The steering bridge structure of all types of cars is basically the same, mainly composed of four parts, including the front axle (beam), steering knuckle, kingpin and wheel hub.

     As the front axle of the main part, it is generally made of medium carbon steel by die forging and heat treatment. The section is i-shaped or tubular.

In order to improve the torsional strength, there is a punch at each end of the front axle, including a through hole into which the kingpin is inserted. The middle bends downward into a concave shape in order to lower the position of the engine and thus the center of mass of the vehicle; Expand the driver's field of vision; Reduce the Angle between the transmission shaft and the transmission output shaft.