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Aluminum Spacer Bar
This flexible aluminum alloy spacer bar is made of high-quality 3003 rust-resistant aluminum alloy, using a high-frequency seamless welding process. With a wall thickness of 0.30-0.35mm, it boasts excellent toughness and structural stability, supporting continuous bending and forming by equipment, and is suitable for automated production.
Features
Renqiu City Xinjian Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of aluminum spacer bar in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale customized aluminum spacer bar from our factory. Also, free sample is available.
Aluminum Spacer Bar Classification and Sealing Process
Based on different forming methods and connection processes, aluminum alloy spacer bars are mainly divided into two categories:
* **Four-Corner Insert Type:**
This is the traditional method, requiring nylon inserts or metal parts at the four corners for assembly. This method has more joints, resulting in relatively poor edge sealing and a tendency for air and water leakage over long-term use.
* **Continuously Bended Aluminum Spacer Bar (High-Frequency Welded Flexible Aluminum Strip):**
Manufactured using advanced roll forming and high-frequency welding processes, it has good toughness and can be continuously bent into any angle using equipment. This method achieves a "right-angle connection" without connecting parts at the four corners, greatly improving the sealing effect and effectively extending the service life of insulated glass.
Aluminum Spacer Bar Specification System
Standard Width:
Common specifications include 6mm, 9mm, 12mm, 15mm, 16mm, 18mm, and 20mm.
Fixed Height:
The cross-sectional height is usually uniformly around 6.5mm.
Wall Thickness Control:
The wall thickness on one side is usually between 0.20mm and 0.35mm, with a limit deviation of only ±0.025mm.
Aluminum Spacer Bar Industry Trends and Recommendations
Cold Edge to Warm Edge Transition: Traditional aluminum strips are considered "cold edges" (high thermal conductivity), easily forming thermal bridges; warm edge spacers (such as TPSS composite strips) are gradually becoming more common, but aluminum strips still hold over 70% of the market share due to their cost advantage.
Prefer High-Frequency Welding Process: Especially suitable for wide-cavity glass of 9A and above (such as 12A and 15A), fewer seams result in more reliable long-term sealing.
Key Certification Verification: Look for the testing report from the National Building Materials Testing Center, focusing on verifying wall thickness, curvature, and molecular sieve activity indicators. Many people believe that flexible high-frequency aluminum spacer bars are slightly more expensive than ordinary aluminum strips, but considering the overall cost, their cost-effectiveness is extremely high. The product features integrated bending without corner fittings, directly saving on consumable costs. Automated processing saves time and labor, significantly reducing labor costs. More importantly, it completely solves the core problems of glass leakage and fogging, as well as rework and repairs, greatly reducing after-sales hassles. The product is well-made, has excellent sealing performance, is corrosion-resistant and aging-resistant, and is suitable for various building scenarios. It not only enhances the overall texture and quality of doors, windows, and curtain walls, but also helps businesses build a good reputation. In the long run, it saves money and is worry-free, making it an ideal choice for high-end insulated glass.
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