Overview
Ventilated galvanized sheet is a perforated steel sheet coated with zinc to prevent rust. It combines structural strength with airflow properties, making it ideal for applications requiring durability and ventilation. Commonly produced in thicknesses of 0.4–1.2 mm, it features standardized perforation patterns (e.g., round or slotted holes) that maintain mechanical integrity while allowing air circulation. The zinc coating typically follows ASTM A653 standards.
Structure and Working Principle
The sheet consists of a carbon steel base layer electroplated or hot-dipped with zinc (40–275 g/m²). Perforations are precision-punched to achieve 15–40% open area, balancing airflow and load-bearing capacity. In HVAC systems, the perforations enable air dispersion while the galvanized coating resists moisture-induced corrosion. For roofing applications, the material's rigidity and ventilation properties help regulate temperature and prevent condensation buildup.
Key Features
Superior corrosion resistance due to zinc's sacrificial protection, extending service life to 20+ years in moderate environments. The pre-punched design eliminates secondary drilling costs. Lightweight yet maintains tensile strength of 270–550 MPa. Available with different perforation geometries (e.g., staggered or straight-line patterns) to optimize airflow rates. Meets international standards like ASTM A653 (USA) and JIS G3302 (Japan).
Application Areas
Primarily used in HVAC ductwork for commercial buildings, where it ensures even air distribution. Industrial applications include machine guards, silo vents, and factory wall claddings. In agriculture, it serves as livestock building siding for hygiene control. Architects also utilize it for decorative facades, leveraging its aesthetic perforation patterns alongside functional benefits.
Maintenance and Precautions
Requires minimal maintenance—periodic cleaning with mild detergent suffices for most environments. Avoid chlorine-based cleaners that may degrade zinc coating. During installation, use gloves to handle sharp edges. For coastal areas, specify heavier zinc coatings (e.g., Z275) or additional anti-corrosion treatments. Store sheets flat to prevent warping before use.
B2B Procurement Guide
Verify material certifications (e.g., Mill Test Certificates) for zinc coating weight and steel grade. Standard sheet sizes are 1000×2000 mm or 1220×2440 mm; custom dimensions incur higher costs. Request samples to check perforation uniformity. Bulk orders (10+ tons) often qualify for 5–15% discounts. Lead times typically range from 2–6 weeks, depending on customization requirements.
Related Manufacturers
- 主营：螺旋风管、不锈钢风管、保温风管、通风管道、风管法兰、手动调节阀
- 主营：伸缩喷漆房、催化燃烧设备、活性炭吸附箱、镀锌螺旋风管、气旋塔、喷淋塔、布袋除尘器、滤筒除尘器
- 主营：消声器、不锈钢风管、静压箱、镀锌风管、排烟风机、共板风管、角铁风管、防火阀、调节阀、排烟风管、风机、风管、风机盘管、风机箱、管道风机、空气幕、风幕机
- 主营：抗震支架、成品支架、管廊支架、光伏支架
- 主营：不锈钢板、不锈钢管、不锈钢带、镀锌板、有花镀锌板、无花镀锌板、首钢镀锌板、唐钢镀锌板、不锈钢角钢、不锈钢槽钢、不锈钢扁钢
- 主营：防火阀、风机盘管、百叶风口、镀锌风管、空调风机、防爆风机、消防排烟、消防加压、叶排烟口、排烟风机、柜式排烟、电动风阀、加压送风口、不锈钢风阀、正压送风口、防火调节阀、风量调节阀、空调出风口、铝合金风口、中央空调风口、净化过滤风机、铝合金出风口、不锈钢电动阀、厨房排气风机、柜式离心风机
- 主营：共板法兰、螺旋风管、角钢法兰、通风管道、方型风管、风管法兰、风管弯头、排烟风机箱、方形三通、方弯头、内外直角弯头、变径弯头、外直内弧弯头、圆三通、圆弯头
- 主营：酒店排烟、矩形风管、车间暖通、镀锌螺旋管、排气通风管道、通风管道阀门、厨房通风管件、排烟风管、螺旋管道、厨房油网、螺旋风管、管道配件、厨房排烟罩、不锈钢风管、油烟收集罩、不锈钢油烟、管道圆形配件、不锈钢螺旋管
- 主营：调节门、排烟阀、排风管、通风管、通风机、镀锌钢板、铁皮风管、风机箱、防火板、调节阀、防火阀、消声箱、关风机、排烟管、保温钢管、混流风机、空调风管、镁质风管、排烟共板、螺旋管道、缠绕管道、风管定制、焊接风管、斜流风机、排烟空调
- 主营：木工除尘器、单机除尘器、一体机工业、螺纹通风管道、风管镀锌螺旋、弯头通风管道、通风管道镀锌、除尘器工业、除尘器除尘、布袋除尘器、净化器光氧、除尘器粉尘、配件风管弯头、活性炭吸附箱、除尘布袋涤纶、龙骨布袋骨架、木工除尘设备、除尘布袋工业、除尘布袋骨架、除尘设备脉冲、排烟管道弯头、活性炭一体机、工业废气处理、环保废气处理、废气处理成套
- 主营：风管、风管加工、镁质风管、镀锌风管、铁皮风管、不锈钢风管、螺旋风管、镁质复合风管、镁质防火风管、防火阀、共板风管、方形风管、304不锈钢风管、角铁法兰风管、焊接风管、电动防火阀、钢面镁质风管、复合防火风管、共板法兰风管、漂珠复合风管、静压箱、风机、消声器
- 主营：法兰管、共板风管、空调风管、镀锌风管、通风管道、镀锌卷板、法兰通风管、热镀锌角钢、白铁皮共板管、镀锌铁皮风管、通风排烟风管、角铁风管、法兰风管、排烟管道、矩形风管、机制风管、方形风管、不锈钢法兰、不锈钢共板、不锈钢风管、方形排烟管、角铁焊接风管、排风排烟除尘、排烟除尘管道、不锈钢排烟管
- 主营：涂镀层钢、镀铝锌、彩涂板、镀锌卷、镀锌钢板、热浸镀锌钢板、镀锌钢卷、家电镀锌钢板、白铁皮、热镀锌、镀锌板、vcm覆膜、彩钢卷、预涂层钢板、家电彩涂板、PCM彩涂板、家电面板、电解板、预涂板、冰箱彩涂板、彩钢瓦、彩钢板、锌钢板、覆膜板、家电外壳钢板
- 主营：油烟净化机、油烟净化器、饭馆厨房油烟、不锈钢通风、排烟离心风机、净化工程施工
- 主营：不锈钢烟囱、不锈钢风管、镁质复合防火风管、镀锌风管、碳钢通风管道、304不锈钢通风管道、70度防火阀、正压送风口、多叶排烟口、双层不锈钢保温烟囱、280度消防排烟防火、钢面镁质防火风管、一体化复合风管、预制式不锈钢烟囱、发电机烟囱、锅炉烟囱、旋流风口、不锈钢成品烟道、不锈钢焊接风管、共板法兰风管、角铁法兰风管