Home / Standards / GB/T 17503-2009 GB/T 17503-2009 Active Specifications for offshore platform engineering geology investigation 海上平台场址工程地质勘察规范 Standard Type GBT ICS 07.060 CCS A45 Status 现行 Issue Date 2009-10-30 Implementation 2010-04-01 Responsible Dept 自然资源部(海洋) Drafting Unit N/A