Copper Pipes, Tubes, Coils & Fittings
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Copper Pancake Coils for ACR & HVAC Applications
Product Overview
Copper Pancake Coils supplied by R V Metal Corporation are manufactured from high-purity Copper DHP (Deoxidized High Phosphorus) grade, ensuring exceptional thermal conductivity, corrosion resistance, and long-term reliability. These coils are widely used in ACR, HVAC, refrigeration, capillary tube assemblies, split AC installations, and other compact copper piping systems where flexibility and ease of installation are essential. Each pancake coil is seamless, precisely drawn, round, and pressure-rated to meet key international standards such as ASTM B280, EN 12735-1, JIS H3300, and equivalent global specifications. The coils exhibit high formability, smooth internal surfaces, and uniform wall thickness, ensuring superior refrigerant flow and reduced system losses. Available in standard and customized lengths—with optional PVC coating—these coils are compatible with R410A, R32, R22, and all modern refrigerants. R V Metal Corporation offers Copper Pancake Coils in a wide range of diameters, tempers (soft annealed O60), and packaging options, making them ideal for OEMs, installers, contractors, and global HVAC&R manufacturers seeking premium-quality copper solutions for efficient and durable system performance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material Grade | Copper DHP (C12200) |
| Manufacturing Standard | ASTM B280, EN 12735-1, JIS H3300 |
| Temper | Soft Annealed (O60) |
| Type | Seamless Copper Pancake Coil |
| Outer Diameter Range | 1/8" to 3/4" (4.76 mm to 19.05 mm) |
| Wall Thickness Range | 0.30 mm to 1.20 mm (as per ASTM B280 / EN 12735-1) |
| Length per Coil | 15 m, 30 m, 50 m, 100 m (custom lengths available) |
| Surface Finish | Bright, Clean, Degreased |
| Internal Cleanliness | Dry, Oxygen-Free, Suitable for Refrigerants R410A, R32, R22, etc. |
| Pressure Rating | Suitable for high-pressure HVAC systems (meets ASTM B280 burst requirements) |
| End Sealing | Both ends capped and nitrogen-charged |
| Coil Form | Pancake / Roll Form for easy installation |
| PVC Coating (Optional) | Available in multiple colours, min. thickness 1.0 mm |
| Applications | HVAC, Refrigeration, Split AC, Capillary Systems, Heat Pumps |
Chemical Composition
| Element | Specified Range | Typical Values |
|---|---|---|
| Copper (Cu) | 99.90% min | 99.90–99.95% |
| Phosphorus (P) | 0.015% – 0.040% | 0.018–0.025% |
| Oxygen (O) | Deoxidized (Residual O₂ ≤ 0.02%) | < 0.01% |
| Other Impurities | 0.03% max (combined) | < 0.02% |
| Grade Standard | ASTM B280 / C12200 (DHP Copper) | Meets Fully |
UNS Codes & Grades
| Grade | UNS Code | Standard Name | Description / Notes |
|---|---|---|---|
| Copper DHP | C12200 | Deoxidized High Phosphorus Copper | Most widely used grade for Pancake Coils due to high formability & excellent brazing properties. |
| Copper DLP | C12000 | Deoxidized Low Phosphorus Copper | Used occasionally but less preferred for ACR/HVAC and Pancake Coil applications. |
| Copper ETP | C11000 | Electrolytic Tough Pitch Copper | High conductivity; not commonly used for coils requiring brazing due to oxygen content. |
| Applicable Standard | — | ASTM B280 | Defines requirements for ACR-grade seamless copper coils including pancake & level-wound coils. |
Mechanical, Physical & Fabrication Properties
| Property Category | Property | Typical Value | Remarks |
|---|---|---|---|
| Mechanical Properties | Tensile Strength | 210–250 MPa (Annealed) | Suitable for bending, coiling & flare-type joints. |
| Yield Strength | 50–90 MPa | Low yield strength enables easy forming in pancake coil applications. | |
| Elongation | ≥ 40% | High ductility supports smooth coil formation without cracking. | |
