增城市政道路护栏 锌钢围栏批发 定做304不锈钢复合管围栏

增城市政道路护栏 锌钢围栏批发 定做304不锈钢复合管围栏

Zengcheng municipal road fence zinc steel fence wholesale custom 304 stainless steel composite pipe fence

我们在郑州至新郑高速公路上施工时有这样放线的路段。

We have such a set out section in the construction of Zhengzhou Xinzheng expressway.

有的立柱顶面距缘石顶面大于70cm，有的小于70cm。

The distance between the top surface of some columns and the top surface of curb is more than 70cm, and some are less than 70cm.