Welding rod is the material used in the process of welding copper and copper alloy parts, copper and brass parts, and with the different chemical composition, suitable for different size welding seam. Then how to select a suitable welding rod? 1.Base metal type 2.Tensile strength 3.Base metal thickness Certain welding rods are also recommended for specific welding positions according to AWS standards.  So when you choice a welding rod, please confirm the certain specifications with the supplier, that’s will save your work efficiency!