Home / Standards / GB/T 31061-2014 GB/T 31061-2014 Active Cork-rubber gasket for shield-driven tunnel 盾构法隧道管片用软木橡胶衬垫 Standard Type GBT ICS 83.140.99 CCS G47 Status 现行 Issue Date 2014-12-22 Implementation 2015-06-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A