Discussion on the production and development of th

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Discussion on the production and development of coated plates

the market and consumption of coated plates

1 the market and consumption of tinplate

in China, tinplate used in canning industry accounts for about 1/3 weak, beverage industry accounts for about 1/3 strong, light industry and others account for about 1/3 strong. From 2001 to 2004, the import volume of tinplate increased year by year, and the market share of domestic tinplate decreased slightly. At this time, the market demand was strong. During this period, no new tinplate units were put into operation, and the increase of domestic tinplate production was not as fast as the increase of market demand. From 2001 to 2004, the actual output of tinplate in China was 1.16 ~ 1.36 million T/A, the import volume was 31 ~ 590000 T/A, and the export volume was about 150000 T/a every year, with a market share of 87.4% to 75.9%

in the field of packaging, tinplate is still the preferred material for food that requires strong and well sealed packaging or needs to be stored for a long time. The domestic beverage industry still has market potential. The reason is that the price is cheaper than aluminum plate, but the beverage packaging requires tinplate to be very thin, high strength, good stamping performance and great technical difficulty. In short, there is still room for tinplate market

2 market and consumption of galvanized sheet and color coated sheet

the structure of hot-dip galvanized sheet and color coated sheet in China is similar, mainly consumed in the construction industry, accounting for about 70% - 80%, followed by light industry, household appliances, transportation, shipping, railway, agriculture and animal husbandry, but about 5% of galvanized sheet in China is used in the automotive industry

according to the statistical data of the Steel Association and the customs, the output of galvanized sheet increased year by year. From 2001 to 2003, the output was 2.2 ~ 2.67 million T/A, the import volume was similar to the output, and the export volume was about 100000 t/A. since 2004, the units built during the steel structure adjustment have played a role in succession, the output increased significantly, the import volume decreased, the export volume increased, and the market share increased. In 2004, the Steel Association counted the output of galvanized sheet as 4.17 million T/A, In the first half of 2005, the month on month output growth was even greater. The situation of color coated boards is similar. However, due to the construction of too many hot-dip galvanizing and color coating units in recent years, including too many private enterprises outside the metallurgical industry, its output is difficult to be included in the statistical data of the Steel Association, which brings considerable difficulties to market research

in 2016 and 2017, the actual structural yield of the company increased by 2.02 percentage points and 1.76 percentage points respectively

according to the statistical data of the Steel Association, the steel output increased by 25.8% year-on-year from January to September 2005, of which the coated laminate increased by 57.4% year-on-year, while the growth rate of downstream industries slowed down significantly, with the growth of steam vehicles increasing by 10%, household washing machines increasing by 14.4%, refrigerators 3.7%, real estate 23.6%, down about 5.3% year-on-year, The oversupply of the total production of coated plates has been formed. In short, in the future, the market competition of hot-dip galvanized plates and color coated plates will be fierce, and there will be phased overcapacity. Several hot issues

1 coordinated development of the coating industry and upstream resources

super large iron and steel enterprises have their own raw material systems. From smelting to cold rolling, they can adjust the steel grade and size specification in time according to the order, so as to achieve a short delivery cycle; Due to internal self supply, the transportation, packaging, oiling, passivation and other costs of intermediate links can be saved; Super large iron and steel enterprises also have blast furnaces, converters and coke ovens, which can produce by-product gas, and oxygen generators can produce by-product nitrogen and other beneficial energy; In addition, due to the large number of units it has built, the division of labor and specialized production of units can improve efficiency and stabilize product quality, which have enhanced its competitiveness. However, China's overall mineral resources are in short supply. Now super large iron and steel enterprises are actively looking for mineral resources and energy, signing long-term supply contracts or joint ventures with large foreign mines, such as Baosteel, WISCO, Shougang, Maanshan Iron and steel, Tangshan Iron and steel and other enterprises have successively invested in mining iron ore with Brazil and Australia to maintain their long-term competitiveness

enterprises that only produce coated laminates often do not have the above advantages, but most of them are domestic equipment, and they also have competitive advantages such as less investment, less depreciation, low financial expenses, low wages of workers, fewer retired workers, and light enterprise burden. In this way, enterprises should establish stable substrate supply channels, establish long-term cooperative relationships, or join large iron and steel groups

