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PVC Coated Copper Tubes
Product Overview
PVC Coated Copper Tubes are engineered for applications that require superior corrosion resistance, electrical insulation, and long-term durability. These tubes combine the mechanical strength and thermal conductivity of high-purity Copper DHP with a robust PVC outer jacket that protects against moisture, chemicals, abrasion, and external environmental impact. The PVC coating prevents electrolytic reactions, reduces condensation, and enhances installation safety, making these tubes ideal for refrigeration lines, air-conditioning systems, medical gas distribution, underground piping, and coastal or industrial environments where exposure risks are high. R V Metal Corporation supplies PVC coated copper tubes in multiple colours, thicknesses, coil/straight forms, and customized specifications to meet global HVAC, refrigeration, and engineering standards.
Technical Specifications
| Parameter | Specification |
|---|---|
| Copper Grade | Cu-DHP (Deoxidized High Phosphorus), C12200 |
| Applicable Standards | ASTM B68 / B75 / B280, EN 1057, JIS H3300 |
| Outer Diameter (OD) | 6.35 mm to 25.4 mm (¼" to 1") |
| Wall Thickness | 0.60 mm to 1.20 mm (as per ASTM B280) |
| PVC Coating Thickness | 0.5 mm to 2.0 mm (Uniform Extruded Coating) |
| PVC Coating Colors | Blue / Black / White / Yellow / Red (UV & Weather Resistant) |
| Temper | Soft Annealed (O60) / Half Hard (H58) |
| Form of Supply | Coils: 15 m / 30 m / 50 m Straight Lengths: 3 m / 6 m |
| Surface Finish | Bright, Smooth, Clean Inner Surface (Free from Carbon Residues) |
| PVC Properties | High Dielectric Strength, Anti-corrosive, UV-Resistant, Impact Resistant |
| Leak Test | 100% Eddy Current & Pressure Tested |
| Application Areas | HVAC, ACR, VRF/VRV Systems, Medical Gas Lines, Industrial Refrigeration |
Chemical Composition
| Element | Cu-DHP (C12200) Specification | Typical Values |
|---|---|---|
| Copper (Cu) | 99.90% min (excluding Ag) | 99.90% – 99.94% |
| Phosphorus (P) | 0.015% – 0.040% | 0.018% – 0.025% |
| Silver (Ag) | 0.001% max | < 0.001% |
| Lead (Pb) | 0.005% max | < 0.003% |
| Iron (Fe) | 0.005% max | < 0.003% |
| Arsenic (As) | 0.005% max | < 0.003% |
| Antimony (Sb) | 0.005% max | < 0.003% |
| Bismuth (Bi) | 0.001% max | < 0.001% |
| Total Impurities | 0.06% max | 0.03% – 0.05% |
UNS Codes & Grades
| Copper Grade | UNS Number | Equivalent Designation | Typical Usage for PVC Coated Tubes |
|---|---|---|---|
| Cu-DHP (Deoxidized High Phosphorus Copper) | C12200 | CW024A (EN) | Refrigeration, AC Lines, Split AC, VRF/VRV, Gas Lines |
| Cu-ETP (Electrolytic Tough Pitch Copper) | C11000 | CW004A (EN) | Suitable when high conductivity is required (less common for PVC coated) |
| Cu-DLP (Deoxidized Low Phosphorus Copper) | C12000 | CW023A (EN) | General engineering copper tubes with PVC jacket |
| PVC Coating Grade | — | ASTM D1784 (Resin Grade) | UV Protection, Insulation, Anti-Corrosion outer sheath |
Mechanical, Physical & Fabrication Properties
| Property Category | Property | Cu-DHP Base Tube Value | PVC Coating Characteristics |
|---|---|---|---|
| Mechanical Properties | Tensile Strength | 220 – 260 MPa (Annealed) 250 – 320 MPa (Drawn) |
Does not affect tensile strength of copper; coating provides surface protection |
| Hardness | 45 – 65 HV (Annealed) 65 – 90 HV (Hard Drawn) |
Coating hardness ~70–90 Shore A (flexible PVC) | |
| Elongation | 30% Min (Annealed) | Coating remains flexible, crack-resistant under bending | |
| Physical Properties | Thermal Conductivity | ≈ 380 W/m·K | Coating adds insulation; reduces outer surface heat loss |
| Electrical Conductivity | ≥ 90% IACS | Non-conductive outer PVC layer | |
| Operating Temperature Range | −40°C to +200°C | −20°C to +80°C (PVC outer sheath) | |
| Fabrication Properties | Bendability | Excellent (suitable for manual & spring bending) | Coating prevents surface scratches during bending |
| Formability | Excellent (annealed tubes) | PVC remains flexible; does not crack on forming | |
| Weldability / Brazing | Excellent brazing weldability | PVC coating must be removed 50–70mm prior to brazing | |
| Corrosion Resistance | Very High (Cu-DHP is inherently corrosion-resistant) | Additional protection against moisture, UV & chemical exposure |
Common Names & International Identifiers
| Category | Common Name | International Identifier / Designation | Description |
|---|---|---|---|
| Copper Base Tube (Cu-DHP) | Deoxidized High Phosphorus Copper Tube | Cu-DHP / CW024A | Standard grade for HVAC, plumbing, refrigeration & medical gas applications. |
| DHP Copper Tube | UNS C12200 | Most widely used copper grade for coated and uncoated tubing. | |
