GOST 20917-87

Steel pattern plates with changeable metal inserts for moulding boxes having inside dimensions 800x700 mm for moulding foundry machines without turn of half mould with squeezing. Design and dimensions

Oscillator, modulator and regulation tubes anode dissipated power more than 25 W. Method of measurements of electrical parameters. General principles

Sheet stamping dies. Plates-blanks for dies with four guide assemblies. Design and dimensions

United power system and isolated power systems. Relay protection and automation. Wide-area measurement system. Phasor measurement unit. Norms and requirements

Medical electrical equipment. Part 2-21. Particular safety requirements considering essential performance for infant radiant warmers

Nanomaterials. Silver nanosuspension. General technical requirements and test methods