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

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It is our responsibility to meet your needs and efficiently serve you. Your satisfaction is our best reward. We are looking forward to your visit for joint growth for Storm Door Hydraulic Closer, Double Door Closing Mechanism, Automatic Door Closer, For more information, please contact us as soon as possible!
China Floor Spring Door 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


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

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

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

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

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


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We know that we only thrive if we will guarantee our combined cost competiveness and high-quality advantageous at the same time for China Floor Spring Door Factories – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Florence, Israel, Monaco, We've got constructed strong and long co-operation relationship with an enormous quantity of companies within this business overseas. Immediate and specialist after-sale service supplied by our consultant group has happy our buyers. In depth Info and parameters from the merchandise will probably be sent to you for any thorough acknowledge. Free samples may be delivered and company check out to our corporation. n Portugal for negotiation is constantly welcome. Hope to get inquiries type you and construct a long-term co-operation partnership.
  • Product variety is complete, good quality and inexpensive, the delivery is fast and transport is security, very good, we are happy to cooperate with a reputable company!
    5 Stars By Rosalind from Tunisia - 2018.11.28 16:25
    We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 Stars By Sandy from America - 2017.07.28 15:46
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