| Phosphorus-Deoxidized Copper | BS EN 1057 | ASTM B68/B75 | International standards commonly applied to DHP copper tubes. | |
| Plain Copper Tube (Soft/Hard) | Type L / Type K (USA) | Referenced in markets using ASTM B280 classifications. | |
| PVC Coated Copper Tube | PVC Coated Copper Tube | — (Coating not assigned UNS) | General name for copper tube with extruded PVC insulation. |
| Insulated Copper Tube | ISO / Industry Designation Only | Used for AC, VRV/VRF & refrigeration line sets. | |
| PVC Sheathed Copper Tube | EN 13349 (Industry Convention) | Refers to PVC protective covering applied on EN 1057 tubes. | |
| Coated Refrigeration Tube | ASTM B280 + PVC Coating | ASTM grade tube supplied with added polymer insulation. |
Standards & International Equivalents
| Region / Standard Body | Standard | Designation | Applicability |
|---|---|---|---|
| International (ISO) | ISO 1635 / ISO 274 | Copper & Copper-Alloy Seamless Tubes | General global standard for seamless copper tubes used for coatings. |
| Europe (EN) | EN 1057 | CW024A (Cu-DHP) | Primary European standard for copper tubes used in plumbing and HVAC; PVC coating applied over this grade. |
| USA (ASTM) | ASTM B68 / ASTM B75 | C12200 | Standard copper tube specification prior to PVC insulation extrusion. |
| USA (HVAC) | ASTM B280 | ACR Copper Tube | Preferred base tube for PVC-coated refrigeration & air-conditioning lines. |
| UK (BS) | BS 2871 | Part 2: C106/CW024A | British copper tube standard for domestic & industrial applications. |
| Japan (JIS) | JIS H3300 | C1220T | Japanese equivalent for Cu-DHP refrigeration & plumbing tubes. |
| International (ISO) | ISO 9001 (Manufacturing) | Quality System Standard | Applied to PVC coating & extrusion process for consistent quality. |
| Europe (EN) | EN 13349 | Plastic-Coated Copper Tube | European reference for copper tubes with polymer protective sheath. |
| USA (UL) | UL 94 | V0 / V1 / HB | Flammability classification for PVC coatings used in electrical-grade piping. |
| RoHS / REACH | EU Directives | Environmental Compliance | Ensures PVC coating is free from hazardous substances. |
Applications
| Application Sector | Use Case | Description |
|---|---|---|
| Air-Conditioning & Refrigeration (ACR) | Suction / Liquid / Discharge Lines | The PVC coating provides abrasion resistance and prevents condensation, making it ideal for ACR line sets. |
| HVAC Systems | Insulated Copper Piping | Used for chilled water and coolant lines where additional protection from corrosion and moisture is required. |
| Cold Storage & Freezer Rooms | Refrigerant Distribution Lines | Provides thermal insulation and prevents frost build-up, enhancing safety and efficiency. |
| Domestic & Commercial Plumbing | Hot & Cold Water Lines | The PVC sheath protects against chemical exposure, soil contact, and UV degradation in exposed installations. |
| Medical Gas Systems | Medical Oxygen & Vacuum Lines | PVC coating ensures external cleanliness and protects pipelines during concealed or wall-embedded installation. |
| Electrical & Instrumentation | Protective Sleeving for Conductive Tubes | PVC insulation prevents accidental electrical contact and reduces surface conductivity risks. |
| Automotive & Transportation | Fuel, Brake & Hydraulic Lines | Coating provides vibration resistance and protects copper from mechanical wear. |
| Solar Thermal Systems | Collector & Header Tubes | PVC-coated copper tubes withstand outdoor environments and resist corrosion in solar heating systems. |
| Industrial Machinery | Lube Oil, Gas & Process Lines | Provides an extra protective barrier for tubes exposed to chemicals, dust, and abrasive environments. |
| Marine & Offshore | Saltwater-Exposed Copper Lines | PVC insulation prevents corrosion from high-salinity environments and mechanical impact. |
Standard Copper Tube Dimensional Chart
Note: PVC Coating is available in multiple colors such as White, Blue, Black, Yellow, Green, and Red. Minimum PVC coating thickness is 1.0 mm. Weight increases due to the PVC jacket, so the theoretical weights shown below include both Copper Tube + PVC Coating.
| Nominal Size | Copper Tube OD (mm) | Copper Wall Thickness (mm) | PVC Coating Thickness (mm) | Final OD with PVC (mm) | Theoretical Weight (kg/m) | Form |
|---|---|---|---|---|---|---|
| 1/4" | 6.35 | 0.80 | 1.00 | 8.35 | 0.110 | 15m / 30m Coils Soft & Hard Coils |
| 5/16" | 7.94 | 0.81 | 1.00 | 9.94 | 0.145 | |
| 3/8" | 9.52 | 0.81 | 1.00 | 11.52 | 0.190 | |
| 1/2" | 12.70 | 0.81 | 1.00 | 14.70 | 0.295 | |
| 5/8" | 15.88 | 0.81 | 1.00 | 17.88 | 0.395 | |
| 3/4" | 19.05 | 0.91 | 1.00 | 21.05 | 0.550 | |
| 7/8" | 22.23 | 1.02 | 1.00 | 24.23 | 0.730 | |
| 1-1/8" | 28.58 | 1.02 | 1.00 | 30.58 | 1.080 | |
| 1-3/8" | 34.93 | 1.14 | 1.00 | 36.93 | 1.530 | |
| 1-5/8" | 41.28 | 1.24 | 1.00 | 43.28 | 2.150 |
