Soft Close 180 Degree Door Closer , Safety Control Overhead Closer for Steel Door

Soft Close 180 Degree Door Closer , Safety Control Overhead Closer for Steel Door

• Even operation, oil tight, no abnormal sound
• ANSI 156.4 Grade 1, 2 millions plus life cycles
• Adjustable closing force, controllable, widly used

Ω American medium heavy duty closer for steel door overhead mounted
Ω Backcheck safety controlled by valve, adjustable after installation
Ω Casting aluminum closer housing with adjustable screw thread steel arm
Ω Adjustable latching & closing speed regulated by dual separate valves
Ω Adjusting spring strength size 1-6, max. opening angle: 180 degree
Ω No manual closing needed, suitable for all regular installation
Ω Obtain certification of UL 10C, fire rated testing up to 3 hours
Ω Structure: Rack and pinion type, dual heat treatment, needle bearing
Ω High quality closer lubricating oil for smooth operation and lubrication,
temperature range: - 40 ℃ to 45 ℃, suitable for very cold district.

► Trusted cooperative supplier of universal famous door closer enterprises


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

* SPRING FORWARD, EASY BACK: the commercial-grade arm won’t interfere with opening,
at the same time closing door gradually to allow elegant entrance and exit
* SOFT CLOSE, HANDS-FREE: let the door finish work, enjoy self-driven shutdown and lock,
maintain quiet and sureness.
* ADJUSTING ACCORDING TO YOUR REQUEST: let customer act at their own pace. Closing
power of 6 levels is available for most door weight or width.
* RELIABLE CERTIFIABLY : ANSI 156.4 - Grade 1 is the highest standard that can be achieved
by door closer. In fact the life cycle of this model is much more than 2 millions.
* FITS WHERE YOU NEED IT: surface mounted model and full sets of screw package, allows you
to install over different occasion, while providing complete control

           ------------ 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.