IAPMO IGC 351-2018a covers applied in place pipe rehabilitation (AIPPR) systems intended for use in 40 to 200 mm (1.5 to 8 in) gravity and pressure applications such as DWV, sanitary sewer, storm sewer, electrical conduit, ventilation, process piping, and non-potable supply piping systems and specifies requirements for materials, physical characteristics, performance testing, and markings.

Applied in place pipe rehabilitation systems (AIPPR) covered by this Standard
(a) employ a general purpose two component polyurea derived from the reaction product of an isocyanate component and a synthetic resin blend component through step-growth polymerization; and,
(b) are applied to the pipe and fitting system through using spray, brush or troweling to a finished thickness of not less than SDR100.