Home / Standards / GB/T 10227-1988 GB/T 10227-1988 Abolished Accuracy of fine-pitch cylindrical worm and wormwheel 小模数圆柱蜗杆、蜗轮精度 Standard Type GBT ICS 21.200 CCS J17 Status 废止 Issue Date 1988-12-22 Implementation 1989-10-01 Responsible Dept 国家标准委 Drafting Unit N/A