Industrial Surface Mounted UL Door Closer D4016 High Lubricity Adjustable Speeds

• Size 1 - 6 adjustable, match different door weight and width
• Skilled Workmanship: even operation, oil tight, noiseless
• Tested and certified to meet ANSI Standard 156.4, Grade 1

Ω Industrial hydraulic door closer with standard adjustable back-check valve

Ω Universal application, surface mounted, design for all standard installations

Ω Closing and latching speeds adjustable by two separate regulating valves

Ω All weather hydraulic fluid for high lubricity and constant lubrication

Ω Full-complement needle bearing, double-heat treated steel pinion

Ω UL Listed, Conforms to Standards UL10C and UBC7-2-1997

Ω Hold open arm optional for regular & parallel installations

Ω Precise cast aluminum closer shell with reinforced adjustable arm

► Long-term cooperative partner of international well-known door hardware enterprises

Closer Color - Aluminum, Gold, Bronze, White, Brown, Black

* SUIT YOUR NEEDS: surface mounted design and full set of screw, allows you to install

in any high traffic area, supply full control at the same time.

* ADJUSTABLE TO YOUR NEEDS: let customer act at their own pace. Closing force of

size 1 to 6 is available for various door weight and width.

* TRUSTABLE CERTIFICATION: ANSI 156.4 - Grade 1 is the highest standard achievable

for door closers. This model is actually super passed 2 million+ cycles testing.

* SOFT, HANDS-FREE CLOSING: let the door finish work, enjoy self-acting closing and

locking, keep quiet and safety.

* SPRING FORWARD, EASY BACK: commercial-level swing arm will not impact opening,

while closing doors slowly enough to allow graceful entrance and exit

           ------------ 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.