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United power system and isolated power systems. Relay protection and automation. Differential protection of power lines 110–220 kV. Testing
Document status: Active
Triangular throw-away (indexable) carbide cutting inserts with cylindrical holes and chip-breaking flutes on both faces. Design and dimensions
Document status: Active
Explosive atmospheres. Part 29-4. Gas detectors. General technical requirements and test methods of open path detectors for flammable gases
Document status: Active
Refractory materials and products. Methods for the determinations of titanium dioxide
Document status: Replaced by GOST 2642.6-97
