Welcome to D&D HARDWARE INDUSTRIAL Co., Ltd . 
D&D, Leader in Commercial Door Hardware
Pls inquire to  sales@danddhardware.com
/ / :+86 139 2903 7292
Home » News
  • D&D Hardware tests every door hinge to ANSI/BHMA standards through a multi-stage quality control process — covering raw material inspection, dimensional verification, mechanical cycle testing, and fire-rating validation. This article explains exactly how that process works, and why it matters when s
  • Hotel door hardware must deliver three things simultaneously: near-silent operation that protects guest sleep, fire-rated safety that meets international building codes, and designer aesthetics that reinforce the property's brand identity. D&D Hardware is a certified BHMA door hardware manufacturer
  • BHMA-certified door hinges are the benchmark standard for educational buildings, combining high cycle-count durability, fire-rated performance, and code compliance. For schools and universities handling thousands of door operations daily, BHMA Grade 1 hinges—manufactured to ANSI/BHMA A156.1 s
  • The top trends for BHMA door hinges in 2026 and 2027 include the rapid adoption of corrosion-resistant PVD coatings, standardizing 3D concealed designs in commercial projects, integrating smart sensor modules, scaling up fire-rated hardware for ultra-large doors, and transitioning to eco-frie
  • ANSI/BHMA door hinge grades classify hinges by durability, load capacity, and cycle life. Grade 1 is engineered for heavy-duty commercial and institutional use, Grade 2 suits light commercial and high-traffic residential doors, and Grade 3 is designed for standard residential applicati
  • TL;DR: A BHMA door hinge is commercial-grade hardware certified by the Builders Hardware Manufacturers Association. These hinges pass strict ANSI performance tests for cycle life, structural strength, and corrosion resistance. Specifying BHMA-certified hardware ensures your doors comply with buildin
  • Quick answer: UL listed fire door hardware includes components like hinges, locks, closers, and panic bars that have passed rigorous safety evaluations, such as the UL 10C positive pressure test. These certified components ensure commercial doors meet NFPA 80 standards, effectively compartmentalizin
  • A door viewer, often referred to as a peephole, is a simple yet essential security device installed in an entry door. It allows a person inside a home or room to observe the outside area without opening the door, providing a critical layer of security, privacy, and convenience. Typically consisting of a wide-angle lens and a viewing piece, door viewers have evolved from basic optical models to advanced digital versions, becoming a standard feature in residential, hotel, and commercial security.

Contanct Us

Get Famous Branded Quality at Factory Cost 12th Floor, Building 2, No.898, KeChuang Technical Zone,Jianghai Dist.Jiangmen City,Guangdong,China
   +86 139 2903 7292
   +86 139 2903 7292
  +86 139 2903 7292
 David Jian(Managing Director)
 Ms Judy(Financial / Account Dept. )

To get Famous Brand Quality at Low cost

 Copyright ©2021  D&D HARDWARE INDUSTRIAL Co., Ltd . All Rights Reserved. |Sitemap