Reinforcing bar welding strengthens the connection of reinforcing bars by heating the surface of the bars with an electric arc, melting them at high temperatures, and applying pressure to solidify them.

Rebar coupler connection is fix the reinforcing bars firmly by setting coupler components on both ends of the bars.

Differences in construction techniques

Welding reinforcing bar requires workers have welding skills and operational experience, also it need welding equipment. However, mechanical coupler connection is a simple construction method that only requires setting up the coupler and coupler components, and can be completed by tightening nuts or using clamps.

Practical application scenarios

Reinforcing bar welding is mainly used for connecting high-strength reinforcing bars, such as in high-rise buildings and large-scale bridges.

Mechanical rebar coupler is suitable for connecting ordinary reinforcing bars, such as in building floors and wall beams.

In conclusion, although both reinforcing bar welding and coupler connection are used to strengthen the connection of reinforcing bars, they differ in principles, construction techniques, and practical applications. We should choose the appropriate connection method based on specific situations.