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Black Anodized Extrusion Bars
Black anodized extrusion bars are aluminum profiles that undergo an electrochemical anodizing process to form a black oxide layer on the surface. Shanghai Huishuo Aluminum Technology Co., Ltd. produces these bars through hot extrusion and in-house black anodizing at its three production bases in Shanghai, Anhui, and Jiangsu. With over 16 years of aluminum profile customization and processing experience, the company delivers black anodized bars in standard series and custom cross-sections for structural, functional, and decorative applications.
Black anodizing is performed on extruded aluminum bars to create a uniform dark surface with controlled thickness and color consistency. The process seals the oxide layer, which supports corrosion resistance and surface durability in indoor and outdoor environments.
Product Overview
Black anodized extrusion bars are made from aluminum alloys such as 6063, 6005, and 6061. The base profile is extruded to the required cross-section, cut to length, and then anodized in black. The resulting oxide layer is integrated with the aluminum surface rather than applied as a coating, so it does not peel or flake under normal use conditions.
Huishuo Aluminum operates oxidation lines in-house, allowing control over anodizing thickness, color uniformity, and sealing quality. Bars can be supplied in mill-cut lengths or machined to drawing with drilling, milling, tapping, and bending.
Core Advantages
- Over 16 years of experience in aluminum profile customization and processing
- Three production bases in Shanghai, Anhui, and Jiangsu covering approximately 30,000 square meters
- In-house black anodizing lines for color and thickness control
- One-stop services: extrusion, mold making, CNC machining, surface treatment, and frame assembly
- Custom mold development for non-standard cross-sections
- Production capacity for large-volume and urgent orders
Product Characteristics
| Material | Aluminum alloy 6063, 6005, 6061, or specified grade |
| Surface Finish | Black anodized, with optional sealing |
| Anodizing Thickness | Controllable according to application requirements |
| Color | Black, with batch color consistency control |
| Series | 20, 30, 40, 45, 60, 80, and other standard series |
| Length | Custom cut to specified dimensions |
| Machining | Drilling, milling, cutting, tapping, bending |
| Tolerance | Controllable according to drawing requirements |
Application Scenarios
Common Questions and Solutions
What is the difference between black anodized and black painted extrusion bars?
Black anodizing forms an oxide layer that is integrated with the aluminum surface through an electrochemical process. Black painting applies a coating on top of the surface. Anodized surfaces generally offer different wear and corrosion behavior compared with painted surfaces, and the choice depends on the application environment and appearance requirements.
Can the anodizing thickness be specified?
Yes. Huishuo Aluminum controls anodizing thickness according to customer requirements. Thickness affects corrosion resistance, wear resistance, and color depth. The appropriate thickness is determined by the application conditions and expected service environment.
Are black anodized bars suitable for outdoor use?
Black anodized aluminum bars are used in outdoor applications when the anodizing thickness and sealing process are appropriate for the environment. The oxide layer supports corrosion resistance, though prolonged exposure to certain conditions may affect appearance over time. Huishuo Aluminum can advise on suitable specifications based on the intended use.
Can black anodized bars be machined after anodizing?
Machining after anodizing removes the oxide layer at the cut or machined area, exposing the aluminum underneath. In many cases, machining is performed before anodizing so the finished surface remains intact. Huishuo Aluminum reviews the sequence of machining and anodizing with the customer during order processing.
Do you produce custom cross-sections in black anodized finish?
Yes. Huishuo Aluminum provides custom mold making for irregular profiles and applies black anodizing after extrusion. Customers can supply drawings or samples for evaluation, and the company handles mold design, extrusion, anodizing, and optional CNC machining.
What information is needed to quote a black anodized extrusion bar order?
Useful information includes the cross-section drawing or series, material grade, length, quantity, anodizing thickness or color requirements, machining operations, and tolerance requirements. Providing these details allows Huishuo Aluminum to review feasibility and prepare a quotation.
Precautions for Use
Store black anodized extrusion bars in a dry, ventilated area. Avoid contact with sharp objects that may scratch the anodized surface. When cutting or machining, follow safety procedures and use appropriate tools. For load-bearing structures, verify the structural design with qualified personnel. Clean with mild detergent and a soft cloth. Avoid abrasive cleaners, strong acids, and strong alkalis on anodized surfaces. Handle bars with care during transport and assembly to reduce surface damage.
