GOST R 51177-98

Occupational safety standards system. Respiratory protective devices - Half masks without inhalation valves and with separable filters to protect against gases or gases and particles or particles only. Requirements. Testing. Marking

Brush holders and brackets for traction and electrical machines. Serrate rifling. Dimensions

Wheat flour. Determination of wet gluten content by mechanical means

Machines for sharpening circular saw norms of accuracy and rigidity

Single-stage trestle-work for technological pipelines. Types and basic parameters

State system for ensuring the uniformity of measurements. Metals and alloys. Instrumental indentation test for hardness and other material parameters. Part 3. Technical requirements and calibration of reference test blocks