Home / Standards / GB/T 34346-2017 GB/T 34346-2017 Active Guidelines for risk based safety hazard classification of oil and gas pipelines 基于风险的油气管道安全隐患分级导则 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