ASME B16-18 pdf download CAST COPPER ALLOY SOLDER JOINT PRESSURE FITTINGS 4 SIZE The size of the fittings shown in Table 3 and Table A1 corresponds to standard water tube size as shown in ASTM B 88, Specification for Seamless Copper Water Tube. The size of the threaded ends corresponds to nominal pipe size as shown in ASME B1.20.1. Fittings...