Home / Standards / GB/T 46322-2025 GB/T 46322-2025 Active Restrained joint systems for ductile iron pipelines—Calculation rules for lengths to be restrained 球墨铸铁管自锚接口系统 自锚长度计算方法 Standard Type GBT ICS 23.040.10 CCS H48 Status 现行 Issue Date 2025-10-05 Implementation 2026-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A