Copper Tube Applications
Copper tubing is rust proof, easy to bend, and forms good joints. It is used in many low pressure applications such as the cooling system, the heating system, and sanitary installation, but also in the air-conditioning system, which has a higher rated pressure.
Tube sizes are metric or inch, ranging from 3 mm/0.118 inch O.D. to 70 mm/2 3/4 inch O.D. with a choice of wall thicknesses. Sizes may be noted as O.D. x wall thickness (in mm or inch) or as O.D x I.D. (in mm or inch). Tubes come as coils or in 5m/16 ft standard lengths. Copper is subject to work hardening (material becoming hard and brittle from bending). Therefore it should be protected from excessive vibra- tion. Never use copper tubing for brake or power steering work.