Door Hinge Stainless Steel 4 Inch Popular Flat Ball Bearing Fire Rated Exterior folding Butt Door Hinges
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- Supplier: Zhongshan Yuanhang Hardware Manufacturing Co. Ltd.
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Product Overview
Description
Company has international High standards production line.
OEM for international company
Allow various custom door hardware
International Certification
Implement your creative design
Provide customized services.
Provide customized services.
YONGHANG -The Good Business Partner You Looking For
Product Description
Name | 4X3 inch Round Door Hinge |
Material | Stainless Steel 201/304/316 |
MOQ | 100 PAIRS |
Thickness | 2.0mm/2.5mm/3.0mm |
Finish | Silver Color/Matte Black/ Bronze/Dark Bronze/Gold/ |
Connect | TEL:86-13823936085 E-mail: sales01@yonghang-hardware.com |
Capacity | 150lbs |
DETAIL
Thickness:
2.0mm/2.5mm/3.0mm
Great hardness
2 types of
normal holes shapes
Contact for special holes design
Contact for special holes design
Standard square corner
or 5/8 radius round corner
Customised 1/4 or others radius corner
Customised 1/4 or others radius corner
Our Advantages
Scientific production process
CAD design - Abrasive tool - Sample - finished product test -Punching-Machining - Polishing - Installation - Packaging.
Every production process is strictly based on drawing to produce and examine every process.Every production process with individual installation standard and quality supervisor.
More than 5 times examination
There are total 5 times of quality examination for production process, extra examination for finishes products and package. But we did not add those costs to customers, it ensures the quality of the products in a competitive price.
High standard stainless steel
Strictly follow the National industry standard, every batch material comes with examination reports to control the quality of the material.
Bulk Purchase material benefits
We get cheaper material price since we purchase more than one year usage to ensure the product price stable.
Auto-electroplate production line
A self-own electroplate production line, ensure the costs are low with high quality finish. Produce most of the accessories to reduce the costs even further.
Automatic production equipments
Factory apple many automatic machines, auto-punching, reduces labour costs to be more price competitive.
Heavier than Normal Iron Hinge
Our hinge weights 252.0g, durability and capacity
is better than the normal ones.
Applicable to Commercial & Household Hinge Project
Suitable for hotel, school, hospital, public facilities and office etc.
Company Introduction
Detailed Images
Installation Cautious
Contact customer service
For Free Engineer consultant, free door hinge design and free samples.
For Free Engineer consultant, free door hinge design and free samples.
4 Ball Bearings Design
With great quality lubricating
oil Ensure operates silently
You can choose to customize
2 or 4 ball bearings
Individual anti-water
and scratch PP material
bag for each hinge
2 PCS hinges/box
Including Stainless steel
screws in a seperate package
Color door hinge with screws of the same color, beautiful and practical
The quality of the spring is a key element of the hinge life cycle.
Our engineers have CAD & design Certificates and more than 15 years design experience.We also specialised in using dynamics and mechanical structural knowledge to design
the structure of the hinge which improves
the life cycle of the hinge.
In addition, we had patent in the hinge structure.
Specialised in hinge structure development.
Mature metal & spring heat processing, stable spring quality to avoid breakage, extend the life cycle of the hinge.
Ball Bearing design with 10 lubricate stainless steel balls, pin design with special damping oil lead to hinge operates smooth & silently.
Certificate
Door Hinge Patent Report
Door Hinge Weight Test Report
Salt Spray Test Pass Report
Description of Patent
Patent abstract of YONGHANG self-closing door hinge of our company
The utility model discloses an automatic door closinghinge. The shaft holes at the two ends of adjacent hingeplates are rotatably connected with each other through afixed shaft and a rotating shaft; the fixed shaft and therotating shaft are respectively T-shaped and cross-shaped; the large head post on the upper part of thefixed shaft and the large head post on the middle part ofthe rotating shaft are respectively connected withrespective hinge plate fixedly; a torsion spring isarranged in the shaft hole between the fixed shaft andthe rotating shaft; the two ends of the torsion spring arerespectively connected with the small head post on thelower part of the fixed shaft and the small head shaft onthe upper part of the rotating shaft; the small head poston the lower part of the rotating shaft is inserted into theshaft hole of the other hinge plate; a shell sleeve isarranged in the hinge plate corresponding to the smallhead post on the lower part of the rotating shaft; aplurality of resistance moving pieces and a plurality ofresistance fixed pieces which are distributed in astaggered way in pairs and in frictional contact with eachother are sleeved out of the small head post on the lowerpart of the rotating shaft; the resistance moving piecescan rotate along with the rotating shaft; and theresistance fixed pieces are limited and positioned by theshell sleeve. The automatic door closing hinge is low inproduction cost, long in service life, wide in application.and suitable to be installed and used on a left-openingdoor, a right-opening door and a free door.Packing&Shipping
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FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 20-35 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q:Could you customised for new product and package?
A:Yes we have professional engineer team to help design the new products and also able to provide custom packing according to your needs.
A:Yes we have professional engineer team to help design the new products and also able to provide custom packing according to your needs.
Q: What is your terms of payment ?
A: Payment<=1000 USD, 100% in advance. Payment>=1000 USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.
If you have another question, pls feel free to contact us.
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