Home / Standards / GB/T 20878-2007 GB/T 20878-2007 Abolished Stainless and heat-resisting steels — Designation and chemical composition 不锈钢和耐热钢 牌号及化学成分 Standard Type GBT ICS 77.140.20 CCS H40 Status 废止 Issue Date 2018-02-06 Implementation 2007-10-01 Responsible Dept N/A Drafting Unit N/A