Home / Standards / GB/T 12369-1990 GB/T 12369-1990 Active Basic tooth profile of straight and skew bevel gears 直齿及斜齿锥齿轮基本齿廓 Standard Type GBT ICS 21.200 CCS J17 Status 现行 Issue Date 1990-06-26 Implementation 1991-03-01 Responsible Dept 国家标准委 Drafting Unit N/A