Copper Coils
Copper coils are mainly used in the following fields:
1、 manufacturing transformers, inductors and other equipment, undertaking current conduction and voltage conversion functions, with high conductivity and stability. 2、In the production of circuit boards (PCBs), copper coils are an important component of conductive circuits used for signal transmission and electromagnetic shielding.3、 As an electromagnetic component in equipment such as motors and generators, energy conversion is achieved through electromagnetic induction. 4、Some copper coils are used in the manufacturing of negative electrode materials for lithium-ion batteries, such as electrolytic copper foil, but this application belongs to a specific technical field.
Why choose us
Our Certificate
ISO9001, ISO14001, ISO45001, IATF16949. UL, CMA, SGS.
Sales Market
We export our products to over 20 countries around the world. These include the United States, countries in Europe, and nations in Southeast Asia.
Our service
Before shipment: Laboratory Test and Bulk Inspection.
Copper Coils
Copper Coils are long, continuous strips of copper rolled into coils for ease of transportation, installation, and manufacturing processes. Their flexibility, workability, and excellent conductivity make them essential in applications such as refrigeration lines, air conditioners, transformers, solar panels, and roofing systems.
Copper Coil Properties
|
Product properties |
Internal Control Standards |
||
|
≤10turns |
Copper spikes |
None |
- |
|
Crack |
Total less than 3cm |
- |
|
|
Peel off |
Total less than 3cm |
- |
|
|
Copper powder(mg) |
≤5mg |
≤15mg |
|
|
Turns until torsion(turns) |
Without any bell-shapes or cracks |
≥25 |
|
|
Oxygen content(ppm) |
200-250 |
≤400 |
|
|
Number of flaws detected |
(L) |
≤1 |
- |
|
(M) |
≤3 |
- |
|
|
(S) |
≤30 |
- |
|
|
Number of iron detected |
(L) |
0 |
- |
|
(M) |
0 |
- |
|
|
(S) |
0 |
- |
|
|
Elongation(%) |
≥40 |
≥40 |
|
|
Diameter |
8.0±0.2mm |
8.0±0.4mm |
|
|
Resistance |
≤0.01704 |
≤0.01707 |
|
|
Oxide layers |
<600 |
- |
|
|
Appearance |
Smooth surface,no burr,no impurities or other flaws |
Smooth surface,no burr,no impurities or other flaws |
|
|
Production condition |
Blocks in the furnace |
NVone |
- |
|
Cold copper |
None |
- |
|
|
Stabilitu of copper water temperature |
±5℃ |
- |
|
|
Stability of ingot temperature |
±5℃ |
- |
|
|
Casting condition |
Without significant fiuctuations in the level |
- |
|
|
Others |
Normal and Stable |
- |
|
Key Features
High Electrical and Thermal Conductivity.
Flexible and Easy to Install or Form.
Excellent Resistance to Corrosion, Oxidation, and Moisture.
Available in Pancake, Level Wound, and Jumbo Coils.
Compatible with Soldering, Brazing, and Welding.
Meets ASTM, EN, BIS, and ISO Standards.
Benefits of Copper Coils
Durability
Copper's natural resistance to corrosion ensures that the pipes remain intact and functional for many years. This helps make them a cost-effective long-term solution.
Flexibility
Copper is highly malleable and flexible, making it easy to shape, bend, and install. This reduces labor costs and installation time, especially in tight spaces or complex layouts.
Thermal Efficiency
Copper's excellent thermal conductivity ensures efficient heat transfer, which is critical in HVAC, refrigeration, and heat exchanger systems.
Health and Safety
Copper’s natural antimicrobial properties help reduce the risk of bacterial contamination in water supply systems, promoting safer drinking water.
Eco-Friendly
Copper is 100% recyclable, which adds to its long-term value and sustainability in the market.
Compact
Coils are used to minimize the amount of space needed to store large lengths of tubing.
Weight
|
Thickness (mm) |
Weight per m² (kg) |
Weight per 2 m² (kg) |
Weight per ft² (kg) |
|
0.3 |
2.68 |
5.36 |
0.25 |
|
0.4 |
3.58 |
7.16 |
0.33 |
|
0.5 |
4.47 |
8.94 |
0.42 |
|
0.6 |
5.36 |
10.72 |
0.50 |
|
0.7 |
6.26 |
12.52 |
0.58 |
|
0.8 |
7.15 |
14.30 |
0.66 |
|
0.9 |
8.04 |
16.08 |
0.75 |
|
1.0 |
8.94 |
17.88 |
0.83 |
|
1.2 |
10.73 |
21.46 |
1.00 |
|
1.5 |
13.41 |
26.82 |
1.25 |
|
2.0 |
17.88 |
35.76 |
1.66 |
|
2.5 |
22.35 |
44.70 |
2.08 |
|
3.0 |
26.82 |
53.64 |
2.49 |
|
4.0 |
35.76 |
71.52 |
3.32 |
|
5.0 |
44.70 |
89.40 |
4.15 |
|
6.0 |
53.64 |
107.28 |
4.98 |
Applications
HVAC Systems
Condenser and evaporator coils, refrigerant lines.
Electrical Applications
Transformer windings, grounding, busbar strips.
Solar Panels
Thermal absorber coils and energy conduction loops.
Plumbing Systems
Piping, fittings, expansion loops.
Architecture
Flashings, roofing, decorative coil-based panels.
Manufacturing
Punch-formed washers, stamped components, electrical contacts.
Type K: Has a thick wall that withstands high pressure. Commonly used for cooling/heating, solar, fire protection, domestic water distribution, fuel/oil, compressed air, and natural gas.
Type L: Is thinner than Type K but still durable and used for the same applications.
Type M: Has a thinner wall than Type K & L. Applications include domestic water, fuel/fuel oil, cooling/heating, fire protection, and solar.
DWV: Applications include cooling/heating and solar.
ACR: Used in AC, refrigeration, natural gas, and compressed air applications.
Customization Options
Coil Widths
Choose coil widths tailored to your project requirements, minimizing waste and maximizing efficiency during installation.
Thickness Options
Customize the thickness of copper coils to meet specific structural and performance needs.
FAQ
We're well-known as one of the leading copper coils manufacturers and suppliers in China. Please feel free to wholesale high quality copper coils from our factory. For customized service, contact us now.