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Double Lock Cylinder Types
Single Lock Cylinder Types
Half Lock Cylinder Types
High Security Lock Cylinder Types
ANSI Lock Cylinder Types

The EN1303-Certified High-Security Lock Cylinder – Engineered for Ultimate Protection

D&D HARDWARE proudly presents a next-generation Euro cylinder, rigorously tested to EN1303 standards (100,000+ cycles) and EN1634 fire-resistant for 183 minutes—ensuring unmatched durability and safety for commercial and high-security applications.
Key Benefits for B2B Buyers:
 EN1303 Certified – Withstands 100,000+ operational cycles, guaranteeing long-term reliability.
 183-Minute Fire Resistance (EN1634) – Protects against fire spread, ideal for fire-rated doors.
 Anti-Snap, Anti-Pick & Drill-Resistant – Defeats forced entry attempts.
 B2B Bulk Supply & Customization – Available in multiple lengths, finishes, and keying systems (including master keying).
 
Ideal for:
✔ Hotels & Offices – Secure, fire-compliant access control.
✔ Government & Healthcare – High-traffic, safety-critical environments.
✔ Residential Developers – Premium security for apartments and condos.
Key Management Function - Master Keys For European Cylinders
 
 
Cylinders to differ are all operated by individual keys which are all different to each other.
All cylinders are operated by the same key. This gives an arrangement where one key can open a group of locks.
Each individual key opens its own lock and the common entrance.
Construction key can operate the cylinder during construction period.

After construction is finished , Master Key can insert the cylinder and change the pin combination.The construction key can't open the same cylinder lock any more.
The simplest master key system has two levels of keying and is considered the lowest level of master keying. The least powerful keys at the bottom are called change keys. Each one operatesonly one lock, or one group of keyed alike locks.The most powerful key at the top is called the master key.

Even the largest, most complicated keying systems for hospitals and universities can be broken down into pieces as they use this simple model.
A 3-level system is nothing more than two or more 2-level systems tied
together under a higher level key called a grand master key.
A 4-level system ties two ormore 3-level systems together under a higher level key is called a great grand master key.

Even though large jobs tend torequire more levels of keying than small jobs, most systems do not need more than 4 levels of keying.

ln a 4-level master key system,it is especially important to consider the traffic flow throughout the building.

EN1303 Lock Cylinder Project

D&D fire rated door cylinder comply to ANSI,BHMA,UL and BS EN/CE, Suitable for Residential Building, Office Building,Education, Healthcare, Hotel, Government applications.We can supply international branded quality at factory cost with mechanical guarantee and after sales service.
Government
Education  
Office Building
Healthcare
Commercial
Hotel

Grow Your Business with Certified Hardware – D&D Hardware Exports

✔ Proven demand in America, Europe, Middle East & Asia
✔ Consultant-approved collections for maximum profitability
✔ Premium quality with Intertek/UL certifications
Join hundreds of satisfied partners who trust D&D Hardware for high-margin, fast-moving inventory. Let’s grow your business together!

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+86 139 2903 7292

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12th Floor , Building 2, No. 898, KeChuang Technical Zone, Jiangmen Avenue, Pengjiang District, Jiangmen City, Guangdong, China

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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 international branded quality at factory cost
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