Home / Standards / GB/T 15902-2009 GB/T 15902-2009 Abolished Conveyor belts - Determination of elastic and permanent elongation and calculation of elastic modulus 输送带 弹性伸长率和永久伸长率的测定及弹性模量的计算 Standard Type GBT ICS 53.040.20 CCS G42 Status 废止 Issue Date 2009-04-24 Implementation 2009-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A