| Hardness | 45–65 HV (Annealed) | Soft annealed temper is standard for Pancake Coils. | |
| Physical Properties | Density | 8.94 g/cm³ | Used for precise weight calculation of coil lengths. |
| Electrical Conductivity | ≥ 85% IACS | Ideal for heat transfer and refrigeration performance. | |
| Thermal Conductivity | ≈ 385 W/m·K | High thermal conductivity enhances heat exchange efficiency. | |
| Melting Point | 1083°C | Stable under high-temperature brazing operations. | |
| Coefficient of Thermal Expansion | 16.7 × 10⁻⁶ /°C | Important for HVAC system thermal cycling performance. | |
| Fabrication Properties | Brazability | Excellent | Phosphorus content ensures oxide-free brazing. |
| Formability | Excellent (Annealed Temper O60) | Allows tight-radius bends without collapse. | |
| Weldability | Good | Suitable for capillary brazing & silver soldering. | |
| Corrosion Resistance | High | Resistant to HVAC refrigerants, moisture & atmospheric corrosion. |
Common Names & International Identifiers
| Identifier Type | Designation | Description / Usage |
|---|---|---|
| Common Product Name | Copper Pancake Coil | Soft-annealed copper tubing supplied in compact, coiled form for HVAC & refrigeration applications. |
| Alternate Name | Pancake Copper Tube | Widely used term in the air-conditioning and refrigeration industry. |
| Industry Short Code | LWC (Level Wound Coil – when specified as multi-layer) | Used when Pancake Coils are supplied in layered continuous winding. |
| Material Grade Identifier | DHP Copper (C12200) | Deoxidized High Phosphorus copper, standard for HVAC brazing applications. |
| UNS Designation | C12200 | Global reference code for DHP grade copper used in soft-annealed coils. |
| ISO Equivalent | Cu-DHP | International designation used in ISO & EN standards. |
| EN Standard Identifier | CW024A | European material code for DHP copper tubes used in refrigeration coils. |
| JIS Identifier | C1220T | Japanese designation for copper tubes intended for HVAC coil production. |
| ASTM Specification Name | ASTM B280 Copper Tube (ACR) | Industry-standard designation for refrigeration-grade pancake coils. |
| Commercial Name | Refrigeration Coil / ACR Coil | Used by contractors and OEMs for AC & refrigeration services. |
Standards & International Equivalents
| Standard / Region | Code / Designation | Description / Relevance |
|---|---|---|
| ASTM (USA) | ASTM B280 | Primary standard for ACR (Air Conditioning & Refrigeration) copper tubes, applicable for Pancake Coils. |
| ASTM (USA) | ASTM B75 / B75M | Standard for seamless copper tubes used in heat transfer, suitable for coil manufacturing. |
| EN (Europe) | EN 12735-1 | European standard specifically for copper tubes used in refrigeration and air-conditioning systems. |
| EN (Europe) | EN 1057 | Standard for copper tubes for water & gas applications; material equivalence applies to DHP grades. |
| ISO (International) | ISO 1635 / ISO Cu-DHP | Defines chemical composition & mechanical properties for Cu-DHP copper used in coils. |
| UNS (Global) | C12200 | Universal designation for Deoxidized High Phosphorus Copper used in Pancake Coils. |
| European Material Code | CW024A | EN material designation equivalent to DHP Copper (C12200). |
| JIS (Japan) | C1220T | Japanese industrial standard for DHP copper tubes used in HVAC coil applications. |
| British Standard | BS EN 12735-1 | British adaptation of EN standard for refrigeration-grade copper coils. |
| Indian Standard | IS 10773 | Indian standard for copper tubes for refrigeration & air-conditioning applications. |
Applications
| Application Segment | Usage Description |
|---|---|
| Air Conditioning Systems (ACR) | Used for refrigerant flow in split ACs, window ACs, ducted ACs, and advanced VRF/VRV systems. Ensures high thermal conductivity and leak-proof operation. |
