Scaffold couplers are used in the following applications:

1. Construction: Connecting scaffolding tubes to create stable working platforms for construction workers.

2. Maintenance and Repair: Providing support structures for building maintenance and repair work.

3. Event Staging: Building temporary structures for stages, seating, and other event setups.

4. Industrial Applications: Creating access platforms and support structures in industrial settings like power plants and factories.

5. Bridge Construction: Supporting temporary structures during bridge construction and repairs.

6. Facade Work: Facilitating facade cleaning, painting, and other exterior building work.

7. Shipbuilding: Providing access and support during the construction and maintenance of ships.

8. Infrastructure Projects: Used in large infrastructure projects such as tunnels, dams, and highways for temporary supports and access platforms.

These applications highlight the versatility and importance of scaffold couplers in ensuring the safety and stability of temporary structures.