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As a leading manufacturer, Jinhua Dika Electrical Equipment Co., Ltd. specializes in producing high-performance, reliable electrical components for global markets. Our color-coded heat shrink tubes are engineered to solve the critical challenge of wire and cable identification in complex electrical systems. We understand that clear, permanent, and safe identification is not just a convenience but a necessity for maintenance, safety, and compliance in industrial, commercial, and utility applications. With over a decade of experience and a commitment to quality certified by multiple international standards, we provide a solution that enhances organization, reduces downtime, and prevents costly wiring errors.
Our color-coded heat shrink tubing offers a superior alternative to traditional labeling methods like tape or markers. It provides a permanent, abrasion-resistant, and insulated sleeve that conforms tightly to the wire upon heating, creating a durable and legible color identifier. This product is essential for anyone involved in electrical panel building, control system wiring, automotive harness assembly, telecommunications, and data center management.
Key Product Features & Technical Advantages:
- Permanent & Legible Identification: The color is embedded within the tube material, ensuring it will not fade, rub off, or become illegible over time, unlike printed labels or markers.
- Dual Functionality: Serves simultaneously as a color code and an insulating, strain-relief, and abrasion-resistant protective layer for wires and connections.
- Wide Color Palette: Available in standard industry color sets (e.g., 12 colors) that comply with international wiring color codes for phases, neutrals, grounds, and signal identification.
- Consistent Shrinkage & Seal: Manufactured to provide uniform radial shrinkage when heated with a heat gun, creating a tight, seamless seal around the cable without wrinkles or gaps.
- Flame Retardant & Chemically Resistant: Formulations are available with flame-retardant properties (meeting UL 224 VW-1) and resistance to common oils, solvents, and fuels.
- Excellent Environmental Durability: Resists moisture, UV exposure, and temperature extremes, making it suitable for both indoor and demanding outdoor applications.
Technical Specifications & Selection Guide:
Selecting the right tubing depends on your wire size and application requirements. The table below outlines common specifications.
| Parameter | Typical Specification / Options |
| Common Materials | Polyolefin (most common), PVC, Fluoropolymer (for high temp) |
| Standard Shrink Ratios | 2:1 (shrinks to half its supplied diameter), 3:1, 4:1 |
| Operating Temperature Range | -55°C to +125°C (for standard polyolefin) |
| Recovered Wall Thickness | Thin wall (flexible), Medium wall, Heavy wall (max protection) |
| Certifications (Optional) | UL Recognized, CSA Certified, RoHS Compliant, REACH SVHC free |
| Common Color Sets | 12-color set, 6-color set, custom color matching available |
Benefits for Your Business:
- Enhanced Safety & Compliance: Reduces the risk of wiring errors that can lead to short circuits, equipment damage, or safety hazards. Helps meet industry color-coding standards.
- Reduced Maintenance & Downtime: Enables technicians to quickly and accurately trace circuits, significantly speeding up troubleshooting, repairs, and modifications.
- Improved Professional Appearance: Creates a clean, organized, and professional look for wiring harnesses and control panels, reflecting positively on your workmanship.
- Long-Term Cost Savings: The permanent nature of the identification eliminates the need for re-labeling, reducing labor costs over the lifecycle of the installation.
Trust in the expertise and scale of Jinhua Dika Electrical Equipment. With an annual export value reflecting our global reach and a dedicated team of 11-50 professionals, we have the capacity to support both large-scale OEM projects and smaller distributor orders. Our products are shipped worldwide from major ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring reliable delivery to key markets across North America, Europe, Asia, and beyond. Our manufacturing processes are guided by a commitment to quality management systems. Choose our color-coded heat shrink tubing not just as a component, but as a strategic investment in the reliability, safety, and efficiency of your electrical systems. Contact us today to discuss your specific requirements, request samples, or receive a competitive quotation.
Frequently Asked Questions (FAQ):
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How do I choose the correct size of heat shrink tubing for my wire?
Select a tubing size where the expanded inner diameter is slightly larger than the diameter of the wire or bundle you are covering. After shrinking, the recovered inner diameter should be smaller than the wire diameter for a tight fit. We provide sizing charts to assist with this selection. -
What is the difference between 2:1 and 3:1 shrink ratio?
A 2:1 ratio means the tubing shrinks to approximately half its supplied diameter. A 3:1 ratio shrinks to one-third. Higher ratios allow one tube size to fit a wider range of wire diameters, offering more inventory flexibility. -
Can this tubing be used outdoors?
Yes, many of our polyolefin tubes are formulated with UV stabilizers for outdoor use. It is important to specify your need for UV resistance when inquiring to ensure you receive the appropriate material grade. -
What tool is needed to apply the heat shrink tube?
A standard electric heat gun is the most common and effective tool. It provides controlled, even heat. Open flames are not recommended as they can damage the tubing or wire insulation. -
Are the colors standardized?
We offer standard sets that align with common industry practices for electrical identification. However, specific color codes can vary by country and industry. We can discuss your application to ensure the colors meet your needs. -
Is custom color matching available for large orders?
Yes, for volume production orders, we have the capability to provide custom color matching to meet specific corporate or project branding requirements. -
Does the tubing provide electrical insulation?
Absolutely. A primary function of heat shrink tubing is to provide electrical insulation. The wall thickness and material determine its dielectric strength, which we can specify based on your voltage requirements. -
What is the shelf life of the product?
When stored in a cool, dry place away from direct sunlight, our heat shrink tubing has a long shelf life of several years without degradation of its shrinking or material properties.
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