1. Whole casting
Brake drums are casted from high strength grey cast iron or alloy cast iron containing Cr.
This kind of brake drum is simple in structure, convenient in processing, large in heat capacity,
but large in size, mainly used in medium and heavy vehicles.
2. Steel plate and cast iron combination
Brake drum is composed of steel plate stamping drum disc and cast iron drum ring, size is relatively small
generally used in cars and light vehicles.
3.Light alloy and cast iron combination
The brake drum is made of light alloy (such as aluminum alloy, etc.) with inner cast iron lining. It's
not only with small size, but also in good heat dissipation, which mostly used in cars.