Copper-nickel butt welded pipe fittings have good working performance, are easy to weld, and are not sensitive to stress corrosion. This can be used to merge or split fluid streams. It is T-shaped with two outlets, connected at 90¡ã to the main line. These functions include chemical processing, waste treatment facilities, petrochemical facilities, breweries, papermaking, cryogenic plants, gas processing and even nuclear power plants.