JIANGSU CHINA STEEL UNION INDUSTRIAL CO.,LTD.
江苏中钢联合实业有限公司
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Flexible Copper Round Pipe 8mm-22mm OD, 0.5mm Wall, Solar Thermal Energy Systems
flexible copper round pipes (8mm–22mm OD, 0.5mm wall thickness) are engineered for high-efficiency solar thermal energy systems. Designed to withstand extreme temperature fluctuations and UV exposure, these seamless pipes optimize heat transfer in solar collectors, heat pumps, and renewable energy installations. Manufactured from phosphorus-deoxidized copper (Cu-DHP), they combine flexibility for easy installation with corrosion resistance, ensuring long-term reliability in both residential and industrial solar applications.
| Parameter | Details |
|---|---|
| Material | Cu-DHP (Copper ≥99.9%, Phosphorus 0.015–0.04%, Lead ≤0.005%) |
| Standards | EN 1057, ASTM B88, ISO 1337, SOLAR KEYMARK |
| OD Range | 8mm (≈0.31") – 22mm (≈0.87") |
| Wall Thickness | 0.5mm (±0.02mm tolerance) |
| Temper | Soft (Annealed) for superior bendability without kinking |
| Max Temperature | 200°C (392°F) continuous operation |
| Certifications | ISO 9001, SOLAR KEYMARK, RoHS, TÜV SÜD |
| Applications | Solar water heaters, heat pump connections, geothermal loops, parabolic trough systems |
① Solar-Specific Design
Optimized for solar thermal efficiency, our pipes minimize heat loss and maximize energy absorption in collectors.
② Precision Manufacturing
Cold-drawn seamless production ensures uniform wall thickness and smooth surfaces, critical for high-pressure glycol or water circulation.
③ Corrosion Resistance
Cu-DHP material resists scaling and degradation from antifreeze solutions, acidic rainwater, and saline environments.
④ Custom Coil Lengths
Available in coils up to 50 meters for rapid installation in large-scale solar farms or rooftop arrays.
⑤ Global Compliance
SOLAR KEYMARK certification guarantees compliance with EU solar thermal standards, simplifying project approvals.
Why Partner with JIANGSU CHINA STEEL UNION INDUSTRIAL CO., LTD?
We specialize in delivering high-performance copper solutions tailored to renewable energy challenges. Our flexible pipes are trusted by solar engineers and green energy developers to enhance system efficiency, reduce carbon footprints, and withstand decades of demanding operation.
FAQ
1. Who are we?
Our headquarters is located in Jiangsu, China. Since 2010, we have sold to the domestic market (30.00%), North America (10.00%), South America (10.00%), Southeast Asia (10.00%), South Asia (10.00%), and Africa (5.00%) , Middle East (5.00%), Central America (5.00%), Northern Europe (5.00%), Oceania (3.00%), Western Europe (3.00%), Southern Europe (2.00%), Eastern Europe (00.00%), East Asia (00.00%) . There are approximately 11-50 people in our office in total.
2. How do we ensure quality?
There are always pre-production samples before mass production;
Always conduct final inspection before shipment;
3. What can you buy from us?
Copper Alloy Sheet,Copper Round Rod, stainless steel pipe, stainless steel coil, stainless steel strip, wear-resistant plate, galvanized steel plate
4. Why should you buy from us instead of other suppliers?
The company introduces advanced technology and equipment, and its products are exported to Western countries such as the United Kingdom and the United States. It has strong technical force and experienced technical and management personnel.
5. What services can we provide?
Accepted delivery terms: FOB, CFR, CIF, EXW;
Accepted payment currencies: USD;
Accepted payment methods: T/T, L/C, cash;
Languages spoken: English, Chinese