Extruded sheets of polyethylene (PE-HD). Requirements and test methods|Plastics and rubber technology, Polyethylene, Mechanical properties of materials, Thickness, Dimensional tolerances, Rolls, Delivery, Specimen preparation, Smoothness (surface), Defects, Thermal testing, Thermoplastic polymers, Shrinkage, Form tolerances, Designations, Marking, Test specimens, Extruding, Sheet materials, Thermal properties of materials, Visual inspection (testing), Density, Sampling methods, Width, Length, Shrinkage tests