Home / Standards / GB/T 40808.4-2026 GB/T 40808.4-2026 Upcoming Environmental evaluation of machine tools—Part 4: Principles for measuring metalforming machinery with respect to energy efficiency 机床环境评估 第4部分:锻压机械能效测量原则 Standard Type GBT ICS 25.120.10 CCS J62 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A