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Corrosion-Resistant Polyimide Film Covered Wire - China Suppliers & Factory for High-Quality Electrical Solutions

Polyimide film covered wire is a high-performance winding wire manufactured by wrapping multiple layers of polyimide film around a conductor made of high-quality oxygen-free copper or aluminum rod. This type of wire, produced by reputable suppliers and factories in China, boasts excellent voltage resistance and can endure high temperatures of up to 220°C. Its thin insulation layer makes it ideal for use in various electrical applications, including motors, reactors, and welding machines. The production of polyimide film covered wire starts with the extrusion of electrical bare copper or aluminum wire, ensuring superior quality and reliability. Choose our polyimide film covered wire for your electrical projects and benefit from the expertise of top manufacturers in China

    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 Al

    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.

    Narrow Side (Thickness)
    Range1.00 mm – 8.00 mm
    Wide Side (Width)
    Range3.00 mm – 25.00 mm
    Specifications of Copper Flat Wire Cu

    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.

    Narrow Side (Thickness)
    Range0.90 mm – 6.00 mm
    Wide Side (Width)
    Range2.00 mm – 16.00 mm
    ⚙️ 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

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    Frequently Asked Questions
    QWhat standard does the flat wire production follow?
    All flat wire products are manufactured strictly in accordance with GB/T 7673-2008 and corresponding Enterprise Standards, ensuring consistent quality, high precision, and compliance with international electrical and electronic industry requirements.
    QWhat size range is available for aluminum flat wire?
    Aluminum flat wire is available with a narrow side (thickness) from 1.00 mm to 8.00 mm and a wide side (width) from 3.00 mm to 25.00 mm. Custom sizes beyond this range can also be arranged upon request.
    QWhat are the available dimensions for copper flat wire?
    Copper flat wire is 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. If your specifications fall outside this range, customized production is available to meet your specific technical requirements.
    QWhat 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.
    QWhat are the main application areas for these flat wires?
    Aluminum and copper flat wires are widely used in transformers, reactors, electric motor windings, high-power applications, and precision electronic devices. Their properties such as high conductivity, thermal resistance, and mechanical strength make them suitable for demanding electrical systems.
    QCan I order flat wire in a custom size not listed in the standard specifications?
    Yes. If your required size or specification is beyond the standard range for either aluminum or copper flat wire, customized production can be arranged to meet your specific design and technical needs. Please contact us with your detailed requirements.

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