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Leading companies such as Baosteel, Wuhan Iron & Steel, Nippon Steel, and Shougang Corporation are driving breakthroughs in ultra-thin tinplate materials, environmentally friendly processes,s and precision manufacturing - capabilities that are critical to meet surging demand in food packaging, renewable energy, and high-tech applications. Promisteel has excellent relationships with these companies, so if you are interested in tinplate, please feel free to contact us.
- Baosteel's tin-plated plate production
- WISCO Nippon Steel (Wuhan) Tinplate
- HSC Group
- Shougang Corporation tin-plated plate production
- Handan Jintai Packaging Material Co., Ltd
- Wuxi Zhongcai Group in tin-plated plate production
- Zhongyue Tinplate Co., Ltd & POSCO (Qinhuangdao) Tinplate Industry Co., Ltd
- Unity Tinplate
- Guangzhou Pacific Tinplate
- Jiangsu Youfu Sheet Metal Technology Co., Ltd.
Baosteel's tin-plated plate production scale and main technical advantages are as follows:
Production scale
- Overall production capacity: Baosteel has 2 tin-plating lines with a total design capacity of 400,000 tonnes/year.
- Capacity of special products: In the first half of 2024, the output of secondary cold rolled tin-plated and chromium-plated plates reached 44,864 tonnes, and the output has been rising month by month, and it has the production capacity of more than 100,000 tonnes per year.
Major technological advantages
- Technology
Leading in low carbon technology: In February 2024, the first domestic tin-plated product with low carbon emission to be supplied in mass production was officially rolled out of the tin-chrome co-line unit of Baosteel's Baoshan Base Cold Rolling Mill, reducing the carbon footprint of the product by more than 30%.2 o Application of new plating solution: Developed a new plating solution with a low carbon footprint.
Application of new plating solution: A new generation of MSA tin plating process system based on a new type of Methanesulfonic Acid (MSA) tin plating solution was developed, which overcame the shortcomings of poor stability of the tin plating solution and high amount of tin sludge in the earlier MSA tin plating process.
Secondary Cold Rolling Process: It is the only enterprise in China that has mastered the consistent production process of secondary cold rolled products and realized batch and stable production, and the thickness of secondary cold rolled tin-plated and chromium-plated products has been thinned and the strength has been improved.
- Equipment Technology
High-speed thin material production: the world's thinnest and fastest tin-plating unit No. 2 of the Cold Rolled Thin Plate Mill of Baosteel Branch, which is capable of coating strips up to 1,050 mm in width and 0.1 mm in thickness, with a process section speed of up to 800 meters per minute4.
Advanced continuous annealing units: with an annual handling capacity of 400,000 tonnes, the continuous annealing units mainly produce tin-plated and chromium-plated raw sheets, featuring extremely thin product specifications, high annealing temperatures, and a high degree of automation.
- Quality Control
Full-process quality control: establish a full-process quality control system, expand quality inspection means, and carry out strict quality control in the entire process of tin-plated substrate production from steelmaking, hot rolling, cold rolling to annealing16.
High dimensional accuracy: able to produce tin-plated products with high dimensional accuracy to meet the strict requirements of different customers for product specifications
Background strength: constructed and operated by a joint venture between China Baowu Iron & Steel Group Company Limited and Nippon Steel Co.
Product Positioning: Aiming at the domestic and international high-end food packaging market, the products are high-end food-grade tin-plated boards and tin-plated raw boards.
Capacity: Designed capacity is 800,000 tonnes/year, with an annual production capacity of 400,000 tonnes of tin-plated coils and 400,000 tonnes of tin-plated plates and very thin cold plates.
Technological advantage: Introducing Japan Steel's mature continuous annealing technology and adopting insoluble anode tin-plating production technology to achieve consistent quality management from steelmaking - hot rolling - cold rolling - annealing - tin-plating.
Technological innovation: more than 20 digital advanced technologies such as smart rolling, smart transport, and automatic inspection are applied. The first set of continuous annealing units developed independently can improve the performance of tin-plated plates.
