Plastic Coated Copper Oil Pipe for Industrial Applications
Plastic coated copper oil pipe is engineered for safe and reliable transportation of lubricating oils, hydraulic oils and compressor oils in industrial, HVAC and mechanical systems. The copper core provides excellent pressure resistance and cleanliness, while the external plastic coating protects the pipe from corrosion, moisture and mechanical damage.
In demanding industrial environments, plastic coated copper oil pipe ensures long service life, leak-free operation and clean oil delivery.
What is Plastic Coated Copper Oil Pipe?
Plastic coated copper oil pipe refers to seamless copper tubing specifically selected for oil service and covered with a PVC or polymer-based coating. The copper pipe safely conveys oil under pressure, while the coating acts as a protective barrier against external environmental exposure.
These pipes are supplied in straight lengths or coils depending on routing and installation needs.
Why Use Plastic Coated Copper Oil Pipe?
Oil piping systems require cleanliness, durability and resistance to contamination. Bare copper pipes may be affected by moisture, chemicals or physical damage. Plastic coated copper oil pipe minimizes these risks by protecting the copper surface while maintaining excellent internal cleanliness.
Key Advantages of Plastic Coated Copper Oil Pipe
- High resistance to external corrosion
- Excellent compatibility with lubricating oils
- Protection against mechanical damage
- Clean and smooth internal bore
- Long service life with minimal maintenance
Copper Grades Used in Plastic Coated Copper Oil Pipe
Plastic coated copper oil pipe is manufactured using high-purity copper grades:
- C12200 – Phosphorus-deoxidized copper
- C10200 – Oxygen-free copper (for critical systems)
These grades ensure excellent corrosion resistance, oil compatibility and reliable jointing performance.
Applicable Standards for Plastic Coated Copper Oil Pipe
Depending on application, copper oil pipes with plastic coating may comply with:
- ASTM B88 – Seamless copper tube
- ASTM B280 – Copper tubing for refrigeration and oil return lines
- EN 1057 – Copper tubes for fluid transport
- EN 12735 – Copper tubes for refrigeration systems
Plastic coating specifications are defined based on operating environment and customer requirements.
Sizes Available for Plastic Coated Copper Oil Pipe
| Nominal Size | Outside Diameter (mm) | Typical Application |
|---|---|---|
| 1/4 inch | 6.35 | Oil return lines |
| 3/8 inch | 9.52 | Compressor lubrication |
| 1/2 inch | 15.88 | Hydraulic oil circuits |
| 3/4 inch | 22.23 | Industrial oil distribution |
Plastic Coating Characteristics of Plastic Coated Copper Oil Pipe
The plastic coating used on plastic coated copper oil pipe is flexible, oil-resistant and impact-resistant. It prevents external corrosion and protects the pipe when installed near machinery, concrete or structural steel.
Color-coded coatings may be used for easy identification of oil lines.
Manufacturing Process of Plastic Coated Copper Oil Pipe
Plastic coated copper oil pipe is produced by seamless extrusion and cold drawing of copper tubing. After cleaning and inspection, the plastic coating is applied using controlled extrusion or dip-coating methods to ensure uniform coverage and strong adhesion.
Joining Methods for Plastic Coated Copper Oil Pipe
Approved joining methods include:
- Brazing
- Compression fittings
- Flared joints
Only the required section of coating is removed at joints to maintain overall protection.
Applications of Plastic Coated Copper Oil Pipe
HVAC & Refrigeration
- Compressor oil return lines
- Lubrication circuits
Industrial Systems
- Hydraulic oil lines
- Machinery lubrication systems
Power & Process Industries
- Oil supply and distribution
- Control and instrumentation oil lines
Quality Control for Plastic Coated Copper Oil Pipe
Manufacturers perform strict quality checks on plastic coated copper oil pipe including chemical analysis, dimensional inspection, eddy current testing, coating adhesion verification and pressure testing.
Conclusion
Plastic coated copper oil pipe offers an optimal combination of copper’s strength and cleanliness with the added protection of plastic coating. Its durability, oil compatibility and corrosion resistance make it ideal for industrial oil and lubrication systems.
When manufactured to recognized standards and installed correctly, plastic coated copper oil pipe ensures long-term, reliable and contamination-free oil transport.