Home / Standards / GB/T 4133-2025 GB/T 4133-2025 Active Machine tools—Positive drive of Morse tapers 机床 莫氏圆锥强制传动 Standard Type GBT ICS 25.080.01 CCS J50 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