Home / Standards / GBT 31051.4-2016 GBT 31051.4-2016 Cranes — Anchoring devices for crane working and non-working conditions — Part 4: Jib cranes 起重机 工作和非工作状态下的锚定装置 第4部分:臂架起重机 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A