... ) strike, friction drop hammer produces no sparks explosion. Beryllium copper alloy explosion-proof tools also have special antimagnetic function, the ... such as brass, bronze, Monel metal (copper-nickel alloy), copper-aluminum alloys (aluminum bronze), or copper-beryllium alloys (beryllium bronze). Commonly used ... drilling crew and so on. TRADE FAIR Water Test Ruler (Copper Rod Type,Cooper Tube Type)