Specification for preformed rigid polyurethane (PUR) and polyisocyanurate (PIR) foams for thermal insulation of pipework and equipment|Flammability, Polyurethane, Compressive strength, Permeability, Thermal insulating materials, Colour, Slabs, Pipes, Dimensional tolerances, Temperature, Water vapour, Thermal insulating properties, Pipework systems, Construction materials, Combustion, Thermal conductivity, Cyanurates, Marking, Moulded materials, Design, Specimen preparation, Polymers, Thermal insulation, Prefabricated parts, Plastics, Dimensional changes, Foams, Fire safety, Grades (quality)