EN1634 FR-132 fireproof polished brass PB effect heavy duty adjustable hidden door hinge SS304 conceal hinge

EN1634 FR-132 fireproof door hinges 3D adjusted door hidden hinges

1. Fire-Rated Certification & Safety

• Designed for Fireproof Doors: These hinges are specifically engineered and certified for fire doors (防火门), meaning they can withstand high temperatures and help maintain the integrity of fire barriers during an emergency.

2. High Load-Bearing Capacity

• Heavy-Duty Support: Built to comfortably handle demanding door weights of up to 100 kg (exceeding the 80 kg requirement), making them ideal for heavy, dense fire-rated door leafs.

3. Superior Material Properties (SUS304 Stainless Steel)

• High Durability & Strength: Crafted from premium SUS304 Stainless Steel, providing exceptional structural strength compared to standard zinc alloy options.

• Corrosion Resistance: SUS304 inherently resists rust, corrosion, and wear, ensuring long-term reliability in harsh environments or high-traffic commercial spaces.

4. Advanced 3D Adjustability

Post-installation alignment is seamless, allowing for ultra-precise door fitting via three-dimensional adjustment margins:

• Vertical (Up/Down):$\pm$ 2.0 mm

• Horizontal (Left/Right):$\pm$ 2.5 mm

• Depth (Before/After):$\pm$ 1.0 mm

5. Clean, Hidden Aesthetics & Full Clearance

• Concealed Design: When the door is closed, the hinges are completely invisible, preserving a sleek, minimalist architectural design.

• 180° Maximum Opening Angle: Allows the door leaf to open fully up to 180°, ensuring unhindered clearance for traffic and moving equipment.