Pipeline valves and fittings. Inspection and testing methods
Арматура трубопроводная. Методы контроля и испытаний. |
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Gosnadzor 37PROCEDURE FOR TRAINING AND CERTIFICATION OF … |
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GD Постановление 982 от 01.12.2009Government of the Russian Federation. … |
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RDS РДС 30-201-93Instruction on the composition, procedure for … |