| High-pressure seamless steel pipes
Трубы стальные бесшовные высокого давления. Технические условия |
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GOST 12.1.012-78SSBT. Occupational Safety Standards System. … |
Gosnadzor ??-48/1054Provisional Recommendations on Building … |
GOST 5631-79Varnish BT-577 and paint BT-177. Specifications |