Beyond individual components, we deliver complete door opening systems tailored to meet the demands of residential, commercial, and institutional projects. Whether you need fire-rated hardware for safety compliance, sleek designs for modern aesthetics, or heavy-duty mechanisms for high-traffic areas, our products are manufactured to meet international standards (BS EN, CE, UL, ANSI, BHMA). With a focus on innovation, quality, and customization, we serve architects, contractors, and distributors worldwide, ensuring every solution enhances performance, security, and user experience. Partner with us for end-to-end door hardware expertise—from product selection to technical support.
D and D HARDWARE have a variety of crank hinges with different adjustable angles,such as 270 degree crank hinge,180 degree crank hinge or 90 degree crank hinge.The material of the crank hinge is 201, 304, 316 stainless steel. it can be used on timber door,metal door,interior door,exterior door and so on.You can accord to your door to choose a suitable crank hinge. If you have any questions,please contact us.