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China Floor Spring Door Suppliers – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus

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"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our firm to the long-term to develop together with consumers for mutual reciprocity and mutual advantage for 90 Degree Hold Open Door Closer, Panic Bar Door, Commercial Door Closer Adjustment, We welcome buyers, business enterprise associations and good friends from all sections in the planet to get hold of us and request cooperation for mutual gains.
China Floor Spring Door Suppliers – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus Detail:

We are a professional Door spring manufacturer and supplier in China, specializing in providing high quality customized products. We warmly welcome you to wholesale bulk Door spring stock from our factory. Contact us for free samples.

Our value message is QUALITY and SERVICE
10 years of hardware manufacturing experience
Can customized any size and color
Compensation if late delivery or bad quality
Competitive prices
Experienced professionals
24 hours online after-sales service
OEM &ODM offered
We boast our own R & D, production, exports, and logistics team

Performance parameters of D-7300
Model D-7300
Applicable Standard
Engine Cylinder Single
Max Door Width 1200mm
Max Door Weight 150kg
Max Open Degree 135°
Stop-Device 90°
Latching Speed Adjustment 0°-20°
Closing Speed Adjustment 20°-90°
Application Temperature  -40° to 60°
Dimension:Length*Width*Height 273mm*126mm*70mm
Material of Cover Plate 304SS or 201SS
Thickness of Cover 1.2mm
Finish SSS/PSS/Matt Black
Service Life Over 500,000cycles
Warranty 3 years

A floor spring is typically concealed under the floor to operate a door which requires to be closed after use, for reasons including convenience, safety or security.

Floor springs operate using what we call a CAM action mechanism. When the door is opened, regardless of in which direction, the bottom arm, which is fixed to the door, rotates the CAM spindle. This, in turn, rotates the CAM itself. The CAM is connected to the piston and, when it’s rotated, pulls the piston head


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China Floor Spring Door Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Floor Spring Door Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Floor Spring Door Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Floor Spring Door Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Floor Spring Door Suppliers –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures


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With this motto in mind, we have turn out to be amongst probably the most technologically innovative, cost-efficient, and price-competitive manufacturers for China Floor Spring Door Suppliers – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Russia, Norway, Kuala Lumpur, With excellent products, high quality service and sincere attitude of service, we ensure customer satisfaction and help customers create value for mutual benefit and create a win-win situation. Welcome customers all over the world to contact us or visit our company. We will satisfy you with our professional service!
  • The factory has advanced equipment, experienced staffs and good management level, so product quality had assurance, this cooperation is very relaxed and happy!
    5 Stars By Ruth from Brisbane - 2017.12.02 14:11
    As a veteran of this industry, we can say that the company can be a leader in the industry, select them is right.
    5 Stars By Dolores from Vancouver - 2017.11.11 11:41
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