Copper Pipes, Tubes, Coils & Fittings
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Finned Tubes for Heat Exchangers & HVAC Systems
Product Overview
Copper DHP Finned Tubes are engineered for high-efficiency heat transfer in HVAC, refrigeration, condensers, boilers, and industrial cooling systems. Manufactured using premium Deoxidized High Phosphorus (Cu-DHP) copper, these finned tubes offer excellent thermal conductivity, corrosion resistance, and long service life even in demanding temperature and humidity conditions.
At R V Metal Corporation, our finned tubes are produced using precise fin-forming and bonding techniques (L-type, LL-type, G-type, and Extruded) to ensure maximum surface area, uniform heat dissipation, and superior mechanical bonding between the copper tube and aluminum or copper fins. Each tube is manufactured to international heat exchanger standards, ensuring optimum performance in VRF/VRV systems, air-cooled condensers, heat recovery units, and industrial process equipment.
Our Copper DHP finned tubes are available in straight lengths and coils, fully compatible with OEM manufacturing, retrofit projects, and global export requirements. With consistent quality, accurate dimensions, and reliable heat-transfer efficiency, R V Metal Corporation is a trusted partner for OEMs, HVAC contractors, and component manufacturers across India and overseas markets.
Technical Specifications
| Parameter | Specification (Copper DHP – C12200) |
|---|---|
| Base Material | Copper DHP (Deoxidized High Phosphorus) – Cu-DHP / UNS C12200 |
| Copper Purity | ≥ 99.90% Cu |
| Phosphorus Content | 0.015% – 0.040% |
| Tube Outer Diameter (OD) | 6.35 mm to 25.4 mm (1/4” to 1”) |
| Tube Wall Thickness | 0.30 mm to 1.00 mm (depending on fin type) |
| Tube Standards | ASTM B75, ASTM B68, EN 12451, BS 2871 |
| Fin Materials |
Aluminum (AA1100 / AA1050) Copper (C11000) Extruded Copper (same material as tube) |
| Fin Types |
L-Type Fin LL-Type Fin G-Type (Embedded) Fin Extruded Copper Fins |
| Fin Height | 8 mm to 12 mm |
| Fin Density (FPI) | 8 to 14 Fins Per Inch (FPI) |
| Heat Transfer Coefficient | High thermal efficiency due to strong fin-to-tube bonding |
| Bonding Method |
Mechanical locking (L, LL) Embedded bonding (G-Type) Full extrusion (Extruded type) |
| Tube Length | 1 meter to 6 meters (straight) / 15–50 meters (coil) |
| Testing & Inspection |
Eddy Current Testing Fin Adhesion Test Dimensional Tolerance Check Pressure Integrity Test |
| Surface Finish | Clean, bright, oxide-free finish suitable for HVAC & heat exchanger applications |
Chemical Composition
| Element | Composition (%) — Copper DHP (C12200) |
|---|---|
| Copper (Cu) | 99.90% Minimum (Remaining) |
| Phosphorus (P) | 0.015% – 0.040% |
| Arsenic (As) | ≤ 0.05% |
| Lead (Pb) | ≤ 0.005% |
| Iron (Fe) | ≤ 0.005% |
| Bismuth (Bi) | ≤ 0.001% |
| Antimony (Sb) | ≤ 0.005% |
| Total Impurities | ≤ 0.06% |
UNS Codes & Grades
| UNS Code | Grade | Standard Name | Common Application |
|---|---|---|---|
| C12200 | Copper DHP (Deoxidized High Phosphorus) | ASTM B75 / B111 / B359 | Finned tubes for HVAC, heat exchangers & refrigeration coils |
| C12000 | Copper DLP (Deoxidized Low Phosphorus) | ASTM B75 / B359 | Heat exchanger tubes (limited use compared to C12200) |
| C11000 | Copper ETP (Electrolytic Tough Pitch) | ASTM B152 / B359 | Electrical finned tubes & high-conductivity applications |
Mechanical, Physical & Fabrication Properties
| Property Type | Property | Typical Value (Copper DHP – C12200) |
|---|---|---|
| Mechanical Properties | Ultimate Tensile Strength | 200 – 260 MPa (Annealed) / 240 – 310 MPa (Hard) |
| Yield Strength | 60 – 120 MPa (Annealed) | |
