Steel tube couplers play a crucial role in enhancing the overall durability and lifespan of a scaffolding system. These couplers not only provide a secure connection between the tubes but also ensure structural stability and strength. By securely joining the steel tubes, they prevent any movement or displacement, minimizing the risk of accidents and collapses. Additionally, steel tube couplers are highly resistant to corrosion and weathering, which further enhances the longevity of the scaffolding system.