Home / Standards / GB 4463-1984 GB 4463-1984 Abolished Heat-treated steel bar for prestressed concrete 预应力混凝土用热处理钢筋 Standard Type GB ICS 77.140.60 CCS H44 Status 废止 Issue Date 1984-06-05 Implementation 1985-06-01 Responsible Dept N/A Drafting Unit N/A