Insulating materials. Industrial rigid round laminated tubes & rods based on thermosetting resins for electrical purposes. Specifications for individual materials. Round laminated moulded rods Laminates, Moulded materials, Reinforced materials, Solid electrical insulating materials, Electrical insulating materials, Bars (materials), Thermosetting polymers, Plastics, Polymers, Designations, Dimensional tolerances, Straightness measurement, Flexural strength, Compressive strength, Breakdown voltage, Electrical insulation, Thermal resistance, Water absorption, Density, Circular shape, Diameter