Pliers are hand tools used to clamp and fix workpieces or twist, bend, and cut metal wires. The shape of the pliers is V-shaped and usually includes three parts: handle, jaw and mouth.
The pliers are generally made of carbon structural steel, which is first forged and rolled into the shape of a pliers embryo, then subjected to metal cutting such as milling, polishing, and finally heat treatment.
The handle of the pliers is designed in three styles: straight handle, curved handle and bow handle according to the grip. The pliers are often used in contact with live conductors such as wires, so the handle is generally covered with a protective tube made of insulating materials such as polyvinyl chloride to ensure the safety of the operator.
There are many forms of pliers, and the common ones are pointed, flat, flat, round, curved, etc., which can adapt to the needs of different shapes of workpieces. According to their main functions and nature of use, pliers can be divided into clamping pliers, wire pliers, wire strippers, pipe pliers, etc.
