Products

carry on to further improve, to guarantee merchandise high-quality in line with market and buyer standard necessities. Our organization has a top quality assurance procedure have already been established for Factory Supply Factory Customized Two Section Speed Control Hydraulic Door Closer, We have been on the lookout ahead to setting up long-term small business associations with you. Your reviews and tips are hugely appreciated.
carry on to further improve, to guarantee merchandise high-quality in line with market and buyer standard necessities. Our organization has a top quality assurance procedure have already been established for China Hydraulic Door Closer and Door Closer, With more and more Chinese products and solutions around the world, our international business is developing rapidly and economic indicators big increase year by year. We now have enough confidence to supply you both better merchandise and service, because we have been more and more powerful, specialist and experience in domestic and international.

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.

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.

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.

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.

carry on to further improve, to guarantee merchandise high-quality in line with market and buyer standard necessities. Our organization has a top quality assurance procedure have already been established for Factory Supply Factory Customized Two Section Speed Control Hydraulic Door Closer, We have been on the lookout ahead to setting up long-term small business associations with you. Your reviews and tips are hugely appreciated.
Factory Supply China Hydraulic Door Closer and Door Closer, With more and more Chinese products and solutions around the world, our international business is developing rapidly and economic indicators big increase year by year. We now have enough confidence to supply you both better merchandise and service, because we have been more and more powerful, specialist and experience in domestic and international.