Home / Standards / GB/T 5989-2023 GB/T 5989-2023 Active Refractory products—Determination of refractoriness under load(differential method with rising temperature) 耐火材料 荷重软化温度试验方法(示差升温法) Standard Type GBT ICS 81.080 CCS Q40 Status 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 国家标准委 Drafting Unit N/A