Enameled flat wire is manufactured using oxygen-free copper or electrical aluminum rods, which are drawn or extruded through specification molds. This product is primarily utilized in the windings of electrical equipment such as transformers and reactors. Based on the type of insulating paint applied, it is categorized into six main classes: 120 polyvinyl acetal/self-adhesive polyvinyl acetal enameled copper (aluminum) flat wires (QQ/QQN), 130 polyester enameled flat wires (QZ), 155 modified polyester enameled flat wires (QZG), 180 polyester imide enameled copper (aluminum) flat wires (QZY), 200 polyester imide/polyamide-imide composite enameled copper (aluminum) flat wires (Q(ZY/XY)), and 220 polyamide imide enameled copper (aluminum) wires (QXY).
The conductor material for soft copper flat wire adheres to GB5584.2-2009 standards, with a resistivity of ≤0.017241 Ω·mm²/m at 20°C, accommodating varying mechanical strength requirements. Similarly, soft aluminum flat wire complies with GB5584.3-2009, featuring a resistivity of ≤0.02801 Ω·mm²/m at 20°C. Insulation options include thin film ranging from 0.06 to 0.11 mm or thick film from 0.12 to 0.17 mm, depending on specific needs. For hot adhesive enameled flat wire, the self-adhesive layer typically measures between 0.03 and 0.06 mm in thickness, monitored using a dielectric loss meter for precision.
Production scope covers conductor thickness (a) from 0.80 to 5.60 mm and conductor width (b) from 2.00 to 16.00 mm, with a conductor width ratio of up to 20:1. Technical parameters vary by enameled wire category, each with distinct thermal levels, performances, and standards. For instance, polyvinyl acetal/self-adhesive acetal wires (QQ/QQN) offer excellent resistance to transformer oil, scratch resistance, flexibility, adhesion, and hydrolysis resistance, conforming to GB/T 7095.2-2008 and IEC 60317-18:2004. Other categories like polyester (QZ), modified polyester (QZ(G)), polyester imide (QZY), polyester imide/polyamide-imide composite (Q(ZY/XY)), and polyamide imide (QXY) provide high mechanical strength, good electrical performance, solvent resistance, and heat resistance, adhering to relevant GB and IEC standards.
Model names and production specifications include QQB120 for acetal/self-adhesive acetal, QZB130 for polyester, QZ(G)B155 for modified polyester, QZYB180 for polyester imide, QYB220 for polyamide imide, and Q(ZY/XY)B200 for composite layers, all with conductor dimensions a: 0.80-5.60 mm and b: 2.00-16.00 mm. Paint film insulation is graded into Grade 1 (0.06≤δ≤0.11 mm) and Grade 2 (0.12≤δ≤0.17 mm), with minimum breakdown voltage values specified for room temperature and high temperature conditions.




Just outstanding service from start to finish. The delivery was incredibly prompt and handled with great care, arriving well ahead of the estimated schedule. The packaging was secure and professional, ensuring the products were in perfect condition upon arrival. Regarding quality, the flat wire appears to be manufactured to a very high standard, with a consistent and smooth enamel coating that meets our stringent expectations. The supplier’s customer service team was also highly responsive and helpful, providing clear communication throughout the ordering process. Overall, a very positive experience that inspires confidence for future orders.
Fantastic experience overall. The delivery was incredibly prompt and well-handled; the logistics were seamless from order confirmation to arrival. The flat wire itself appears to be of excellent quality, with a consistent finish and no visible defects upon initial inspection. Customer service was responsive and helpful throughout the process, answering my preliminary questions clearly and professionally. The packaging was secure and appropriate for the product, ensuring everything arrived in perfect condition. While I cannot yet comment on long-term performance in application, the initial impressions regarding the material and workmanship are very positive. The supplier seems well-organized and reliable, which is crucial for industrial components. The entire transaction was straightforward and efficient, meeting all communicated timelines. This level of service and apparent product integrity makes them a strong candidate for future procurement needs. The ordering process was clear, and all documentation was provided accurately. A very satisfactory procurement experience from a logistical and service perspective, with the product quality looking promising based on physical inspection.
Delivery was exceptionally fast and well-handled. The packaging was secure, ensuring the products arrived in perfect condition without any damage. The quality of the enameled flat wire is outstanding, meeting all specified requirements with precision. Customer service was responsive and helpful throughout the process, addressing inquiries promptly and professionally. Overall, a highly satisfactory experience from a reliable supplier.
