The explosion-proof adjustable wrench is mostly suitable for quickly tightening or dismounting various specifications of hexagon heads, square head bolts and nuts in flammable and explosive places.The adjustable wrench is precision forged from high-quality high-purity copper alloy, and the wrench is precisely processed. The opening is flexible. The spring worm is added to keep the wrench stable.

Adjustable wrench specifications are 6",8",10",12",15",18",24".The product is pressed by a large friction press. High strength, stable mechanical properties and long service life.

1,Aluminum bronze,Al-Cu,aluminum,nickel,manganese,iron and other metals were added to the high purity electrolytic copper as matrix to form copper-based alloy.

Suitable for ethylene with concentration below 7.8%,standard code GBEX ⅡB

Hardness is not less than HRC25,Tensile strength δ b 75-85kgf/mm2

2,Beryllium copper,Be-Cu,the copper base alloy was forming by adding some metals such as beryllium,nickel.

The thermal and electrical conductivity of these two materials are very good,beryllium bronze is non-magnetic and can be used in strong magnetic fields.

Suitable for hydrogen with concentration below 21%,standard code GBEX ⅡC

Hardness is not less than HRC35,Tensile strength δ b 105-120kgf/mm2

Beryllium copper alloy with anti-magnetic performance.