Home / Standards / GB/T 16770.1-2025 GB/T 16770.1-2025 Active Solid hardmetal end mills with parallel shank—Part 1: Type and dimensions 整体硬质合金直柄立铣刀 第1部分:型式与尺寸 Standard Type GBT ICS 25.100.20 CCS J41 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A