2 the rise in ore and energy prices has a relatively small impact on the coated plate, and the shortage of zinc market supply has a direct impact on the coated plate

since 2004, the prices of ore and energy have been rising, which has a direct impact on the cost of steel products, but the impact on the cost of hot-dip galvanized plate is relatively small, because hot-dip galvanized plate is a deep-processing product of steel, its additional cost is high, the added value is high, and the proportion of ore in the cost is small. In addition, the substrate of hot-dip galvanized sheet is mostly produced by long process, and some of its previous processes are negative energy consumption, which is more energy-saving than short process processes such as scrap steel and electric furnace. However, the price rise of zinc ingot directly affects the benefit of galvanized sheet. Since 2003, the steel market has been strong, and the rapid development of galvanized sheet production has resulted in a shortage of zinc concentrate. In 2002, the average price of zinc ingots was about 8600 yuan/T. in 2005, the price of zinc ingots usually rose to 25000 yuan/T, and in 2006, the price of zinc ingots was up to 38000 yuan/T. Global zinc resources are 1.9 billion tons, reserves are 220 million tons, and basic reserves are 460 million tons. The global zinc production and marketing gap has an increasing trend, and the price of zinc ingots continues to rise

3 it is recommended to implement the market access system for coated laminates of building materials

various raw materials (including coated laminates) for automobiles and household appliances are strictly controlled, and inferior materials are difficult to mix. The building materials market is huge, and the control is not strict. At present, although there are product standards for galvanized sheet and color coated sheet of building materials, many production enterprises do not implement them. Some production enterprises want to implement the standards and worry about raising product costs, so they are in a disadvantageous position in the market competition. Therefore, the state should take compulsory measures to establish a market access system, and prohibit those substandard galvanized plates and color coated plates from entering the market, so as to form a fair and orderly competition in the market and protect the interests of users and production enterprises

4 it is suggested to develop electroplated tin plate and electroplated zinc plate appropriately.

since 2000, the market of electroplated tin plate and electroplated zinc plate has been strong. In recent years, there are few new electroplated tin units and electroplated zinc units at home and abroad. Since the adjustment of China's steel structure, many cold rolling plants and coating plants have been built, but there are no cold rolling plants producing electroplated tin and electroplated zinc. In particular, there is a serious worldwide shortage of tin plated substrates. It is difficult to increase the output of tin plated substrates in a short time. Recently, the prices of hot-dip galvanized and color coated plates in the international and domestic markets have declined, but electroplated tin plates have increased significantly; The price of galvanized sheet in the international market also increased slightly. In the annual import of galvanized sheet in China, the proportion of electro galvanized sheet is not small. It can be seen that the market of electroplated tin plate and electroplated zinc plate in China is promising. The technical requirements for the production of electroplated tin plate and electro galvanized plate are very high, especially for the upstream process and substrate. It is suggested that the production system of electroplated tin plate and electro galvanized plate should be properly built in large iron and steel enterprises with conditions, and the research and development of electroplated tin substrate, electroplating zinc process and equipment should be carried out as soon as possible

5 promote the establishment of industry organizations

there are international lead and zinc organizations in the world, the color coating industry in the United States established NCCA in 1962, and the color coating industry in Europe has ECCA. Members' meetings are held regularly to exchange information, study the market, determine technical projects, statistical data, publish manuals and publications. However, there is no coating industry organization in China. It is suggested that major domestic coating enterprises jointly establish industry organizations to exchange information, resist unfair competition and deal with international trade disputes


at present, the production of coated plates in China has achieved unprecedented development and great achievements; However, there are also many problems, such as the shortage of tin plated substrates and electro galvanized sheets; The coating of hot-dip galvanized building materials and color coated plates is too thin, the product quality is poor, and the market is in disorderly competition. In the future, we will also face the problems of phased relative excess capacity of hot-dip galvanized and color coated plates. We can only continue to solve these problems, strengthen industry self-discipline, integrate into the international market, and survive in the competition. If the surface roughness is poor, it is not easy to deal with and develop

reprinted from: China Steel

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