Home / Standards / GB/T 34350-2017 GB/T 34350-2017 Active External inspection methodology for internal corrosion of liquid petroleum pipelines 输油管道内腐蚀外检测方法 Standard Type GBT ICS 23.040.01 CCS E29 Status 现行 Issue Date 2017-10-14 Implementation 2018-05-01 Responsible Dept 国家标准委 Drafting Unit N/A