Ключевые слова:
Sulfur dioxide|Porosity|Bosses|Liners (mechanical components)|Pipe connections|Gas-supply meters|Corrosion tests|Size|Threads|Flexibility|Screwed fittings|Pipe fittings|Synthetic rubber|Unions|Washers|Dimensions|Homogeneity|Nuts|Electroplating|Bend testing|Reducing couplings|Metal coatings