琼海市面包管护栏现货 儋州公路中心隔离护栏批发 海口马路栏杆热销

foshan fence factory customized road fence yunfu municipal fencecollision barrier spot

河源公路护栏 潮州道路中央隔离护栏 市政防撞护栏

heyuan highway fence chaozhou road central isolation fencemunicipal anti-collision fence

广州护栏厂 定制市政马路中间道路护栏 车道人行道隔离栏

guangzhou fence factory customized pedestrian separation barrier ofmunicipal road intermediate road fence lane

立柱纵向位置的确定：先在路缘石上用红铅笔根据立柱间距划出横线，

determining the vertical position of the pillar: first, draw thehorizontal line on the curb stone with a red pencil according tothe distance between the pillars.

再用线绳和钉子顺路方向上放出一条线，反复调整线形，

then use the rope and nail to release a line along the way andadjust the alignment repeatedly.

然后用红铅笔在这条线上划出与横线垂直的纵线，形成十字线，在打入立柱时，

then draw a vertical line perpendicular to the horizontal line witha red pencil to form a cross line. when entering the column,

严格按立柱距十字线中心距离打入，这样就保证了立柱在纵向上的顺直度。

strictly according to the distance between the column and thecenter of the cross line, so as to ensure the vertical straightnessof the column.