Home / Standards / GB/T 35490-2025 GB/T 35490-2025 Upcoming Coating corrosion control technology of prestressed concrete cylinder pipe 预应力钢筒混凝土管涂层腐蚀控制技术 Standard Type GBT ICS 25.220.99 CCS A 29 Status 即将实施 Issue Date 2025-12-02 Implementation 2026-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A