Product Range Overview
GQIYIMETAL supplies a complete range of corner joints, corner brackets, and angle brackets for door and window hardware systems.Typical application:Aluminum window and door frames,Casement and sliding window systems,Curtain wall and partition frames,Furniture and light structural assemblies,Furniture and light structural assemblies.
Corner Joint Types & Applications
Our corner joint range covers different frame profiles and assembly methods, including standard corner brackets and reinforced angle brackets—all customizable for your system.
Standard Corner Joints
For aluminum window and door frame corners
Simple structure for efficient assembly
Suitable for common profile systems

Hidden / Internal Corner Connectors
Cleaner appearance for modern window systems
Suitable for concealed installation requirements
Designed for specific profile chambers

Reinforced Angle Brackets
Stronger support for higher load frames
Ideal for commercial windows and large frames
Improved corner rigidity and stability

Custom Corner Joints
Tailored to your profile drawings and assembly process
Compatible with your existing window fitting and hardware system
OEM support for distributors and brands

Series Summary – Corner Joints & Angle Brackets
All corner joint specifications can be customized to match your frame profile, assembly method, and market standards.
| Application | Product Type | Material Options | Profile / Frame Compatibility | Structure Options | Finish Options | Installation | Custom Options |
| Aluminum Windows | Corner Joint | Aluminum / Zinc Alloy / Steel | Standard window profiles | Standard / reinforced | Plated / coated | Screw / press-fit | Size, thickness |
| Casement Window | Corner Bracket | Zinc Alloy / Steel | Casement frames | L-shape / multi-hole | Anti-corrosion | Screw fixing | Hole pattern |
| Sliding Frames | Angle Bracket | Steel / Alloy | Sliding door & window frames | Heavy-duty | Coated | Screw fixing | Strength upgrade |
| Fabrication Use | Corner Connector | Optional | Custom profiles | Hidden / internal | Customized | Customized | OEM structure |
| Building Hardware | Corner Bracket | Optional | Multi-system frames | Standard / custom | Customized | Customized | Logo, packaging |

Customization for Your Market and System
GQIYIMETAL supports full customization for distributors and project buyers.
Material & Size
Aluminum / zinc alloy / steel options
Custom thickness, length, and hole spacing
Custom bracket shape based on drawings

System Matching
Support for different frame chambers and corner structures
Compatible with aluminum door and window profiles
Works with complete door hardware and window fitting systems

Surface Finish
Plated / coated options
Corrosion-resistant treatments for humid or coastal markets
Custom finish for branded product lines

Branding & Packaging
OEM labeling and barcode support
Private label packaging
Export-ready bulk packing

Quality & Testing
Each corner joint and angle bracket is produced under strict quality control. Inspection focus:
Fit testing with frame profiles
Surface finish and corrosion resistance checks
Final assembly inspection before shipment
Material verification and hardness checks
Dimension accuracy and tolerance control
These procedures ensure stable product performance for long-term cooperation.

How to Choose the Right Corner Joint
Key selection factors
- Profile type and corner chamber structure
- Required frame strength and load level
- Installation method (screw / press-fit / concealed)
- Indoor vs outdoor corrosion requirements++
Share your profile drawing or application scenario, and we will recommend the most suitable corner bracket / corner joint solution.


















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