Exemplifies the sound and accepted welded connections that are applicable to welded, not internal, pressurized steel components. It gives examples of connections welded by the following processes: - self-shielded tubular-cored arc welding; - manual metal arc welding; - MIG welding; metal inert gas welding; - submerged arc welding; - MAG welding; metal active gas welding; - tubular cored metal arc welding with inert gas shield; - tubular cored metal are welding with active gas shield; and - TIG welding; tungsten inert gas arc welding.