Home / Standards / GB/T 13487-2025 GB/T 13487-2025 Active Synchronous belt drives—Synchronous belts for general drive 同步带传动 一般传动用同步带 Standard Type GBT ICS 21.220.10 CCS J18 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