Unified Systems of Design Documentation. Standard graphic symbols. Pipeline valves and fittings
Единая система конструкторской документации. Обозначения условные графические. Арматура трубопроводная |
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RD 153-34-0-03-301-00Fire Safety Regulations for Energy Enterprises. |
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GOST 19034-82General-purpose plastic pipe, fittings, and … |
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CU ТР ТС 010-2011Customs Union technical regulation. On the … |