Steel Door Body Frame: High-strength cold-rolled steel plate forming the door shell — solid and pry-resistant, providing a reliable security skeleton for the overall structure
MDF Solid Board Core: Medium Density Fiberboard (MDF) as the door's core layer — uniform density and compact structure, recognized as a premium sound insulation material that effectively blocks sound wave transmission paths
Foam + Honeycomb Paper Multi-Layer Infilling: High-density foam layer absorbs mid-to-high frequency noise, honeycomb paper structure attenuates low-frequency vibration — multi-layer composite infilling achieving full-spectrum noise reduction
5-Hour Fire-Rated Structural Design: The multi-layer structure of steel + MDF + foam + honeycomb paper inherently delivers excellent thermal insulation and flame retardancy, passing 1.5-hour fire rating certification
Simple Modern Surface Finishing: Delivered as finished product — door face adopts clean, flat modern design language with uniform, refined coating and no excessive decorative lines — crisp and clean
Push and Pull Opening System: Flexible, convenient push-pull operation not occupying front-of-door space — particularly suited to apartments and hotels with narrower corridors

|
Parameter |
Details |
|
Brand |
DERCHI |
|
Model Number |
YHA-77 |
|
Material |
Steel + MDF Board |
|
Infilled Material |
Foam + Honeycomb Paper |
|
Special Door Type |
Security Door |
|
Design Style |
Luxury Modern / Simple Design |
|
Size |
2050/2150/2250mm × 960/1050/1160mm (Customized) |
|
Opening Direction |
Customized |
|
Opening Method |
Push and Pull |
|
Position |
Exterior |
|
Fire Rating |
1.5hr |
|
Feature |
Anti-Theft, Noise Reduction |
|
Surface Finishing |
Finished |
|
Accessories |
Lock + Handles + Hinge |
|
Certificate |
ISO9001, CE |
|
Warranty |
2 Years |
|
MOQ |
2 Sets |
|
Place of Origin |
Guandong China |
|
Project Solution Capability |
Total Solution for Projects |
- MDF solid board + foam + honeycomb paper triple sound insulation structure — effective full-spectrum noise blocking
- MDF board with uniform, compact density delivers extremely low sound wave penetration rate — insulation far exceeding hollow doors
- Multi-layer heterogeneous material composite avoids single-material resonance frequency defects — more comprehensive noise reduction
- Providing acoustic assurance for bedrooms, studies, hotel rooms, and other spaces demanding silence
- Passing professional fire rating test — effectively blocking fire spread for 1.5 hours
- Steel + MDF + foam multi-layer structure naturally delivering excellent thermal insulation and flame retardancy
- Meeting fire safety codes for hotels, office buildings, apartments, and other commercial buildings
- Providing precious evacuation and rescue time for occupants
- High-strength steel door body frame — pry-resistant and impact-resistant
- Professional security lock system preventing technical bypass
- Designed to Turkish security standards with internationally market-proven safety performance
- Steel + MDF dual-layer structure enhancing overall door rigidity — extremely difficult forced entry
- MDF solid board delivers substantial feel and quality — incomparable to hollow doors
- Simple modern design language with clean panels and no excessive decoration — complementing any space style
- Finished surface treatment ready for use from factory — uniform, lasting colour
- Push-and-pull opening design saving space with a thoroughly modern feel
- Own factory in Hubei with sufficient capacity and stable delivery
- MOQ 2 sets — zero-pressure sample and trial orders
- ISO9001 + CE dual certification — internationally recognized quality system
- Total project solution — one-stop service from design to delivery
Residential Apartments: Noise reduction preserving family tranquility — anti-theft and fire protection dual security assurance
Hotels / Guesthouses: Professional sound insulation ensuring guest sleep quality — 1.5-hour fire rating meeting fire codes
Office Buildings: Isolating corridor noise — creating quiet, efficient work environments
Bedrooms / Studies: MDF solid sound insulation structure — crafting private, serene personal spaces
Villa Entry: Simple modern appearance matching villa style — noise reduction enhancing living quality
Schools / Hospitals: Sound insulation meeting quiet requirements for educational and medical environments
Halls / Corridors: Push-pull design not occupying passage space — multiple sizes adapting to different widths
Overseas Engineering Projects: CE certification for global market access — total solutions serving overseas developers
DERCHI brand with own factory in Hubei — direct source supply
MDF solid board + foam + honeycomb paper triple noise reduction structure — industry-leading sound insulation
Dual endorsement: ISO9001 quality management system + CE European certification
1.5-hour fire rating certification meeting international fire safety standards
MOQ 2 sets — flexibly serving sample trials and large-volume engineering demands
Multiple standard sizes + full customization service adapting to global door opening standards
Total project solution provided — long-term export to Turkey, Middle East, Europe, Africa, Southeast Asia, and global markets
Installation Process: Confirm dimensions & configuration → Factory production (15-25 days) → Standard export packaging & shipping → On-site installation → Lock & push-pull system calibration → Sound insulation performance acceptance → Handover for use
Warranty: Overall 2-year warranty; Door structure 2-year warranty; Surface finish 2-year warranty; Lock accessories 1-year warranty
After-Sales Service: After-sales support provided; Online technical guidance; On-site technical support coordinated for bulk engineering orders
Maintenance Tips: Regularly wipe door surface with soft cloth; keep push-pull tracks clean and debris-free; lubricate locks annually; protect MDF board from water — avoid prolonged soaking
PACKING