Product quality: The thinnest tin-plated plate product can be up to 0.12 mm, the highest strength can be up to 620 MPa, the tolerance range of thickness can be controlled at ±0.003 mm, and the tolerance target of yield tensile strength is ±30 MPa.
In the first year of 2024, we will be able to produce tin-plated plate products of up to 0.12 mm and 620 MPa.
Market performance: Food grade orders increased by 13.9% year-on-year in the first quarter of 2024, with 80% of orders for high-end tin-plated sheets, and export orders increased by 20% compared to the same period last year.
- Background strength: Shougang Group's listed steel companies, the existing Qianshun, and Jingtang two bases, are one of the leading enterprises of domestic high-quality plate.
- Market position: tin-plated plate has achieved full coverage of high-end customers, and entered the first square of domestic tin-plated plate manufacturers.
- Technical advantage: the company has a leading edge in technology, equipment, certification, etc., and its high-end products accounted for a continuous increase in the proportion, to protect the industry boom in the low point and still have a better profitability performance.
Handan Jintai Packaging Material Co., Ltd. in the production of tin-plated boards are as follows:
Production scale
- Production capacity and output: The annual production capacity reaches more than 1 million tonnes. The company's annual production capacity is 1.1 million tonnes, of which tin-plated sheets, as one of the main products, have a considerable production capacity7.
- Order situation: A stable cooperation relationship has been established with many domestic and international first-class enterprises, and the products are sold well in more than 70 countries and regions, for example, there is an overseas order of 5,000 tonnes of tinplate under production for be sent to Brazil in 2024.
Technology
- Core technology: Innovative use of ultra-thin steel strip rolling method in single-stand reversible mill, breaking through the lower limit of the thickness of the traditional tin-plated plate, producing ultra-thin tinplate with a thickness of only 0.11 mm and obtaining the national invention patent. The tinplate can be made from 2.75 to 3.0 mm thick hot rolled strip, rolled in 6 passes on a mill with a rolling force of 9000 kN1.
- Process optimization: High-speed rolling of the ultra-thin strip is achieved by adjusting the emulsion condition, compressing the number of rolling passes, and increasing the pass under pressure rate, which improves the capacity and efficiency of the mill.
- Quality control: Introducing automatic production and testing equipment, so the error of the same batch of products is no more than 0.02 mm; building an MES production management system, that can trace the products.
Product Features
- Complete specifications: In the tinplate industry in China, a single production base has the most complete specifications and the most complete coverage of material hardness25.
- Wide range of applications: the products are widely used in food packaging, tin can making, and other industries.
Production equipment
- We have the domestic leading six-roll reversible rolling mill, all-hydrogen annealing furnace, continuous annealing unit introduced from Japan's Nippon Steel technology, double-rack leveling machine, tin-plating line, and other advanced production equipment.
- Scale of production capacity: specializing in the production and sale of a wide range of plates, of which the annual production capacity of tin-plated coils is 160,000 tonnes.
- Technical advantages: It has the first hot aluminum-zinc-silicon plating production line and aluminum-plated plate production line with independent intellectual property rights in China, advanced professional production equipment and mature technology, as well as a team of high-quality professional management and technical personnel.
Zhongyue Tinplate Co., Ltd. has Zhongshan Zhongyue Tinplate Industry Co., Ltd. and Zhongyue POSCO (Qinhuangdao) Tinplate Industry Co., Ltd. whose tin-plated plate production scale and technology are as follows:
Zhongshan Zhongyue Tinplate Industry Co.Ltd
- Production scale
Total production capacity: The annual production scale of the company is 240,000 tonnes of tin-plated and chromium-plated thin steel sheets, 20,000 tonnes of coated iron, and 150,000 tonnes of tinplate substrates (cold rolled thin steel sheets).
Historical development of production capacity: In 1989, we started to build 1# tinplate production line with an annual production capacity of 50,000 tonnes; in 1992, the annual production scale was expanded to 120,000 tonnes of tinplate; in 2004, the production scale was enlarged to 200,000 tonnes of tinplate series products per year; in 2007, we put into operation the production line of tinplate substrate with an annual production capacity of 150,000 tonnes, and the company now has a production capacity of 150,000 tonnes of tinplate substrate and nearly 500,000 tonnes of tinplate. production capacity.
