brass tube 1.Used for Evaporator, Heat Exchanger, Condenser 2.ISO9001/14001/18001/CCS 3.ASTMB111/EN12451 4. C68700 The brass tube/pipe ... with alloy C68700 is Used for Evaporator, Heat Exchanger, CondenserDiameter ... .5% Cu, 20.35% Zn, 2.15% Al Seamless aluminum brass tube/pipe in C68700/CuZn20Al2As/Cz110