Shocking! This Magical Sheet is Reshaping the Landscape of Various Industries – A Complete Reveal of Galvanized Coils​

On the grand stage of industry, there is a material quietly exuding a remarkable glow, and that is the galvanized coil. Perhaps you are not as familiar with its name as you are with mobile phones or cars. However, in fact, galvanized coils have long penetrated every corner of life. From the houses that shelter us from wind and rain, to the cars we use for travel, and then to various is silently playing a household appliances, it crucial role and reshaping the landscape of numerous industries single – handedly. Among the key players in the galvanized coil market, Langzoholding has emerged as a significant force, making its mark across different aspects of the value chain.​

I. Where Does the Magical Coating Come From?​

As the name implies, a galvanized coil is a thin steel sheet with a layer of zinc attached to its surface. Don’t underestimate this thin layer of zinc; it is the “loyal guard” of the steel sheet. Currently, galvanized coils are mainly produced using the continuous galvanizing process. Imagine a coiled steel sheet, like a silver dragon, slowly entering a plating bath filled with molten zinc. Under the action of high temperature, the zinc liquid, like active little elves, quickly adheres to the surface of the steel sheet, evenly covering every inch of the steel sheet and endowing the steel sheet with new protective properties. There is also an alloyed galvanized steel sheet, whose birth is even more wonderful. After the hot – dipping method coats the steel sheet with a zinc “coat”, it is immediately heated to around 500 °C. At this time, zinc and iron, like close partners, quickly undergo a chemical reaction to form a special alloy coating. This coating not only gives the galvanized coil good paint adhesion but also performs better in welding. Langzoholding has been investing in research and development to optimize these production processes, ensuring high – quality galvanized coils that meet the diverse needs of the market.​

II. Diverse Classifications, Each with Its Own Skills​

The galvanized coil family is extremely large, with numerous members, and each one has unique “abilities”.​

In terms of performance levels, there is grade 01 for general purposes, like a versatile handyman in life, ready to be used wherever needed. Grade 02 for mechanical seaming plays a key role in structures that require tight seaming. Its zinc layer weight code must not exceed Z350 to ensure stable operation in specific scenarios. Grade 03 for stamping focuses on the stamping processing field. The thickness range is ≥0.4mm, and the zinc layer weight does not exceed Z275, enabling it to maintain a good shape during the stamping process. There are also grade 04 for deep drawing, grade 05 for special killed steel deep drawing, and grade 06 for non – aging extra – deep drawing. They demonstrate excellent flexibility and stability when facing complex deep – drawing processes. In addition, galvanized coils of structural grades 220, 250, 280, 320, 350, 400, 450, and 550 are the mainstays in the construction and other structural fields. However, it should be noted that steel sheets with a thickness <0.4mm are not applicable to grades 220, 250, 280, and 320. Different grades show their prowess in their respective fields of expertise.​

There are also differences in base material types. Cold – rolled coil and hot – rolled pickled coil (code H) each have their own unique “personalities”. Galvanized coils made from cold – rolled coil have a smoother and more delicate surface, like a carefully polished work of art. While galvanized coils made from hot – rolled pickled coil have more advantages in some performance aspects. For example, in some occasions where high strength is required, it can play a better role.​

The types and coating weights of double – sided equal – thickness zinc coatings are also extremely diverse. From the lighter (60) (Z60) to the heavier 600 (Z600), different coating weights are suitable for different usage environments. For example, in some outdoor environments with strong corrosion, heavier – coated galvanized coils may be needed to provide more durable protection. While in a relatively mild indoor environment, lighter – coated galvanized coils are sufficient. Moreover, the existence of differential – thickness coatings even meets the needs of some special scenarios. It can provide different zinc layer weights on both sides of the steel sheet, just like equipping different “equipment” for different “tasks”.​

The surface structure of the zinc layer also has its own characteristics. Normal spangle (NNS) is like blooming snowflakes, with a unique aesthetic feeling. Small spangle (MMS) is more delicate and compact. Zero spangle (FFS) has a uniform and simple appearance. The zinc – iron alloy coating (ZFZFS) has a dark – gray appearance. Although it has no metallic luster, it has an irreplaceable role in specific fields. For example, in some occasions where direct painting is required, it can perfectly combine with the paint.​

The surface quality ranges from ordinary surface (FA) to better – quality surface (FB), and then to high – quality surface (FC), with the quality gradually improving. Galvanized coils with a high – quality surface are like exquisite handicrafts, with a smooth and flat surface and very few flaws, which can meet the requirements of some industries with extremely high appearance requirements. There are also a variety of surface treatment methods. Passivation (C) can reduce rust (white rust) generated under humid storage and transportation conditions and extend the service life of galvanized coils. Oiling (O) is like putting a protective film on galvanized coils, further reducing the risk of rust in a humid environment. And this layer of oil can be removed with a degreaser that does not damage the zinc layer. Lacquer sealing (L) provides an additional anti – corrosion effect, especially endowing galvanized coils with fingerprint – resistant properties and improving lubricity during forming, providing a good adhesion bottom layer for subsequent coatings. Phosphating (P) can improve the adhesion and anti – corrosion properties of coatings, reduce the risk of corrosion during storage and transportation, and when used with suitable lubricants, can also enhance forming performance. Of course, if the orderer has special requirements and is willing to assume corresponding responsibilities, non – treatment (U) can also be selected. Langzoholding offers a wide range of galvanized coil products, covering all these classifications, catering to different industries and customer needs.​

