Door Restrainers

Door Closer / Door Closers
Door Closer / Door Closers
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Min Order Qty: 10 Piece/ Pieces pc
Supply Capability: 50000 Piece/ Pieces pc/month
Safety Door , Anti Theft Door Steel Door , Security Door
Safety Door , Anti Theft Door Steel Door , Security Door
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Min Order Qty: 30 pc
Supply Capability: 300 pc/month
melamine door, wood veneer door, mould door
melamine door, wood veneer door, mould door
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Min Order Qty: 1000 set
Supply Capability: 20000 set/month
Engineer Door
Engineer Door
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Min Order Qty: -
Supply Capability: 1200 pc/month
Armored Door
Armored Door
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Min Order Qty: -
Supply Capability: -
PVC door, melamine door, wood veneer door, mould door
Steel Security Door / Metal Door / Iron Door
Steel Security Door / Metal Door / Iron Door
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Min Order Qty: -
Supply Capability: -
door breaker
door breaker
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Min Order Qty: -
Supply Capability: -
Cheapest wooden door, mould door
Cheapest wooden door, mould door
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Min Order Qty: -
Supply Capability: -
Security Door Joining together door
Security Door Joining together door
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Min Order Qty: -
Supply Capability: -
SHOWER DOOR
SHOWER DOOR
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Min Order Qty: 300 set
Supply Capability: 5000 set/month
CY- door
CY- door
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Min Order Qty: -
Supply Capability: 3000 set/month
door hinge
door hinge
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Min Order Qty: -
Supply Capability: -
Security Door
Security Door
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Min Order Qty: 100 Pieces pc
Supply Capability: 2000 Pieces per Day pc/month
Metal Door/Steel Door /security door for home and building
Metal Door/Steel Door /security door for home and building
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Min Order Qty: 60 set
Supply Capability: 88888888 set/month
Security Door inside open door single leaf steel door design
Security Door inside open door single leaf steel door design
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Min Order Qty: 88 set
Supply Capability: 88888888 set/month
Door Lock for Frameless Glass Door BS36
Door Lock for Frameless Glass Door BS36
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Min Order Qty: -
Supply Capability: -
Glass Door Hinge JL04
Glass Door Hinge JL04
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Min Order Qty: -
Supply Capability: -
steel security door,Patented Security Door
steel security door,Patented Security Door
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Min Order Qty: 1000 set
Supply Capability: 20000 set/month
Aluminium frame automatic door
Aluminium frame automatic door
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Min Order Qty: -
Supply Capability: -
Office Furniture Commercial Cabinet with Glass Door
Office Furniture Commercial Cabinet with Glass Door
Ref Price: $160.00 - 175.00 / pc
Min Order Qty: 100 pc
Supply Capability: 5000 pc/month
Steel Security Door, Metal Door, Iron Entrance Door  design
Steel Security Door, Metal Door, Iron Entrance Door design
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Min Order Qty: 88 set
Supply Capability: 88888888 set/month
Metal Door Security Door for American Market
Metal Door Security Door for American Market
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Min Order Qty: 88 set
Supply Capability: 88888888 set/month
Door Lock and Door Handle
Door Lock and Door Handle
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Min Order Qty: 300 Pairs m.t.
Supply Capability: 30000 Pairs per Month m.t./month
Door Lock for Frameless Glass Door BS25
Door Lock for Frameless Glass Door BS25
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Min Order Qty: -
Supply Capability: -
Glass solid wooden  door
Glass solid wooden door
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Min Order Qty: 10 pc
Supply Capability: 5000 pc/month
Over Door Shoulder Pulley
Over Door Shoulder Pulley
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Min Order Qty: 5000PCS pc
Supply Capability: 100,000PCS/DAY pc/month
Chinese  automatic door manufacturer
Chinese automatic door manufacturer
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Min Order Qty: -
Supply Capability: -
automatic collapsible door CMAX
automatic collapsible door CMAX
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Min Order Qty: -
Supply Capability: -
Good Quality PVC Door Frame Door Accessories
Good Quality PVC Door Frame Door Accessories
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Min Order Qty: -
Supply Capability: -
LVL  Wood Plank  for Furniture  and  Door Frame Use
LVL Wood Plank for Furniture and Door Frame Use
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Min Order Qty: 50 m³
Supply Capability: 5000 m³/month
DOOR LOCK FOR ELENTRA
DOOR LOCK FOR ELENTRA
Ref Price: $18.00 / pc
Min Order Qty: 100 PCS pc
Supply Capability: 10000 PCS/MONTH pc/month
Security Steel Door, Steel Security Door, Wrought Iron Storm Door
Security Steel Door, Steel Security Door, Wrought Iron Storm Door
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Min Order Qty: 1000 pc
Supply Capability: 30000 pc/month
Door Handle For PVC Casement Door
Door Handle For PVC Casement Door
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Min Order Qty: -
Supply Capability: -
High Strength Plain Hollow Particle Board For Door Core
High Strength Plain Hollow Particle Board For Door Core
Ref Price: $180.00 - 300.00 / m³
Min Order Qty: 50 m³
Supply Capability: 5000 m³/month
Glass Door Hinge JL02
Glass Door Hinge JL02
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Min Order Qty: -
Supply Capability: -

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Hot Products

FAQ

Do not close the door closer?
There is a small mouth on the right side of the door closer, there are screws, that is, tight tone. There are two valves next to the door closer to the speed but can not adjust the weight. The choice of the door closers is too heavy.s
How does the door closer work?
The door closer is a similar spring-like hydraulic pressure, when the door is opened after the release by compression, the door automatically shut, like the role of the spring door, you can ensure that the door is opened, accurate and timely closure to the initial positions
What is the main function of the door closers of fire doors?
Fire door closers play the role is that when you open the fire door, the door closet will automatically start off the fire door, so that the fire door can be turned off. So that fire doors effectively play a role in blocking the fire and the spread of smoke.s
How to adjust the door closing force
Door closers to adjust the closing speed is through the two hydraulic valve independent control of two door closers closing speed for full hydraulic control.s
Why do you turn the door closer?
You first use a screwdriver to adjust the valve on the door above the valve to see if you can turns
How to choose the door closers
Select the door closers should consider the factors are: the weight of the door, the width of the door, the door frequency and the use of requirements and the use of the environment. The weight of the door and the width of the door is the most important factor in choosing the door closer model, common doors are fire doors, wooden doors, aluminum doors, glass doors, steel doors and so on. Usually the weight of the door is small, select the smaller model, and vice versa.s
How can we install a door closet
1, the standard installation: door closers installed on the door, the bearings installed in the door frame, and the door closet installed in the sliding door side. This installation is suitable for the door frame is narrow, there is not enough space to install the door closer. Applicable to the direction of the door without obstacles, the door open to a large enough angle, the door closers will not hit the foreign objects. 2, the door frame installation: door closet installed in the door frame, the seat installed in the door, and the door closet installed in the door side. This installation method is suitable for wide door frame, there is enough space to install the door closer. Compared with the standard installation, this installation method is suitable for opening doors such as walls and other obstacles. This type of installation has a greater closing force and is suitable for larger and heavier doors.s
How much is the cheapest door closer?
I have the cheapest B2 series behind closed doors, as long as 25 yuan as

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