Spiral type steel bar hoop made by spiral steel bar hoop machine controlled by microcomputer can increase the antivibration property of building.

微机控制螺旋钢箍机所加工成型的螺旋型钢箍，能够提高建筑物的抗震性能。

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So the high effective pre-stressed reinforced concrete hollow slab with Medium strength spiral-continuous -ribs steel bar has a good prospect.

因此，以中强螺旋肋钢丝为受力筋的预应力空心板具有广阔美好的发展前景。

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This paper studies the tensile properties of stripe and round bar specimens for high grade(API X65~X70) spiral submerged-arc welding(SSAW) steel pipes.

通过试验研究了X65、X70级螺旋埋弧焊钢管不同拉伸试样——板状试样和圆棒试样的拉伸性能。

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