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This section provides an overview for color anodizing as well as their applications and principles. Also, please take a look at the list of 17 color anodizing manufacturers and their company rankings. Here are the top-ranked color anodizing companies as of February, 2025: 1.Shanghai Metal Corporation, 2.SHINING Aluminum Packaging Co., ltd, 3.Norsk Hydro.
Table of Contents
Color anodized aluminum is an oxide film produced on the surface of aluminum by electrolytic treatment and colored by penetrating dye.
Anodizing is a technology that increases rust resistance by generating an artificial oxide film on the surface of aluminum and is characterized by its resistance to rust compared with solid aluminum. However, since anodized aluminum itself is colorless and transparent, colored anodizing requires a special technique.
Color anodized aluminum is colored by opening pores of about 10 μm in diameter in the oxide film produced by anodizing and allowing dye to permeate through them. Then, after the dye is absorbed, the pores are sealed, making it difficult for the dye to peel off and improving durability. Adding color to aluminum products not only improves their appearance but also improves wear and corrosion resistance.
Color anodized aluminum is unique in that it can change the color of an aluminum product. Furthermore, aluminum is widely used in every day and industrial products because it is lightweight and rust-resistant. It not only extends the life of products, but also contributes to improved design through color.
Specific applications include lunch boxes, kettles, pots, and computer frames. It is widely used for a variety of everyday products as well as industrial products, such as sports equipment and bicycle frames. Color anodized aluminum can change the appearance of a product, thereby enhancing its brand image and added value.
Color anodized aluminum can be colored in green, red, pink, blue, gold, or black, depending on the anodizer. By combining colors or creating patterns with different colors, a wider variety of design possibilities can be realized. It is one of the indispensable technologies for product manufacturing because it combines functionality and design.
Color anodizing may not work well if the amount of silicon or copper contained in the aluminum is too high. Typical aluminum die-cast products (e.g., ADC12) contain high levels of silicon and copper, which can cause the color to become lighter or the black color to turn gray.
Care should be taken when coloring, as this can detract from the product's attractiveness as a decorative item. In plating, metal ions in an electrolytic solution are reduced and deposited to form a metal plating on the surface of the object. Anodizing, on the other hand, dissolves the surface of aluminum with acid to form a film.
The film consists of a permeation film and a growth film. When specifying the film thickness, the amount of raising is less than that of plating, because the film is formed only by the dissolved amount.
Color anodized aluminum can be broadly classified into three types: single-color anodized aluminum, two-color anodized aluminum, and bright anodized aluminum. It is important to select the type of colored anodized aluminum that best suits the application.
Different shades and textures can be expressed depending on the thickness of the coating and the coloring method, resulting in products with excellent design characteristics.
Monochromatic aluminum is an anodized aluminum coating with only one color, mainly black, blue, red, or green. It is used to express a unified color tone, as the basic color tones are all available.
Two-color anodizing consists of alternating layers of two different anodized aluminum coatings, typically black and red, blue and red, green and blue, etc. Compared to monochromatic anodizing, two-color anodizing can express more unique tints, making it possible to create anodized aluminum coatings with excellent design characteristics.
Glossy anodizing is characterized by its high luster finish and metallic texture. Mainly used for silver, gold, and brass, it can produce a sense of high quality.
*Including some distributors, etc.
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Riverside Sheet Metal & Contracting, Inc. is a manufacturer, supplier, and installer of metal roofing and sheet metal-related products founded in 1997 and based in Massachusetts, USA. The company specializes in the custom fabrication and installation of architectural metal products, including aluminum gutters, copper pans, edge metals, hood vents, and chimney caps. It serves diverse industries across the United States, including residential, commercial, industrial, and institutional sectors. The company is part of the National Roofing Contractors Association and the North East Roofing Contractors Association.
Big City Manufacturing, established in 1976 and based in Houston, Texas, is a manufacturer and supplier of metal and plastic tags, labels and wholesale safety identification products. The company offers custom tags and nameplates in different grades of metal, types of paper and also in plastic for identification purposes. Its services has evolved to include screen printing, stamping, and industrial identification. The company serves various industries, including healthcare, aerospace, food and beverages, and petrochemicals, and automotive.
Eagle Aluminum is a Minneapolis-based supplier of industrial aluminum products founded in 1989. The company specializes in aluminum trims and extrusions. It boasts a wide array of products including Angles, Awning Profiles, Channels, Coves, Dividers, etc., and offers services such as aluminum finishes, custom extrusions, light fabrication, and product shipment. Its products find great usage in industries such as architectural millworks, cleanrooms, and advertisement sinages, among many others. The company is steadfast in providing fast delivery, great pricing, and personalized customer service.
