Material: BS CuSn7Zn4Pb7-B Description: Standard Specification for Copper and Copper Alloy Ingot and Castings Group Name: Non Ferrous Copper Alloys Sub Group: BS CuSn7Zn4Pb7-B Copper and Copper Alloy Ingot and Castings Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Standard: BS-BRITISH STANDARD