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D&D, Leader in Commercial Door Hardware
Pls inquire to  sales@danddhardware.com
/ / ：+86 139 2903 7292

PREMIUM CONCEALED

DOOR HINGE MANUFACTURER

D&D Hardware engineers UL 10C and EN1634 fire-rated concealed door hinges — 3D adjustable, 2D adjustable, hydraulic soft-close and standard invisible hinges — trusted by fire-rated metal door manufacturers, architects and distributors in 50+ countries.

UL Listed
Certification
EN1634 / UL10C
Fire Rated
Durability
200,000 Cycles
48 Hours
Antirust

What is A Concealed Door Hinge?

A concealed door hinge — also known as an invisible hinge or hidden door hinge — is a precision multi-link mechanism mortised into the door leaf and frame. When the door closes, the hinge vanishes completely, leaving an uninterrupted flush surface on both sides.
Beyond aesthetics, the engineering case is strong: no exposed knuckle or removable pin means superior tamper resistance; multi-axis adjustment delivers millimetre-precise door alignment after installation; and fire-engineered versions maintain structural integrity through UL 10C positive-pressure and EN1634 furnace testing — a mandatory requirement for stairwells, corridors and exit pathways in commercial buildings.
 
  Unlike traditional butt hinges, concealed hinges mount entirely inside the door and frame — invisible when closed, adjustable in up to three axes, and certifiable for 2+ hour fire door assemblies.  

   Fire-Rated Certified   

Certified Fire-Rated Adjustable Concealed Hinges

D&D fire-rated concealed hinges are independently tested and certified to both European (EN) and North American (UL) standards 
— ensuring compliance for commercial and institutional projects worldwide.
DDCH008

— Certified Concealed Hinge

Door Hinges

  Certification : UL 10C (R38013) · BS EN1935 · EN1634 · EN1670
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  Fire Rating: 132 min (EN1634) · UL 10C
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  Material: zinc alloy body, aluminium connecting strip, ss cover
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  Size: 150x25x21.5 / 177x28x24.5 / 246x34x26.5 mm
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  Load Capacity: 40 / 80 / 120 kg
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   Finishes: SN · MB · PVD · AB · AC · Custom
DDCH011

— Certified Concealed Hinge

Door Hinges

  Certification : UL 10C (R38013) · BS EN1634
────────────────────────────────────────────────────
  Fire Rating: 132 min (EN1634) · UL 10C
────────────────────────────────────────────────────
  Material: zinc alloy body, aluminium connecting strip, ss cover
────────────────────────────────────────────────────
  Size: 140x30x25 / 165x32x29 mm
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  Load Capacity: 60 /100 kg
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   Finishes: SN · MB · PVD · AB · AC · Custom

Not sure which concealed hinge type fits your project? 

Our engineers can help you choose the right solution.

   Product Range   

Concealed Door Hinge Types

From specification-grade fire-rated assemblies to soft-close residential invisible doors, match the mechanism to the mission 
— or ask our engineers to match it for you.

3D Adjustable Concealed Hinges

Our flagship fire-rated hinge with full 3D adjustability — vertical, horizontal, and depth — enabling perfect door alignment even after installation.

Picture
Model DDCH009 DDCH012 DDCH018 DDCH022 DDCH027(H)
Material zinc alloy zinc alloy, aluminum alloy stainless steel zinc alloy, aluminum alloy zinc alloy, aluminum
Size 30x110mm / 23x95mm 29x135x140mm 30x160mm / 32x240mm 26x150mm 30.5x140.5mm / 34.5x170.5mm / 36.5x220.5mm
2 Pcs Load Capacity / / 120kg / 200kg 55kg 60kg / 100kg / 150kg
3 Pcs Load Capacity / 60kg / 65kg 80kg / 120kg / 170kg
Opening Angle 180° 180° 180° 110° 180°

2D Adjustable Concealed Hinges

Balanced performance with vertical and horizontal adjustment for commercial door installations. Provides the precision needed for high-traffic environments while maintaining a sleek concealed profile.

Picture
Model DDCH017 DDCH019 DDCH020 DDCH021(1D) DDCH023 DDCH024 DDCH025(H) DDCH026(H)
Material zinc alloy, aluminum special steel special steel zinc alloy, aluminum alloy zinc alloy, aluminum zinc alloy, aluminum zinc alloy, aluminum zinc alloy, aluminum
Size 32x176mm / / 30X118mm 32x176mm 35x191mm 28x177.5mm 30x194.5mm
2 Pcs Load Capacity 80kg 150kg 200kg 60kg 80kg 120kg 50kg 60kg
Opening Angle 120° 160°-180° 160°-180° 110° 115° 115° 180° 180°
Application fire door / smoking door left / right hand well left / right hand well / wooden door / swing door invisible door / swing door solid wood door aluminium wood door

Hydraulic Concealed Hinges

A door closer and an invisible hinge in one body. The built-in hydraulic damper delivers controlled soft-closing with adjustable speed — no overhead closer, no exposed hardware, no slamming. Max. opening angle – 180° and adjustable stop position – free-stop function at 85°-125°.

