The good service life of Tieyi guardrail is inseparable from its main material hot-dip galvanized pipe and processing technology. But the hot-dip galvanized pipe is not effective, its zinc layer can not cover the same place will rust. The common place is the cross section left after the pipe is cut.

雖說熱浸鋅管材中的鋅層會滲透進(jìn)鋼材表面，但這并不代表著鋅層與鋼材的融合。這一點(diǎn)在橫截面上可以很清楚的看出來。管材進(jìn)行切割之后要怎樣處理橫截面才能防止其生銹呢？

Although the zinc layer in hot-dip galvanized pipe will penetrate into the steel surface, it does not mean the fusion of zinc layer and steel. This can be seen clearly in the cross section. How to deal with the cross section after cutting the pipe to prevent it from rusting?

答案很簡單，對于鐵藝護(hù)欄來說，管材進(jìn)行切割之后會在斷口橫截面出涂抹一層透明防銹漆。在防銹漆干透之后再進(jìn)行粉末噴涂加工就可。進(jìn)行噴涂時(shí)，粉末同樣也會覆蓋在橫截面上，以此保障橫截面不會生銹。

The answer is very simple. For Tieyi guardrail, a layer of transparent antirust paint will be applied on the cross section of fracture after pipe cutting. After the antirust paint is dry, powder spraying can be carried out. When spraying, the powder will also cover the cross section to ensure that the cross section will not rust.

對于鐵藝護(hù)欄而言，由于部分?jǐn)嗫谑切枰M(jìn)行焊接作業(yè)的，所以這時(shí)斷口就不能噴防銹漆了。而是在焊接完成后對于焊點(diǎn)進(jìn)行打磨補(bǔ)鋅作業(yè)，然后再進(jìn)行整體粉末噴涂。

For the iron guardrail, because part of the fracture is the need for welding operation, so at this time the fracture can not spray antirust paint. However, after welding, the solder joints are polished and supplemented with zinc, and then the whole powder spraying is carried out.