Home / Standards / GB/T 266-1988 GB/T 266-1988 Active Petroleum products--Determination of Engler viscosity 石油产品恩氏粘度测定法 Standard Type GBT ICS 75.080 CCS E30 Status 现行 Issue Date 1988-09-05 Implementation 1989-06-01 Responsible Dept 国家标准委 Drafting Unit N/A