A welded joint is a connection between two or more pieces of metal that are fused together using heat and pressure. This process creates a strong bond, making welded joints essential in construction, manufacturing, and various engineering applications. Common welding methods include MIG, TIG, and arc welding, each suited for different materials and thicknesses. Welded joints can be classified into several types, such as butt joints, lap joints, and corner joints. The choice of joint type depends on the design requirements and the specific application. Proper welding techniques ensure the integrity and durability of the joint, contributing to the overall strength of the structure.