Heat Shrink Yellow And Green Tubes
- CCMT
- CHANGCHUN,CHINA
- Based on the order quantity
- 5 million meters per month
1. We adopt a yellow-green bi-color marking that is an international standard. This way, it is easily visible in dull surroundings with oil, and helps eliminate wire mixing.
2. Our heat shrink tube is colored and has an electric strength of 17.5 kV/mm and can undergo heat aging at 158℃ for 168 hours, which assures that it has a tight, waterproof, corrosionproof and highly insulating characteristics when operating in long-term elevated temperature conditions.
3. Our color heat shrink sleeve is compatible with all sizes (2.0–180.0 mm), complies with UL/IEC standards, and is suitable for a variety of wire thicknesses.
The common single-color or sticker-type earth markers are likely to become worn, detached or covered with oil during maintenance works of machines causing by accident to connect ground wire to power line, so that protective earth leakage device trips or machine body becomes electrified leading to more rework/safety remediation costs.
Solution:
Colored heat shrink tubes have color codes and a insulator that protects. The colors won't go anywhere after shrinking since they are embedded in the wall. They will not get wiped off from oils and will not get damaged mechanically. Besides that, the material has a very good electrical breakdown strength at 17.5 kV/mm and heat aging resistance such that even if the conductor gets hot over a long period of time the tubing will not come off, thereby keeping the grounding terminal visually different from the power circuit for a long time.
Product Introduction:
Our colored heat shrink tubes are made mostly of cross-linked polyolefin, a material with excellent insulating and corrosion resistance properties. When heat is applied, it shrinks down closely on the conductor providing excellent mechanical protection plus permanent color coding. Such applications include but are not limited to: distribution panels, mechanical installations, and diversified wiring systems. Color coding using heat shrink tubes is one of the vital aspects of maintaining safe electrical circuits.
Product Specifications:
| Size | Before Recovery(mm） | After Recovery(mm) | Standard Package(m/disc) | |
| Internal Dimater(Min) | Internal Diameter | Wall Thickness | ||
| 2X Shrinking Ratio | ||||
| 2.0 | 2.2±0.3 | 0.98±0.1 | 0.35±0.05 | 200 |
| 3.0 | 3.2±0.4 | 1.45±0.2 | 0.35±0.05 | 200 |
| 4.0 | 4.2±0.4 | 1.96±0.2 | 0.35±0.05 | 200 |
| 5.0 | 5.2±0.4 | 2.48±0.2 | 0.35±0.05 | 100 |
| 6.0 | 6.2±0.4 | 2.96±0.3 | 0.45±0.15 | 100 |
| 7.0 | 7.2±0.4 | 3.48±0.3 | 0.45±0.15 | 100 |
| 8.0 | 8.2±0.5 | 3.95±0.3 | 0.45±0.15 | 100 |
| 10.0 | 10.2±0.5 | 4.90±0.3 | 0.50±0.15 | 100 |
| 12.0 | 12.2±0.5 | 5.90±0.5 | 0.50±0.15 | 100 |
| 14.0 | 14.2±0.5 | 6.90±0.5 | 0.50±0.15 | 100 |
| 16.0 | 16.2±0.6 | 7.90±0.5 | 0.50±0.15 | 100 |
| 20.0 | 20.2±0.8 | 9.90±0.5 | 0.70±0.20 | 100 |
| 25.0 | 25.3±0.8 | 12.30±1.0 | 0.70±0.20 | 50 |
| 30.0 | 30.2±0.8 | 14.70±1.0 | 0.70±0.20 | 50 |
| 35.0 | 35.2±0.8 | 17.30±1.0 | 0.80±0.20 | 50 |
| 40.0 | 40.0±1.0 | 19.80±1.0 | 0.80±0.20 | 50 |
| 50.0 | 50.0±1.0 | 24.80±1.0 | 0.80±0.20 | 50 |
| 60.0 | 60.0±1.0 | 29.80±1.0 | 0.80±0.20 | 25 |
| 70.0 | 70.0±1.0 | 34.00±2.0 | 1.00±0.02 | 25 |
| 80.0 | 80.0±1.0 | 39.00±2.0 | 1.00±0.02 | 25 |
| 90.0 | 90.0±1.0 | 44.00±2.0 | 1.00±0.02 | 25 |
| 100.0 | 100.0±2.0 | 49.00±2.0 | 1.00±0.02 | 25 |
| 120.0 | 120.0±2.0 | 59.00±2.0 | 1.20±0.02 | 25 |
| 150.0 | 150.0±2.0 | 74.00±2.0 | 1.20±0.02 | 25 |
| 180.0 | 180.0±2.0 | 88.00±2.0 | 1.20±0.02 | 25 |
| 3X Shrinking Ratio | ||||
| 3.2 | 3.2±0.4 | 1.0±0.1 | 0.55±0.15 | 200 |
| 4.8 | 4.8±0.4 | 1.5±0.2 | 0.60±0.15 | 100 |
| 6.4 | 6.4±0.4 | 2.0±0.2 | 0.65±0.15 | 100 |
| 9.5 | 9.5±0.5 | 3.0±0.3 | 0.75±0.15 | 50 |
| 12.7 | 12.7±0.5 | 4.0±0.3 | 0.75±0.20 | 50 |
| 19.1 | 19.1±0.8 | 6.0±0.5 | 0.80±0.20 | 50 |
| 25.4 | 25.4±0.8 | 8.0±0.5 | 1.00±0.20 | 50 |
| 39 | 39±1.0 | 13.0±1.0 | 1.50±0.20 | 50 |
Product Performance Indicators:
| Property | Test Method | Standard | Typical Performance |
| Tensile Strength(MPa) | ASTM D2671 | ≥ 10.4 | 11.5MPa |
| Elongation | ASTM D2671 | ≥ 300 | 450% |
| Tensile Strength after Againg(MPa） | UL224 158℃×168hr | ≥ 7.3 | 8.5MPa |
| Elongation after Againg(%) | UL224 158℃×168hr | ≥ 200 | 350% |
| Dielectric Strength(kV/mm) | IEC243 | ≥ 15 | 17.5kV/mm |
| Volume Resistivity(Ω.cm) | ASTM D876 | ≥ 1014 | 2.5x1014Ω·cm |
Advantages of Colored Shrink Tubing:
