D and D provides a wide range of products for wooden and metal door applications.
such as Stainless Steel Door Hinges, Door Locks, Lever Handles, Door Closers, Exit Devices, Door Stopers, Door Bolts and Door Accessories etc, not only door hardware but also Door Opening solution.
The D and D door set product category covers mortice locks, European profile cylinders, lever handles and hinges. Since the dimensions of all these products comply with DIN standards (DIN 18251 for mortice locks, DIN 18252 for profile cylinders and DIN 18255 for lever handles), the products are compatible amongst themselves regarding their functionality. All parts of the functional units are also perfectly aligned with each other.
As a professional knob for lock cylinder producer, we manufacture all kinds of cylinder knob. These knob for lock cylinder have the wide range of applicatioins, it can be used on oval cylinder,bathroom cylinder, thumbturn lock cylinder, Interior door cylinder and so on, so you can choose the suitble knob for lock cylinder.Custom Designs, Sizes, Finish and logos are welcome. The materials which make up for the cylinder knob are soild brass. We provide high quality products based on guaranteeing safety, maximize to beautify commercial building. You can accord to your door cylinder to choose a suitable thumb turn.