The U Profile Aluminium, also referred to as a U-channel or U-section, is a fundamental structural shape in the aluminium extrusion family. With a base and two parallel legs forming a U-shaped cross-section, this profile offers a recessed channel ideal for capturing panels, guiding sliding components, protecting edges, or serving as a lightweight structural member. Its open design allows easy insertion of glass, boards, or other materials, making it a favourite among fabricators, builders, and product designers worldwide.

Our U-profiles are extruded from 6063-T5 or 6061-T6 aluminium, selected based on the application's strength and surface finish requirements. 6063 is preferred for architectural and decorative uses due to its excellent extrudability and anodizing response, while 6061 provides higher mechanical strength for load-bearing and structural applications. Every U-channel is produced in-house on our 35 extrusion lines, ensuring tight dimensional control — consistent leg height, base width, wall thickness, and straightness across the entire production batch.
Shengxin stocks a wide range of standard U-profile sizes and can also custom-extrude non-standard dimensions to match your project's exact specifications. Surface finishes include mill, anodized (clear, black, bronze), and powder coated in any RAL colour. Common complementary aluminium extrusions such as angles, flat bars, and square tubes are available from our Standard Shape Profiles category, allowing single-source supply for your entire fabrication needs.
Features & Benefits
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Versatile U-shape design: The channel geometry is perfect for edge protection, sliding tracks, panel framing, and cable management — a single profile serves dozens of applications.
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Excellent corrosion resistance: Aluminium naturally resists rust and atmospheric corrosion. For harsh environments, anodized or powder coated finishes add further decades of protection.
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Lightweight and easy to work: Weighing roughly one-third of an equivalent steel channel, U-profiles are easier to handle, cut, drill, and install — reducing labour effort and structural dead load.
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Consistent dimensional accuracy: Extruded to EN 755 and EN 12020 standards, each U-profile maintains uniform leg height, base flatness, and wall thickness for reliable fit in assemblies.
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Available in multiple alloys: 6063-T5 for architectural and aesthetic applications; 6061-T6 where higher tensile and yield strength is required for structural frames and brackets.
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Ready-to-assemble options: We offer cut-to-length, drilling, tapping, and mitre cutting services so your U-profiles arrive ready for immediate integration into your project.
Standard U Profile Sizes (Commonly Produced)
These are representative standard sizes. Custom dimensions are produced to order with short lead times. Dimensions shown as Base Width x Leg Height x Thickness.
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Size (W x H x t)
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Base Width
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Leg Height
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Thickness
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Typical Alloy
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15 x 10 x 1.5 mm
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15 mm
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10 mm
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1.5 mm
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6063-T5
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20 x 10 x 2.0 mm
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20 mm
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10 mm
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2.0 mm
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6063-T5
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30 x 15 x 2.0 mm
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30 mm
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15 mm
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2.0 mm
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6063-T5 / 6061-T6
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40 x 20 x 3.0 mm
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40 mm
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20 mm
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3.0 mm
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6061-T6
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50 x 25 x 3.0 mm
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50 mm
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25 mm
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3.0 mm
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6061-T6
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Not seeing your required dimension? We custom-extrude U-profiles with base widths up to 550 mm and leg heights up to 300 mm. Contact us with your drawing.
Technical Specifications
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Profile Type
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U-Channel (U-Profile)
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Alloy Options
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6063-T5 (architectural), 6061-T6 (structural), 6005A
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Base Width Range
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10 mm – 550 mm
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Leg Height Range
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5 mm – 300 mm
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Wall Thickness
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1.0 mm – 15.0 mm (dependent on cross-section)
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Standard Length
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6.0 m (custom cut-to-length available)
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Surface Finish
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Mill finish, anodized (clear/black/bronze), powder coated (RAL)
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Compliance
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EN 755, EN 12020, JIS H4100, GB 5237
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Typical Applications of U Profile Aluminium
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Edge protection and trim: U-channels are widely used to cap and protect the edges of panels, boards, and glass sheets, providing a neat, finished appearance while preventing chipping.
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Sliding tracks and guides: The open channel acts as a smooth, low-friction track for sliding doors, drawer systems, window sashes, and linear motion guides in automation equipment.
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Cable management and conduit: U-profiles neatly route and protect wires, cables, and small pipes along walls, under desks, or inside electrical enclosures — open design allows easy access.
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Framing and support structures: Used as vertical studs, horizontal rails, and perimeter framing in partition walls, display booths, shelving, and lightweight modular structures.
