Qiaofang brand explosion-proof double-ended wrench

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Classification of explosion-proof tools. Internationally, explosion-proof tools are collectively referred to as safety tools and non-sparking tools, and domestically, they are collectively referred to as explosion-proof tools. The material is generally copper alloy with rare metals added. Aluminum-copper alloy explosion-proof tools are synthesized, smelted, and forged from precious and rare metals. After the tools are made, the surface turns yellow. The working surface is hard and above, and the tensile strength & other technical indicators all reach the advanced level of similar foreign products. It is safe to use continuously in the space where the flammable gas ethylene (concentration.%) is used. There will be no spark explosion due to impact (collision), friction, or falling weight. Beryllium-copper alloy explosion-proof tools have better tensile strength and hardness than aluminum-copper alloys, and they also have anti-magnetic functions.
% of the explosion-proof tools produced, sold and circulated in China are from Zhongbo Explosion-proof Group, which can be divided into two categories based on material. Aluminum-copper alloy (commonly known as aluminum bronze) explosion-proof tools, the specific material is high-purity electrolytic copper. An appropriate amount of aluminum, nickel, manganese, iron and other metals are added to the matrix to form a copper-based alloy. .Beryllium copper alloy (commonly known as beryllium bronze) explosion-proof tools, the specific material is high-purity electrolytic copper as the matrix, adding an appropriate amount of beryllium, nickel and other metals to form a copper-based alloy. Both materials have very good thermal and electrical conductivity. After heat treatment, the hardness and wear resistance of aluminum bronze are almost the same as those of beryllium bronze. Beryllium bronze is non-magnetic and can be used in strong magnetic field environments.