Ключевые слова:
Watering equipment, Irrigation works, Agricultural equipment, Hose reels, Irrigation equipment, Flexible pipes, Pipes, Polyethylene, Density, Thermal stability, Viscosity, Determination of content, Cracking, Classification systems, Designations, Stress, Dimensions, Dimensional tolerances, Diameter, Length, Thickness, Weight (mass), Specimen preparation, Strength of materials, Tensile strength, Mechanical properties of materials, Marking