System of Design Documents for Construction. Symbols for Presentation of Pipelines.
Система проектной документации для строительства. Условные обозначения трубопроводов. |
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GOST 21105-87Non-destructive testing. Magnetic powder method |
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SP 118.13330.2012Public Buildings and Works Updated Version of … |
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GOST R 52644-2006High-strength hexagonal bolts with increased … |