Home / Standards / GB/T 1731-1993 GB/T 1731-1993 Abolished Determination of flexibility of films 漆膜柔韧性测定法 Standard Type GBT ICS 87-010 CCS G50 Status 废止 Issue Date 1979-09-15 Implementation 1993-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A