Used for soil, wast discharge and rain water system, including all types of drainage. SWR Drainage systemare for homes, offices, hotels, industries; hospital as well as public place such as airports, railway stations, bus-stand etc. Tougher and economical PVC SWR Pipes & Fitting & pipes are the ideal solution for soil, wadste and vent lines when compared to Cast Iron and Asbestos Cement Drainage systems. These are used for overflow lines and chemical waste lines at industtries, dairy plants, food processing plants etc. including vent lines in drainage systems and in mining pites.