Those engaged in the thermal insulation industry should know that with the higher requirements and use demand for materials, aluminum sheet (i.e. aluminum coil) has gradually replaced galvanized iron sheet because of its good thermal insulation and rust prevention effect, and has become the first choice of thermal insulation materials such as power plants and chemical plants. In particular, aluminum sheet material is particularly important in the transformation and maintenance of thermal insulation tanks and pipelines in some large power plants and chemical plants.

Considering the cost compression and the current fierce market competition, the construction unit continues to seek products with lower prices in the process of purchasing aluminum sheet. In order to cater to customers, aluminum sheet suppliers will certainly try their best to win orders under the condition of ensuring profits, which also leads to the continuous occurrence of mixed materials and fraud in the market.

If purchasers purchase with the mentality of greedy for small and cheap, they will fall into the trap of inferior materials step by step. Therefore, Xiaobian puts forward some advice and suggestions here.

Compare prices more and take a compromise price. Don't be greedy for cheap.

At present, there are two kinds of aluminum sheets: 1060 and 3003, of which 1060 is pure aluminum sheet and 3003 is aluminum alloy. As the name suggests, the price of 3003 is higher than that of 1060. We should be alert to the cheating of suppliers and replace them with 1060.

When purchasing, many units often say what thickness I need, such as 0.5mm thick aluminum sheet. If you purchase according to square, you should note that according to the national standard, the tolerance range is + - 0.03mm, that is to say, the thickness of national standard aluminum sheet provided by the supplier cannot be less than 0.47mm. Because of your low price, many suppliers may replace 0.45mm for you in order to ensure profits. So be sure to measure well when receiving the goods.

As for overweight, at present, the settlement of the industry is based on the net weight, that is to say, the accessories (such as packaging and roll core) are not weighted. In addition, because most of the materials are sent directly to the construction site, many sites cannot be overweight, which gives many suppliers the opportunity to drill loopholes, and the phenomenon of false weight will appear.. Xiaobian suggested that if you can't overload the site, you can find the delivery logistics to look at the weight list of the logistics, and then remove the gross weight of about 50kg (wooden pallet, packaging, roll core, etc.), which should be about the same.

The most common problem in the purchase of aluminum skin is the oxidation of aluminum skin. Generally, the oxidation is because the coil material is exposed to water or rain before use, and the surface will form a urine alkali or black stain surface similar to fire, so it can't be used.. So be sure to check the surface when you receive the goods. In addition, before use, you must store it in a dry warehouse and don't get wet.. In this case, it is likely to be corroded. After you confirm the receipt, the manufacturer cannot return the goods to you because of the transfer of goods rights and corrosion.

At present, there are many materials. In order to reduce the production cost, the aluminum sheet is not annealed, that is, the aluminum sheet is hard. If you need to bend continuously during the construction process, it is recommended not to choose this material. You must choose the H24 material for annealing. Although the price will be slightly higher, it can reassure you and avoid material waste. In addition, some materials are directly made of molten aluminum with high purity, while some materials are made of half waste aluminum and half aluminum ingots. In terms of technology, this is why the price of some aluminum sheets is particularly low and some will be higher.