Home / Standards / GB/T 3777-1996 GB/T 3777-1996 Abolished Standard classification system for carbon blacks used in rubber products 橡胶用炭黑标准分类命名系统 Standard Type GBT ICS 83.040.20 CCS G49 Status 废止 Issue Date 1996-10-28 Implementation 1997-06-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A