Home / Standards / GB/T 3480-1997 GB/T 3480-1997 Abolished Calculation methods of load capacity for involute cylindrical gears 渐开线圆柱齿轮承载能力计算方法 Standard Type GBT ICS 21.200 CCS J17 Status 废止 Issue Date 1997-12-30 Implementation 1998-07-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委