State system for ensuring the uniformity of measurements. State verification schedule for means measuring on Martens scales hardness and indentation scales hardness
High pressure vessels and apparatus. Norms and methods of strength calculation. Reinforcement of openings in shells and heads external pressure. Strength calculation under external static loads on the nozzle
Occupational safety standards system. Industrial filtering gas masks and respirators. Nephelometric method for determination of all-service canisters penetration coefficient of oil mist
