With the development of metalworking technology, the use of door hardware is becoming more and more widespread. door hardware is an extremely important type of everyday metalwork in people's daily lives, and it is used in wooden doors, glass doors, sectional doors and other metal devices made by man

DATA SHEETSANSI/BHMA A156.1:2016AMERICAN NATIONAL STANDARD FORBUTTS AND HINGESThe Fire Protection Association (NFPA) Publication No. 80, standard for fire doors and windows, specifies the hardware requirements for fire-resistant openings with building hardware. All hardware to be installed on fire-p

BS EN 1935 classifies door furniture door furniture by using an 8 digit coding system. A similar classification applies to all building hardware product standards so that complementry items of hardware can be specified to, for instance, a common level of corrosion resistace, category, category of us