The material of explosion-proof ratchet wrench is beryllium bronze and aluminum bronze alloy. The working surface hardness of beryllium bronze material is HRC35 ° or above, and the tensile strength is δ b>105-120kgf/mm2; The working surface hardness of aluminum bronze material is HRC25 ° or above, and the tensile strength is δ b>75-85kgf/mm2; The explosion-proof performance meets the GB10686-89 standard.

Explosion proof ratchet wrenches are widely used for fastening or dismantling one or two specifications of hexagonal and square head bolts and nuts in various flammable and explosive working environments such as coatings, petroleum, petrochemicals, gas, and coal mines. They can continuously apply force and are easy and fast to use.