Home / Standards / GB/T 4513-2000 GB/T 4513-2000 Abolished Classification of unshaped refractory materials 不定形耐火材料分类 Standard Type GBT ICS 81.080 CCS Q46 Status 废止 Issue Date 2000-11-17 Implementation 2001-06-01 Responsible Dept 国家标准委 Drafting Unit N/A