KS E ISO 11257-2022 Iron ores for shaft direct-reduction feedstocks-Determination of the low-temperature reduction-disintegration index and degree of metallization
2022KS E ISO 11257-2022 Iron ores for shaft direct-reduction feedstocks-Determination of the low-temperature reduction-disintegration index and degree of metallization
2017KS E ISO 11257:2017 Iron ores for shaft direct-reduction feedstocks-Determination of the low-temperature reduction-disintegration index and degree of metallization
2008KS E ISO 11257:2008 Iron ores for shaft direct-reduction feedstocks-Determination of the low-temperature reduction-disintegration index and degree of metallization