Home / Standards / GB/T 31970-2025 GB/T 31970-2025 Active Performance requirements and bench test methods for air brake caliper assemblies of vehicles 汽车气压制动钳总成性能要求及台架试验方法 Standard Type GBT ICS 43.040.40 CCS T24 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 工业和信息化部 Drafting Unit N/A