Aluminium Brass Tube Material:UNSC68700 Strictly implements the standard specification of ASTM B111/ASME SB111 1. Professional Copper and Copper-Alloy Seamless Heat exchanger and Condenser Tubes Manufacturer.2. Our Productions are widely used in Steam Turbines, Seawater Desalination Equipments, Petrochemical Plants, Power Plants, Coolers, Boiler, Water Evaporators, Oil Refineries, Shipbuilding ...