Stainless Steel Hidden Hinges - Fully Concealed Invisible Door Hinges (DDCH007)
Product Overview
D&D HARDWARE’s Stainless Steel Hidden Hinges (Model: DDCH007) redefine modern door hardware with a fully concealed design that delivers both sleek aesthetics and robust performance. Engineered for timber and metal doors across residential, commercial, and institutional spaces, these concealed hinges eliminate visible fasteners to create a minimalist, seamless look—ideal for contemporary interiors. Combining high-grade stainless steel construction with a 180° maximum opening angle, they support door weights up to 120kgs while integrating effortlessly with D&D’s door locks, door closers, and door handles for complete, cohesive door systems. Perfect for spaces like hotels, schools, and luxury villas, they balance discreet design with industrial durability.
Stainless Steel Hidden Hinges - Technical Specifications
- Model Number: DDCH007
- Brand: D&D HARDWARE
- Material: Casting Stainless Steel Body + Stainless Steel Connecting Strips (SUS304; optional SUS316 for enhanced corrosion resistance)
- Size Variants (Hinge Width × Hinge Length, with Min. Door Thickness / Max. Door Weight): - 34×140mm: Min. 50mm / Max. 120kgs - 28×118mm: Min. 40mm / Max. 100kgs - 25×118mm: Min. 35mm / Max. 80kgs - 19×95mm: Min. 30mm / Max. 60kgs - 16×70mm: Min. 25mm / Max. 45kgs
- Max. Opening Angle: 180 Degrees
- Finish Options: SSS (Satin Stainless Steel), PSS (Polished Stainless Steel), PB (Polished Brass), PVD (Matte Black/Bronze), AB (Antique Brass), AC (Antique Copper)
- Design Style: Modern, Traditional, Contemporary, Industrial
- Warranty: 5 Years Mechanical Warranty (covers hinge movement and structural integrity)
- Installation: Concealed (totally invisible when door is closed)
- Handing: Non-handed (suitable for left/right swing doors)
Stainless Steel Hidden Hinges - Product Images and Videos
Stainless Steel Hidden Hinges - Product Features & Advantages
- Fully Concealed Installation: Seamless Aesthetics: The hinge is embedded within the door edge and frame, rendering it totally invisible when the door is closed. This eliminates visual clutter from traditional hinges, perfect for minimalist interiors, luxury hospitality spaces, and high-end retail environments—where design cohesion is paramount. Unlike semi-concealed hinges, it preserves the door’s clean lines without any protruding components.
- Casting Stainless Steel Construction: Industrial-Grade Durability: Crafted from SUS304 stainless steel (body and connecting strips), the hinge resists corrosion, warping, and wear—outperforming zinc-alloy or plated alternatives by 8x in lifespan. The material is ideal for humid environments (bathrooms, kitchens) and high-traffic areas (schools, malls), while optional SUS316 upgrades suit coastal or chemical-exposed spaces (laboratories, marine facilities).
- 180° Maximum Opening Angle: Unrestricted Access: The precision-engineered connecting strips enable doors to open fully to 180°, maximizing space utilization in compact areas (e.g., apartment kitchens, office meeting rooms) and facilitating easy movement of large items (hospital beds, retail displays). This functionality rivals traditional butt hinges while maintaining a concealed profile.
- Non-Handed Design: Universal Compatibility: Suitable for both left and right-swing doors, the non-handed design simplifies inventory management for contractors and eliminates installation errors. It adapts seamlessly to diverse door configurations in mixed-use buildings (hotels with guest rooms and conference halls) or residential complexes with varied unit layouts.
- Compatibility with Timber & Metal Doors: Engineered to support both timber (solid wood, MDF) and metal (hollow metal, steel) doors, the hinge’s multiple size variants ensure optimal load distribution: - 34×140mm for heavy solid wood entry doors (villa entrances, hotel lobbies) - 16×70mm for lightweight interior doors (bedrooms, bathrooms) This versatility reduces the need for specialized hinges, streamlining procurement for projects with mixed door types.
- Integrates with Comprehensive Door Systems: Works harmoniously with D&D’s door locks (including smart locks for keyless access), door closers (for controlled closure), and door handles (to match finish and style). The concealed design ensures these components remain the focal point of the door’s aesthetics without competing with visible hinge hardware.
Installation Steps for Stainless Steel Hidden Hinges (DDCH007)
- Pre-Installation Preparation: - Verify door material (timber/metal) and select the correct size variant (match min. door thickness and max. weight). - Gather tools: Drill (3mm stainless steel bit), torque wrench, chisel, mortise gauge, level, pencil, and D&D’s door handle (if coordinating finish). - Ensure the door and frame are properly aligned (use shims if needed to prevent binding).
- Mark Mortise Positions (Concealment-Critical): - Use the hinge’s template (included with packaging) to mark mortise outlines on the door edge and frame. - Set the mortise gauge to match the hinge’s thickness (ensure a flush fit for total invisibility).
- Create Mortises (Key for Concealed Fit): - Use a chisel and mallet to remove material within the marked outlines, working in 1mm increments to avoid over-cutting. - Check the hinge fit frequently: The hinge body should sit fully recessed, with connecting strips aligned for smooth movement. - Smooth mortise edges with sandpaper to prevent snagging on connecting strips.
