ASME B16.22-2001 pdf download.WROUGHT COPPERAND COPPER ALLOY SOLDER JOINTPRESSURE FITTINGS. (hi Other coppers and copper alloys are permitted. provided they meet the chemical requirements of 84% minimum copper and 16% maximum zinc, and provided the fittings produced from the copper alloy meet all the mechanical and corrosion-resistant properties for the end purposes of the fittings. The composition of the copper...