Bent Aluminium Panels for Curtain Wall exist because buildings are not always flat. A curved tower, an angled atrium, a faceted entrance canopy, a barrel-vaulted roof — these forms cannot be clad with flat sheets without visible seams, faceted approximations, or compromised weather performance. Bending and forming allow a single panel to follow the building's geometry, maintaining a continuous surface, consistent shadow lines, and a weather seal that would be impossible to achieve with multiple small flat panels. The result is a facade that reads as the architect intended: smooth where it should be smooth, angular where it should be angular.

The forming process is where the engineering happens. Our CNC press brakes and roll-forming equipment shape the aluminium sheet to your specified radius or angle, with the bend line positioned to align with the panel module and the fixing sub-frame. For curved panels, we control spring-back through over-bending and verification, ensuring the finished radius matches the drawing. For folded panels, the edges are formed to interlock with adjacent panels or to create the shadow gap that defines the facade's rhythm. Panel thickness is selected based on the bend radius — tighter radii require thinner material — and we advise on the optimal specification during design review.
Shengxin has over 30 years of aluminium extrusion expertise and performs all panel forming in-house, alongside our extrusion, CNC machining, and coating operations. This integration means we can produce the bent panels, the supporting sub-frame profiles, and the finish — all under one roof, with one quality system and one point of accountability. For projects that require the structural depth of a floor-to-floor spanning system rather than a formed cladding skin, our aluminium curtain wall panel range covers the full mullion-and-transom assembly.
Features & Benefits
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Complex geometry capability: Panels can be formed to single or multi-radius curves, sharp folds, and three-dimensional shapes, enabling architectural forms that flat cladding cannot achieve.
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Continuous surface appearance: Bending reduces the number of panel joints on curved or angled facades, creating a smoother, more seamless visual result.
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Consistent weather performance: The formed panel retains the same interlocking edges and drainage details as a flat panel, so weather tightness is not compromised by the curvature.
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Radius verification: We control spring-back during forming and verify the finished radius against the drawing, ensuring the installed panel matches the architectural intent.
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Complete finish flexibility: Powder coating in any RAL colour, PVDF for exterior durability, or anodizing for a metallic look — all applied in-house after forming.
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Lightweight and non-combustible: Aluminium achieves Class A1/A2 fire classification while keeping formed panel weight low for easier handling and reduced structural load.
Forming Capabilities & Process Parameters
The achievable bend radius depends on panel thickness, alloy temper, and the forming method. Use this table as a guide for your design.
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Panel Thickness
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Minimum Bend Radius
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Forming Method
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Typical Application
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1.5 mm
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3 mm (2 × thickness)
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Press brake
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Sharp folds, edge details
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2.0 mm
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4 mm
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Press brake / roll forming
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Cassette panels, column covers
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3.0 mm
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12 mm
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Roll forming
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Large radius curves, barrel vaults
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4.0 mm
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24 mm
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Roll forming
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Structural formed panels, long spans
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Tighter radii may be possible with annealed tempers or special tooling. Contact our engineers to discuss your specific geometry.
Technical Specifications
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Base Material
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6063-T5 aluminium sheet and support frame extrusions
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Panel Thickness
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1.5 mm – 4.0 mm (selected per radius and span)
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Maximum Panel Size
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1500 mm × 4000 mm (formed panels)
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Forming Methods
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CNC press brake (folds and tight radii); roll forming (large curves)
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Surface Finish
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PVDF (AAMA 2605), powder coating (AAMA 2604), anodizing (Qualanod)
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Fire Classification
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Class A1/A2 per EN 13501-1 (non-combustible)
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Radius Tolerance
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±1 mm on formed radius (verified against drawing)
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Applicable Standards
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AAMA 2605, AAMA 2604, Qualanod, EN 13501-1, EN 755
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These formed panels sit alongside our broader aluminum wall panels range, which includes flat cladding, perforated systems, and bespoke facade solutions. For high-exposure elevations requiring maximum colour retention, the same panels are available with PVDF coating to AAMA 2605.
Applications of Bent Aluminium Panels for Curtain Wall
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Curved building facades: Towers and low-rise buildings with a curved footprint require panels formed to a consistent radius to maintain a smooth, continuous cladding surface.
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Angled and faceted geometries: Where a facade changes direction — at a corner, a setback, or a chamfer — folded panels create the crisp, defined edges that architectural design calls for.
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Column and beam covers: Formed aluminium panels wrap structural columns and beams in circular, elliptical, or rectangular profiles, concealing the structure with a durable, finished surface.
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Canopies and entrance features: Bent panels create the sweeping forms typical of entrance canopies, porte-cochères, and feature roofs, with the same weather performance as flat cladding.
