Copper tubing for air conditioning and refrigeration, also called ACR copper tubing, is commonly used for air conditioning, refrigeration, natural gas, LP gas, and compressed air
These tubes are easily connected using sweating or flare fittings
ACR tubing meets Medical Gas Industry standards and can be used with medical gases
Tubing is cleaned, purged, and pressurized in conformance to ASTM B280
ASTM specifications are permanently marked or incised in blue to distinguish between other copper tube types