The product range of form pieces comprises of all components for round air ducting systems - such as bends, reductions, T-piece connectors or roof fittings. Troges round form pieces are produced with state-of-the art machinery and manufacturing processes, including laser welding, and guarantee the highest product quality. Besides the standard galvanized steel with a cink layer of 275 g/m², we manufacture all components in stainless steel, aluminium or copper. Our comprehensive stock of form pieces with diameters of 80 mm to 500 mm makes fast delivery times possible.