China Wholesale Modern Double Entry Doors Manufacturer & Exporters

To provide an exact shop drawing and FOB/CIF quotation, our engineering team requires: (1) Architectural drawings or rough opening dimensions (Width x Height x Frame Depth); (2) Door system preference (Thermal break aluminum, steel security, solid wood hybrid, or pivot entrance); (3) Glazing specifications (Double/triple glazed, Low-E coating, tempered or SGP impact laminated); (4) Desired frame finish (RAL powder coating color, anodized, PVDF, or natural wood grain); (5) Hardware hardware requirements (Standard multi-point lock, biometric access control, or custom brand specified); and (6) Target destination port and compliance standards required for your region (e.g., CE, AS2047, NFRC, Miami-Dade NOA).

Non-thermal aluminum profiles consist of a solid aluminum structure that conducts thermal energy directly between the exterior and interior environment. In cold climates, this leads to rapid indoor heat loss, cold floor drafts, and severe frame condensation that can rot surrounding drywall and timber trim. In hot climates, it forces air conditioning units to work overtime. A thermal break door incorporates a rigid, low-conductivity Polyamide (PA66GF25) structural isolator between the interior and exterior aluminum profiles, stopping thermal transfer, preventing condensation, and allowing buildings to achieve strict energy efficiency ratings.

All surface treatments are executed entirely inside our 155,000 m² factory using fully automated vertical powder coating lines and chromate pre-treatment wash chambers. We utilize world-class architectural powder formulations from AkzoNobel, PPG, and Jotun. For severe coastal installations (within 1 km of ocean saltwater), we apply 3-coat Kynar 500 Fluorocarbon (PVDF) wet coatings or 25-micron anodized finishes that pass 10,000 hours of continuous acetic acid salt spray testing without blistering, chalking, or flaking.

Yes. As a direct manufacturer with in-house extrusion dies and CNC bending machines, over 85% of our export output is fully customized. We regularly manufacture oversized single and double entrance leaves up to 4.5 meters in height and 2.6 meters in width. Our engineering office performs structural deflection modeling to calculate required wall profile thickness, glass reinforcement, and pivot axis placement to ensure long-term structural integrity without leaf sagging.

Grandor security double doors integrate multi-layer anti-theft engineering: (1) Multi-point locking hardware with 5 to 11 stainless steel deadbolts engaging simultaneously across top, bottom, and side frame tracks; (2) Anti-pry interlocking steel hooks along the hinge side; (3) Hardened manganese anti-drill lock protection plates; (4) European Class-C anti-tamper lock cylinders; and (5) Heavy-duty 3D adjustable stainless steel hinges with anti-lift security pins.

Following order deposit, our CAD technical team produces detailed 1:1 scale shop drawings detailing cross-sectional profile views, wall connection anchoring, opening swing clearance, glass build-up, threshold drain pathways, and hardware cutout locations. Production begins only after the client, project architect, or general contractor signs and stamps the final official shop drawing revision.

Every door assembly undergoes a multi-layer protective packaging sequence: (1) Surface protective film applied directly over coated metal profiles and finished timber faces; (2) Corner guard shock absorption caps; (3) Wrapped completely in thick EPE foam sheet insulation; (4) Sealed inside water-impermeable plastic film; and (5) Loaded into fully enclosed, fumigated solid plywood crates or iron-frame crates equipped with internal rubber padding and heavy-duty strapping to prevent movement during container transit.

Standard prototype/sample doors (including shop drawing approval) require approximately 15 to 20 business days. Full container orders (20GP / 40HQ) generally carry a manufacturing lead time of 25 to 35 calendar days from final shop drawing sign-off. Accelerated priority production tracks are available for urgent commercial construction deadlines.

We welcome third-party quality control inspections. International buyers frequently appoint accredited inspection agencies such as SGS, TÜV, Intertek, or BV to conduct pre-shipment auditing. Inspection officers have full access to audit frame dimensional tolerances, glass tempering stamps, paint film thickness, operation smoothness, seal compression, and packaging integrity prior to container loading.

You can request a complete B2B Architectural Sample Kit containing thermal-break profile cutaways, EPDM gasket samples, glass corner swatches, and powder-coating/wood-grain finish color chips directly by contacting our international sales team via the live chat or catalog request button below.