ASTM A779/A779M-2012 标准详情
- 标准号:ASTM A779/A779M-2012
- 中文标题:预应力混凝土用未涂覆密实七股钢丝绞绳标准规格
- 英文标题:Standard Specification for Steel Strand, Seven-Wire, Uncoated, Compacted for Prestressed Concrete
- 标准类别:美国材料与试验协会ASTM
- 发布日期:2012
1.1x00a0;This specification covers two types and three grades of compacted, seven-wire, uncoated strand for use in prestressed concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-relaxation). The three grades
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