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[Do a better business with China ] Why D&D, a China Leading Door Hinge Supplier, Is Your Best Partner for Global Projects

In the complex landscape of international commercial construction and high-volume hardware procurement, securing durable and compliant components is paramount. Project managers and distributors often face a critical challenge: finding a manufacturing partner who can consistently deliver the required
[Industry information/ Trend ] Global Leading Door Hardware Manufacturer Showcases Innovations at The Big 5

Shaping the Future of Architecture Through Reliable HardwareThe evolution of modern architecture is inseparable from the reliability of the hardware that secures movement, safety, and design integrity in buildings. Global Leading Door Hardware Manufacturer D&D Hardware is presenting its expertise at
[Product Information ] Why Hidden Door Hinges Are Essential for Modern Doors and Architecture

In the realm of modern architecture and interior design, every detail matters in terms of overall aesthetics and functionality. Among them, hidden door hinges, as the core component of door control systems, are reshaping the visual presentation and user experience of modern spaces with their unique
[Guide to choosing door hardware ] The Complete Guide to Hidden Door Hinges: Types, Installation, and Benefits

IntroductionHidden door hinges, also referred to as concealed hinges, have emerged as a top choice in contemporary architecture and interior design. Unlike traditional exposed hinges, hidden hinges are installed within the door and its frame, remaining out of sight when the door is closed. This des
[Product Information ] What Is A Panic Bar? A Complete Guide with CE And UL Certified Solutions

What is a Panic Bar? A Complete Guide with CE and UL Certified SolutionsIntroductionIn any commercial or public building, ensuring safe and efficient emergency egress is of paramount importance. During fires, earthquakes, or other life-threatening situations, the speed and ease with which occupants
[Door Hardware Installation ] How To Install Hinges on A New Door?

How to Install Hinges on a New Door – Step-by-Step GuideIntroduction: The Importance of CE and UL Certified Door HingesWhen installing a new door, properly fitting the hinges is one of the most crucial steps. Hinges are not merely mechanical supports that enable doors to swing open and closed; they
[Door Hardware Installation ] How To Adjust a Door Closer: A Comprehensive Guide

How to Adjust a Door Closer: A Comprehensive GuideA door closer is an essential piece of hardware that ensures doors close safely, securely, and quietly. Over time, you might notice issues like a door slamming too fast, not latching properly, or being overly difficult to open. Fortunately, most mode
[Door Hardware Installation ] How To Remove Door Handle?

Removing a door lever handle is a basic DIY skill that comes in handy for replacement, repair, or painting tasks. Although the process is usually simple, lever handles can have various mounting mechanisms. This guide will take you through the steps for the most common types, helping you identify you
[Product Information ] How does a Euro mortise lock work?

The design of the mortise lock is very popular. It is a commonly used lock and is often used in commercial applications. They are sturdy and reliable, with diversified structures, and have withstood the test of time. In fact, these mortises can resist bad weather and use for decades in old houses an
[European Standard Door Hardware ] CE EN1634 Fire Rated Door Hardware

As a leading manufacturer and supplier of door hardware products, we specialise in high-performance CE-certified fire door hardware. Our range includes surface-mounted hinges, three-dimensional concealed adjustable hinges, mortise locks, door closers, lever handles, lock cylinders, and emergency exi
[Product Information ] Bored Locks Tubular Lockset

Bored locks are installed in a door with two round holes bored at right angles to one another. One hole is bored through the face of the door and is referred to as the cross bore/face bore; it holds the lock body.The other hole is bored into the edge of the lock stile of the door and is referred to
[Product Information ] What is the difference between interior and exterior door hinges?

A door, referring to a building entrance or exit, or an apparatus that can be opened and shut at the entrance and exit. It is a device that divides a limited space and connects or blocks the entrance and exit of two or more spaces. Doors can be classified into interior doors and exterior doors. Func
[American Standard Door Hardware ] ANSI/BHMA A156.1 Butt Hinge

American National Standard Institute (ANSI) ANSI 156.1 ItemANSI 156.1 Cycle-testGrade 1: 2,500,000Grade 2: 1,500,000Grade 3: 350,000Fire TestPass UL 10 C 3 hours fire testAnti-corrosionSalt Spray Test 200 hours This Standard establishes requirements for butts and hinges. Cycle tests, lateral and v
[American Standard Door Hardware ] UL Listed Fire Rated Door Hardware

UL is an independent product safety certification organization that develops standards to test fire door hardware to verify that it meets certain safety requirements during use, or in the event of a fire or other situation.D&D Door Hinge,Door Lock,Door Closer,Fire Exit Hardware tested to UL 10C, Fir
[Guide to choosing door hardware ] How do I choose the right lock cylinder?

European profile lock cylinders are the most popular type on the market. They usually have the same shape but differ in material, size, brand and especially in the type of key and locking mechanism. Lock cylinders offer security features such as anti-picking, anti-drilling, anti-shattering and anti-
[Product Information ] How do Mortise Locks Work?

The mortise lock is a very popular and ancient design that has stood the test of time. They are sturdy and reliable. Their structures are also relatively diverse. Modern mortise locks are a popular lock often used in the security industry of commercial locksmiths. Its rugged design has stood the tes
[Industry information/ Trend ] Top 10 Door Hardware Brands 2025

Top 10 Door Hardware Brands in the International Market (2025)The global door hardware market is a thriving arena, populated by a multitude of manufacturers that specialize in crafting high - quality locks, hinges, handles, and offering complete door - opening solutions. This in - depth guide delves