Home / Standards / GB/T 6531-1986 GB/T 6531-1986 Active Crude petroleum and fuel oils--Determination of sediment--Extraction method 原油和燃料油中沉淀物测定法(抽提法) Standard Type GBT ICS 75.040 CCS E21 Status 现行 Issue Date 1986-06-25 Implementation 1987-06-01 Responsible Dept 国家标准委 Drafting Unit N/A