Hunan Haolv Building Materials Co., Ltd. is a manufacturer of High Performance Bay Windows Double Glazed systems with 19 years of industry experience. Our commercial solutions are built with reinforced aluminium frames, with thermal break technology, providing U-values down to 1.4 W/m²K for maximum insulation. Every product is ISO, CE and AAMA certified and is thoroughly quality tested before shipping.
We provide variable opening configurations: swing, slide or automated systems to suit different architectural needs. We have strategic alliances with top material suppliers like CONCH that assure constant quality, and our supply chain is efficient with delivery within 25-30 days from order confirmation.

The product units are insulated glass units that are filled with argon gas for increased thermal efficiency. Impact resistance and safety compliance for commercial applications are available using tempered or laminated glass.
The multi-chamber frames restrict heat transmission while retaining structural integrity. Weather resistant seals prohibit air and water intrusion providing long term performance in various conditions. Optional Low-E coatings reflect heat back into interior rooms to promote energy saving.
| Feature | Specification |
|---|---|
| Frame Material | Reinforced Aluminum (6063-T5) |
| Glass Type | Tempered / Laminated / Insulated |
| Glazing Gap | 12mm / 16mm / 20mm |
| U-Value | 1.4 – 2.0 W/m²K |
| Sound Reduction | Up to 38 dB |
| Air Tightness | Grade 8 (EN 12207) |
| Water Tightness | Grade 9A (EN 12208) |
| Wind Load Resistance | Up to 2400 Pa |
| Opening Systems | Swing / Sliding / Automatic |
| Finish Options | Powder Coating / Anodizing |
OEM/ODM capability for total design freedom on your project. Specify frame size, colour finishes, hardware types and glass combinations to suit architectural aspirations. The engineering team offers technical drawings and system suggestions based on building regulations and environmental considerations.
From the earliest design to final manufacturing, we work closely together to ensure that requirements are aligned with project objectives. Free sample assistance is available to check quality before bulk purchase, and open communication along the production process.



All Bay Windows Double Glazed are supplied with multi-point locking mechanisms as standard. These devices operate at three or more locations throughout the perimeter of the frame for a dramatic increase in security against forced entrance.
Thanks to access control compatibility, it can be integrated with contemporary building management systems. The ground floor applications are further protected by reinforced hinges and anti-lift mechanisms. Laminated glass alternatives provide extra safety advantages by keeping the shards together when broken, which reduces the chances of injuries in busy areas.
Double glazing substantially reduces heating and cooling costs by creating an insulating barrier between interior and exterior environments. Thermal break technology within aluminum frames prevents temperature transfer through conductive materials.
Low-E coatings reflect infrared radiation while allowing visible light transmission, maintaining comfortable indoor temperatures year-round. Argon-filled gaps between glass panes offer better insulation than standard air-filled units. These features contribute to LEED certification requirements and demonstrate commitment to sustainable building practices.
Bay Windows Double Glazed systems are ideal for a range of commercial applications, including corporate offices, retail shopfronts, shopping malls and hospitality facilities. Aesthetic appeal and functional performance combine to increase property value and decrease operating costs.
Its architectural versatility enables it to be used in both new construction and rehabilitation projects. Contemporary design trends are calling for modern finishes that create attractive entrances that generate excellent first impressions. The rugged structure is designed to endure regular usage in high-traffic areas without sacrificing beauty or performance.

Q: What lead time should we expect for custom orders?
A: Standard production takes 25–30 days from order confirmation to shipment, depending on customization complexity and order volume.
Q: Do you provide installation guidance?
A: Yes, our technical team offers detailed installation manuals, CAD drawings, and remote consultation to ensure proper fitting and performance.
Q: What warranty coverage is included?
A: We provide comprehensive warranty support covering manufacturing defects and material quality, with specific terms detailed in order agreements.
Q: Can your systems meet local building codes?
A: Our products comply with international standards including CE and AAMA. We can adjust specifications to meet regional requirements with proper documentation.
Q: Are samples available before bulk purchase?
A: Free samples are available for quality verification, with shipping costs covered by the buyer.
Simplify your procurement process with our one-stop solution covering frames, glass, and hardware from a single reliable source. Contact our Bay Windows Double Glazed's team at kristin@haolvwindows.com to discuss project requirements and receive customized proposals today.

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