7171 Piped supply systems for beverages (1) Pressurized piped systems to reticulate alcoholic and non-alcoholic beverages from storage containers to user points dispensing equipment 7172 Piped supply systems for liquid detergents (2) Piped system to reticulate liquid soap, liquid detergents and associated cleaning liquids and reagents from storage containers to user points dispensing equipment 7173 Piped supply systems for washing building surfaces (2) Piped supply systems for washing building surfaces, including discharge equipment 7174 Piped supply systems for non-flammable industrial liquids (1) Piped supply systems for non-flammable industrial liquids dispensing equipment 7175 Piped reticulation systems for flammable liquids (0) Piped reticulation systems to store and reticulate flammable liquids, including diesel oil, kerosene, fuel oil and petrol to user points