建筑中使用的小钢筋一般都是由环状钢筋拉直而成 ,常规的拉直方式是把环状钢筋捆在卷扬机上 ,利用拉力拉直。采用这种方法 ,每拉一根钢筋要打两个结 ,拉直后又要将这两个结剪掉 ,既浪费材料又浪费时间 (每根浪费 1ｍ左右 )。现介绍一种既不浪费材料又节省时间的拉直钢筋的夹具 The small bars used in the buildings are generally straightened by the ring bars. The conventional straightening method is to bundle the ring bars on the winches and straighten them by pulling force. Using this method, each pulling a steel bar to play two knots, after straightening and then cut the two knots, both waste material and waste of time (each waste about 1m). Here is a description of a material that does not waste material and save time to straighten the fixture