Products

“Control the quality by the details, show the strength by quality”. Our company has strived to establish a highly efficient and stable staff team and explored an effective quality control process for Factory Price For Model Professional Design 90 Degree Hold-Open Floor Spring Hinge Glass Door Closer, We never stop improving our technique and top quality to keep up with all the growth trend of this industry and meet your satisfaction effectively. Should you be interested within our solutions, please get in touch with us freely.
“Control the quality by the details, show the strength by quality”. Our company has strived to establish a highly efficient and stable staff team and explored an effective quality control process for China Door Closer and Automatic Door Closer, We are going to initiate the second phase of our development strategy. Our company regards “reasonable prices, efficient production time and good after-sales service” as our tenet. If you are interested in any of our solutions or would like to discuss a custom order, make sure you feel free to contact us. We have been looking forward to forming successful business relationships with new clients around the world in the near future.

They disable the self-closing function of a fire protection door in a controlled way. This means that they keep fire protection doors open, but automatically release them in the event of a fire so that door closers can do their job.

WE ARE DORRENHAUS
WE STARTED AS A FAMILY BUSINESS, OVER 140 YEARS AGO!
Dorrenhaus brand was originated in 1872 in Germany,with the development and progress, Dorrenhaus successor decide to invest door closer factory in China.In 2011,Zhejiang Dorrenhaus Hardware Industrial Co.,Ltd was formally established.

The D4016 Series features a single-piece cast aluminum body and a 1-3/8” heat-treated steel piston, a heat-treated pinion and staked valves. The D4016 Series standard door closer is certified ANSI/BHMA A156.4 Grade 1, is UL listed and is backed by a 10-year warranty.

*In case of unusually high or heavy doors, windy or draughty conditions, or special installations, a large power size of door closer should be used.

Door closers pull doors closed once they’ve been opened and released. They are used on fire doors to help prevent the spread of flames and smoke in the event of a fire. They are also used to keep out drafts and regulate room temperature in interior spaces.

Dorrenhaus comprises R&D center, testing laboratory,manufacturing center and sales dept, has over 10 in-service engineers and research specialists. Since it was founded, developing High performance door control products has always been the objective of Dorrenhaus. Dorrenhaus people have continuously tried to improve product quality, introducing oversea high and new technical equipment,giving our company good technical capabilities. Moreover, all of our R&D engineers has more than 20 years experience in door closer industry.

“Control the quality by the details, show the strength by quality”. Our company has strived to establish a highly efficient and stable staff team and explored an effective quality control process for Factory Price For Model Professional Design 90 Degree Hold-Open Floor Spring Hinge Glass Door Closer, We never stop improving our technique and top quality to keep up with all the growth trend of this industry and meet your satisfaction effectively. Should you be interested within our solutions, please get in touch with us freely.
Factory Price For China Door Closer and Automatic Door Closer, We are going to initiate the second phase of our development strategy. Our company regards “reasonable prices, efficient production time and good after-sales service” as our tenet. If you are interested in any of our solutions or would like to discuss a custom order, make sure you feel free to contact us. We have been looking forward to forming successful business relationships with new clients around the world in the near future.