SSBT. Occupational Safety Standards System. Onshore equipment for well completion and workovers. General safety requirements
ССБТ. Система стандартов безопасности труда. Оборудование наземное для освоения и ремонта скважин. Общие требования безопасности. |
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GOST 18105-86Concrete. Strength testing rules |
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MinEnergy 33Extension of Validity Period |
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GD 844Concerning the procedure for preparing and … |