- Technical situation
Production standard: The products are manufactured in strict accordance with GB/T2520-2000 standard and ISO11950:1995 (E) international standard.
Technological innovation: In 1996, we successfully developed low-chromium passivated tin-plated sheet products, and obtained the national invention patent in 2000. The company is a high-tech enterprise in Guangdong Province and has been honored and rewarded by national, provincial, and municipal governments and relevant departments many times.
Zhongyue POSCO (Qinhuangdao) Tinplate Industry Co.
- Scale of production: The total investment is USD 60 million. The company formally started production on 28 February 2008 and has a production line with an annual output of 250,000 tonnes of tin-plated thin steel sheets.
- Technical situation
- Production process: The production line adopts the international advanced-level production process, which is the faster and more advanced tin plating production line in Asia.
- Quality Certification: The company has passed the Quality, Environment, and Occupational Health and Safety Integrated Management System (QEHSMS) and Food Safety Management System (HACCP) certification and obtained the certificate.
- Product Application: The products are mainly used for milk powder cans, beverage cans, food and fruit and vegetable cans, and other corrosion-resistant, non-toxic, and high-grade packaging purposes.
Production Scale
- Fujian Unity Tinplate Co., Ltd.1: It was founded in March 1995 with a total investment of 100 million US dollars and introduced a tin-plated and branded steel production line at the time of putting into operation in October 1996, with an annual production capacity of 180,000 tonnes of tin-plated and branded steel sheets as well as high-quality tinplates in various sizes. In 2004, the company increased its capital by 60 million US dollars, built a factory building of more than 4,000 square meters, and added a production line with an annual output of 150,000 tonnes of tinning iron. According to the information from the job fair, the annual production capacity reaches 200,000 tonnes. - -
- Zhangzhou Unity Tinplate Co., Ltd. was established with a joint investment of US$232 million by Unity Industrial Co., Ltd. of Taiwan and JFE of Japan, with an annual production capacity of 150,000 tonnes of high-quality tin-plated thin steel sheets.
- Jiangsu Unity Tinplate Co., Ltd. was established by Cayman Jiangsu Unity Holdings Co., Ltd. and JFE Steel Co., Ltd. with a total investment of US$90 million. Although the production capacity of tin-plated sheets has not been specified, the company has introduced first-class technology and equipment for the production of tin-plated sheets and possesses a certain scale of production capacity.
Main technologies
- Introduction of advanced equipment and technologies:
- Jiangsu Unity Tinplate Co., Ltd. has introduced international first-class technology and equipment for the production of tin-plated sheets from Kawasaki Steel Corporation of Japan, and the whole production line adopts a fully automatic computer network system for quality and production monitoring. After the capital increase in January 2000, Fujian Unity Tinplate Co., Ltd. introduced Japan's most advanced Fuji PRIMEA-P451 two-color printing machine, Fuji C450 rapid coating machine, Germany LTG drying room and Japan's fully computer-controlled continuous tanning machine and other high-efficiency automated equipment.
- Automated production and management: The enterprise management adopts a management information system (MIS), computerized management, and a high degree of automation from production to quality control, which helps to improve production efficiency and product quality stability.
- Product Quality and Characteristics: The products are widely used in many fields such as food cans, beverage cans, tea cans, etc., which can meet the quality requirements of tinned sheets in different industries, for example, tinned sheets used for food packaging have strict quality control in terms of corrosion resistance, non-toxicity, and odourlessness.
The production scale and main technologies of tinplate of Guangzhou Pacific Tinplate are as follows
- Production scale
According to public information, except for 2 sets of tin plating units in Baosteel 1420 Cold Rolling Mill, the production capacity of tin plating units of Guangzhou Pacific Tinplate Co., Ltd. after technological upgrade is higher than that of most of the other tin plating units in China, and the production capacity of a single set of units is more than 150,000 t/a.2 Main technologies
- Process technology
Production process optimization: advanced process flow may be adopted, covering hot rolling, pickling, cold rolling, annealing, leveling, electroplating, etc., with more precise parameter control of each process to ensure product quality.
