Surface Mounted Heavy Duty Hydraulic Door Closer With Hold Open Oil Tight D4016T

• Smooth operation, oil tight, no abnormal sound
• Closer body meet ANSI grade 1, 2mils life cycles
• Steel hold open rocker arm, stop at 90 degree

Whole process controlled beginning from open power to the final latching speed, Size
(spring force) Adjusting from #1 to # 6 by spring power adjustment shaft, door
open force will be regulated to min. size #1 so as to meet ADA requirements

• Product appearance: Larger dimension, soft with its body, temper force with grace
• Medium Heavy Duty Hydraulic Door Closer Opening and Closing Whole Controlled
• Accord with regulation of ANSI/BHMA A156.4 standard, factory tested life cycles
• of Closer body much more than ANSI Standard, Grade 1: 2,000,000
• Core Advantages: Amazon’s Market Leader Model, reach topmost standard Grade 1
• Non handed installation, for surface mounted: Regular Arm, Top Jamb, Parallel Arm
• Material: refined aluminum closer housing with steel hold open rocker arm
• Usage Occasion: suitable for medium and high traffic such as school, hotel, station
• Two control valves, one controls closing speed, another one controls latching speed
• Back-Check is controlled by a separate adjust valves, adjustable after installation
• Fuchs Brand Lubricants especially for high quality door closer constant lubrication
• Structure: rack and pinion type, needle bearing with two-time heat treatment
• 7 years cooperative vendors of world's famous door control companies

Painting - Silver, Gold, Brown, Bronze, White, Black

* SIZE ADJUSTABLE AS PER YOUR REQUIREMENT: final user will make their decision,
which level should be adapted for closing power: from level 1 to level 6.
* SPRING FORWARD, EASY CLOSING: commercial-level swing arm won’t interfere with
opening, meanwhile shut doors gradually to allow for graceful entry and exit
* SUIT YOUR NEEDS: The surface mount design and tri pack options, allow you to install
at any high-traffic area, supply full control at the same time.
* GENTLE, NO NEED TO CLOSE BY HAND: let the door close by itself, enjoy automatic
shutdown and lock, maintaining quiet and safety.

           ------------ 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.