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Architectural details and reveal trims: Anodized U-profiles create clean shadow gaps and reveals between cladding panels, ceiling tiles, and joinery elements — specified by architects for crisp lines.
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DIY and workshop fabrication: Hobbyists, model makers, and maintenance teams use standard U-channels for constructing jigs, enclosures, brackets, and repair splices — easy to cut and drill with common tools.
Value-Added Processing Options
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Service
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Capability
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Cut-to-Length
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Precision saw cutting to specified lengths; tight tolerances available
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Drilling & Tapping
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CNC drilled holes, slots, and threaded holes for mounting hardware
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Mitre Cutting
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45° and custom angle mitre cuts for clean frame corner joints
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Surface Finishing
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In-house anodizing (3 lines), powder coating (3 lines), PVDF
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Welding & Assembly
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Fabrication of welded U-channel frames and complete sub-assemblies
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Packaging
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Protective wrapping, custom pallets, labelled bundles for easy receiving
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Why Shengxin for U Profile Aluminium?
Producing consistent U-profiles — flat base, parallel legs, uniform wall thickness — requires precision die design and controlled extrusion conditions. With 29 years of experience, Shengxin combines advanced tooling, 35 extrusion lines (up to 5,500 tons), and a vertically integrated finishing department to deliver U-channels that meet exacting specifications.
Extensive Standard Range
Hundreds of U-profile dies already in our 500,000+ mould library. Chances are high that your required dimension is available without new tooling costs.
100,000-Ton Annual Capacity
From a few lengths for a prototype to multi-ton container loads for production, our scale ensures reliable supply and consistent quality batch after batch.
Complete In-House Finishing
3 anodizing lines, 3 powder coating lines, PVDF, and wood grain transfer — all within our factory. Your U-profiles arrive finished and ready for use.
Global Export Expertise
$120 million in assets. Shipped to 97 countries. 5,000-ton warehouse with 5 container loading platforms ensures timely dispatch with full export documentation.
Full Quality Assurance: Every order comes with mill certificates, dimensional inspection reports, and surface quality documentation. We support PPAP and project-specific quality requirements.
U Profile Aluminium FAQ
Q: What is the difference between a U-channel and a C-channel?
A: Typically, a U-channel has a flat base with two straight parallel legs, forming a rectangular interior. A C-channel may have tapered legs or return lips (small inward flanges at the leg tips). Our standard U-profiles have straight legs; custom lip profiles can be incorporated into the die design if required.
Q: What alloy should I use for a sliding door track — 6063 or 6061?
A: 6063-T5 is usually sufficient and provides a smoother surface for anodizing if aesthetics matter. If the track will carry heavy loads or experience frequent impact, specify 6061-T6 for its higher strength. Our technical team can help with the selection.
Q: Can U-profiles be bent into curves or arches?
A: Yes, U-channels can be stretch-formed or roll-bent into curved sections. Bending is typically performed on mill-finish profiles before surface treatment. We coordinate with bending specialists and can supply finished curved U-profiles with uniform anodizing or powder coating.
Q: Do you offer custom leg heights and wall thicknesses?
A: Absolutely. Any base width, leg height, and wall thickness combination within our extrusion envelope (max profile width 550 mm) can be custom-extruded. Provide your drawing, and we will manufacture a die and deliver sample sections for approval.
Q: What is the minimum order quantity for standard U-profiles?
A: For stock standard sizes, we can supply small quantities — even a single 6-meter bar. Custom dies typically require a minimum run of 300–500 kg. Contact our sales team with your requirements for a precise quotation.
Custom Aluminium U Profile Solutions
Every project has unique requirements. Whether you need a non-standard base width, taller legs, thicker walls, or a completely bespoke U-channel profile, Shengxin's custom extrusion service delivers precision aluminium profiles engineered to your exact drawings and specifications.
How It Works:
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Send your drawing — 2D PDF/DWG or 3D STEP/IGES file.
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Our engineers review — we assess feasibility and suggest optimisations.
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Receive a quotation — including die cost, unit price, and lead time.
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Approve a sample — we extrude a trial section for your sign-off.
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Full production — consistent quality, delivered on schedule.
⚠️ Important Note: All product images and dimensional drawings on this page are for reference only. Each custom profile is unique — final dimensions, tolerances, and surface finish will be confirmed based on your approved production drawing. Please contact our engineering team to discuss your specific requirements before placing an order.
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| See also: Aluminium Angle Profiles, Aluminium Square Tube