[冶金行业标准] YB/T 4069-1991 GH 4133 B合金盘形锻件
[冶金行业标准] YB/T 4068-1991 热轧环件
[冶金行业标准] YB/T 4066-1991 铬精矿
[冶金行业标准] YB/T 4065-1991 菱镁石精矿
[冶金行业标准] YB/T 4060-1991 高炉料钟、料斗
[冶金行业标准] YB/T 4058-1991 双齿辊破碎机用齿辊
[冶金行业标准] YB/T 4057-1991 单齿辊破碎机用齿辊
[冶金行业标准] YB/T 4038-1991 高炉用低温粗缝糊
[冶金行业标准] YB/T 4037-1991 半石墨质高炉炭块
[冶金行业标准] YB/T 4033-1991 连铸中间包用硅质绝热板
[冶金行业标准] YB/T 4031-1991 钛精矿(岩矿)
[冶金行业标准] YB/T 4025-1991 铌磷半钢
[冶金行业标准] YB/T 2807-1991 粗缝糊
[冶金行业标准] YB/T 2803-1991 高炉用自焙炭块
[冶金行业标准] YB/T 14-1991 铸造用生铁
[冶金行业标准] YB/T 007-1991 连铸用铝碳质耐火制品
[冶金行业标准] YB/T 006-1991 优质铁烧结矿
[冶金行业标准] YB/T 005-1991 铁球团矿
[冶金行业标准] YB/T 003-1991 薄板坯
[冶金行业标准] YBJ 228-1991 缝管锚杆支护技术规程
[冶金行业标准] YBJ 227-1991 锚杆静压桩技术规程
[冶金行业标准] YB 4076-1991 -连铸用熔融石英质耐火制品
[冶金行业标准] YB 4074-1991 镁碳砖标准
[冶金行业标准] YB 4067-1991 冶金用金块矿
[冶金行业标准] YB 4066-1991 铬精矿