Pressure Rating for Copper Pipe and Tubes
Pipe - Copper - ASTM B280 - Type K O.D. NOMINAL WALL I.D MAX. PRESSURE (IN PSIG) at 150˚F 0,375'' (3/8'') 1/4'' 0,035'' 0,305'' 913 ratings for hard drawn tube are substantially higher, they should only be used for systems using properly designed flare or compression mechanical joints, since joining by any heating process might anneal