List five joint types used in welding.
1. Butt joint: A joint between two pieces of material that are aligned in the same plane and connected by bringing the two ends together.
2. Lap joint: A joint between two overlapping pieces of material, where the edges are welded together.
3. Corner joint: A joint formed by the intersection of two materials at right angles, such as the corner of a box or frame.
4. T-joint: A joint formed by the intersection of two materials where one piece is perpendicular to the other, resembling the letter T.
5. Fillet joint: A joint created when two materials are perpendicular to each other, but instead of forming a sharp corner, they are welded together with a curved or triangular shape.