Home / Standards / GB/T 4019-2025 GB/T 4019-2025 Active Test conditions for box type vertical drilling machines—Testing of the accuracy 方柱立式钻床检验条件 精度检验 Standard Type GBT ICS 25.080.40 CCS J54 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