| Refrigeration Systems | Widely used in deep freezers, cold rooms, display chillers, ice machines, and refrigerated transport due to excellent pressure and temperature tolerance. |
| Heat Pumps | Serves as refrigerant circulation tubing in domestic and industrial heat pump units requiring corrosion resistance and flexibility. |
| Water Dispensers & Cooling Machines | Used in condenser and evaporator circuits for smooth flow and efficient cooling in commercial dispensers and coolers. |
| Automotive HVAC Systems | Applied in car, bus, and heavy-vehicle AC lines for stable thermal transfer and strong vibration resistance. |
| Refrigerant Charging & Repair Lines | Flexible Pancake Coils are preferred for installation, field service, maintenance, and refrigerant charging purposes. |
| Coils for Condensers & Evaporators | Ideal for finned coils, micro-channel systems, and HVAC heat exchanger components. |
| Solar Thermal Heating Systems | Used for heat transfer piping in water heating panels and thermal collector assemblies. |
| General Engineering Applications | Used in fluid, gas, and pressure transport lines where high conductivity and formability are required. |
Standard Copper Tube Dimensional Chart
| Standard Copper Pancake Coils – Dimensional & Theoretical Weight Chart | |||
|---|---|---|---|
| Outer Diameter (mm / inch) | Available Wall Thickness (mm) | Typical Coil Length | Theoretical Weight (kg/m) |
| 4.76 mm (3/16") | 0.46, 0.51, 0.56, 0.61, 0.66, 0.71 | 15 m / 30 m | 0.065 – 0.090 |
| 6.35 mm (1/4") | 0.41, 0.46, 0.51, 0.56, 0.61, 0.66, 0.71 | 15 m / 30 m | 0.090 – 0.130 |
| 7.94 mm (5/16") | 0.51, 0.56, 0.61, 0.66, 0.71 | 15 m / 30 m | 0.120 – 0.165 |
| 9.52 mm (3/8") | 0.41, 0.51, 0.56, 0.61, 0.66, 0.71, 0.76 | 15 m / 30 m | 0.160 – 0.240 |
| 12.70 mm (1/2") | 0.41, 0.46, 0.51, 0.56, 0.61, 0.66, 0.71, 0.81 | 15 m / 30 m | 0.260 – 0.380 |
| 15.88 mm (5/8") | 0.41, 0.51, 0.56, 0.61, 0.66, 0.71, 0.81, 0.91 | 15 m / 30 m | 0.360 – 0.520 |
| 19.05 mm (3/4") | 0.51, 0.56, 0.61, 0.66, 0.71, 0.81, 0.91, 1.00 | 15 m / 30 m | 0.480 – 0.700 |
| 22.22 mm (7/8") | 0.56, 0.61, 0.66, 0.71, 0.81, 0.91, 1.00 | 15 m / 30 m | 0.600 – 0.880 |
| Copper Pancake Coils – Wall Thickness Selection Chart | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outer Diameter (mm) | Inch | Wall Thickness (mm) | |||||||||||
| 0.41 | 0.46 | 0.51 | 0.56 | 0.61 | 0.66 | 0.71 | 0.76 | 0.81 | 0.91 | 1.00 | |||
| 4.76 | 3/16" | ● | ● | ● | ● | ● | ● | ||||||
| 6.35 | 1/4" | ● | ● | ● | ● | ● | ● | ● | |||||
| 7.94 | 5/16" | ● | ● | ● | ● | ● | |||||||
| 9.52 | 3/8" | ● | ● | ● | ● | ● | ● | ● | |||||
| 12.70 | 1/2" | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| 15.88 | 5/8" | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| 19.05 | 3/4" | ● | ● | ● | ● | ● | ● | ● | |||||
| 22.22 | 7/8" | ● | ● | ● | ● | ● | ● | ● | |||||
| VRV / VRF Copper Coil – Dimensional & Performance Chart | |||||||
|---|---|---|---|---|---|---|---|
| Size (mm) | Size (inch) | Wall Thickness (mm) | Length | Weight (kg/m) | Max Working Pressure (MPa) | Burst Pressure (MPa) | Temper |
| 6.4 | 1/4" | 0.80 | 50 ft | 0.57 | 13.8 | 68.3 | O-Coil Soft |
| 9.5 | 3/8" | 0.80 | 50 ft | 0.89 | 8.4 | 41.5 | O-Coil Soft |
| 12.7 | 1/2" | 0.80 | 50 ft | 1.20 | 6.5 | 29.5 | O-Coil Soft |
| 15.9 | 5/8" | 0.80 | 50 ft | 1.60 | 5.0 | 25.0 | O-Coil Soft |
| 19.1 | 3/4" | 0.80 | 10 ft | 1.24 | 12.5 | 22.9 | ½-Hard |
| 22.2 | 7/8" | 0.80 | 10 ft | 1.46 | 10.0 | 19.6 | ½-Hard |
| 28.6 | 1-1/8" | 1.00 | 10 ft | 2.33 | 10.3 | 18.8 | ½-Hard |
| 31.8 | 1-1/4" | 1.00 | 10 ft | 2.88 | 10.2 | 18.6 | ½-Hard |
| 34.9 | 1-3/8" | 1.21 | 10 ft | 3.48 | 10.2 | 18.6 | ½-Hard |
| 38.1 | 1-1/2" | 1.21 | 10 ft | 4.02 | 10.2 | 18.6 | ½-Hard |
| 41.3 | 1-5/8" | 1.43 | 10 ft | 4.48 | 10.2 | 18.6 | ½-Hard |
