Level Wound and Pancake Copper Coils – Essential Forms for Efficient Installation
Level wound coils (LWC) and pancake coils (PCC) represent two of the most important product forms in the copper tube industry, enabling efficient installation across HVAC, refrigeration, plumbing, and industrial applications. These coiled formats offer significant advantages over straight lengths, including reduced joints, faster installation, and minimized material waste. From air conditioner installation kits to large-scale industrial projects, copper coils are essential for modern construction and maintenance.
Understanding Copper Coil Formats
Level Wound Coils (LWC)
Level wound coils are manufactured with layers of tube wound precisely on top of each other, creating a compact, stable coil that can be unwound smoothly during installation. This format is ideal for long runs of tubing where minimizing joints is critical.
Pancake Coils (PCC)
Pancake coils are spiral wound coils typically supplied in standard lengths of 50 feet or 100 feet. They are widely used as connecting kits for air conditioner installation and in projects and industrial applications. Pancake coils are available in various weights ranging from 80 kg to 500 kg.
Advantages of Coiled Copper Tubes
Reduced Joints
Coiled tubes eliminate the need for multiple joints, reducing potential leak points and installation time.
Faster Installation
The ability to uncoil and route tubing continuously speeds installation compared to joining multiple straight lengths.
Reduced Material Waste
Coiled formats minimize off-cuts and waste, improving material efficiency.
Versatility
Coils are available in a wide range of diameters (4 mm to 25.4 mm) and wall thicknesses (from 0.27 mm onwards), suitable for diverse applications.
Level Wound Coil Applications
HVAC and Refrigeration Systems
Level wound coils are widely used for refrigerant lines in air conditioning and refrigeration systems. Jintian produces copper tubes including pancake coils, straight copper pipes, level wound coils, and inner grooved tubes for air conditioning and refrigeration.
Plumbing Installations
Long runs of plumbing pipe can be efficiently installed from level wound coils.
Industrial Projects
Large-scale industrial installations benefit from the efficiency of level wound coils.
Pancake Coil Applications
Air Conditioner Installation
Pancake coils are used as connecting kits for air conditioner installation, providing the flexibility needed for outdoor unit connections.
Projects and Industrial Applications
Pancake coils are widely used in projects and industrial applications.
Refrigeration Systems
Pancake coils are essential for refrigeration system installation and maintenance.
Coil Specifications and Standards
| Specification | Details |
|---|---|
| Outer Diameter | 4 mm to 25.4 mm |
| Wall Thickness | From 0.27 mm onwards |
| Coil Weight | 80 kg to 500 kg |
| Standards | ASTM B280, EN1057, JIS H3300 |
Manufacturing and Quality
Copper coils are manufactured according to international standards including ASTM B280, EN1057, and JIS H3300. Leading manufacturers produce coils with consistent quality, ensuring reliable performance in demanding applications.
Future Outlook
Level wound and pancake copper coils are expected to remain essential product forms for the copper tube industry as installation efficiency becomes increasingly important in construction and maintenance. The growing demand for air conditioning systems and refrigeration equipment will continue to drive demand for high-quality copper coils.
