A joint pin is a metal connecting component used to join two scaffold or steel pipes end-to-end, ensuring proper alignment and structural continuity. It is widely used in scaffolding systems, construction frameworks, and temporary structures, where extending pipe length safely and securely is required.
The main function of a joint pin is to connect two pipes internally. The pin is inserted halfway into one pipe and the remaining half into the next pipe, creating a straight, aligned joint. This allows the pipes to act as a single continuous member, improving strength and stability.
A typical joint pin is:
Cylindrical in shapePrecisely sized to fit inside standard scaffold or steel pipesManufactured from mild steel or high-strength steel
Some joint pins include a central stopper or ridge to ensure equal insertion depth on both sides, which helps maintain balance and alignment.