-2.0 | 2.0 |
| Color | -- | A | --- | Light green & yellow |
| Flexural Strength | N/mm2 | LW | ≥415 | 500 |
| CW | ≥345 | 450 | ||
| Volume Resistivity | Mcm | After moisture | ≥106 | 2.0*108 |
| Water Resistivity | % | D-24/23 | ≤0.8 | 0.15 |
| Surface Resistivity | M | After moisture | ≥104 | 2.0*106 |
| Arc Resistance | S | D-48/50+D-0.5/23 | ≥60 | 135 |
| Dielectric Breakdown | Kv | D-48/50+D-0.5/23 | ≥40 | 60 |
| Comparative Tracking Index | V | IEC60112 | 175-250 | 210 |
| Properties | Unit | Value | |
| Flexural Strength perpendicular to laminations | A: under normal conditions | Mpa | ≥340 |
| E-1/15:150±5ºC | - | ||
| Impact Strength parallel to laminations (Charpy) | KJ/m2 | ≥33 | |
| Insulation Resistance after immersion in water (D-24/23) | Ω | ≥5.0×108 | |
| Dielectric strength perpendicular to laminations (in 90±2ºC transformer oil, 1 mm in thickness) |
MV/m | ≥14.2 | |
| Breakdown voltage parallel to laminations (in 90±2ºC transformer oil) |
KV | ≥35 | |
| Permittivity (50Hz) | - | ≤5.5 | |
| Permittivity (1MHz) | - | ≤5.5 | |
| Dissipation Factor (50Hz) | - | ≤0.04 | |
| Dissipation Factor (1MHz) | - | ≤0.04 | |
| Water Absorption (D-24/23, 1.6mm in thickness) | mg | ≤19 | |
| Density | g/cm3 | 1.85 | |
| Flammability | - | 94V-0 | |
| Color | - | Green | |
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.

Our products all meet the national standard, IEC standard and ISO standard. We have more than 60 national inventions and utility model patents, and the reliable quality of our products and our superb service has received warm praise from our customers!
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 do you ensure quality?
- We consult on requirements, send samples before production, check quality and package during production, perform QA checks before packaging, and consult on satisfaction after shipment.
- How to ensure the delivery date?
- We verify time feasibility before production, prepare materials immediately after payment, inform you of the schedule during production, and remind you to pay the balance before shipment.
- What are the standard sizes?
- Standard thickness is 0.1-50mm. Widths include 36mm, 40mm, 48mm. Lengths include 48mm, 80mm, 96mm, 120mm. Custom sizes are also available.
- What is the minimum order quantity?
- The standard MOQ is 1000kg, though the business type lists a minimum of 1 piece for general trading.
- What certifications does the product have?
- The product meets national standards, IEC standards, and ISO standards, with ISO9001:2015 and ISO45001:2018 certifications for the manufacturing process.
- Is customization available?
- Yes, we offer customization from samples, designs, full customization, minor customization, and flexible customization options.
- What are the payment terms?
- We accept LC, T/T, PayPal, D/P, Western Union, and small-amount payments.
- What is the lead time for production?
- The average lead time is within 15 workdays for both peak season and off-peak season.
Send your message to this supplier
People who viewed this also viewed
-
US$6.00-6.70 / Piece
-
US$1.00-1.90 / Piece
-
US$6.00-6.70 / kg
-
US$4.00 / kg
Find Similar Products By Category
- Supplier Homepage
- Products
- Fiberglass Material
- Fiberglass Sheet
- Fr4 Epoxy Fiberglass Laminate Sheet/Fr4
Related Categories
Hot Searches
- China Motor Factories
- Electric Motor Factories
- Brake Motor Factories
- Universal Motor Factories
- Fiberglass Electrical Sheet
- Fiberglass Epoxy Fr4 Pcb
- Fiberglass Cloth Sheet
- Epoxy Fiberglass Sheet
- Fiberglass Wire Sheet
- Top 10 Motor
- Motor Trends
- Fiberglass Sheet Bulkbuy