Home / Standards / GB/T 6885-1986 GB/T 6885-1986 Abolished Hardmetals--Sampling and testing of mixed powder 硬质合金 混合粉取样和试验方法 Standard Type GBT ICS 77.040 CCS H72 Status 废止 Issue Date 1986-09-15 Implementation 1987-09-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A