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International Standard Category: Steel wire, wire ropes and link chains

GB/T 21839-2019    Test methods of steel for prestressing concrete
预应力混凝土用钢材试验方法 ;
Category No.:77.140.65 Valid Status:valid
Issued Organization:SAMR and SAC Issued Date:2019-06-04
Implemented Date:2020-5-1 Abolished Date:
Superseded Standard.: Superseded Date:
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