Today, the application of iron fence is very common, from small families, courtyards, to roads, railways, riverbanks and borders, you can see it everywhere. That iron fence how to buy it? What is qualified and what is defective? There's a lot of stress in it. If you don't pay attention, you may lose millions.

鐵藝護欄網的選購原則：

Selection principle of Tieyi fence:

1、鋼材本身的質量。鋼管的用料規格尤其是厚度，是構成護欄的基本要素，質量一定要達到要求。它的硬度值也有要求，一般為159DPN。

1. The quality of the steel itself. The material specification of steel pipe, especially the thickness, is the basic element of guardrail, and the quality must meet the requirements. Its hardness value is also required, generally 159dpn.

2、鋼材的鍍鋅層。這是決定護欄網使用壽命的一個至關重要的因素，鍍鋅層越厚，耐腐蝕性就越好，使用壽命也就越長。正常情況下，鋅鋼鍍鋅管的管材表面含鋅量要達到60-80mm/㎡，鋅純度98.5%才算是合格。

2. Zinc coating on steel. This is a crucial factor to determine the service life of the fence. The thicker the galvanized layer, the better the corrosion resistance and the longer the service life. Under normal conditions, the zinc content on the surface of galvanized steel pipe should reach 60-80mm / m2, and the purity of zinc is 98.5%.

3、鐵藝護欄網的外部處理。鐵藝護欄網的一道生產工序，也就是表面噴塑處理，把鍍鋅管再次深加工。鋅鋼護欄工藝流程：機械加工→化學處理（去油→去灰→納 米陶化→鈍化）→靜電噴涂→固化（220°高溫仿搪瓷固化）經過多道工藝處理后，可達到30年不生銹。

3. External treatment of iron fence. Tieyi fence of a production process, that is, surface spray treatment, the galvanized pipe again deep processing. The technological process of zinc steel guardrail: machining → chemical treatment (degreasing → ash removing → nano ceramic → passivation) → electrostatic spraying → solidification (220 ℃) ° After multi process treatment, it can achieve 30 years of no rust.

如果用肉眼觀察的話，表面要光滑平整，迎著光看過去沒有凹凸不平的感覺，顏色要晶瑩剔透。如果是磨砂噴涂的話，手摸上去跟摸在1000目的砂紙上的感覺很形似，不反光，給人一種厚重的感覺。

If you use the naked eye to observe, the surface should be smooth and flat, and there should be no uneven feeling when you look at the light, and the color should be crystal clear. If it is frosted spray, the feeling of hand touch is very similar to that of touch on 1000 mesh sandpaper, it does not reflect light, giving people a heavy feeling.