There are two main sintered technologies for concrete grinding cup wheel: cold-pressed and hot pressed.
The cold-pressed sintering pressure is big and the sintering time is long.
Generally, overall cold pressed sintered is applied. The segments with hot-pressed sintered are welded on the base by high-frequency welding technology.
Also, there is welding technology for the concrete grinding cup wheel.
For the base, there are steel base and aluminum base.