Russian standards PDF
Occupational safety standards system. Plastic miner`s helmets. Specifications
Document status: Active
Flanges for valves and fittings, connecting parts and pipelines for PN from 0,1 to 20 MPa (from 1 to 200kgf/cm2). Types. Connecting dimensions and dimensions of sealing surfaces
Document status: Replaced by GOST 33259-2015
Machine taps with shortened flutes. Design and dimensions
Document status: Active
Electrical equipment for a.c. 750 kV. Requirements to electric strength of insulation
Document status: Active