The ASTM B819 air conditioner copper tube is engineered specifically for refrigeration and HVAC applications that require high thermal conductivity, excellent corrosion resistance and long-term system reliability. Manufactured using 99.9% pure copper, each tube offers superior heat transfer efficiency, making it ideal for air conditioning units, condensers, evaporators and refrigeration piping systems.

The copper pipe complies with ASTM B819 and ASTM B280 standards, ensuring high precision in wall thickness, dimensional stability, and consistent performance under high-pressure operating environments. With diameters available in 10mm, 15mm, 16mm, 22mm and 7/8 inch, the tube fits a wide range of domestic, commercial and industrial HVAC systems. The piping can be supplied in both straight lengths and coil formats, offering flexibility for installation and reduced material waste.

Each tube undergoes strict quality processes, including nitrogen charging to protect against oxidation, surface cleaning for contamination-free installation, and high-pressure testing for reliability under real-world conditions. These features make it suitable for connecting copper fittings, valves, split AC units, heat pumps, refrigerators, and central air conditioning pipelines.

Its high corrosion resistance ensures long service life even in humid, chemical or coastal environments. The smooth inner wall minimizes friction loss and improves refrigerant flow efficiency. Additionally, copper tubing is easy to bend, flare and weld, allowing for fast installation and improved construction efficiency.

The product is widely used in residential buildings, office complexes, supermarkets, cold storage rooms, and industrial refrigeration systems. Factory-direct supply ensures competitive pricing, stable inventory, and customizable specifications for OEM and engineering projects. With strong reliability and industry-standard compliance, this copper tube is an ideal choice for professional HVAC and refrigeration installations.