Medium Duty Auto Door Closer Surface Mounted No Oil Leakage CCC Certified

Medium Duty Auto Door Closer Surface Mounted No Oil Leakage CCC Certified

• Dorrenhaus - CE / UL certified | Export since 2011
• Even running, no oil leakage and abnormal sound
• Compulsory product certificate for fire door closer

D703 is our most durable medium duty automatic fire door closer, designed for the

application of low-traffic applications. It’s produced conform to UL 228 standard.

* Hydraulic Auto Door Closers. D703 Size 3, D706 Size 6 (strongest size)

* Auto Closing & latching speed controlled by dual separate adjusting valves

* Universal application, non-handed, designed for surface mounted

* Precised cast aluminum body with reinforced type adjustable tube arm

* Fuchs brand Hydraulic fluid for smooth lubricity and continuing lubrication

* Streamlined design allows mounting on most commercial applications

* Optional back check function adjusted by single regulating valve

* UL 10C online directory certification, up to 3 hours fire rating

* UL 228 certified, factory tested life cycles of 200,000+

► Reliable cooperative supplier of global famous door closer trade mark

Finishes: Silver, Bronze, White, Gold, Black, Brown

* GENTLE, NO MANUAL CLOSING: the door will closer by itself, enjoy self-driven

shutdown and lock, maintain quiet and sureness.

* SPRING THRUST, EASY BACK: the commercial-grade arm will not impact opening,

meanwhile shut doors gradually to allow for graceful entry and exit

* CERTIFICATION TRUSTABLE:UL 228 is the primary standard which mush be obtained

for door closers. In fact the model has surpassed a test to 300,000 + cycles.

           ------------ Our Advantages ------------

                     1.   Only produce door closer, annual output 1.5-2.0mils pcs.

                     2.   UL & CE certification, max. Life cycle test of 5 mil. Cycles.

                     3.   Pass European & China ISO9001:2015 QMS Certification.

                     4.   Mainly for export market since foundation in October, 2011.

                     5.   Long term cooperative supplier of world’s top security brands.

A High-end Germany Gating Hardware Brand

Originally founded in 1872, Dorrenhaus is a high-end Germany gating hardware brand. At the beginning of 1980's,

Dorrenhaus entered into Chinese market, and supplied numerous households in China with high quality hardware products.

On October 10, 2011, Dorrenhaus's door closer manufacturing base in China - Zhejiang Dorrenhaus Hardware Industry Co.

Ltd was formally founded. All members of management team have more than 15 years of experience in door closer industry.

Marketing Under Dorrenhaus and DORHAUS Brand

In 2017, our new trademark - DORHAUS was registered. We have $3 million registered capital. Our main products include

hydraulic door closers, automatic door closers, concealed door closers, commercial door closers, fire door closers, auto door

closers, sliding door closers, heavy duty door closers, overhead door closers, UL-listed door closers and door closer parts.

We have 205 total number of employees, which includes seven R&D staff and 13 quality control staff in our

15,000-square-meter factory.

Exporting Products Worldwide

Now, we have six complete production lines with annual output of 1.5 to 2.0 million sets. We export our products to more than

20 countries in North America, Europe, Russia, the Middle East and Southeast Asia. We passed the certification for EN ISO

9001:2008 quality management system in 2014, and ISO9001:2015 in 2017 respectively.

Our products passed many international and domestic certification and standard, such as:

American National Standard: ANSI 156.4 Grade 1, life cycle test of 2mil cycles

American UL228 and UL 10C for 3 hours fire testing

European Standard CE: EN1154, life cycle test of 500,000 cycles

European Standard CE: EN1634 fire testing

China National Standard: QB/T 2698-2005 Grade 1, life cycle test of 1 mil. cycles

China Compulsory Product Certification for fire rated door closer

Cooperate with Us Today

For more detailed information regarding our business, contact us today.