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Buy Glass Door Floor Spring Factories – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus

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"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our company for the long-term to develop together with customers for mutual reciprocity and mutual benefit for Automatic Exterior Door Opener, Commercial Door Hold Open, Panic Bar Door Hardware, Welcome any inquiry to our company. We will be glad to establish friendly business relationships with you!
Buy Glass Door Floor Spring Factories – 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:

Buy Glass Door Floor Spring Factories –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Glass Door Floor Spring Factories –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Glass Door Floor Spring Factories –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Glass Door Floor Spring Factories –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures

Buy Glass Door Floor Spring Factories –  D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus detail pictures


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Our goal is usually to deliver high quality items at aggressive price ranges, and top-notch service to shoppers around the entire world. We're ISO9001, CE, and GS certified and strictly adhere to their high quality specifications for Buy Glass Door Floor Spring Factories – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Detroit, Belarus, Portugal, Now, we professionally supplies customers with our main merchandise And our business is not only the "buy" and "sell", but also focus on more. We target to be your loyal supplier and long-term cooperator in China. Now, We hope to be the friends with you.
  • With a positive attitude of "regard the market, regard the custom, regard the science", the company works actively to do research and development. Hope we have a future business relationships and achieving mutual success.
    5 Stars By Carol from Salt Lake City - 2018.05.15 10:52
    Company director has very rich management experience and strict attitude, sales staff are warm and cheerful, technical staff are professional and responsible,so we have no worry about product,a nice manufacturer.
    5 Stars By Tyler Larson from Ghana - 2017.05.02 11:33
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