Objavljen
ISO 20292:2009 covers materials for the production of primary aluminium.
ISO 20292:2009 specifies a method for the determination of the resistance of dense refractory bricks to cryolite melt with excess sodium fluoride.
OBJAVLJEN
ISO 20292:2009
90.93
Odluka o potvrđivanju standarda
18. 3. 2026.