22mm PVC Coated Copper Pipe for Protected Piping Systems
22mm PVC coated copper pipe is a medium-diameter copper piping solution widely used in plumbing, gas distribution and HVAC systems where higher flow capacity and enhanced external protection are required. The PVC coating shields the copper surface from corrosion, cement contact, moisture and mechanical damage, while the copper core provides excellent pressure strength and durability.
In residential, commercial and light industrial projects, 22mm PVC coated copper pipe is commonly selected for concealed installations, risers and service mains.
What is 22mm PVC Coated Copper Pipe?
22mm PVC coated copper pipe refers to seamless copper tubing with an outer diameter of 22 mm, uniformly coated with a polyvinyl chloride (PVC) layer. The copper tube transports water, gas or fluids, while the PVC coating provides long-term external protection.
This construction ensures reliability without affecting internal flow or jointing performance.
Why Use 22mm PVC Coated Copper Pipe?
Bare copper pipes may be vulnerable to corrosion when installed in concrete, masonry or damp environments. 22mm PVC coated copper pipe prevents direct contact between copper and aggressive surroundings, making it ideal for modern building services.
Key Advantages of 22mm PVC Coated Copper Pipe
- Excellent resistance to external corrosion
- Protection from cement, lime and moisture
- Improved durability in concealed installations
- Higher flow capacity compared to smaller sizes
- Long service life with minimal maintenance
Copper Grades Used in 22mm PVC Coated Copper Pipe
22mm PVC coated copper pipe is manufactured using high-quality copper grades:
- C12200 – Phosphorus-deoxidized copper
- C10200 – Oxygen-free copper (optional)
These grades provide excellent corrosion resistance, formability and joint integrity.
Standards Applicable to 22mm PVC Coated Copper Pipe
The copper tube used in 22mm PVC coated copper pipe generally complies with:
- ASTM B88 – Seamless copper tube for water and gas
- ASTM B280 – Copper tubing for refrigeration and gas
- EN 1057 – Copper tubes for water and gas
- IS 1545 – Copper tubes for plumbing and gas
Dimensions of 22mm PVC Coated Copper Pipe
| Parameter | Specification |
|---|---|
| Outside Diameter | 22 mm |
| Supply Form | Straight lengths or coils |
| Wall Thickness | As per standard (Type K / L equivalent) |
| Coating Type | PVC coating |
PVC Coating Characteristics
The PVC coating applied on 22mm PVC coated copper pipe is flexible, abrasion-resistant and chemically stable. It prevents moisture ingress and protects the pipe during installation and long-term service.
Manufacturing Process of 22mm PVC Coated Copper Pipe
22mm PVC coated copper pipe is manufactured through seamless extrusion and cold drawing of copper tubes. After thorough cleaning and inspection, the PVC coating is applied using extrusion or dip-coating methods to ensure uniform thickness and strong adhesion.
Installation Guidelines for 22mm PVC Coated Copper Pipe
During installation, the PVC coating should remain intact except at joint locations. Only minimal coating is removed for brazing, flaring or compression fittings, and protective sleeves or tapes are recommended after jointing.
Applications of 22mm PVC Coated Copper Pipe
Plumbing Systems
- Main hot and cold water distribution
- Commercial plumbing installations
Gas Installations
- LPG and propane gas lines
- Domestic and commercial gas piping
HVAC & Utilities
- Utility service lines
- Building infrastructure piping
Quality Control for 22mm PVC Coated Copper Pipe
Manufacturers perform strict quality control on 22mm PVC coated copper pipe, including chemical analysis, dimensional inspection, eddy current testing and coating adhesion verification to ensure long-term performance.
Conclusion
22mm PVC coated copper pipe offers an excellent balance of flow capacity, strength and external protection. Its corrosion resistance and durability make it a preferred choice for plumbing, gas and HVAC installations.
When manufactured to recognized standards and installed correctly, 22mm PVC coated copper pipe delivers reliable performance, extended service life and enhanced system safety.