Aluminum Doors and Windows Manufacturer in China | Technical Specs & Factory Pricing

Aluminum Door Product Specifications and Technical Data

Aluminum door manufacturing requires precise engineering across profile extrusion, thermal barrier integration, and hardware compatibility. Standard residential aluminum door profiles use 6063-T5 aluminum alloy with a wall thickness of 1.8 mm to 2.0 mm for exterior applications. Commercial-grade aluminum doors increase to 2.2 mm to 2.5 mm profile thickness for heavy-traffic installations.

Profile Configurations by Application

Exterior aluminum doors are built with thermal break technology using 24 mm to 34 mm polyamide (PA66 GF25) insulating strips. The standard U-value range for a thermal break aluminum door is 1.8 W/m²K to 2.4 W/m²K with double-glazed 5 mm + 12A + 5 mm insulating glass. For projects requiring passive house certification, U-values drop to 0.8 W/m²K using triple-glazed configurations with 5 mm + 12A + 5 mm + 12A + 5 mm glass and 44 mm thermal break profiles.

Interior aluminum doors use 1.4 mm to 1.6 mm profiles without thermal breaks. Frame depths range from 45 mm to 65 mm depending on the door weight and leaf size. Maximum single leaf dimensions for standard aluminum door configurations reach 1,200 mm wide by 2,400 mm tall. Double-leaf configurations accommodate openings up to 2,400 mm by 3,000 mm.

Hardware and Sealing Systems

Multi-point locking hardware is standard on exterior aluminum door installations. Locking points at 2, 3, or 5 positions engage the full-height strike plate along the frame. EPDM (ethylene propylene diene monomer) rubber gaskets are specified for all weather seals, rated for -40°C to 120°C temperature range without hardening or cracking. Air infiltration testing on a properly sealed aluminum door reaches Class 4 rating under EN 12207 (below 3.0 m³/h·m at 600 Pa).

Aluminium Windows and Doors: Material Standards and Quality Control

The quality of aluminium windows and doors depends on three material layers: the aluminum alloy, the surface treatment, and the thermal barrier. Each layer has measurable specifications that determine the final product performance and lifespan.

Aluminum Alloy Grades and Mechanical Properties

6063-T5 is the standard alloy for aluminium windows and doors profiles, with tensile strength of 160 MPa minimum, yield strength of 110 MPa, and elongation of 8%. For heavy-duty structural frames in large-span aluminium windows and doors, 6060-T66 alloy is specified with tensile strength up to 215 MPa. The chemical composition is verified with spectrometer analysis per batch: silicon (0.20-0.60%), magnesium (0.45-0.90%), iron (max 0.35%), copper (max 0.10%), manganese (max 0.10%), and zinc (max 0.10%).

Surface Treatment Technologies

Three surface treatment methods are standard for aluminium windows and doors:

Powder Coating: Polyester powder applied at 60-80 μm thickness, cured at 180-200°C for 10-15 minutes. Color retention verified through QUV accelerated weathering test (1,000 hours, ASTM G154). Standard color options include RAL 9016 (traffic white), RAL 7016 (anthracite grey), RAL 9005 (jet black), and wood-grain transfer finishes.

Anodizing: Electrolytic oxidation process producing 10-25 μm oxide layer thickness. AA15 (15 μm) for interior applications, AA20 (20 μm) for exterior use, AA25 (25 μm) for coastal environments with high salt exposure. Anodized aluminium windows and doors maintain surface integrity for 20+ years without peeling or chalking.

PVDF (Polyvinylidene Fluoride): Two-coat or three-coat system with 25-35 μm total dry film thickness. PVDF coatings on aluminium windows and doors are specified for projects requiring AAMA 2605 compliance with 10-year color retention guarantees.

Windows and Doors Price Breakdown and MOQ Data

Factory-direct pricing for windows and doors from China follows a transparent tiered structure based on configuration, glass specification, and quantity. The data below reflects FOB (Free On Board) pricing from manufacturing facilities in China’s aluminum extrusion hub.

Windows and Doors Price Table by Product Type (FOB China, USD)

Price differences between standard and thermal break configurations average 40-55%. The thermal break premium is driven by the PA66 insulating strip cost and additional machining steps to create the two-chamber profile design. Glass specification accounts for 25-35% of total product cost. Double-glazed 5 mm clear + 12A + 5 mm clear is the baseline. Upgrades to Low-E coated glass add $12-18/sqm. Laminated safety glass adds $20-30/sqm. Triple glazing increases glass cost by 50-60%.

Cost Comparison: Standard vs Thermal Break vs High-End

Doors and Windows Manufacturing Process and Technical Specifications

The production of aluminum doors and windows involves seven sequential stages from raw billet to finished product. Each stage has defined process parameters that directly affect the structural integrity and thermal performance of the doors and windows systems.

Extrusion and Aging Parameters

6063 aluminum billets are heated to 460-500°C before extrusion through steel dies at pressures of 1,500-2,500 tons. Extrusion speed is controlled at 15-40 m/min depending on profile complexity. Post-extrusion, profiles enter the aging oven at 185°C for 6-8 hours (T5 temper) to achieve full mechanical properties. Each batch of doors and windows profiles is tested for hardness (8-12 Webster scale), tensile strength, and dimensional tolerance (±0.3 mm on cross-section dimensions).

