Home / Standards / GB/T 12236-2025 GB/T 12236-2025 Active Steel swing check valve for petroleum, petrochemical and allied industries 石油、化工及相关工业用钢制旋启式止回阀 Standard Type GBT ICS 23.060.50 CCS J16 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