Home / Standards / GB/T 508-1985 GB/T 508-1985 Active Petroleum products--Determination of ash 石油产品灰分测定法 Standard Type GBT ICS 75.080 CCS E30 Status 现行 Issue Date 1985-04-19 Implementation 1986-01-01 Responsible Dept 国家标准委 Drafting Unit N/A