GSL General Sheetmetal Ltd Specialists in Manufacture of Ducting, Stainless Steel Fabrication and Tig Welding. For Fabricators Aluminium Stainless Steel Benches Ducting Welding Structural & General Engineers Tanks Cylinders Heating Ventilating.? Stainless Steel & Aluminium Fabricators? General Sheetmetal Work? Welders in TIG & MIG? Heating & Ventilation Ducts? Punching & Press Work