预应力钢丝经调直下料后,其长度误差对预应力混凝土电杆质量的影响是不言而喻的。在目前调直设备尚不够完善的情况下,除少数厂采用二次定长切断的办法外,多数厂仍一次下料定长。因此,其误差大小在很 After the prestressed steel wire is straightened and unloaded, the influence of the length error on the quality of the prestressed concrete pole is self-evident. In the current situation where the straightening equipment is not yet perfect, except for a few factories that adopt the method of cutting off the second fixed length, the majority of the plants are still fixed at one time. Therefore, the error size is very