G10 Fr4 Electrical Insulation Material

2 year ago

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SHENZHEN XIONGYIHUA PLASTIC INSULATION LTD

10 year

Product details

FR4/G10/G11 Epoxy Glass Fiber Insulation Sheet for Cathodic Protection & Oil & Gas Corrosion Prevention

Product Overview

In the field of cathodic protection and oil & gas corrosion prevention, glass fiber insulation sheets (especially FR4/G10/G11 epoxy glass fiber sheets) are absolute essential consumables. Our epoxy glass fiber insulation sheets are manufactured by impregnating high-purity epoxy resin with alkali-free glass fiber cloth, cured under high temperature and high pressure. Specifically engineered for cathodic protection systems of oil and gas pipelines, they deliver exceptional electrical insulation, mechanical strength, corrosion resistance, and dimensional stability, perfectly meeting the insulation isolation requirements for all oil & gas corrosion prevention scenarios. As a core material to ensure the efficient operation of cathodic protection systems and extend pipeline service life, the product is compatible with precision CNC machining, customizable for various insulation gaskets, partitions, and base plates. Compliant with international standards such as ASTM D709 and IEC 60893, it is widely used in global oil & gas pipelines, long-distance pipelines, storage tanks, and other corrosion prevention projects, providing safe, reliable, and durable insulation solutions for the oil & gas industry.

Technical Specifications (Cathodic Protection & Oil & Gas Corrosion Prevention Grade)

Parameter Category	Detailed Specifications
Core Material	Alkali-free glass fiber cloth + epoxy resin (FR4/G10/G11 optional)
Thickness Range	0.5mm - 50mm (Optimal for flange gaskets: 1.0-5.0mm; partitions/base plates: 3.0-10.0mm, fully customizable)
Standard Sizes	1020×1220mm, 1020×2040mm, 1220×2440mm (large-format customization available)
Color	FR4: Yellow-green / Water-green; G10/G11: Black / Natural color (customizable)
Key Electrical Properties	Insulation Resistance: ≥1×10¹²Ω; Dielectric Strength: ≥15kV/mm; Dielectric Constant: 4.5-5.5 (1MHz)
High Temperature Resistance	FR4: Continuous use temperature 130℃; G10: 150℃; G11: 180℃ (short-term resistance up to 200℃)
Mechanical Properties	Flexural Strength: ≥350MPa; Tensile Strength: ≥200MPa; Impact Strength: ≥15kJ/m²
Environmental Adaptability	Water Absorption: ≤0.15%; Corrosion Resistance: Resistant to oil & gas, acids, alkalis, salt spray, soil corrosion; Flame Retardancy: UL94 V-0
Processability	Compatible with CNC engraving, cutting, stamping, drilling, processable for various special-shaped insulation parts
Certifications & Compliance	ISO9001, ISO14001, RoHS

Core Product Features (Tailored for Cathodic Protection & Oil & Gas Corrosion Prevention)

Extreme Insulation Performance, Eliminating Current Loss

Made of high-purity epoxy resin and alkali-free glass fiber, with insulation resistance up to 1×10¹²Ω and dielectric strength ≥15kV/mm, it effectively isolates cathodic protection current, prevents current loss at pipeline connections, ensures stable protection potential of cathodic protection systems, and avoids pipeline corrosion failure caused by stray current and current shunting, making it the core material for flange insulation gaskets.
Superior Corrosion Resistance, Adapting to Harsh Oil & Gas Environments

Resistant to corrosive media such as oil & gas, crude oil, natural gas, acids, alkalis, salt spray, and soil, it remains stable without water absorption, aging, or decomposition when used long-term in buried, humid, or corrosive environments. It perfectly adapts to outdoor/underground corrosion prevention scenarios such as oil & gas pipelines, storage tanks, and long-distance pipelines, with a service life far exceeding ordinary insulation materials.
High Strength & Dimensional Stability, Impact & Deformation Resistant

With flexural strength ≥350MPa, it has excellent mechanical strength and impact resistance, withstanding the pressure and vibration during pipeline installation, pressure testing, and operation. Flange gaskets do not compress or deform during use, maintaining sealing and insulation performance long-term; partitions and base plates remain structurally stable without warping or cracking, ensuring internal insulation safety of equipment.
High Temperature Resistance & Flame Retardancy, Adapting to Complex Working Conditions

G11 grade has a continuous use temperature up to 180℃ and short-term resistance to 200℃, while achieving UL94 V-0 flame retardancy. It is suitable for high-temperature equipment, welding areas, storage tank heating systems, and other scenarios in the oil & gas industry, self-extinguishing in case of fire without spreading flames, enhancing oil & gas production safety.
Easy Machining & Customization, Meeting All Scenario Requirements

Compatible with CNC engraving, stamping, drilling, and other processing technologies, it can be precisely processed into various flange insulation gaskets, special-shaped partitions, and test station base plates. With strict dimensional tolerance control, it adapts to different specifications of pipeline flanges, corrosion prevention power cabinets, and test junction boxes, supporting small-batch customization and mass production.

