| Application: | Insulators |
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| Type: | Insulation Sleeve |
| Chemistry: | Organic Insulation |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
Shanghai Wellco International Limited presents a high-quality insulation protection material suitable for transformer station buses and high/low voltage switch cubicle buses. Our product is made from cross-linked modified polyolefin, ensuring durability and reliability.
The material has a wide operating temperature range of -40ºC to 125ºC, making it suitable for various environments. With a contraction temperature above 70ºC, it provides excellent shrinkage properties. The contraction ratio of 2:5:1 ensures a tight and secure fit.
Our insulation material offers high-voltage resistance, corrosion resistance, and high insulation properties. It effectively prevents accidental short circuit incidents, ensuring the safety of your electrical systems.
By compacting the structure of the switch cubicle and reducing the distance between components, our material helps optimize the overall design and functionality. This feature enhances the efficiency and reliability of your electrical systems.
Choose Shanghai Wellco International Limited for top-quality insulation protection materials that meet the needs of transformer station buses and high/low voltage switch cubicle buses. Trust our expertise and experience to provide you with the best solutions for your electrical insulation requirements.
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Item
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Test method
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Indicator
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Values
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Tensile strength
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ASTM D2671
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≥10MPa
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15.4MPa
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Elongation at break
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ASTM D2671
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≥450%
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583%
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Tensile Strength After Aging
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ASTM D2671/136°C/168h
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≥10MPa
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14.2MPa
|
|
After aging the tensile elongation at break
|
ASTM D2671/136°C/168h
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≥400%
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541%
|
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Thermal Shock
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200°C±3°C/4h
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Without dripping, flowing or crack
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Passed
|
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Low temperature flexibility
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ASTM D2671/-40°C/4h
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No cracking
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No cracking
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Breakdown strength
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ASTM D2671
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≥19kV/mm
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≥25.7kV/mm
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Volume resistivity
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ASTM D876
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≥1.0x1014Ω· cm
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≥5.3x1014Ω· cm
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|
Water absorption
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ASTM D570A
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≤0.5%
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0.23%
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Size
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As supplied
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After recovery
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Packaged Length
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||
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ID/mm
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Wall Thickness/mm
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ID/mm
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Wall Thickness/mm
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M
|
|
|
35KV 30/15
35KV 35/18
35KV 40/20
35KV 50/25
35KV 60/30
35KV 65/33
35KV 70/35
35KV 75/38
35KV 80/40
35KV 100/50
35KV 120/60
35KV 150/75
35KV 180/90
35KV 210/105
35KV 230/115
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30 ± 1.0
35 ± 1.0
40 ± 1.0
50 ± 2.0
60 ± 2.0
65 ± 2.0
70 ± 2.0
75 ± 2.0
80 ± 3.0
100 ± 4.0
120 ± 4.0
150 ± 4.0
185 ± 5.0
210 ± 5.0
230 ± 5.0
|
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
1.9 ± 0.5
|
15
18
20
25
30
33
35
38
40
50
60
75
90
105
115
|
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
4.0 ± 0.3
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15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
|
Shanghai Wellco International Limited is a professional team with 18 years of experience in R&D, production, and sales of special heat shrink tubes and other radiation crosslinking materials. We specialize in providing a wide range of products and solutions for insulation, connection, waterproofing, high temperature resistance, chemical resistance, EMI protection, and mechanical protection for wires and cables.
With strong technical force and advanced production equipment, we offer a variety of heat shrink tubes and insulation tubes made from materials such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, FEP, and PTFE. Our products find extensive applications in electronic communication, automobile, high-speed rail, electric motor, aviation, medical, and other industries. They provide insulation, water-proofing, electrostatic shielding, oil resistance, chemical resistance, and high-temperature protection. Our products have passed UL certification, RoHS, and REACH standards.
In addition to our standard product range, we also offer customization and development of products with special requirements according to customer needs. Our production processes adhere to ISO9001 and IATF16949 quality management system standards, ensuring the stability and reliability of product quality.
Shanghai Wellco International Limited is a professional manufacturer of special heat shrink tubes and other radiation crosslinking insulation materials. With over 20 years of experience in insulation, we are dedicated to providing high-quality products to our customers.
We are based in Shanghai, China and have been operating since 2017. Our products are sold worldwide, with a focus on North America (20.00%), South Asia (20.00%), Southeast Asia (15.00%), Western Europe (15.00%), South America (5.00%), Eastern Europe (5.00%), Mid East (5.00%), Northern Europe (5.00%), Eastern Asia (3.00%), Domestic Market (3.00%), Southern Europe (2.00%), Africa (00.00%), and Central America (00.00%).
We prioritize quality and ensure it through rigorous processes. We always provide a pre-production sample before mass production and conduct a final inspection before shipment.
Our product range includes heat shrink tubes, heat shrink mould parts, marking sleeves, and cold shrink tubes.
When you choose Shanghai Wellco International Limited, you benefit from our expertise and commitment to quality. Our founder has over 20 years of experience in insulation, and our team is dedicated to providing excellent products and services.
We offer flexible delivery terms, including FOB, CFR, CIF, EXW, CIP, FCA, DDP, DDU, and express delivery. We accept payment in USD, EUR, and CNY, and offer various payment methods such as T/T, L/C, MoneyGram, PayPal, and Western Union. Our team is fluent in English, Chinese, and Japanese.
Suppliers with verified business licenses
Audited Supplier 
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