Home / Standards / GB/T 8721-2009 GB/T 8721-2009 Abolished Method for the determination of tensile strength of carbonaceous materials 炭素材料抗拉强度测定方法 Standard Type GBT ICS 29.050 CCS Q52 Status 废止 Issue Date 2009-07-08 Implementation 2010-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会