Welding rods are metal rods used in the welding process to join two or more pieces of metal together. They are typically made from materials like steel, aluminum, or other alloys and are coated with a flux to help protect the weld from contamination. When heated, the rod melts and fuses with the base metals, creating a strong bond. There are different types of welding rods designed for various welding techniques, such as MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas) welding. Each type has specific properties that make it suitable for different applications, ensuring effective and durable welds.