... manufactured according to UNE-EN-ISO 15875-2, UNE-EN-ISO 15876-2 and ISO 4065 with the following nominal sizes and tolerances ... 20,0 20.32,8 2.8 3.225 25,0 25,32,3 2,3 2,725 25,0 25.33,5 3.5 4.032 32,0 ... ,33 2,8 3,43. Copper pipes manufactured according to the norm UNE-EN1057 PLS-08047 brass refrigeration copper fittings with EN1254-2 certification ...