You want the best protection for your building. Top choices for 2026 include the D&D Hardware fire rated hydraulic door closer, trusted for both homes and businesses. Fire-rated doors with certified hardware help keep people safe and meet strict rules. Products that follow UL, CE, and ANSI standards

Fire door systems are one of the most critical passive fire protection measures in modern buildings. They are designed to contain fire, limit smoke spread, protect escape routes, and provide occupants with vital time to evacuate. However, the effectiveness of a fire door system depends not only on t

Fire Rated Door Hardware: CE vs UL CertificationIn fire-rated door assemblies, door hardware compliance is not optional—it is a legal, safety, and liability requirement. Using non-certified hardware on a fire-rated door can invalidate the entire fire rating, exposing projects to inspection failure,

When you pick fire rated door hardware for multi-family units, choose products that are certified. Look for safety features like self-closing and positive latching. These features help keep doors safe in emergencies. Pick strong materials that do not rust or wear out fast. Make sure the hardware fit

You want your school to be safe and follow rules. Certified fire rated door hardware helps keep students and staff safe. It slows down fire and smoke from spreading. These doors have special seals and materials. They block fire and smoke for a certain time. This gives people more time to leave the b

Introduction: Fire-Rated Hardware Is Applied Engineering, Not Just ComplianceIn a fire-rated door assembly, door hardware is part of the fire protection system, not a secondary accessory. Hinges, locks, closers, panic devices, and handles must perform under extreme heat, structural deformation, pres

Introduction: Cycle Testing Is a Measure of Real Service LifeIn professional door hardware specification, cycle testing is one of the most misunderstood performance indicators. While many products are labeled “heavy duty,” only standardized cycle testing can objectively demonstrate how long hardware

Introduction: Why Fire Test Standards Are Not InterchangeableFire-rated door assemblies are regulated by different fire test philosophies in Europe and North America. While both aim to protect life and property, EN 1634-1 and UL 10C are not equivalent standards and cannot be used interchangeably.For

Introduction: Why Certification Choice Matters in Door HardwareIn the global door hardware industry, certification is not optional — it is a regulatory and engineering requirement. However, many project teams still ask the same question:Do we need CE, UL, or ANSI/BHMA certification?The answer depends on market location, building codes, fire safety requirements, and project type. Each certification system serves a different purpose, and misunderstanding their roles can lead to project rejection, inspection failure, or legal risk.

Fire safety stands as a paramount concern in any type of building, be it residential, commercial, educational, or industrial. Among the array of fire protection systems, fire doors are of crucial importance, as they significantly slow down the dissemination of flames and smoke, safeguard escape rout

In architectural hardware procurement, door hinges are often considered a minor component. However, industry experts and professional buyers understand that hinges are one of the core components of a door, directly impacting its service life, safety performance, and overall quality. Especially for i

As a leading hardware manufacturer, we specialize in a comprehensive range of door hardware products, certified to meet global quality and safety standards. Our portfolio includes door hinges, door locks, smart locks, door closers, panic exit devices, concealed hinges, handles, lock cylinders, glass

As a door hardware company, D&D understands the importance of safety when it comes to protecting your property and loved ones. That is why we are proud to offer UL fire bars as a reliable solution for fire-rated doors. In this article, we will introduce you to UL certification, fire-rated doors, and

For further information about door hinge or any of our services, click here.Contact us Now:Contact: David JianMob: 0086-139 2903 7292Email: David@dndhardware.com, sales@dndhardware.comJobby ZhangMob: 0086-137 2599 9617Email: jobby@dndhardware.com