| Elongation (50mm Gauge Length) | 30 – 45% (Annealed) | |
| Hardness | 45 – 80 HV (Depending on temper) | |
| Physical Properties | Thermal Conductivity | ~ 340 W/m·K |
| Electrical Conductivity | 85 – 90% IACS | |
| Melting Point | 1083°C | |
| Density | 8.94 g/cm³ | |
| Operating Temperature (Max.) | ~ 250°C (Continuous Service) | |
| Fabrication Properties | Formability | Excellent (Suitable for finning, coiling & bending) |
| Weldability | Excellent — Ideal for brazing, TIG & silver soldering | |
| Solderability | Very Good (Phosphorus acts as natural deoxidizer) | |
| Machinability | Fair (Better than ETP grade) | |
| Corrosion Resistance | High resistance to moisture, industrial & marine atmosphere |
Common Names & International Identifiers
| Category | Identifier / Name | Description |
|---|---|---|
| Common Industry Names | Copper DHP | Deoxidized High Phosphorus Copper used for heat exchangers & finned tubes. |
| C12200 Copper | UNS designation widely used in HVAC, AC tubing and finned tube manufacturing. | |
| Phosphorus Deoxidized Copper | General name for oxygen-free copper with 0.015–0.040% phosphorus. | |
| DHP Copper Tube | Trade name used across refrigeration, condenser and finned tube applications. | |
| International Identifiers | EN CW024A | Equivalent EN European grade used for HVAC, heat transfer coils & finned tubes. |
| ASTM B75 / B359 | ASTM standards governing seamless copper tubes & finned heat exchanger tubes. | |
| ISO Cu-DHP | ISO naming standard for deoxidized high-phosphorus copper. | |
| JIS C1220T | Japanese standard for DHP copper tubes used in heat exchangers & condensers. |
Standards & International Equivalents
| Standard | Designation | Region / Organization | Description / Application |
|---|---|---|---|
| ASTM B359 | Seamless Copper Finned Tube | ASTM (USA) | Primary international standard for copper finned tubes used in heat exchangers. |
| ASTM B75 | C12200 | ASTM (USA) | Specifies seamless copper tubes including DHP grade for HVAC/ACR applications. |
| EN 12451 | CW024A | EN / Europe | Defines tubes for condensers & heat exchangers; includes DHP copper tubes. |
| ISO 1635 | Cu-DHP | ISO (International) | International naming convention for deoxidized high-phosphorus copper. |
| JIS H3300 | C1220T | Japan | Japanese standard for DHP copper tubes used in heat transfer and finned applications. |
| BS 2871 | C106 | British Standard | Equivalent DHP grade used for general engineering and heat exchanger tubes. |
| IS 2501 / IS 2507 | Cu-DHP | Indian Standard | Indian specifications for copper tubes used in industrial and HVAC duties. |
| DIN 1786 | Cu-DHP | DIN (Germany) | Defines mechanical & chemical requirements for heat transfer copper tubes. |
Applications
| Application Category | Specific Use | Description / Purpose |
|---|---|---|
| HVAC & Refrigeration Systems | Condensers, Evaporators, Heat Pumps | Improves thermal transfer efficiency and reduces system load in air-conditioning and refrigeration units. |
| Heat Exchanger Assemblies | Shell & Tube, Air-Cooled Heat Exchangers | Used for high-efficiency heat rejection and thermal balancing in industrial process cooling. |
| Power Generation | Cooling Towers, Generator Cooling Loops | Enhances heat dissipation in turbines, generators, and auxiliary cooling systems. |
| Automotive & Heavy Vehicles | Radiators, Charge-Air Coolers | Provides better heat rejection to maintain performance in high-load engine systems. |
| Industrial Processing | Oil Coolers, Chemical Processing Heaters | Ensures stable temperature control in continuous industrial production lines. |
| Solar Thermal Panels | Absorber Tubes, Thermal Collectors | Used for efficient heat absorption and transfer in solar water heating systems. |
