What are the two purpose wrenches?
Standard for manufacture of dual-purpose wrenches: GB/T4392-1995 (percussion wrenches and percussion wrenches). Features: dual wrench and spanner by high-quality carbon steel or alloy steel forged into a whole, has the advantages of reasonable design, stable structure, high density material, anti attack ability, do not fold, constantly, bending, product size precision, durability and other characteristics.
It is the necessary tool for equipment installation, equipment and equipment overhaul and maintenance work. The dual-purpose wrench is divided into two kinds: metric and english. Dual wrench material: Double wrench using No. 45 medium carbon steel or 40Cr alloy steel whole forging processing.
The use of dual-use wrenches: large industrial dual-use wrench for oil, chemical, metallurgy, power generation, refining, shipbuilding, petrochemical and other industries.
