Chi Hardware Corporation Limited is willing to purchase high quality raw material rather than poor one in order to guarantee quality for black garage door spring. The coated surface has greatly improved its durability2.
Despite the richness of its functionalities, the product is very easy to use for people. They can easily understand how to operate once they have a look at the instructions. The polishing treatment has removed all of its surface imperfections3.
This product is energy efficient. It is subject to the energy conservation standards established by the Department of Energy. It can withstand water or moisture corrosion4.
This product is not easy to fade. Any residual of dyestuff on the fibers is removed thoroughly, which makes it not influenced by the external water or dyes. This product plays an important role in different positions of the garage door
High carbon steel : 77B / 82B
5 mm /5.5mm /5mm /6.5mm /7mm /7.5 mm
325mm - 3500 mm
Oiled Tempered / Black coated/Corrosion resistant
Rolling door / garage door / industrial /Furniture
The production technology of black garage door spring has been paid a lot of attention by Chi.2.
garage door fitting is our tenet to do the business for our costumers. Call!