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Barrel vaults and arched windows: Roll-formed panels follow the curve of vaulted roofs and arched openings, maintaining consistent joint widths and drainage paths.
Customisation & Supply Options
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Service
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Capability
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Radius & Angle Definition
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Single, multi-radius, and compound curves; sharp folds; custom angles
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Panel Dimensions
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Custom sizes to suit facade module and installation sequence
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Edge & Joint Design
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Interlocking edges, shadow gaps, or expressed joints
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Finish Options
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In-house powder coating, PVDF, anodizing; full RAL and custom colours
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Bespoke Die Design
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When standard sub-frame profiles do not match your geometry, our extrusion design service develops custom tooling and produces trial sections for approval
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Packaging & Delivery
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Protective interleaving, custom pallets, labelled per facade zone
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Why Choose Shengxin for Bent Curtain Wall Panels?
Forming aluminium is as much about controlling spring-back and maintaining a consistent radius as it is about the machine itself. Shengxin has over 30 years of aluminium manufacturing experience and performs all forming in-house — press brake and roll forming — alongside our extrusion, CNC machining, and coating lines. This means we can verify the formed panel against the drawing before finishing, adjust the tooling if the radius drifts, and deliver panels that match the architectural intent. For facade projects where the formed pattern extends across a prominent elevation, we can also coordinate the design as a continuous high-rise facade treatment, managing joint positions and radius transitions across the full surface. With $120 million in assets and exports to 97 countries, we have the capacity and experience to deliver formed panel projects of any scale.
In-House Forming Capability
CNC press brakes and roll-forming equipment handle folds, tight radii, and large curves, with radius verification before finishing.
Complete System Manufacturing
Panels, sub-frame profiles, and fixing brackets are all produced in-house, ensuring compatibility and single-source accountability.
Architectural Finish Quality
PVDF, powder coating, and anodizing lines with AAMA and Qualanod certification, plus custom colour matching to architect specifications.
Global Manufacturing Scale
100,000-ton annual capacity, 5,000-ton warehouse, 5 container loading platforms. We deliver formed panel projects worldwide.
Bent Aluminium Panel for Curtain Wall FAQ
Q: How do bent panels differ from standard aluminum wall panels?
A: Standard aluminum wall panels are flat sheets. Bent panels are formed to a curved or angled profile, allowing them to follow the geometry of a building rather than approximating it with flat segments. The forming process adds complexity and requires careful control of spring-back, but it delivers a continuous, seamless facade on curved or faceted elevations.
Q: Can bent panels create a large-format aluminum great wall panel effect?
A: Yes. We manufacture large formed panels up to 1500 mm × 4000 mm, and can coordinate radius transitions and joint positions to create a continuous aluminum great wall panel effect across a prominent elevation. The formed geometry ensures the surface reads as one sweeping form rather than a series of flat approximations.
Q: What is the maximum panel size you can form?
A: Our standard maximum is 1500 mm × 4000 mm. Larger formed panels may be possible depending on the radius and thickness; contact our engineering team to discuss your specific geometry.
Q: How tight can the bend radius be?
A: As a general rule, the minimum bend radius is twice the panel thickness for a press brake fold, and larger for roll-formed curves. For example, a 2 mm panel can be folded to a 4 mm radius. Tighter radii may be possible with annealed tempers or special tooling; our engineers will advise during design review.
Q: Can bent panels be supplied with the same finishes as flat panels?
A: Yes. Bent panels receive the same powder coating, PVDF, or anodizing finishes as our flat panels, applied in-house after forming. The coating is formulated to flex with the aluminium substrate, so it will not crack or peel at the bend.
Custom Bent Aluminium Panel Solutions
If your facade design requires a specific radius, a bespoke fold angle, or a formed panel that matches an irregular building geometry, Shengxin's custom fabrication service can manufacture panels to your exact drawings.
How It Works:
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Send your design — architectural drawings showing panel geometry, radius, and finish specification.
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Our engineers review — we assess formability, advise on thickness and radius, and suggest optimisations.
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Receive a quotation — including forming, panel fabrication, finish cost, and lead time.
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Approve a sample — we produce a sample panel with your radius and finish for approval.
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Full production — consistent radius and finish across every panel, delivered on schedule.
⚠️ Important Note: All panel images and dimensional drawings on this page are for reference only. Final dimensions, radii, finishes, and fixing details will be confirmed based on your approved production drawings and sample panels. Please contact our engineering team to discuss your specific requirements before placing an order.
Please note: The production timelines discussed are typical estimates based on smooth design approvals and current scheduling. Actual lead times may be longer if design changes are required, multiple sample iterations are needed, or production capacity is temporarily at high demand. Your dedicated project engineer will provide updated timelines at each stage, and final delivery dates will be confirmed in your order confirmation.
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