EN1935 Zinc Alloy Silver Fire 3D Adjustable Concealed Door Hinge Types-DDCH008-G80

Product Features

1. Exceptional Durability

Certified to EN1935 standards through 200,000 cycle testing, equivalent to over 20 years of daily use while maintaining full functionality. The hinge body employs high-pressure die-cast ZAMAK-5 zinc alloy with a tensile strength of 380MPa, far exceeding standard load-bearing specifications for conventional hinges. The connecting plate utilises 6061-T6 aluminium alloy with a Teflon coating, achieving a friction coefficient below 0.15. This 3D adjustable concealed door hinge is particularly suited for high-traffic public spaces, offering a lifespan exceeding three times that of standard hinges.

2. Exceptional Fire Resistance

Certified to EN1634 with a 132-minute fire resistance rating, surpassing the 90-minute requirement for standard fire doors. Features triple fire protection: stainless steel cover plate withstands temperatures up to 1000°C; hinge arms incorporate expandable graphite seals that triple in volume at 200°C to block smoke and fire; all screws feature fire-retardant coating. This 3D adjustable concealed door hinge maintains structural integrity in high-temperature environments, providing critical evacuation assurance.

3. Precision Adjustment

Achieves three-dimensional precision adjustment: Vertical ±2mm adjustment corrects sagging door panels; Horizontal ±1.5mm adjustment eliminates uneven gaps; Depth ±1.2mm adjustment ensures flush door surfaces. All adjustments are completed using a dedicated hex key without disassembling the door. With 0.1mm adjustment precision, it far surpasses standard hinges' capabilities. This 3D adjustable concealed door hinge compensates for deformation caused by building settlement.

4. Superior Corrosion Resistance

Certified to EN1670 Class 5, exhibiting no corrosion signs after 48 hours of salt spray testing. The surface employs PVD silver plating with a 0.8μm coating thickness, combined with the zinc alloy substrate's inherent rust resistance, ensuring long-term performance in 85% humidity environments. The stainless steel cover plate undergoes passivation treatment, achieving acid and alkali resistance grade 9. This 3D adjustable concealed door hinge is particularly suitable for coastal regions and high-humidity environments.

Maintenance and Care

1. Regular Inspection Schedule

A comprehensive inspection is recommended every six months, focusing on verifying that all fastening screws meet the 1.5N·m torque standard. Use a torque wrench to tighten all visible screws. Check the clearance between the hinge arm and cup; the normal value should be less than 0.2mm.

2. Cleaning and Maintenance Methods

Wipe surfaces with a soft cloth dampened in neutral detergent. Acidic or alkaline cleaners are strictly prohibited. Monthly application of silicone-based lubricant to the adjustment slider ensures mechanism flexibility. Thoroughly dry surfaces post-cleaning to prevent water residue.

3. Adjustment Mechanism Maintenance

Quarterly inspect the three-dimensional adjustment mechanism for smooth operation. Should adjustment prove difficult, promptly remove accumulated dust from threaded areas. Clean using a specialised thread cleaner, then apply a small quantity of lithium-based grease. Maintaining clean adjustment screws is crucial for precision.

4. Fire Performance Maintenance

Annually inspect the integrity of fire-resistant seals. Replace immediately if aged or damaged. Ensure the fire-resistant sealant within the hinge cup groove shows no cracking to maintain continuous fire protection.

5. Usage Precautions

Avoid impacting the door leaf against obstacles to prevent damage to internal hinge bearings. Note that door leaf weight must not exceed the rated load capacity, as overloading may cause hinge deformation. Immediately cease operation upon detecting abnormal noises or impaired opening/closing functionality. Resume use only after troubleshooting and rectifying the fault.

D&D Hardware specialized in Stainless Steel hardware products for Wooden Doors& Metal Doors, such as Door Locks, Door Hinge, Lever Handles, Door Closer, Panic Exit Device, Door stopper, Flush Bolt, etc.

The Stainless Steel Euro Door Hinge that we offer are tested to the most stringent international industry standards, including BS EN, CE, UL, ANSI and BHMA, Suitable for Education, Healthcare, Hospitality, Residential and Commercial applications.

More door hardware items include:

1.Door Hinge- UL 10C R38013 & BHMA/ANSI Grade1/2 & CE EN1935 Grade 13

2.Concealed Hinge- BS EN1935, EN1634 Fire Rated

3.Door Lock - CE EN12209 UKCA Fire Rated & UL 10C R40901

4. Door Handle- BS EN 1906 Grade 4, EN1634 Fire Rated

5. Panic Exit Device- UL 10C R40486 & UL305 SA45817 & CE EN1125

6. Door Closer – CE BS EN 1154 & UL 10C R40717

7. Lock Cylinder-BS EN1303, EN1634 Fire Rated

8. Door Viewer - UL Listed UL 10C Fire Rated R41286

9. Glass Hardware / Bathroom Hardware / Barn Door Hardware