Home / Standards / GBT 50538-2020 GBT 50538-2020 Technical Standard for Anti-corrosion and Thermal Insulation Layer of Buried Steel Pipeline 埋地钢质管道防腐保温层技术标准 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A