Security Door Wholesaler in China | Steel Security Door Specs & Pricing

ROGENILAN manufactures aluminum security doors with steel-reinforced cores for residential and commercial projects worldwide. This article documents material grades, lock systems, pricing, certification data, and installation parameters for procurement teams evaluating exterior security door options from China.

Steel Security Door: Material Specifications and Core Construction

Aluminum Alloy Grades and Wall Thickness

The door frame and leaf use 6063-T5 and 6063-T6 aluminum alloy profiles. 6063-T5 provides a yield strength of ≥145 MPa and tensile strength of ≥190 MPa, suitable for standard residential doors. 6063-T6 raises yield strength to ≥180 MPa for high-wind-load or forced-entry-rated applications.

The steel security door configuration inserts a 1.5–2.0 mm galvanized steel plate (SPCC, Z275 coating) into the lock-side of the aluminum leaf. This steel insert extends 400 mm above and below the lock cylinder, increasing resistance to drilling and prying attacks by a factor of 3 compared to aluminum-only construction.

Steel-Reinforced Core Configurations

Three core configurations are available, each targeting a different security tier:

Honeycomb cores keep door weight at 45–55 kg for a 900×2100 mm single leaf. Mineral wool cores raise weight to 65–75 kg but achieve Class C sound insulation per GB/T 8485. Polyurethane foam provides the lowest thermal conductivity at 0.022 W/m·K, reducing U-value to 1.8 W/m²·K for the complete door assembly.

Security Door for Home: Residential Sizing and Lock Systems

Standard Door Sizes and Custom Dimensions

For a security door for home applications, standard production covers the following dimensions:

Custom dimensions are accepted within 700–1400 mm width and 1900–2700 mm height per leaf. Tolerance is ±1.5 mm on width and ±2.0 mm on height per GB/T 8478 standard.

Multi-Point Lock Mechanisms

The standard lock system is a 5-point multi-point lock with the following engagement points:

• Main lock: Euro profile cylinder, 70 mm backset, CEN Grade 6 (equivalent to DIN 18252 Class 3)
• Upper hook bolt: 45° hook, engages at 1800 mm from threshold
• Lower hook bolt: 45° hook, engages at 300 mm from threshold
• Roller cams (×2): Located at 600 mm and 1500 mm, provide compression sealing
• Deadbolt: 25 mm throw, 18 mm diameter solid steel bolt

The lock cylinder uses a dimple key with 260,000 possible combinations. Anti-drill protection includes 6 hardened steel pins (HRC 60+) embedded in the cylinder body. Cycle test rating: 50,000 open/close cycles per EN 14846.

Security Doors for House: Pricing Table and Procurement Data

Price Ranges by Configuration

The following table lists security doors for house projects, quoted FOB Foshan in USD:

Bulk order discounts: 10+ units → 5% off; 30+ units → 8% off; 50+ units → 12% off. These prices include powder coating, hardware, and packaging but exclude shipping and import duties.

MOQ, Lead Time, and Payment Terms

Each door is individually packed in a 5-layer corrugated carton with 20 mm EPS foam corner protectors and a pine wood frame. Export pallet packing (1200×1000 mm) accommodates 6 single-leaf doors per pallet, with a total pallet weight of 380–450 kg.

Security Doors for Houses Exterior: Installation and Weatherproofing

Installation Steps and Frame Setting

Proper installation of security doors for houses exterior requires the following sequence:

1. Wall opening preparation: Verify opening is 20 mm wider and 15 mm taller than frame outer dimensions. Clean surfaces of dust and debris.
2. Frame positioning: Place frame into opening. Use a spirit level to confirm vertical (≤1 mm/m deviation) and horizontal alignment.
3. Frame fixing: Secure frame using M10 expansion bolts at 400 mm intervals on both jambs. Minimum 6 fixing points per jamb for doors above 2100 mm height.
4. Shim insertion: Insert stainless steel shims at hinge locations to prevent frame distortion. Maximum gap between frame and wall: 5 mm.
5. Gap sealing: Fill frame-to-wall gap with polyurethane foam (expansion ratio 1:30). Cure for 4 hours, then trim excess.
6. Leaf installation: Hang door leaf on hinges. Adjust hinge cams to achieve 2–3 mm gap between leaf and frame on all sides.
7. Lock alignment: Test all lock engagement points. Adjust strike plate position if bolt engagement depth is less than 20 mm.
8. Weatherstrip verification: Close door and check continuous compression of EPDM bulb seal around full perimeter. No light gaps visible.

Weatherproofing and Water Ingress Prevention

Exterior security doors use a triple-seal system to achieve water tightness:

Water tightness test results per GB/T 7106:

• Class 4 (600 Pa pressure differential): No water penetration at 4 L/min·m² spray rate for 10 minutes
• Class 5 (700 Pa): Minor water trace at threshold joint, no ingress beyond seal line
• Wind pressure resistance: Class 6 (5,000 Pa) — equivalent to 210 km/h wind speed

A threshold drain channel (8 mm wide, 5 mm deep) with 3° slope directs water outward. Weep holes at 200 mm intervals prevent water accumulation in the frame track.

Manufacturing Process, Certifications, and Project Cases

Powder Coating and Surface Treatment Parameters

Aluminum profiles undergo the following surface treatment sequence before assembly:

Color options include RAL 7016 (anthracite grey), RAL 9005 (jet black), RAL 8014 (sepia brown), RAL 7044 (silk grey), and custom wood-grain sublimation finishes. Salt spray test: 1,500 hours with no blistering, cracking, or coating loss exceeding 1% per ASTM B117.

Alternative finish: PVDF fluorocarbon coating (70% Kynar 500 resin) for coastal and high-UV environments. Coating thickness: 40 μm minimum. Weatherability: 3,000 hours QUV-B test with ΔE ≤ 5.0.

Certification Standards and Test Data

ROGENILAN security doors carry the following certifications:

Project Case: Residential Complex in Manila, Philippines

Project: 320-unit residential complex, Manila, Philippines (2025)

Compared to the developer’s previous supplier (local Philippine fabrication), the ROGENILAN doors cost 18% less per unit while delivering RC3 forced-entry certification and 32 dB sound insulation — neither of which the previous doors carried. The project passed local building inspection on first submission.

Comparison: ROGENILAN vs. Market Average

For procurement teams evaluating security door wholesalers in China, the price-to-performance ratio favors configurations with steel core inserts and mineral wool or PU foam filling. The RC3/RC4 forced-entry certification, combined with 1,500-hour salt spray resistance, positions these doors for projects in coastal and high-security regions at a 40–60% cost reduction compared to European-manufactured equivalents of similar specification.