Home / Standards / GB/T 6443-2025 GB/T 6443-2025 Active Information of dimensional data and other requirements given on the drawing for cylindrcal involute gears 渐开线圆柱齿轮图样上应注明的尺寸数据和其他要求 Standard Type GBT ICS 21.200 CCS J17 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 国家标准委 Drafting Unit N/A