Norsk Hydro, founded in 1905 and headquartered in Oslo, Norway, is a manufacturer and supplier of aluminum products and solutions across the complete aluminum value chain. The company's range of aluminum products includes low carbon and recycled aluminum, extruded profiles, precision tubes, and welded tubes. The aluminum products are utilized in diverse industries like construction, transportation, and manufacturing. Its renewable energy solutions play a significant role in supporting sustainable power generation and advancing industrial progress.
Southwest Aluminum Kunshan Co. Ltd., founded in 2015 and headquartered in Kunshan City, Jiangsu, China, is a manufacturer of precision aluminum tube parts. The company specializes in aluminum forging and ingot casting, and its main products include aviation-grade seamless aluminum tubing, aluminum tent poles, and motorcycle handlebars. It also produces super-lightweight law enforcement batons and vehicle suspension shock tubes. The company's services include custom product production, and it primarily works with private label and original equipment manufacturers.
Shanghai Metal Corporation, established in 1980 as a state-owned Shanghai Metal Materials Company headquartered in Shanghai, China, is a manufacturer and supplier specializing in metal materials and products. The company's metal offerings include aluminum, copper, stainless steel, galvanized steel, and steel products. It also provides metal machines for forming, cutting, bending, and processing. Additionally, the company offers various containers, gas cylinders, fire extinguishers, mechanical products, and electrical systems. These products find applications in various industries, such as automobile, construction and decoration, electrical and transformer components, machinery, and packaging. Other applications include oil, gas, and water pipelines, as well as boilers and tanks.
Profilati Alluminio, founded in 1963 in Caronno Pertusella, Italy, is a manufacturer of extruded profiles in aluminum alloy and medium-sized aluminum extrusions. The company’s range of products includes aluminum extrusion profiles in standard and special shapes for home & technical furnishings, electronics & electromechanical industries, lighting, automotive, and transport sectors. The company is firm on customer satisfaction and after sales support, and provides functional products and solutions to the Italian and international markets.
Wellste is a Chinese manufacturer of custom extruded aluminum products that was established in 1996. Based in Jingkou, Zhenjiang, the company produces a wide range of non-standard extruded aluminum products including pipes and tubes, T-slot systems, window or door profiles, and heat sinks. It has an annual production capacity of 100,000 tons and uses pure aluminum ingot for its products. Wellste also offers design, engineering, and OEM/ODM services to its clients in the renewable energy, architectural, electronics, and automotive sectors.
Technic, Inc. was founded in 1944 and is headquartered in Cranston, Rhode Island. The ISO 9001:2015 certified company is a manufacturer of specialty chemicals, surface finishing equipment, and analytical tools used in electronics, industrial, semiconductor, and solar industries. The company’s Automated & Manual Equipment division produces automated processing equipment, manual finishing equipment, anodizing equipment, and parts and supplies. The company’s Engineered Powders division offers a range of materials including powder and flake from silver, gold, palladium, and other metals.
Xiaoxian Ruiyi Commercial Trade Co., Ltd. is a China-based manufacturer, supplier, and trader of steel-based raw materials established in 1997 and headquartered in Suzhou, Anhui Province. The company offers steel plates, anodized aluminum sheets, Anti Slip Safety Tread Plates, Galvanized Steel and aluminum Coils, foils, Bar Grating, Perforated Plates, and Round Bars used in decoration, construction, transportation, electronics, aviation, aerospace, and weapons industries. The company uses computerized production control programs and has a quality facility offering metal analysis, sand control, physical testing, pressure testing, and electronic dimensional checking of its aluminum alloys.
Pailian Aluminium Profile Company Ltd, established in 1993, is a manufacturer and supplier of aluminium products based in Guangdong, China. The company provides comprehensive one-stop solutions, including custom design, manufacturing, surface treatment, and CNC deep processing. It can manufacture super large aluminum profiles exceeding 300mm, enhance drawing sizes, and create custom aluminum profiles tailored to the specific needs of global customers. It offers aluminium profile surface treatment, including polishing, brushing, sandblasting, powder coating, and wood grain treatment.
Ranking as of February 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Shanghai Metal Corporation |
14.3%
|
| 2 | SHINING Aluminum Packaging Co., ltd |
10.7%
|
| 3 | Norsk Hydro |
10.7%
|
| 4 | Technic Inc. |
10.7%
|
| 5 | Shenzhen Huayuan Precision Products Co., Ltd |
7.1%
|
| 6 | Southwest Aluminum Kunshan Co., Ltd |
7.1%
|
| 7 | Pailian Aluminium Profile Company Ltd |
7.1%
|
| 8 | PROFILATI ALLUMINIO SRL |
7.1%
|
| 9 | Big City Manufacturing |
7.1%
|
| 10 | Henan Huawei Aluminum Industry Co., Ltd. |
3.6%
|
Derivation Method
The ranking is calculated based on the click share within the color anodizing page as of February 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
10 | 62.5% |
|
United States of America
|
4 | 25.0% |
|
Norway
|
1 | 6.3% |
|
Italy
|
1 | 6.3% |
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