| Desalination Systems | Brine Heaters, Evaporator Coils | Handles salt-rich environments while providing corrosion-resistant heat transfer. |
| Air Handling Units (AHUs) | Cooling & Heating Coils | Used for improved airflow cooling/heating performance in large air distribution systems. |
| Food & Pharmaceutical Industry | Sanitary Heat Exchangers | Maintains hygiene and efficient temperature control for sensitive processing environments. |
Standard Copper Tube Dimensional Chart
Carbon Steel Fins – Standard Size Chart
| Tube OD (in) | Fin Height (in) | Fin Thickness (in) | Fins Per Inch (FPI) |
|---|---|---|---|
| 3/8 | 1/4 | .015 | 4–10 |
| 1/2 | 1/4 | .015 | 4–10 |
| 3/8 | .015 | 4–10 | |
| 5/8 | 1/4 | .015 | 4–10 |
| 3/8 | .015 | 4–10 | |
| 3/4 | 1/4 | .015 | 4–10 |
| 3/8 | .015 | 4–10 | |
| 1/2 | .030 | 4–8 | |
| 1 | 1/4 | .015 | 4–10 |
| 3/8 | .015 | 4–10 | |
| 1/2 | .030 | 4–8 | |
| 5/8 | .030 | 2–6 | |
| 1 1/4 | 3/8 | .015 | 4–10 |
| 1/2 | .030 | 4–8 | |
| 5/8 | .030 | 2–6 | |
| 1 1/2 | 1/2 | .030 | 2–8 |
| 5/8 | .030 | 2–6 | |
| 3/4 | .040 | 2–6 | |
| 1 3/4 | 5/8 | .040 | 2–6 |
| 3/4 | .040 | 2–6 | |
| 2 | 3/4 | .040 | 2–6 |
| 1 | .040 | 2–6 |
Copper Fins (on Copper / Stainless Steel Tubes)
| Tube OD (in) | Fin Height (in) | Fin Thickness (in) | FPI |
|---|---|---|---|
| 1/4 | 3/16 | .015 | 4–18 |
| 3/8 | 3/16 | .015 | 4–18 |
| 1/4 | .015 | 4–16 | |
| 1/2 | 3/16 | .015 | 4–18 |
| 1/4 | .015 | 4–16 | |
| 3/8 | .015 | 4–14 | |
| 5/8 | 3/16 | .015 | 4–18 |
| 1/4 | .015 | 4–16 | |
| 3/8 | .015 | 2–18 | |
| 1/2 | .020 | 4–10 | |
| 3/4 | 1/4 | .015 | 4–16 |
| 3/8 | .015 | 2–16 | |
| 1/2 | .020 | 4–10 | |
| 1 | 1/4 | .015 | 4–14 |
| 3/8 | .015 | 2–20 | |
| 1/2 | .020 | 4–10 | |
| 5/8 | .020 | 4–10 | |
| 1 1/4 | 3/8 | .015 | 4–12 |
| 1/2 | .020 | 4–10 | |
| 5/8 | .020 | 4–10 | |
| 1 1/2 | 3/8 | .015 | 4–12 |
| 1/2 | .020 | 4–10 | |
| 5/8 | .020 | 4–10 | |
| 3/4 | .030 | 4–8 | |
| 1 3/4 | 5/8 | .020 | 4–8 |
| 3/4 | .030 | 4–8 | |
| 2 | 3/4 | .030 | 4–8 |
| 1 | .030 | 3–7 |
Stainless Steel Fins (on Stainless Steel Tubes)
| Tube OD (in) | Fin Height (in) | Fin Thickness (in) | FPI |
|---|---|---|---|
| 1/4 | 3/16 | .015 | 4–10 |
| 3/8 | 3/16 | .015 | 4–10 |
| 1/4 | .015 | 4–10 | |
| 1/2 | 3/16 | .015 | 4–10 |
| 1/4 | .020 | 4–10 | |
| 3/8 | .020 | 4–10 | |
| 5/8 | 3/16 | .020 | 4–10 |
| 5/8 | 1/4 | .020 | 4–10 |
| 5/8 | 3/8 | .020 | 4–10 |
| 3/4 | 3/16 | .015 | 4–10 |
| 1/4 | .020 | 4–10 | |
| 3/8 | .020 | 4–10 | |
| 1/2 | .020 | 2–6 | |
| 1 | 1/4 | .020 | 4–10 |
| 3/8 | .020 | 4–10 | |
| 1/2 | .020 | 2–8 | |
| 5/8 | .030 | 2–6 | |
| 1 1/4 | 3/8 | .020 | 4–10 |
| 1/2 | .020 | 2–8 | |
| 5/8 | .020 | 2–6 | |
| 1 1/2 | 1/2 | .020 | 2–6 |
| 5/8 | .020 | 2–6 | |
| 3/4 | .020 | 2–6 | |
| 1 3/4 | 5/8 | .020 | 2–6 |
| 3/4 | .020 | 2–6 | |
| 2 | 3/4 | .020 | 2–6 |
Aluminium Fins – Standard Size Chart
| Tube OD (in) | Fin Height (in) | Fin Thickness (in) | FPI |
|---|---|---|---|
| 1/4 | 3/16 | .015 | 4–18 |
| 3/8 | 3/16 | .015 | 4–18 |
| 1/4 | .015 | 4–16 | |
| 1/2 | 3/16 | .015 | 4–18 |
| 1/4 | .015 | 4–16 | |
| 3/8 | .015 | 4–14 | |
| 5/8 | 3/16 | .015 | 4–18 |
| 5/8 | 1/4 | .015 | 4–16 |
| 5/8 | 3/8 | .015 | 4–12 |
| 5/8 | 1/2 | .020 | 4–10 |
| 3/4 | 1/4 | .015 | 4–16 |
| 3/8 | .015 | 4–12 | |
| 1/2 | .020 | 4–10 | |
| 1 | 1/4 | .015 | 4–14 |
| 3/8 | .015 | 4–12 | |
| 1/2 | .020 | 4–10 | |
| 5/8 | .020 | 4–10 | |
| 1 1/4 | 3/8 | .015 | 4–12 |
| 1/2 | .020 | 4–10 | |
| 5/8 | .020 | 4–10 | |
| 1 1/2 | 3/8 | .015 | 4–12 |
| 1/2 | .020 | 4–10 | |
| 5/8 | .020 | 4–10 | |
| 3/4 | .030 | 4–8 | |
| 1 3/4 | 5/8 | .020 | 4–8 |
| 3/4 | .030 | 4–8 | |
| 2 | 3/4 | .030 | 4–8 |
| 1 | .030 | 3–7 |
