Ключевые слова:
Protective coatings|Coatings|Frames for openings|Plastics|Rotating parts|Marking|Seals|Watertightness tests|Doors|Water|Liquid flow|Steels|Cast-iron|Flow control|Sewage engineering|Flow regulators|Holes|Dimensions|Spindles|Water retention and flow works|Water supply engineering|Leak tests|Dimensional tolerances|Gate valves