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Corrosion-Resistant Polyimide Film Covered Wire - China Suppliers and Factory for High-Quality Insulated Winding Wire

Polyimide film covered wire is a high-performance winding wire manufactured by wrapping 2-3 layers of polyimide film insulation around a conductor made from oxygen-free copper or electrical round aluminum rod. This process involves extruding or drawing the metal through a precise die and then annealing it to ensure superior quality. The resulting product offers outstanding voltage resistance with a minimal insulation layer and is capable of withstanding temperatures up to 220°C, Primarily used in the production of windings for motors, reactors, welding machines, and various electrical appliances, this polyimide film covered wire is an essential component for many industrial applications. As a leading supplier in China, our factory utilizes state-of-the-art technology and high-quality materials to produce reliable and durable polyimide film covered wire. Trust our expertise for superior wiring solutions that meet your electrical needs

    Standards and Product Specifications

    Our production strictly follows GB/T 7673-2008 and corresponding Enterprise Standards, ensuring high precision, consistency, and reliability across all product lines. Each conductor is manufactured using advanced processing technology and quality-controlled under international standards to meet the demanding requirements of electrical and electronic industries.

    Specifications of Aluminum Flat Wire

    We offer aluminum flat wires with a narrow side dimension ranging from 1.00 mm to 8.00 mm and a wide side ranging from 3.00 mm to 25.00 mm. These wires feature excellent conductivity, lightweight properties, and superior flexibility, making them suitable for transformers, reactors, and electric motor windings. Aluminum conductors are also favored for their cost-effectiveness and corrosion resistance in high-efficiency power systems.

    Aluminum Flat Wire
    Narrow Side 1.00 mm – 8.00 mm
    Wide Side 3.00 mm – 25.00 mm
    Key Features Lightweight · Corrosion Resistant

    Specifications of Copper Flat Wire

    Our copper flat wires are available with a narrow side dimension from 0.90 mm to 6.00 mm and a wide side from 2.00 mm to 16.00 mm. Copper conductors are characterized by their outstanding electrical conductivity, heat resistance, and mechanical strength, ideal for high-power applications, transformers, and precision electronic devices.

    Copper Flat Wire
    Narrow Side 0.90 mm – 6.00 mm
    Wide Side 2.00 mm – 16.00 mm
    Key Features High Conductivity · Heat Resistant
    ⓘ  If your required size or specification is beyond the above range, customized production can be arranged to meet your specific design and technical needs.

    Breakdown Voltage of Polyimide Film Wrapped Wire

    The breakdown voltage and insulation performance of our polyimide film wrapped wire strictly conform to the corresponding business and industry standards, ensuring stable dielectric strength, long service life, and excellent thermal endurance under extreme operating conditions.

    Technical Parameter

    Wrapped Process Insulation Thickness (mm) Min Breakdown Voltage / V >
    Nominal Value Tolerance
    2-layers polyimide film self-locking wrapped 0.15 ±0.03 6000
    2-layers polyimide film wrap in the opposite direction 0.15 ±0.03 6000
    3 layers of polyimide film wrap in the opposite direction 0.23 ±0.03 7000
    Frequently Asked Questions
    Q What standards do your flat wires comply with?
    Our flat wires are manufactured in strict accordance with GB/T 7673-2008 and corresponding Enterprise Standards, ensuring high precision, consistency, and reliability to meet the requirements of electrical and electronic industries.
    Q What size range is available for aluminum flat wire?
    Aluminum flat wires are available with a narrow side from 1.00 mm to 8.00 mm and a wide side from 3.00 mm to 25.00 mm. For dimensions outside this range, customized production is available upon request.
    Q What are the dimension options for copper flat wire?
    Copper flat wires are offered with a narrow side from 0.90 mm to 6.00 mm and a wide side from 2.00 mm to 16.00 mm. Custom sizes beyond this range can be arranged to suit specific technical requirements.
    Q What is the minimum breakdown voltage for polyimide film wrapped wire?
    For 2-layer polyimide film wrapping (both self-locking and opposite direction), the minimum breakdown voltage is 6000 V. For 3-layer opposite direction wrapping with a nominal insulation thickness of 0.23 mm, the minimum breakdown voltage reaches 7000 V.
    Q What applications are aluminum flat wires best suited for?
    Aluminum flat wires are ideal for transformers, reactors, and electric motor windings. Their lightweight nature, excellent conductivity, and corrosion resistance make them a cost-effective choice for high-efficiency power systems.
    Q Can I order flat wires with custom specifications?
    Yes. If your required size or specification falls outside the standard ranges listed for either aluminum or copper flat wires, customized production can be arranged to meet your specific design and technical needs. Please contact us with your requirements.

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