Self Closing Medium Duty Door Closer , Certifire Size Adjusting Door Closer D803

Self Closing Medium Duty Door Closer , Certifire Size Adjusting Door Closer D803

• No oil leakage, no abnormal noise, smooth running
• Two speed adjustment for closing and latching
• Pass 2 hours fire test, cost-effective

Adjusting door closer model D803 is of fixed spring strength size 3, while the
closing power can be adjusted by template and different towards of rocker arm
bracket. The main material is aluminum, light in weight while strong in structure.
Normally, aluminum will not react with air, that means the surface of aluminum
closer body will not change color for a long time.

1. Core Strength: Eurospec Top Selling Medium Duty Style, conform to CE Standard
2. Hydraulic structure, needle bearing, double-heat treated steel pinion
3. Non-handed installation,application for regular arm and top jamb mounting
4. Self closing and latching speed adjustable by dual separate adjusting valves
5. Material: Cast aluminums closer housing, reinforced type steel Dorma arm
6. Closer appearance: traditional sinicism design, steady and natural
7. Factory testing to meet CE EN1154, Grade 1, 500,000+ life cycles
8. Any climate hydraulic lubricating oil for high lubricity and constant lubrication
9. Size adjusting door closer with CE EN1634 certifire, 2 hours fire rating test
10. Advanced Technology: even operation, oil tight, without noise

► Trusted cooperative manufacturer of global first-rate door closer brands


Finishes - Aluminum, Gold, Bronze, Black, Brown, White

* GENTLE, NO NEED TO CLOSE BY HAND: let the door close by itself, enjoy self-driven
closing and latching, maintain quiet and security.
* SPRING THRUST, EASY CLOSING: the commercial-grade arm won’t interfere with
opening, meanwhile shut doors gradually to allow for graceful entry and exit
* CONSUMMATE CRAFTSMANSHIP: even running, no oil leakage and abnormal sound

           ------------ 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.