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

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Our purpose is to fulfill our clients by offering golden company, great price and premium quality for Soft Close Interior Door Hinges, Storefront Door Closer, Door Closer Name, All products are manufactured with advanced equipment and strict QC procedures in order to ensure high quality. Welcome customers new and old to contact us for business cooperation.
China 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:

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

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

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

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

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


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Our merchandise are commonly identified and dependable by end users and will meet continually altering financial and social desires for China Floor Spring Factories – D-7300 Single Engine Cylinder Floor Spring – Dorrenhaus , The product will supply to all over the world, such as: Cairo, Finland, Lisbon, With the highest standards of product quality and service, our products have been exported to more than 25 countries like the USA, CANADA, GERMANY, FRANCE, UAE, Malaysia and so on.We are very pleased to serve customers from all over the world!
  • Perfect services, quality products and competitive prices, we have work many times, every time is delighted, wish continue to maintain!
    5 Stars By Mavis from Swaziland - 2017.09.09 10:18
    The company's products can meet our diverse needs, and the price is cheap, the most important is that the quality is also very nice.
    5 Stars By Claire from Kyrgyzstan - 2017.12.19 11:10
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