Thermal Break Insertion and Assembly

For thermal break doors and windows, the PA66 GF25 insulating strips are mechanically crimped into the aluminum profiles using a three-axis rolling machine. The rolling pressure is calibrated at 30-40 MPa with wheel feed rate of 8-12 m/min. Shear strength between aluminum and PA66 must exceed 24 N/mm according to GB/T 23615.1 standards. The crimped profiles are then cut to length with ±0.5 mm tolerance using CNC double-head saws.

Corner Assembly and Sealing

Corners of doors and windows frames are joined using a two-component method: mechanical crimping via corner crimping machine at 6-8 MPa pressure, followed by injection of two-part epoxy sealant into the corner cavity. The epoxy cures in 4-6 hours at 25°C, creating a waterproof corner joint. Watertightness testing is performed at 100% on production samples, spraying water at 2 L/min·m² at pressure differentials up to 600 Pa. Passing standard: zero visible water ingress after 15 minutes.

Certification Requirements and Testing Standards

Aluminum doors and windows exported from China require third-party certification to enter regulated markets. The following certifications are maintained for doors and windows products shipped internationally.

International Certification Matrix

Performance Testing Data by Product Type

Third-party laboratory test results for standard aluminum doors and windows configurations:

Procurement: Payment Terms, Delivery Schedules, and Packaging

Payment Terms and Order Flow

Standard payment terms for aluminum doors and windows orders are 30% deposit with order confirmation and 70% balance before shipment. For orders exceeding $50,000, a letter of credit (L/C) at sight is accepted from established importers. The production cycle from deposit receipt to ready-for-shipment status follows this timeline:

Packaging Specifications

Each aluminum door or window unit is individually wrapped in PE (polyethylene) protective film (0.08 mm thickness) to prevent surface scratching during transport. Corner protectors made of recycled cardboard (3 mm thickness) are fitted on all four corners. Units are then placed in export-grade plywood crates (12 mm thick, fumigated per ISPM 15 standards). Crate internal dimensions accommodate 8-15 window units or 4-6 door units depending on product dimensions. Moisture-absorbing silica gel desiccant packets (500 g per crate) are included for sea freight shipments.

For full container load (FCL) shipments, a 20-foot container holds approximately 180-220 sqm of aluminum windows and doors. A 40-foot HQ container holds 380-450 sqm. Freight options include FCL (recommended for orders above 80 sqm to minimize per-unit freight cost) and LCL (less than container load) consolidation service for smaller trial orders.

Installation Guidelines for Aluminum Door and Window Systems

Opening Preparation and Anchor Systems

The rough opening for aluminum doors and windows must be square within 3 mm diagonal tolerance and plumb within 2 mm per meter of height. Anchor points are spaced at maximum 600 mm intervals from corners and 150 mm from each corner. Stainless steel (A2-70 or A4-80 grade) frame anchors or expansion bolts of minimum M8 diameter are specified. For concrete substrates, embedment depth is 50 mm minimum. For timber frame construction, 65 mm long stainless steel wood screws are used with minimum 35 mm thread engagement in the structural timber.

Waterproofing and Insulation Integration

The window-to-wall connection for aluminum doors and windows requires three sealing layers:

External Seal (Weather Barrier): Compriband pre-compressed expanding foam tape (BG1 classification, 15-25 mm width) applied to the outer face of the frame, expanding to fill 5-15 mm perimeter gaps. This tape is vapor-open (Sd value <0.5 m) to allow moisture vapor escape while preventing driving rain penetration.

Middle Seal (Thermal/Acoustic): PU (polyurethane) expanding foam injected into the 10-20 mm frame-to-wall cavity. Low-expansion foam (expansion ratio <1:2) prevents frame distortion. The foam is trimmed flush after 2-hour curing and provides R-value contribution of approximately R-0.7 per 25 mm.

Internal Seal (Airtightness): Butyl rubber-based sealant or silicone sealant applied to the interior frame-to-wall junction. Sealant bead width minimum 8 mm with continuous application to achieve the designed air permeability class. The internal seal is the primary air barrier and must remain intact for the service life of the aluminum doors and windows installation.

Commissioning and Adjustment

After installation, each operable unit of aluminum doors and windows must undergo functional testing. Operating forces are measured with a digital force gauge: sliding sashes must move at <50 N initial force, <30 N sustained sliding force. Casement and hinged door hardware closing force must be 30-80 N at the handle. Compression of weather seals is checked with a 0.1 mm feeler gauge at 5 evenly spaced points along the sash perimeter; the feeler gauge must not pass between sash and frame at any compression point. Locking mechanisms are cycled 10 times to verify smooth engagement and full bolt throw into the strike plate.

For additional technical specifications on aluminum window profiles, see aluminum window products at ROGENILAN. For thermal break sliding door configurations, visit sliding door specifications. Complete door system catalogs are available at aluminum door product range.