Q:
What technical data is required to receive an accurate factory quotation for custom security doors?
To prepare a precise proposal, provide architectural CAD elevations or opening schedules with rough opening dimensions (W x H), required frame finish (RAL colors, powder coating or anodizing), glazing specifications (double Low-E, SGP hurricane impact, bulletproof rating), lock hardware preferences (manual multi-point or smart biometric), and target destination port for FOB/CIF calculations.
Q:
Why choose thermal-break aluminum security doors over standard solid steel doors?
While steel doors offer strength, steel is vulnerable to surface rust in coastal environments and acts as a severe thermal bridge leading to heavy internal condensation. Thermal-break aluminum doors combine non-corrosive 6063-T6 aluminum alloy, structural PA66 GF25 thermal breaks, and internal armored steel cores—offering superior weatherability, high energy efficiency, zero rust, and modern design freedom.
Q:
How do Chinese factories safeguard oversized pivot doors against shipping damage?
Oversized security pivot doors require specialized logistics protection. Frames and sashes are packed in multi-layer protective PE film, corner-shielded with high-density EPE foam, wrapped in waterproof stretch film, and enclosed inside fully sealed IPPC ISPM-15 compliant fumigated plywood crates reinforced with internal steel framing straps to prevent twisting during ocean container transit.
Q:
Can Grandor customize door finishes to match exact local architectural codes?
Yes. Operating vertical surface treatment facilities in-house, Grandor provides custom RAL powder coating colors (AkzoNobel / PPG certified), Qualicoat Class 2 hyper-durable fluorocarbon (PVDF) finishes for harsh marine climates, wood-grain heat-transfer sublimation, and 25-micron anodizing finishes tailored to North American, European, and Australian aesthetic requirements.
Q:
What anti-burglary ratings do these security door systems achieve?
Depending on chosen internal core configurations and hardware selections, systems can be engineered to pass European EN 1627 RC2, RC3, and RC4 burglar resistance standards, as well as PAS 24 security performance criteria, utilizing anti-drill lock protection plates and hardened multi-point hook locks.
Q:
What is the standard production lead time for custom wholesale security door orders?
Upon final shop drawing approval and color sample confirmation, standard manufacturing lead time is approximately 25 to 35 business days. Complex custom orders requiring special bulletproof glass or custom mold extrusion typically take 35 to 45 business days.
