Home / Standards / GB/T 37449-2019 GB/T 37449-2019 Active Design requirements for offshore cranes under ice condition 冰区环境下海洋平台起重机的设计要求 Standard Type GBT ICS 47.020.50 CCS U42 Status 现行 Issue Date 2019-05-10 Implementation 2019-12-01 Responsible Dept 国家标准委 Drafting Unit N/A