Ключевые слова:
Installation|Hydraulic tests|Manholes|Stiffness|Deflection tests|Marking|Diameter|Drainage|Quality control|Performance|Shear testing|Leak tests|Construction systems parts|Dimensions|Test equipment|Reinforced materials|Watertightness tests|Mechanical testing|Colour|Thermoplastic polymers|Grades (quality)|Thermal-cycling tests|Pressure testing|Plastics