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China Speedy Floor Spring Supplier – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus

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Innovation, excellent and reliability are the core values of our business. These principles today extra than ever form the basis of our success as an internationally active mid-size company for Swinging Door Hinges, Black Door Hinges, Heavy Duty Door Closer Types, Our aim is to help customers realize their goals. We are making great efforts to achieve this win-win situation and sincerely welcome you to join us.
China Speedy Floor Spring Supplier – 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


Product detail pictures:

China Speedy Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Speedy Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Speedy Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Speedy Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

China Speedy Floor Spring Supplier –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures


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While using the "Client-Oriented" organization philosophy, a rigorous top quality command process, highly developed production devices and a potent R&D workforce, we normally provide high quality products, outstanding solutions and aggressive charges for China Speedy Floor Spring Supplier – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Azerbaijan, Niger, Riyadh, The company attaches great importance to product quality and service quality, based on the business philosophy "good with people, genuine to whole world, your satisfaction is our pursuit". we design products, According to customer's sample and requirements, to meet the needs of the market and offer different customers with personalized service. Our company warmly welcomes friends at home and abroad to visit, to discuss cooperation and seek common development!
  • The customer service reprersentative explained very detailed, service attitude is very good, reply is very timely and comprehensive, a happy communication! We hope to have a opportunity to cooperate.
    5 Stars By Arlene from Porto - 2017.06.22 12:49
    Timely delivery, strict implementation of the contract provisions of the goods, encountered special circumstances, but also actively cooperate, a trustworthy company!
    5 Stars By Melissa from Surabaya - 2018.11.22 12:28
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