Picture
Model DDCHSL01 DDCHSL02 DDCHSL03 DDCHSL04 DDCHSL05 DDCHSL06 DDCHSL06-3D DDCH613
Main Material zinc alloy zinc alloy zinc alloy zinc alloy zinc alloy zinc alloy zinc alloy zinc alloy
Adjustable Range 2D 2D 2D 2D 2D 2D 3D 3D
2 Pcs Load Capacity 60kg 60kg 60kg 80kg 60kg 80kg 80kg 60kg
3 Pcs Load Capacity 100kg 100kg 100kg 120kg 100kg 120kg 120kg /
Closing Torque 6N·m per hinge 6N·m per hinge 11N·m per hinge 6N·m per hinge 6N·m per hinge 11N·m per hinge 11N·m per hinge /

Standard Concealed Hinges

The foundational concealed hinge for interior doors, offering a clean invisible profile with smooth operation. Ideal for residential and light-commercial applications where aesthetics matter. Non-removable pins keep closed doors tamper-resistant across multiple finishes.

Picture
Model DDCH007 DDCH007-B DDCH010 DDCH013 DDCH014
Main Material stainlesss steel / zinc alloy zinc alloy stainlesss steel / zinc alloy stainlesss steel stainlesss steel
Size multiple multiple 28x118mm 127x35x3mm 149x32x4mm
Opening Angle 180° 180° 180° 130° 130°
Application timber door / metal door timber door / metal door wooden door / steel door large solid wood cabinet door cloaroom,storage room

Engineered for Every Project

Whether your project requires fire-rated certification, hydraulic soft-close, or cost-effective standard hinges 

— we have the right solution.

   Why D&D Hardware   

Famous-brand Quality, Factory-direct Economics

From certified fire-rated hinges to OEM custom solutions, we deliver the quality and reliability that professional builders and architects demand.

Dual-certified at the Source

One factory, both markets: UL 10C (File No. R38013) for North America and BS EN1935 / EN1634 / EN1670 for Europe and the Middle East — with test reports ready for your door certification dossier.

OEM / ODM Engineering

Custom load ratings, finishes (SN, MB, PVD, AB, AC), branding and packaging. We co-engineer hinge solutions with fire-rated metal door manufacturers to pass assembly-level testing.

Factory Direct Pricing

Source directly from our ISO-certified manufacturing facility in Jiangmen, China — eliminating middlemen and reducing costs by up to 30%.
 

Samples in 5–7 Days

Fast sampling, 30–35 day production lead time, and flexible T/T, L/C, D/P payment terms. Shipping from Jiangmen, Guangzhou or Shenzhen ports.
 
   Applications   

Where Our Hinges Go To Work?

Suitable for wooden doors, metal doors, aluminum doors and swing doors ranging from high-rise commercial buildings to luxury hotels.

01

Fire-rated Metal & Wooden Doors

Stairwells, corridors, exit pathways — UL 10C / EN1634 assemblies
02

Hotels & Hospitality

Silent hydraulic closing, flush guest-room and connecting doors
03

Commercial Complexes

High-traffic durability with 200,000-cycle certified endurance
04

Education & Institutions

Anti-tamper security, low maintenance, settlement compensation
05

Healthcare Facilities

Hygienic no-gap design, disinfectant-resistant finishes, tight sealing
06

High-end Residential

Invisible doors, secret rooms, seamless wall-flush joinery
   FAQ   

Concealed Door Hinge Questions, Answered

Answers to the most common questions about certifications, installation, ordering, and customization 
from architects and procurement teams worldwide.

Ready to Start Your Project?

Tell us your door types, certification target and quantities. We reply with datasheets, test reports and factory-direct pricing — samples ship in 5–7 days.

PHONE

+86-139 2903 7292

LOCATION

Jiangmen, Guangdong, China

Contanct Us

Get Famous Branded Quality at Factory Cost 12th Floor, Building 2, No.898, KeChuang Technical Zone,Jianghai Dist.Jiangmen City,Guangdong,China
   +86 139 2903 7292
   +86 139 2903 7292
  +86 139 2903 7292
 David Jian(Managing Director)
 Ms Judy(Financial / Account Dept. )

To get Famous Brand Quality at Low cost
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