Home / Standards / GB/T 31254-2014 GB/T 31254-2014 Active Safety of machinery―Safety specification for the design of fixed ladders 机械安全 固定式直梯的安全设计规范 Standard Type GBT ICS N/A CCS J09 Status 现行 Issue Date 2014-12-05 Implementation 2015-07-01 Responsible Dept 国家标准委 Drafting Unit N/A