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Products Category

Products

UL Door Hardware

CE Door Hardware

Fire Rated Door Hardware

Door Hinge

Fire Rated Door Hinge UL Listed

ANSI Fire Rated Door Hinge

BS EN 1935 Grade 13 CE Hinge

Heavy Duty Hinges

Electrified Door Hinge

Flag Hinge

Stainless Steel Hinges

Lift-Off Hinge

Spring Hinge

Flush Hinges

Security Hinge

Antirust Door Hinge

Folding Door Hinge

Commercial Hinges

Continuous Piano Hinge

Shower Door Hinge

Hinge Screw

Brass Hinge

Concealed Door Hinge

EN1935 Invisible Hinge

Concealed Hinge

Adjustable Concealed Hinge

Door Lock

Fire Door Lock

CE Mortise Lock

Euro Mortise Lock

Dead Bolt Lock

Door Lock for Front Door

Bathroom Door Lock

Door Lock for Sliding Door

Narrow Stile Lock

Commercial Door Lock

Door Lock for Classroom

Passage Door Lock

ANSI Mortise Lock

Tubular Lock

Cylindrical Lock

Door Lock Cylinder

Lock Cylinder EN1303

Lock Cylinder

Lock Cylinder ANSI

Panic Exit Hardware

UL Fire Exit Hardware

CE Panic Hardware

Commercial Door Push Bar

Panic Exit Device Lever Trim

Door Control

UL Door Closer

CE Door Closer

Door Closer

Concealed Door Closer

Heavy Duty Door Closer

Security Door Controls 

Door Selector

Door Coordinator

Pneumatic Door Closer

Door Handle

EN1906 Lever Handle

Tube Lever Handle-Hollow

Solid Door Handle

ANSI Door Handle

Door Handle on plate

Stainless Steel Lever

Antirust Door Handle

Lever Handle for Narrow Frame

Door knob

Lever on Backplate

Door Pull Handle

Glass door handle

Shower Door Handle

Escutcheon

Bathroom Hardware

Bathroom Mortise Lock

Bathroom Lock Cylinder

Toilet Indicator

Thumb turn with indicator

Bathroom Accessories

Door Bolt

Lever Action Flush Bolt

Wooden door bolt

Metal door flush bolts

Door Latch

Security Door Bolts

Stainless Steel Indicator Bolt

Dust Proof Socket

Flush Bolt for Metal Door

Flush Bolt for Wooden Door

Door Stopper

Door Holder

Floor Mounted Doorstop

Wall Mounted Door Stops

Magnetic Door Holders

Foot operated Door Holder

Bifold Door Catch Kit

Digital Door Lock

Padlock

Rim Lock

Door Accessories

Door Chain

Door Guard

Door Viewer

Sign Plate

Ball Catch

Push Pull Plate

Kick Plate

Metal Door Accessories

Intumescent Pads

Glass Hardware

Glass Door Hinge

Patch Fitting

Floor Spring

Glass Clip

Barn Door Hardware

Furniture Hardware

Furniture Handle

Cabinet Pulls

Cabinet knob

Towel Coat Hook

Hands Free Door Opener


 :  +86-750-3652251 / 3856396

:  +86-750-3856395 / 3856397

www.dndhardware.com

:  sales@dndhardware.com

 

Article

  • Due to tooling costs and similar considerations, variations of hinge sizes and fixing methods are not easily accommodated on a steel door. Steel door manufacturers generally provide their own steel hinges, which otherwise comply with these requirements, as part of the fire-resisting steel door-set and these are covered by evidence of performance.
  • To ensure the quality of fire doors, the selection of hardware accessories is also an important link. Since fire doors are special for fire protection, their accessories must of course also be special for fire protection, so the selection of fire door hardware accessories must be strict. Reasonable installation, proper management, and use in place are directly related to the fire protection effect of the fire door.
  • When used in a fire-resisting door assembly, the door leaf should be hung on single-axis hinges in accordance with local and national regulations. Hinges fitted to fire-resisting doors should be able to achieve the intended fire rating; also the hinge should be able to allow the door closing device, when fitted to a fire-resisting door assembly, to close the door leaf reliably from any angle to which it has been opened, overcoming the resistance of a latch or any seals when fitted.
  • Installation of fire rated hinge
  • Fire rated door refers to the door that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time. It is mainly used in the openings of firewalls, stairwell entrances, evacuation walkways, pipeline wellheads, etc. Fire rated doors are usually used for people. When a fire occurs, it can prevent the spread of fire and the diffusion of smoke within a certain period of time, ensure the safe evacuation of personnel, and play a role of sealing when the positive pressure air supply system is working. To ensure the quality of fire doors, the selection of hardware accessories is also an important link. Since fire doors are special for fire protection, of course, their accessories must also be special for fire protection, so the selection of fire door hardware accessories must be strict. Reasonable installation, proper management, and whether it is in place are directly related to the fire protection effect of the fire rated door.
  • Fire rated doors can meet fire resistance stability, integrity and insulation for a certain period of time. It is a fireproof partition with certain fire resistance, such as in fire compartments, evacuation stairwells, and vertical shafts.
    In addition to the function of ordinary doors, fire doors have the function of preventing the spread of fire and the spread of smoke, which can prevent the spread of fire for a certain period of time and ensure the evacuation of personnel.
  • Hinges, is an important part of the furniture, is related to function and service life of furniture. The specifications with function increasingly rich, the hinge is multifarious, but plus ca change or after installation to ensure that the products use safety and comfort. Let us know the butt door hinge installation method and points for attention.
  • Door hardware has a very important position in the modern complex function construction project.
    Standardized and professional hardware plays an important role in ensuring the operation, safe escape, security, environmental comfort and aesthetic of a building.
    8 considerations of configuration (Core application technology in the industry) as below
  • Fire Exit Hardware is an exit device which is tested for both panic and fire conditions and is required to be used on fire doors where panic hardware is required by code or desired for durability. Now D&D Hardware can provide fire exit hardware for you about Auditorium Exits. As an complete solutio
  • Fire Exit Hardware is an exit device which is tested for both panic and fire conditions and is required to be used on fire doors where panic hardware is required by code or desired for durability. Now D&D Hardware can provide fire exit hardware for you about Auditorium Exits. As an complete solutio

Contact Info

:+86-139 2903 7292   David Jian

:  +86-750- 3856396

 : sales@dndhardware.com
 
: +86-139 2903 7292
 
 : +86-139 2903 7292

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