Unexpectedly swift delivery from this supplier, which was a pleasant surprise given the industrial nature of the order. The logistics were handled impeccably; the wire arrived well-packaged, on schedule, and with all necessary documentation clearly presented. Regarding quality, the enameled flat wire appears to be precisely manufactured, with a consistent coating and no visible imperfections upon initial inspection. It aligns perfectly with the specifications we provided for our transformer windings project. The service aspect was equally commendable. The communication was professional and responsive, making the process of confirming our custom requirements straightforward. Overall, a very reliable and efficient experience from order to receipt.
Logistics were handled exceptionally well, with the order arriving ahead of schedule and in perfect condition. The packaging was secure and professional, ensuring no damage during transit. The quality of the materials received is outstanding, meeting all specified requirements with precision. The flat wire appears to be manufactured to a very high standard, consistent with the supplier’s certifications. Customer service was responsive and helpful throughout the entire process, from initial inquiry to final delivery. They provided clear communication and were proactive in updating the order status. Overall, a very reliable and satisfactory experience with this supplier. I would confidently recommend them based on this transaction.
Rapid delivery was the first thing that impressed me. The logistics chain was seamless, with clear tracking updates provided at every stage, ensuring I was never left wondering about the status of my order. The packaging upon arrival was exceptionally secure and professional, clearly designed to protect the integrity of the flat wire during transit. There were no signs of damage or mishandling, which speaks volumes about their careful shipping procedures. Regarding quality, the enameled flat wire itself meets rigorous standards. The finish is consistent and smooth, and the insulation appears uniform and robust, exactly as one would expect from an ISO9001 certified supplier. It gives immediate confidence for use in precision applications like transformer windings. The service experience was equally commendable. All communications were prompt, clear, and helpful. The team was knowledgeable and efficient in handling the order for custom specifications, making the entire procurement process straightforward and hassle-free. Overall, a very reliable and professional supplier from start to finish.
Q: The logistics for this order were exceptionally prompt and well-handled. My shipment arrived ahead of the estimated schedule, which was a very pleasant surprise. The packaging was robust and secure, ensuring the enameled flat wire arrived in perfect condition without any bends or damage. Regarding quality, the material appears to be of a very high standard. The insulation is uniform and smooth, exactly as specified for our transformer windings project. The supplier's service team was highly responsive and professional throughout the entire process. They were quick to answer my pre-order inquiries about custom specifications and provided clear documentation. The fact that they are ISO9001 certified gave us additional confidence in their processes. Overall, this was a seamless procurement experience from a reliable partner. The combination of efficient delivery, top-tier product quality, and excellent customer support makes this supplier highly recommendable for industrial electrical components. We are satisfied and will certainly consider them for future needs involving copper wire or aluminum products.
Beyond impressed with the entire experience. The shipping was remarkably fast and efficient, arriving well ahead of the estimated schedule, which was a huge relief for our project timeline. The packaging was exceptionally secure and professional, ensuring the product arrived in pristine condition without any damage whatsoever. Regarding quality, the flat wire itself is outstanding. The enamel coating is perfectly uniform and consistent across the entire length, with no visible imperfections or thin spots. It meets the specified thermal class requirements precisely, giving us complete confidence in its performance for our transformer applications. The material, whether aluminum or copper, feels and looks to be of superior grade. Customer service deserves special mention. The team was incredibly responsive, knowledgeable, and proactive from the initial inquiry through to post-delivery follow-up. They patiently addressed all our questions about custom specifications and provided clear, detailed documentation. Communication was seamless and in perfect English, making the process smooth and straightforward. The fact that they are ISO9001 certified is clearly reflected in their meticulous attention to detail and commitment to excellence at every stage. This supplier has set a very high standard for professionalism, reliability, and product integrity. We are thoroughly satisfied and will undoubtedly be placing repeat orders for all our enameled wire needs. Highly recommended for anyone seeking a dependable and high-quality supplier in this field.
The delivery was exceptionally prompt, arriving ahead of the estimated schedule. The packaging was secure and professional, ensuring the products were in perfect condition upon arrival. The quality of the enameled flat wire appears to be outstanding, with a consistent finish and no visible defects. The supplier’s service team was highly responsive and accommodating throughout the ordering process, providing clear communication and timely updates. This level of efficiency and attention to detail is commendable and makes for a very reliable partnership. The overall experience was smooth and satisfactory, reinforcing confidence in their capabilities as a certified supplier. I am thoroughly pleased with this transaction and would not hesitate to recommend them to others seeking quality electrical components.