Product Description
What Is a 90° Angle Bracket?
A 90° angle bracket — also called a corner brace, L-bracket, or right-angle connector — is the most fundamental reinforcing and fixing component in curtain wall and steel construction. It joins two perpendicular members, typically transferring load from horizontal transoms to vertical mullions, connecting facade brackets to embed plates, or bracing the corners of structural frames.
As the backbone of thousands of connection details, the 90° bracket must deliver absolute dimensional accuracy and dependable load-bearing performance. Fabao Machinery produces standard and custom 90° angle brackets in carbon steel, stainless steel, and aluminum, covering everything from light-duty interior framing to heavy structural steel connections on high-rise facades.
Material Selection Guide
| Material | Grade | Typical Application | Surface Treatment | Weldable? |
|---|---|---|---|---|
| Carbon Steel | Q235B | Primary structural connections, embed plate welding, steel canopy corners | Hot-dip galvanized (≥50μm), electro-galvanized, powder coated | Yes |
| Stainless Steel | SS304 / SS316 | Exposed architectural fittings, coastal projects, hygienic environments | Pickled & passivated; optional powder coat | Yes |
| Aluminum Alloy | 6063-T5 / 6061-T6 | Aluminum curtain wall transom-to-mullion joints, non-welded framing, cladding supports | Anodized (silver, black, bronze), powder coated | No (bolt-on only) |
Typical Applications
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Curtain Wall Transom-Mullion Connections – Fixing horizontal transoms to vertical mullions at 90° in unitized and stick-built systems.
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Embed Plate to Bracket Mounting – Connecting facade support brackets to cast-in embed plates on concrete floor slabs.
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Steel Frame Corner Reinforcements – Stiffening right-angle joints in portal frames, equipment platforms, and canopies.
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Window & Door Subframes – Securing aluminum or steel frames within curtain wall openings.
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Cladding and Stone Hanging Systems – 90° support brackets for stone panels, terracotta, and fiber cement cladding.
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Machine Base & Equipment Mounts – Heavy-duty corner plates for industrial steel platforms and machinery foundations.
Detailed Dimension Table (Steel & Stainless Steel)
| Model | Leg Length (mm) | Thickness (mm) | Holes | Material | Surface |
|---|---|---|---|---|---|
| AB-90-50-Q | 50 × 50 | 3 / 4 / 5 | 4 | Q235B | HDG / Electro |
| AB-90-80-Q | 80 × 80 | 5 / 6 / 8 | 6 | Q235B | HDG / Powder |
| AB-90-120-Q | 120 × 120 | 6 / 8 / 10 | 8 | Q235B | Custom |
| AB-90-150-S | 150 × 150 | 5 / 6 / 8 | 8 | SS304 | Passivated |
| AB-90-200-S | 200 × 200 | 8 / 10 / 12 | 10 | SS316 | Passivated |
Aluminum 90° Bracket Common Sizes
| Model | Leg Length (mm) | Thickness (mm) | Holes | Alloy | Surface |
|---|---|---|---|---|---|
| AL-90-50 | 50 × 50 | 3 / 4 | 4 | 6063-T5 | Anodized silver |
| AL-90-80 | 80 × 80 | 4 / 5 | 6 | 6063-T5 | Anodized black/bronze |
| AL-90-120 | 120 × 120 | 5 / 6 | 8 | 6061-T6 | Powder coated |
| AL-90-200 | 200 × 200 | 6 / 8 | 12 | 6061-T6 | Powder coated |
All dimensions, hole configurations, and surface finishes can be customized to your project specifications. Non-standard leg lengths and thickness combinations are available on request.
Why Choose Fabao for 90° Angle Brackets?
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Mass Production Ready – With 40,000 tons annual capacity and 70+ machines, we handle both large-volume standard orders and custom batches without delays.
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Precision Manufacturing – Laser-cut plates, CNC-punched holes, and CO₂-welded assemblies ensure consistent accuracy within ±0.5mm.
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Integrated Surface Treatment – Two in-house galvanizing plants apply corrosion protection under strict quality control, eliminating outsourced finishing delays.
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Engineering Review – Our 50+ technical engineers review your drawings to confirm feasibility and suggest cost-effective optimizations before production.
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Global Export Packaging – Reinforced bundling and palletizing for ocean freight, ensuring parts arrive undamaged at your jobsite.
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