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Tianjin Haigang Steel Coil

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Industry Technology

2020-07

What should I do if galvanized strip steel develops mold?

2020-07-21

2020-07

Causes of Cracking in Galvanized Strip Steel

2020-07-13

2020-07

Does galvanized strip steel need to be cleaned?

Galvanized strip steel is widely used and has become an indispensable part of our daily lives. It is commonly employed in applications such as light steel framing, roofing, and ceilings. So, how should we clean hot-dip galvanized strip steel in our everyday life? Let’s now take a closer look at the essential guidelines for cleaning hot-dip galvanized strip steel. Over time, the surface of galvanized strip steel tends to accumulate contaminants such as machine oil, iron powder, and dust, which can adversely affect its quality. Therefore, cleaning hot-dip galvanized strip steel is absolutely necessary. Common methods for cleaning hot-dip galvanized strip steel include alkali brushing, alkali soaking, electrolytic cleaning, and hot-water rinsing. These cleaning methods...

2020-07-07

Does galvanized strip steel need to be cleaned?

2020-06

How should galvanized strip steel be selected?

If galvanized strip steel is frequently used in acidic environments, it must be processed using acid solutions during manufacturing. Some components of processing machinery are made from this strip steel, which helps prevent corrosion of the parts. After production, a series of tests must be conducted to determine whether the product meets quality standards: 1. When conducting these tests, we must first examine the product’s exterior, checking whether the surface color is bright and glossy, and then verify that the product’s dimensions meet the specified requirements. 2. We can measure the thickness of the coating on the product’s surface using precise measuring equipment. During measurement, the distance between the measurement point and the device should be less than 3 millimeters, and the spacing between products should be roughly consistent. For each measurement, we calculate the average value across multiple points. 3. After production, samples of the product must undergo quantitative testing, and the selected test items and methods must comply with applicable regulations. Products made from galvanized strip steel are widely used in many manufacturing industries, and their role is irreplaceable. The quality of the galvanizing process directly affects the product’s performance. Galvanized strip steel is manufactured from high-quality steel. The density and uniformity of the zinc coating directly influence its performance, and thus its quality significantly impacts the product’s usability. Currently, in China’s domestic market, aluminum-zinc coated materials are primarily used in construction. Their performance is three to four times better than that of single-galvanized materials. However, in today’s electronics industry, due to aesthetic considerations, hot-dip galvanized steel sheets are predominantly used, and hot-dip galvanizing is mainly applied in construction materials. Aluminum and zinc are the mainstream choices. Simply put, the most common hot-dip galvanized aluminum-zinc coatings are 55AL and 44.5Zn. The quality of the galvanizing process directly determines the material’s corrosion resistance and also affects the service life of many components. Throughout the production process, every step is inspected by dedicated personnel to ensure that the finished products meet standards and satisfy customer needs. So, how should one choose galvanized strip steel when purchasing it? First, you need to consider the thickness, width, and length of the strip steel required. Next, check whether the tin-plated strip steel has any patterns or markings, and pay attention to the specific requirements for the zinc coating. Finally, assess the oil coating—there are light oil coatings and heavy oil coatings. Additionally, there may be environmental protection requirements for galvanized strip steel. As for the quality of galvanized strip steel, the key factors are the material composition and heat treatment conditions, as well as the amount of zinc applied during hot-dip galvanizing. Generally speaking, hot-dip galvanizing refers to applying zinc coatings of 60 grams, 80 grams, or 120 grams per square meter. Nowadays, many factories only achieve a zinc coating weight of around 40 grams. The amount of zinc applied directly affects the pipe’s corrosion resistance. Poor-quality galvanized strip steel often exhibits surface cracks, typically caused by cracking during the annealing process or by using materials that are too hard and poorly annealed.

2020-06-29

How should galvanized strip steel be selected?

2020-06

Why does galvanized strip steel get moldy?

Galvanized strip steel is steel sheet that has been uniformly coated with a layer of zinc. Hot-dip galvanizing produces a coating that is both uniform and highly adhesive, with an exceptionally long service life. During the hot-dip galvanizing process, the zinc layer undergoes chemical and physical reactions with the steel substrate, forming a tightly structured zinc-iron alloy layer that integrates seamlessly with the steel strip, thus providing outstanding corrosion resistance. However, even under these conditions, we sometimes still observe mold growth on galvanized strip steel during use. This occurs because moisture can condense on the surface of hot-dip galvanized strip steel, and since zinc readily oxidizes in air, rust may form on its surface. When selecting hot-dip galvanized strip steel products, it’s important to pay attention to the thickness of the coating and the smoothness of the surface. Additionally, ensure that no corrosive substances come into contact with the surface of the hot-dip galvanized strip steel. Also, avoid placing hot-dip galvanized strip steel products indoors if the room temperature is excessively high or if the products have not yet fully dried.

2020-06-18

Why does galvanized strip steel get moldy?

2020-05

Uses of galvanized strip steel

Galvanized strip steel is a new type of material. Its principle lies in the fact that the surface of the steel sheet is coated with a layer of zinc, which leverages zinc’s physical properties to provide corrosion protection. As a new material, galvanized strip steel is most widely used in the construction and light industries, accounting for roughly two-fifths of its total applications. There is also significant market demand in other industries. Moreover, as a type of steel that has undergone corrosion-resistant treatment, galvanized strip steel is extensively employed in everyday life. However, due to its diverse applications and various processing methods, we may not always notice it—such as ventilation ducts in buildings or the surfaces of certain electrical appliances. After being aesthetically enhanced, these materials are often used in areas that remain hidden from view, like the back panels of refrigerators, for example.

2020-05-25

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We primarily produce various products including galvanized strip steel, pickled strip steel, and cold-rolled strip steel. These products are widely used in industries such as construction, mechanical manufacturing, automotive, and household appliances.

Contact Information

Company address:

Shuangtang High-end Hardware Products Industrial Park, Jinghai District, Tianjin City

Contact phone number:

(86-22) 68778999/ 68508999

Corporate email:
tjhaigang@tjhaigang.com

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