ASTM F1743

1.1 This practice describes the procedures for the reconstruction of pipelines and conduits (2 in. to 96 in. (5 cm to 244 cm) diameter) by the pulled-in-place installation of a resin-impregnated flexible fabric tube into an existing conduit and secondarily inflated through the inversion of a calibration hose by the use of a hydrostatic head or air pressure (see Fig. 1). The resin is cured by circulating hot water by the introduction of controlled steam into the tube or by photoinitiated reaction. When cured the finished cured-in-place pipe will be continuous and tight fitting. This reconstruction process is suitable for use in a variety of gravity and pressure applications such as sanitary sewers storm sewers building piping process piping electrical conduits and ventilation systems.