Home / Standards / GBT 39637-2020 GBT 39637-2020 Corrosion of metals and alloys — Classification of corrosivity of soil environment 金属和合金的腐蚀 土壤环境腐蚀性分类 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