A Commercial Door Closer is an effective way to protect the entrance to your business. The mechanism works by regulating spring tension through hydraulic fluid, which passes from the reservoir to the door when it is opened. The speed of the spring can be adjusted by adjusting the valves on the door closer.

The different types of door closers vary in the speed at which they latch the door. This is important because the speed of the closing can affect the safety and security of a home. A manual or hydraulic door closer is an option. It is also a good idea to choose one with an adjustable latch speed to prevent the door from slamming after every opening.

Door hardware refers to hardware that is widely used in wooden doors, glass doors, metal doors, etc., including door closers, floor springs, door hinges, door bolts,door locks, door stops, etc. Among them, door control hardware is a daily metal product that is extremely important for people's daily

American National Standard Institute (ANSI) ANSI 156.4 ItemANSI 156.4 Cycle-testWithout Buffer FunctionGrade 1-2,000,000Grade 2-1,000,000Grade 3-500,000Buffer FunctionGrade 1-1,500,000Grade 2-750,000Grade 3-500,000Fire TestPass UL 10 C 3 hours fir

BS EN 1154:1997 -The European standard for the performance of controlled door closing devices. Introduce in detail the product type, usage classification, test period, test period, door quality, corrosion resistance, as well as product definition, product performance requirements, test instruments,