Top China Aluminum Storm Windows Manufacturers & Suppliers

Authentic impact compliance requires third-party testing conducted by accredited laboratories (such as Intertek, CSA, or certified NATA/NFRC testing facilities). Genuine reports must detail specimen dimensions, glass schedule (including precise interlayer brand such as Kuraray SGP), missile impact speed (50 ft/s for ASTM Level D), and complete cyclic deflection diagrams through 9,000 cycles without structural separation. DERCHI supplies full, certified test reports and engineer-stamped calculations with every project submittal pack.

While all three evaluate envelope integrity under extreme meteorological events, their methodology differs:
• AS 2047 (Australia): Evaluates windows against AS 4055 wind categories (N1 to N6 for non-cyclonic; C1 to C4 for cyclonic). It focuses on serviceability limit state (deflection span/250), air infiltration thresholds, and strict water penetration resistance test pressures.
• ASTM E1886/E1996 (USA / International): Specifies physical missile impact (typically 9 lb 2x4 lumber shot at 34 mph) followed by positive and negative cyclic air pressure chamber oscillations.
• TAS 201/202/203 (Miami-Dade / Florida Building Code): The most demanding standard worldwide for High-Velocity Hurricane Zones (HVHZ), mandating large missile impact, structural uniform static load testing, and extended dynamic cyclic oscillations with zero perimeter gasket failure.

In conventional designs, thermal break polyamide strips can act as a structural weak link under intense cyclonic wind loads. DERCHI solves this by utilizing engineered 6063-T6 multi-chamber extrusions with heavy-duty 24mm to 34mm PA66 GF25 (25% fiberglass reinforced) thermal struts clamped using knurled teeth shear-resistant crimping. Combined with argon-filled low-E insulated glass units and warm-edge composite spacers, our storm systems achieve both high structural load capacity (DP 70+) and low thermal transmittance (U-factors ≤ 0.28).

Ocean transport across high-humidity equatorial waters exposes windows to salt air corrosion and vibration abrasion. DERCHI applies a four-tier protection protocol: (1) Anti-scratch electrostatic protective films across all aluminum finishes; (2) Heavy-duty corner wrap shields; (3) Multi-panel moisture barrier wrapping with industrial desiccants; (4) Custom-built, ISPM-15 compliant solid fumigation-free plywood crates secured with steel strapping and internal rubber dampeners.

Our 30-member engineering team prepares full architectural shop drawings, opening elevations, and glass/hardware schedules within 3 to 5 business days of receiving your architectural plans. Following sample sign-off and deposit confirmation, factory fabrication cycles typically range from 25 to 35 calendar days for custom-tailored residential villa orders and 35 to 45 days for multi-container commercial project volumes.

Yes. As an end-to-end manufacturer, DERCHI operates in-house tooling die development. We can engineer proprietary aluminum extrusion cross-sections tailored to specific architectural aesthetics or regional building traditions. Surface finishes include AAMA 2605 compliant PVDF fluorocarbon coatings (guaranteed 20+ years against coastal chalking and fading), architectural powder coating in any RAL palette, and hard-anodized marine finishes up to 25 microns.