Product Overview
Achieve a sleek, frameless interior aesthetic with the Buzhoushan 3D Adjustable Concealed Hinge. Specially designed for high-end residential and commercial projects, this invisible hinge disappears completely within the door leaf and frame when closed, creating a flush and continuous surface.
Engineered with precision hardware technology, it supports effortless 3D alignment, smooth 180-degree swing angles, and whisper-quiet performance for daily use.
Key Features & Benefits
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Precision 3D Adjustment Technology
No need to remove the door panel for fine-tuning! Easily adjust the door position in three dimensions after installation:
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Up / Down Adjustment: $\pm 2.5\text{mm}$
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Left / Right Adjustment: $\pm 1.5\text{mm}$
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Forward / Back Adjustment: $\pm 1.0\text{mm}$
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180° Wide-Angle Opening & Silent Operation
Allows the door to open smoothly up to 180 degrees without binding. Integrated with wear-resistant copper spacers, it eliminates metal-on-metal friction to deliver a silent, smooth opening and closing experience.
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Four-Axis Heavy-Duty Structure
Built with a strong 4-axis support arm mechanism to evenly distribute weight, prevent door sagging over time, and handle door panel load capacities ranging from 12kg to 80kg (depending on specification and number of hinges used).
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Non-Handed & Universal Design
Reversible for both left-hand and right-hand opening doors with clear alignment markings for fast, error-free installation on job sites.
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Multiple Premium Finishes
Comes in a variety of modern surface finishes to match your door hardware and interior styling: Matte Black, Satin Nickel / Silver, Brushed Gold, and Dark Gunmetal Grey.
Technical Specifications
| Feature | Specification Details |
| Brand | Buzhoushan Door |
| Product Type | 3D Adjustable Concealed / Hidden Hinge |
| Opening Angle | 180° |
| Material | High-Strength Zinc Alloy Body + Steel Support Arms |
| Adjustment | 3D Adjustable (Vertical $\pm 2.5\text{mm}$, Horizontal $\pm 1.5\text{mm}$, Depth $\pm 1.0\text{mm}$) |
| Load Capacity | Multi-spec options (12kg / 40kg / 60kg / 80kg per set) |
| Application | WPC Doors, Flush Interior Doors, Wooden Doors, Aluminium Frame Doors |
| Available Finishes | Matte Black, Silver, Gold, Gunmetal Grey |
| Handing | Universal (Non-handed / Suitable for Left & Right doors) |
Why Choose Buzhoushan Concealed Hinges for WPC Doors?
Standard butt hinges interrupt the clean visual lines of modern architecture. Buzhoushan’s shallow recess concealed hinges fit perfectly into WPC (Wood Plastic Composite) door profiles, preventing damage to the composite core while ensuring a robust, maintenance-free hinge connection that lasts for decades.
