Explosion-headed wrench; explosion-proof double-headed wrench sets; combination wrench sets explosion-proof tools, though, but also should pay attention when using: Explosion copper wrench non super-power use, but can not use a sleeve or other metal bondage bar longer arm and hammer percussion (percussion except wrench) method knob fasteners. Because of good thermal conductivity of copper and nearly no carbon qualities, the tool and the object friction or impact, the heat is absorbed and short conduction, another reason for the relatively soft since copper itself, there are friction and impact Good yield and difficult to produce small metal particles, very suitable for the manufacture of security tools in explosive, flammable, magnetic and erosive use. Copper is a manual wrench explosion-proof tools most commonly used tools, including: tap wrench proof, explosion-proof curved handle wrenches, explosion-proof single-head wrench ▲ ▲ 〓 headed wrench explosion, explosion-proof curved handle tap Plum ~~ ● explosion-proof wrench hex wrench, tap wrench proof convex, tap wrench proof, explosion-proof wrench ~ ◆ ~ proof valve wrench, explosion-proof F wrench, explosion-proof percussion Allen wrench → ★ ← explosion-proof combination wrenches, Explosion-headed wrench, universal wrench explosion, explosion-proof wrenches @ ■ @ open barrel wrench, explosion C-wrenches, hook wrench explosion, explosion-proof ratchet wrench, explosion-proof T-wrench and other hundreds of nearly a thousand types of product specifications . Copper wrench proof material into aluminum bronze and beryllium are two of them made of bronze aluminum face hardness HRC25 ° or more, the tensile strength δ b> 75-85kgf / mm2, other technical indicators have reached international advanced level. Flammable gas ethylene (concentration 7.8%) are spatially continuous use to ensure safety, red (hit) hit, friction, drop hammer not produce sparks explosion. The beryllium materials face hardness HRC35 ° or more, the tensile strength δ b> 105-120kgf / mm2, based its technical indicators have reached international advanced level. Flammable hydrogen gas (concentration 21%) were using space in quick succession to ensure safety, red (hit) hit, friction, sparks falling weight not explode. Beryllium copper alloy explosion-proof tools also have special magnetically shielded, there is a magnetic field in the working environment can be used normally. Using these two materials produce proof copper wrench effective tool to prevent friction with the work of each other, when the impact of the explosion flammability, to ensure that state property and personal safety. Widely used in petroleum, chemical, mining, anti-terror, anti-magnetic, coal, gas, oil and gas pipelines, power generation, metallurgy, aviation, transportation, pharmaceuticals, gas, plastics, chemical fiber, leather, fireworks, firecrackers and other