1. Internationally recognized color coding for easy identification.
By means of the earth or ground connection we indicate the difference at a glance in very dark cabinets or oily environments to avoid mixing up the earthing terminal from power and control circuits; this saves wiring headaches, greatly facilitates the work of technicians and ensures the safety of the person as well.
2. Excellent electrical and anti-aging properties for long-term reliable protection.
The shrink tubing is based on cross-linked polyolefin material, with a measured dielectric strength of 17.5 kV/mm and a volume resistivity of 2.5 × 10¹⁴ Ω·cm, providing ample insulation margin. After 158℃ × 168h of thermal aging, its tensile strength and elongation still exceed the standard lower limit, proving that it maintains a tight fit under long-term temperature rise and thermal cycling conditions, effectively isolating moisture, salt spray, and chemical corrosion.
3. Full specification coverage, strictly adhering to international standards.
Our colored shrink tube is suitable as per UL224, ASTM D2671, and IEC243 standards. The product is available in 2X/3X shrinkage ratio series that are suitable for different applications. The inner diameter of the unshrunk tube ranges from 2.0mm to 180.0mm, with wall thickness tolerances being very accurate and well controllable so that one can choose and use the right kind of shrink tube for wires and terminal sizes. The data quality indices in our products are above what the standard allows which supports the safety testing of domestic and international acceptance for electric distribution systems, industrial machinery, etc.
Applications of Colored Heat Shrink Tubing:
· Electrical grounding equipment: Primarily used for indicating and insulation of protective conductors (PE) and grounding wires in power systems by a set of colors.
· Machinery and control panels of industry may employ this marking for the identification of grounding wires inside machines, conveying systems, and control cabinets, it helps the users make a mistake-free identification of the grounding circuits and provides the ground protection that is tough and not easily broken under complex operating conditions, thus it makes it really easy in carrying out daily checks as well as identifying and solving problems of the machine.
· Ground connection indicators: Can be utilized for insulation wrapping and color-coded marking of grounding conductors connected to the enclosure's metal shell, main grounding busbar, or equipment frame.
About Us:
Originally incorporated in 1986, however, our company's true beginnings go back 40 years since our establishment, through an extensive period of industry experience, we've come to concentrate mainly in developing cable accessories related products. The two main technological foundations of our company lie at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, where our master technologies of radiation cross-linking and silicone vulcanization are carried out. Our products range from heat-shrinkable/cold-shrinkable cables, terminal joints, intermediate splices and up to 220kV voltage levels. Moreover, our R&D team offers custom development services at a flexible pace.
Manufacturing Scale:
Our factory has a total area of a bit over 10,000 square meters, has more than 200 employees, and we have a wide range of equipment. More than 40 machines are installed, among which are the machines for extrusion, molding, injection molding, and there are also multiple continuous production lines. As an illustration, regarding heat-shrink tubing product we have the following machines and quantities: 13 units of plastic extruders, 10 units of oil expanders, and 5 machines of air expanders specifically. The monthly production capacity of such product alone is 5 millions of meters - it means we are able to satisfy large orders in short period of time.
Quality Assurance:
We are ISO 9001:2015 certified (No. 00123Q36311R5M/2200), and comply with CE, RoHS, REACH, and other standards. Each batch of products comes with an independent quality inspection report and a third-party type test report.
Partners:
Our products are exported to the Middle East, Southeast Asia, South America, and the EU. We have supplied nearly one million meters of low-voltage heat shrink tubing to ABB and tens of tons of potting compound to Shell. In the future, we will provide global power engineering projects with full life-cycle protection, from insulation protection to sealed connections, with a more complete product portfolio and more stringent process standards.
Exhibition Activities:
Our company displayed a range of cold and heat shrink tubing products at the 2025 EP Shanghai International Power Exhibition, with products applicable for voltage ratings of 22OkV and below suitable for various applications. This event fully illustrates our capability of providing one-stop service from R&D to production, and it gained us a great deal of trust from all kinds of professional customers around the world and, more so, it helped us strengthen our position as a major player in the power connection safety market.
FAQ:
1. What are the key points to note during the installation of shrink tubing?
It is recommended to use a heat gun or constant temperature oven for even heating, controlling the temperature between 110℃ and 130℃ to avoid localized overheating and scorching of the tubing wall. Before shrinking, clean the conductor surface of any burrs and oil stains to ensure a tight fit without any air bubbles.
2. Does the heat shrink sleeve support non-standard colors?
Yes. In addition to the standard yellow-green two-tone, other color combinations can be customized.
