Historical
DIN EN 12735-1:2005
Copper and copper alloys - Seamless, round copper tubes for air conditioning and refrigeration - Part 1: Tubes for piping systems (Foreign Standard)
This European Standard specifies the requirements, sampling, test methods and conditions of delivery for seamless round copper tubes used for refrigeration and air-conditioning piping systems (i.e. piping, connections, repairs). These tubes are supplied in straight lengths in the hard or half-hard tempers, or in coils in the annealed temper.
Deutsches Institut für Normung [din]