Copper tube used for air conditioning and refrigeration applications in the field (sometimes called "refer" or "acr" tube) is an almost pure copper material meeting the requirements of astm b 280 - standard specification for seamless copper tube for air conditioning and refrigeration field service. It is manufactured from copper alloy c12200 having a chemical composition of a minimum of 99.9% copper (cu) and silver (ag) combined and a maximum allowable range of phosphorous (p) of 0.015 % - 0.040 %. B 280 tube is produced in straight lengths or coils in tempers h58 or o60 respectively, although annealed straight Air conditioning and refrigeration tube (astm b 280) either coiled or straight length is further required to be cleaned and capped prior to shipping. Pancake coil wrapped with plastic bag both end capped then put into carton box for several pieces
