Description:Pipes, Plastics, Thermosetting polymers, Reinforced materials, Glass fibres, Pipework systems, Plastic pipelines, Spigot-and-socket joints, Joints, Design, Mechanical testing, Pressure testing, Low-pressure tests, Internal, Leak tests, Bend testing, Sealing rings, Seals, Elastomers, Hydraulic tests, Test equipment, Test specimens, Testing conditions