In welding joints, what is primarily used for joining metal sheets with overlapping edges?

The fillet joint is primarily used for joining metal sheets with overlapping edges. This type of joint is designed to accommodate two pieces of material that are positioned at a right angle or skewed to each other. The overlap allows for a larger surface area for weld fusion, which provides strength and stability to the joint.

Fillet joints are commonly used in various applications, including structural welding and fabrication, because they can be easily made in different positions and are versatile in terms of design. They can also be reinforced with additional weld metal to enhance the joint strength, making them suitable for different load conditions.

This explains why the fillet joint is appropriate for situations where sheets overlap, as it effectively joins them while maintaining structural integrity.