Core Application Scenarios (Three Essential Scenarios for Cathodic Protection & Oil & Gas Corrosion Prevention)

1. Flange Isolation Kits (FIK)

When laying oil and gas pipelines, G10/G11 glass fiber sheets must be used as insulation gaskets at pipeline connections to prevent the loss of cathodic protection current. Our epoxy glass fiber sheets can be processed into standard/non-standard flange insulation gaskets, forming complete isolation kits with insulating sleeves and washers. They effectively isolate pipelines from flanges and bolts, block current shunting, ensure the protection efficiency of cathodic protection systems, and avoid electrochemical corrosion of pipelines, serving as core insulation consumables for long-distance oil & gas pipelines, gathering pipelines, and storage tank connections.

2. Inside Transformer Rectifiers

Used as insulation partitions and terminal mounting boards in corrosion prevention power cabinets. The high insulation performance of epoxy glass fiber sheets isolates high-voltage circuits from the cabinet, preventing electric leakage and short circuits, ensuring the stable operation of transformer rectifiers (cathodic protection power equipment). As terminal mounting boards, they provide mechanical support and electrical isolation, avoiding safety accidents caused by equipment failures, and are core insulation components for cathodic protection power systems.

3. Test Stations

Used as insulation base plates in test junction boxes on pipeline ground. Test stations are used to monitor the cathodic protection potential of pipelines. As insulation base plates, epoxy glass fiber sheets isolate test lines in junction boxes from metal shells, preventing interference of stray current in potential testing, ensuring the accuracy of test data. They also resist corrosion and moisture in outdoor environments, extending the service life of test stations, and are essential insulation materials for pipeline cathodic protection monitoring systems.

Supplementary Application Scenarios

Oil & gas storage tank corrosion prevention: Insulation isolation for tank bottom plates, insulation gaskets for tank walls
Oil & gas stations: Insulation isolation for valves, insulation supports for equipment
Offshore oil & gas platforms: Flange insulation for offshore pipelines, insulation partitions for equipment
Auxiliary cathodic protection facilities: Insulation joints, insulation components for test wells

Customization Services

Size & Thickness Customization: Customizable thickness from 0.5mm to 50mm, standard/non-standard sizes, adapting to different specifications of flanges, cabinets, and test stations
Material Selection: FR4 (general-purpose), G10 (medium-high temperature), G11 (high temperature), matching working conditions as required
Processing Services: CNC engraving, stamping, drilling, special-shaped processing, producing flange gaskets, partitions, base plates according to drawings
Kit Matching: Provide complete flange isolation kits (including gaskets, sleeves, washers) for one-stop procurement
Surface Treatment: Polishing, sanding, insulation coating, enhancing corrosion resistance and insulation performance

Certifications & Compliance

Compliant with ASTM D709, IEC 60893 international standards for epoxy glass fiber sheets
ISO9001 Quality Management System and ISO14001 Environmental Management System certified
Compliant with EU RoHS, REACH, and MSDS safety standards
UL94 V-0 flame retardancy certified, special insulation performance test for oil & gas industry passed
Adapting to NACE SP0175 (Cathodic Protection Pipeline Insulation) industry standard

FAQ (Exclusive for Cathodic Protection & Oil & Gas Corrosion Prevention)

Q1: Why choose G10/G11 instead of ordinary FR4 for flange isolation gaskets?A: G10/G11 outperforms ordinary FR4 in mechanical strength, high temperature resistance, and compression resistance. Flange gaskets are subject to long-term pipeline pressure and temperature changes, and G10/G11 can avoid insulation failure caused by gasket compression deformation, making it more suitable for buried and high-pressure working conditions of oil & gas pipelines, ensuring no loss of cathodic protection current.

Q2: Is this insulation sheet suitable for buried pipelines?A: Fully applicable. With water absorption ≤0.15%, resistant to soil corrosion and salt spray corrosion, it remains stable without aging or decomposition when used long-term in buried conditions, with stable insulation performance, and is the standard material for flange insulation of buried oil & gas pipelines.

Q3: What is the lead time for custom flange isolation gaskets?A: For standard specification flange gaskets, the lead time is 3-7 days; for non-standard special-shaped gaskets, the lead time is 7-15 days, and expedited production is available according to project progress.

Q4: How to choose FR4/G10/G11 grades?A: - For ordinary room temperature working conditions: Choose FR4 for high cost performance;

For medium-high temperature and high-pressure working conditions: Choose G10;
For high temperature (above 150℃) and strong corrosion working conditions: Choose G11 for optimal performance.