GOST 13938.8-78

Union crosses for tube connections on internal cone. Construction and dimensions

Low-power electronic tubes and valves. Methods of measurement of current due to the cathode electron emission

Energy effectiveness. Glandless circulators. Part 1. General requirements and procedures for testing and calculation of energy effectiveness index (EEI)

Low voltage surge protective devices. Part 21. Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods

Oil pressure units for hydraulic turbines. Specifications

Environmental labels and declarations. Type III environmental declarations. Principles and procedures