Huntingdon Fusion Techniques Ltd has introduced a lightweight trailing shield to keep welds clean while welding. These trailing shields are suitable for cases where piping, pipe work and sheet metal structures are fabricated from stainless steels, reactive alloys, nickel alloys, nimonics and titanium. By adding the trailing shield to a TIG/GTAW/PAW welding torch the weld stays under a protective argon gas shroud, while the hot, welded joint is cooling so that the heated metal does not oxidize on contact with air. Trailing Shields are available for any diameter of Pipe, Vessel or Tank etc. and they are also manufactured in flat format for welding sheets or plates made of the materials mentioned above. Radiused versions are manufactured for working on the inside of large tanks as well as the outside. Replaceable silicon rubber seals are used on the sides of the Trailing Shields to prevent the protective argon gas from escaping.