Plastics piping systems. Thermoplastics pipes & fittings for hot & cold water. Test method for the resistance of mounted assemblies to temperature cycling Pipework systems, Pipes, Pipe fittings, Pipe couplings, Plastics, Thermoplastic polymers, Hot-water supply systems, Cold-water supply systems, Thermal resistance, Thermal testing, Thermal-cycling tests, Flexible pipes, Rigid pipes, Pressure pipes, Joints