- Secure Hinges & Test Movement: - Attach the door-mounted hinge body with provided stainless steel screws, tightening to 12–15 ft-lbs torque. - Repeat for the frame-mounted hinge body, ensuring alignment with the door-mounted component. - Test door movement: Open/close the door to 180° to verify smooth operation and concealed fit when closed.
- Finalize with Complementary Hardware: - Install D&D’s door handle and door lockset, ensuring finish coordination (e.g., PVD black hinge with matching door knob). - Add a magnetic door stop to prevent wall damage (for doors without door closers). - Verify the door closes fully and the hinge remains invisible—adjust mortises if minor alignment issues occur.
Stainless Steel Hidden Hinges - Application Scenarios
The DDCH007 Stainless Steel Hidden Hinge excels in environments demanding sleek design and reliable performance:
- Hospitality (Hotels, Resorts): - Use Case: Concealed hinges on guest room entry doors, suite bathrooms, and restaurant partitions. - Value: Seamless aesthetics enhance luxury branding; SUS304 steel withstands daily cleaning; 180° opening eases luggage movement.
- Education (Schools, Universities): - Use Case: Installed on classroom doors, lab entrances, and library study room doors. - Value: Non-handed design simplifies bulk installation; durable stainless steel resists student wear; concealed profile maintains a distraction-free learning environment.
- Residential (Villas, Apartments): - Use Case: Featured on entry doors, closet doors, and bathroom doors in modern homes. - Value: Minimalist look complements contemporary interiors; 180° opening maximizes small space utility; corrosion resistance suits humid bathrooms.
- Commercial (Offices, Retail): - Use Case: Integrated into office meeting room doors, retail fitting room doors, and mall storefronts. - Value: Discreet design highlights door handles and branding; robust construction supports high traffic; compatible with smart locks for access control.
- Healthcare (Hospitals, Clinics): - Use Case: Utilized on patient room doors, medical storage cabinets, and clinic examination room doors. - Value: Easy-to-clean stainless steel meets hygiene standards; concealed design prevents snagging on medical equipment or scrubs.
Value for Buyers: - Interior Designers: Achieves seamless, minimalist aesthetics that elevate space design; wide finish options match door hardware palettes. - Contractors: Simplifies installation with non-handed design and universal compatibility; reduces callbacks with 5-year warranty. - Property Developers: Enhances property value with premium concealed hardware; durable construction lowers maintenance costs over time. - Homeowners: Enjoys sleek, clutter-free doors that blend with decor; reliable performance ensures long-term functionality.
Certifications and Compliance
- ISO 9001 Quality Management: Manufactured under ISO 9001:2015-certified processes, with 100% dimensional and load testing for each batch.
- SGS Factory Audited: Produced in an SGS-verified facility (200,000 units/month capacity) with traceable material sourcing and ethical manufacturing—meeting global supply chain standards.
Stainless Steel Hidden Hinges - Customization Options
D&D offers tailored customization for DDCH007 to meet project-specific requirements:
- Material Upgrades: SUS316 stainless steel (for coastal or high-corrosion environments); anti-microbial coated stainless steel (for healthcare facilities). MOQ: 500 units.
- Finish Customization: Match RAL/Pantone colors for brand-specific projects (e.g., hotel chains); custom finishes like aged bronze or matte white to align with unique design schemes. MOQ: 300 units.
- Size & Load Customization: Bespoke dimensions for oversized doors (e.g., 40×150mm for 150kg doors) with engineering load calculations. MOQ: 500 units.
- Functional Enhancements: Integrated spring mechanisms for self-closing (ideal for panic exit devices in commercial spaces); tamper-resistant screws for high-security applications. MOQ: 1000 units.
- OEM/ODM Services: Private-label hinges with brand logos; custom installation templates (multilingual); serialized batches for traceability (required for large-scale projects). Offer hardware bundles (hinges + door handles + locks).
Stainless Steel Hidden Hinges - Production Process & Quality Control
D&D’s production process ensures precision and durability for hidden hinges:
- Stainless Steel Sourcing & Casting: Select SUS304/SUS316 ingots from SGS-verified mills; melt and cast into hinge bodies using precision investment casting (tolerance ±0.05mm).
- Connecting Strip Machining & Polishing: Stainless steel strips are laser-cut and CNC-machined to exact thickness (±0.02mm) for smooth movement. Strips undergo 320-grit polishing for corrosion resistance.
- Assembly & Calibration: Hinge bodies and connecting strips are assembled by robotic arms to ensure precise alignment. Each hinge is calibrated to achieve 180° opening without binding.
- Surface Finishing: - SSS/PSS: 3-stage abrasive polishing (120–320 grit for SSS; 400–1200 grit for PSS) followed by passivation. - PVD/AB/AC: Vacuum PVD coating (2–3μm thickness) or chemical patination for color stability and scratch resistance.
- Final Quality Testing (100% Batch Inspection): - Dimensional: Verify hinge width, length, and mortise fit. - Functional: Test 180° opening/closing and load-bearing (e.g., 120kg static load for 34×140mm variant). - Aesthetic: Inspect finish uniformity and concealed fit when door is closed.
- Packaging: Qualified hinges are packed in anti-scratch bags (inside labeled boxes) with installation templates, stainless steel screws, and compliance certificates. Bulk orders include moisture-absorbing desiccants for shipping.