wrought iron fence

The use of wrought iron fences is now very common, ranging from small households to gates and courtyards, to roads and railways, to rivers and rivers, and everywhere. How to buy the wrought iron fence? What is qualified and what is defective? There are a lot of elegant things here, and you can lose millions if you don't pay attention.

The selection criteria for the iron fence network: the quality of the steel itself. The material standard for steel pipes, especially the thickness, is the basic element that constitutes the guardrail, and the quality must meet the requirements. Its hardness value is also required, generally 159DPN. The galvanized layer of steel. This is a crucial element in determining the service life of the fence. The thicker the galvanized layer, the better the corrosion resistance and the longer the service life.

 

Under normal circumstances, the zinc content of the zinc-steel galvanized pipe should reach 60-80mm/m2, and the zinc purity of 98.5% is considered qualified. External processing of the iron fence. The final production process of the iron fence network, that is, the appearance of plastic spray treatment, the galvanized pipe is further processed. Zinc steel guardrail process: mechanical processing → chemical treatment (de-oil → ash → nano-ceramic → passivation) → electrostatic spraying → curing (220 ° high-temperature imitation 珐琅 curing) after multi-process treatment, can reach 30 years without Rusty.

 

If you use the naked eye to investigate, the appearance should be smooth and flat, and the light should be seen in the past without the feeling of high and low, and the color should be crystal clear. If it is a matte spray, the hand touches and feels on the 1000 intention sandpaper is very similar, not reflective, giving a heavy feeling. The end is the price. Qualified products are generally 2.5 times the price of the substrate. If the price is too high, it is obviously fooling you. If the price is low, the quality will not be guaranteed.