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在钢筋加工中,当采用冷拉调直时,必须控制钢筋的伸长率,对HPB235级钢筋,冷拉伸长率不宜大于()。A.1
在钢筋加工中,当采用冷拉调直时,必须控制钢筋的伸长率,对HPB235级钢筋,冷拉伸长率不宜大于()。
A.1%
B.2%
C.3%
D.4%
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在钢筋加工中,当采用冷拉调直时,必须控制钢筋的伸长率,对HPB235级钢筋,冷拉伸长率不宜大于()。
A.1%
B.2%
C.3%
D.4%
A.HPB300级钢筋冷拉伸长率不宜大于4%
B.HRB335级钢筋冷拉伸长率不宜大于3%
C.HRB400级钢筋冷拉伸长率不宜大于2%
D.RRB400级钢筋冷拉伸长率不宜大于2%
A.3%.
B.4%.
C.5%.
D.6%.
A.1%
B.3%
C.4%
D.2%
A.3% 1%
B.4% 1%
C.5% 2%
D.2% 1%
A.钢筋冷拉调直时,不能同时进行除锈
B.HRB400级钢筋采用冷拉调直时,伸长率允许最大值为4%
C.钢筋的切断口可以有马蹄形现象
D.HPB235级纵向受力钢筋末端应作180。弯钩