III. Making Great Achievements in Industries, with an Impact Beyond Imagination​

In the construction industry, galvanized coils are the “unsung heroes”. It is an important part of the building structure, from the frame of the house to the roof covering, and its presence is indispensable. Its excellent corrosion – resistance ensures that the building remains as solid as ever under the baptism of wind and rain, greatly extending the service life of the building. Moreover, the diverse appearance of galvanized coils can meet the needs of different architectural styles. Whether it is a modern and simple high – rise building or an artistic villa, it can be perfectly adapted. Langzoholding’s galvanized coils have been used in many large – scale construction projects, contributing to the durability and aesthetics of buildings.​

In the automotive manufacturing field, galvanized coils also play a key role. In the manufacture of car bodies, galvanized coils are widely used. It can not only improve the strength and rigidity of the car body, ensuring the safety of passengers, but also effectively prevent the car body from rusting. Imagine if the car body is not protected by galvanized coils, during daily driving, facing rain, dust, and various complex road conditions, the car body will soon be corroded, which not only affects the appearance but also endangers driving safety. In addition, with the automotive industry’s pursuit of environmental protection and lightweighting, galvanized coils are also constantly being upgraded. By optimizing the coating process and materials, while ensuring performance, their own weight is reduced, contributing to energy conservation and emission reduction in the automotive industry. Langzoholding collaborates with automotive manufacturers to develop galvanized coils that meet the strict requirements of the automotive industry, helping to enhance the overall quality of vehicles.​

The home appliance industry is also closely related to galvanized coils. The outer shells of household appliances such as refrigerators, air conditioners, and washing machines at home are often made of galvanized coils. The good formability of galvanized coils enables the outer shells of appliances to be processed into various beautiful and practical shapes. At the same time, its corrosion – resistance ensures that the outer shells of appliances will not rust or deform during long – term use, always maintaining a good appearance and performance. Moreover, galvanized coils with special surface treatments can also meet the requirements of the home appliance industry for surface texture and touch. For example, galvanized coils with fingerprint – resistant properties make the outer shells of appliances easier to clean, enhancing the user experience. Langzoholding supplies high – quality galvanized coils to leading home appliance manufacturers, enabling them to produce reliable and attractive products.​

IV. The Market is Changing with Both Opportunities and Challenges​

In recent years, the galvanized coil market has been full of ups and downs. In terms of demand, although various favorable policies have been frequently introduced in the domestic real estate market, from specific data, from January to November 2024, the cumulative investment in national real estate development was 9,363.4 billion yuan, a year – on – year decrease of 10.4%. The cumulative completed area of real estate was 481.51 million square meters, a year – on – year decline of 23%. The newly started construction area of real estate was 673.08 million square meters, a year – on – year decline of 23%. As an important downstream consumption field of zinc, the poor performance of construction – related project construction data has continuously dragged down the order performance of domestic galvanized sheet plants. In the automotive industry, in 2024, China’s automobile production reached 31.282 million units, a year – on – year increase of 3.70%. The sales volume reached 31.436 million units, a year – on – year increase of 4.50%, still showing strong performance. However, the market share of new energy vehicles increased from about 30% in 2023 to 40%, while the production and sales of traditional fuel vehicles decreased by 10% year – on – year. Since galvanized sheets are mainly used in some traditional mid – to – high – end fuel vehicle models, the growth in demand for galvanized sheets in the automotive industry is limited. However, in terms of domestic demand, in the first half of 2024, domestic policies such as “trade – in for new” were introduced, and local governments also responded by launching relevant replacement subsidies. With the continuous implementation of relevant policies, domestic home appliance – related orders improved in the second half of the year. In addition, China’s home appliance exports performed relatively strongly in 2024. Affected by export promotion and policy promotion, the production of white goods from January to November 2024 was the same as that in 2023. With the data for December added, it is expected that the orders for galvanized sheets in the home appliance industry in 2024 will increase compared with 2023.​

In terms of exports, since April 2024, countries or organizations such as Colombia, Ukraine, Pakistan, Brazil, and the Eurasian Economic Commission have successively launched anti – dumping investigations on Chinese galvanized sheet coils. However, from January to November 2024, China’s cumulative exports of galvanized sheets reached 11.716 million tons, a year – on – year increase of 16.1%. The continuous anti – dumping investigations have not yet had a significant impact. Moreover, in 2024, the price of galvanized sheets showed a significant decline compared with 2023, and the price advantage also contributed a lot to the strong exports of Chinese galvanized sheets in 2024.​

Looking to the future, currently, the relevant construction start and construction data have not yet shown a significant improvement. In the automotive sector, it is expected that the proportion of new energy vehicles will continue to increase in the future. Considering the possible disturbances in the global foreign trade market in 2025, it is uncertain whether the exports of home appliances and galvanized sheets can remain strong. In the case of no longer growing demand in each terminal sector, the development of Chinese galvanized sheets is expected to be hindered to a certain extent. However, challenges and opportunities coexist. With the continuous progress of science and technology, if galvanized coil manufacturers can continue to innovate and develop products with more performance advantages, more environmental friendliness, and better meeting market demands, they may be able to open up a new world in this ever – changing market. Langzoholding is well – positioned to navigate these market changes, leveraging its technological capabilities and market insights to develop innovative galvanized coil solutions and expand its market presence.​

Galvanized coils, this magical sheet, with its unique charm and wide applications, profoundly affects the development of numerous industries. In the future, it will surely continue to shine on the industrial stage and bring more convenience and surprises to our lives. Let’s wait and see and witness it writing a new chapter in the market tide, with Langzoholding playing an important role in this exciting journey.