Home / Standards / GB/T 35644-2017 GB/T 35644-2017 Active Specification for data acquisition of underground pipeline 地下管线数据获取规程 Standard Type GBT ICS 07.040 CCS A75 Status 现行 Issue Date 2017-12-29 Implementation 2018-07-01 Responsible Dept 自然资源部(测绘地理) Drafting Unit N/A