Home / Standards / GB/T 17888.4-2008 GB/T 17888.4-2008 Abolished Safety of machinery - Permanent means of access to machinery - Part 4: Fixed ladders 机械安全 进入机械的固定设施 第4部分∶ 固定式直梯 Standard Type GBT ICS N/A CCS J09 Status Abolished Issue Date 2008-03-31 Implementation 2008-10-01 Centralized Committee 国家标准委 Issuing Authority 国家标准委