Ключевые слова:
Thermoplastic polymers, Pipes, Pressure pipes, Industrial, Chemical-resistance tests, Stress analysis, Polyolefins, Creep testing, Test specimens, Pressure testing, Specimen preparation, Heat treatment, Testing conditions, Mechanical testing, Test equipment, Mathematical calculations, Thermal testing, Temperature, Stress, Polyethylene, Polybutylene, Propylene, Homopolymers, Copolymers