Electroplating technology enhancement: There are certain technical advantages in the tin plating process, which can achieve a more uniform distribution of the in-plating layer and ensure the corrosion resistance weldability and other properties of tin-plated plates. Advanced plating solution formulation and plating equipment may be applied to improve the efficiency and quality of tin plating.
- Quality control technology
On-line inspection technology: Equipped with advanced online inspection equipment, such as laser surface inspection and magnetic leakage tiny inclusions inspection, etc., 90% of surface defects as well as internal tiny inclusions can be detected when the strip is running at high speed, to detect and deal with product quality problems in time.
Thickness and precision control: There are mature technical means to control the thickness tolerance and shear precision of tin-plated plates so that the thickness of the product is uniform and the precision meets the high standard requirements.
- Equipment technology
Application of advanced units: The tin-plating units have been technologically upgraded to have high productivity and stability, and may adopt advanced technology equipment such as high-density current cleaning, stretch straightening machine, insoluble anode, adjustable edge cover, mixed-heat soft melting, etc.
Automation and informatization: The production process may be automated and informative to a higher degree of management through a computer control system to precisely operate and monitor the production equipment, improve production efficiency and product consistency, and reduce manual operation errors.
Production scale
- Overall production capacity: With a total investment of RMB 2.5 billion, the company can produce 800,000 tonnes of tinplate annually25.
- Stage production: From January to May 2024, the production will reach 230,000 tonnes, of which 80,000 tonnes will be exported1 .
- Project expansion: Since April 2023, the company has increased investment of RMB 1 billion to build a project with an annual output of 300,000 tonnes of chrome-plated tinplate production line, with one continuous retreat line, one chrome-plated line, one double-frame leveling line, one straightening line and its ancillary facilities, which will be put into operation at the beginning of August 2024.
Main technologies
- Production Line Technology
Continuous annealing line technology: the continuous annealing line with independent intellectual property rights was successfully commissioned on 27 July 2024, achieving a major leap from low-end BA sheet to high-end food-grade CA sheet, and capable of producing food-grade tinplates in compliance with international high-end standards.
Cold rolling technology: the first high-precision six-stand cold rolling unit production line in China, which can ensure high precision and quality of products.
- Supporting Technology and Facilities
Advanced ancillary equipment: The ancillary equipment includes pickling units, high-speed degreasing units, full hydrogen hood annealing furnaces, single and double rack leveling units, high-speed rewinding units, insoluble tin plating units, and other main equipment, and the whole process runs stably, efficiently, energy-saving and environmentally friendly4.
Testing and R&D Centre: There is an international first-class product R&D and testing center, which has formed a technological innovation and quality assurance system covering product R&D, process testing, equipment safeguard, quality control,l and so on.
- Quality Certification Technology:
- Passed ISO9001, ISO14001, FSSC22000, FDA, ROHS, REACH, HALAL, AEO, and other certificates, and reached international standards in quality control, environmental protection, food safety, and so on.
Here's why global manufacturers are turning to Chinese tinplate producer
• Pioneering sustainability: Baosteel's low-carbon tinplate slashes carbon footprints by 30%, while Hengpan Packaging integrates AI-driven smart rolling to minimize waste.
• Unmatched precision: Handan Jintai produces 0.11mm ultra-thin tinplate(patented), while Jiangsu Youfu achieves ±0.003mm thickness tolerance-surpassing ISO 11950 standards.
• Massive capacity: Combined annual output exceeds 3.5 million tonnes, with giants like Zhongyue Tinplate and Unity Tinplate dominating Asia's supply chains through JV partnerships with global leaders like Nippon Steel and JFE.
From 800m/min high-speed plating lines to military-grade corrosion resistance,
This report unveils the technological arsenal behind China's tinplate dominance. Discover how these innovations translate into 20% efficiency gains for global clients-and why 80% of high-end food-grade orders now originate from Chinese mills.
