What type of joint is NOT typically described as temporary?

Welded joints are typically not described as temporary because they create a permanent bond between the materials being joined. This type of joint involves melting the base materials and adding a filler material, which solidifies to form a strong and durable connection. The welding process alters the physical and chemical properties of the materials at the joint, making it impossible to separate them without cutting or damaging the components.

In contrast, pipe joints, fastened joints, and screwed joints are generally considered temporary because they can be disassembled without damaging the components. For instance, pipe joints can be unscrewed or unbolted, allowing for maintenance or changes in design. Fastened joints utilize mechanical fasteners such as bolts and nuts, which can be easily removed. Screwed joints involve screws that can be taken out as well. These temporary joints allow for flexibility in assembly and disassembly, which is particularly useful in applications requiring frequent repairs or alterations.