Ключевые слова:
Strength of materials, Classification systems, Fire resistance, Performance, Corrosion tests, Locks, Environment (working), Acceptance (approval), Approval testing, Grades (quality), Marking, Torque, Thermal testing, Lock cylinders, Mechanical testing, Endurance testing, Keys, Crime prevention devices, Performance testing, Life (durability), Heating tests, Corrosion resistance, Ironmongery (buildings)