GOST 25531-82

Non-destructive testing. Forgings from ferrous and non-ferrous metals. Ultrasonic methods of flaw detection

Lead sheets. Specifications

Flat plug-in connectors. Basic dimensions, technical requirements and test methods

Automatic emission and discharge control systems. Automatic control systems for pollutant discharges. Volumetric flow measurement subsystem. Technical requirements

Auxiliary electric networks for railway traction substations, transformer substations and power supply linear devices. Technical requirements, design rules, electric calculation methods

Selenium technical. Methods of sulphur determination