Home / Standards / GB/T 21246-2020 GB/T 21246-2020 Active Measurement method for cathodic protection parameters of buried steel pipelines 埋地钢质管道阴极保护参数测量方法 Standard Type GBT ICS 75.180.30 CCS E98 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 国家标准委 Drafting Unit N/A