Overview
High-temperature resistant air ducts are engineered to handle extreme heat in industrial environments where conventional ducts would fail. These systems are critical in applications like metalworking, power generation, and chemical processing, where hot gases or exhaust need to be channeled without compromising safety or efficiency. Their design often incorporates multi-layer construction, including an inner liner for thermal resistance, a reinforcement layer for durability, and an outer jacket for protection. The choice of materials—such as silicone-coated fabrics for flexibility or rigid stainless steel for high-pressure systems—depends on specific operational demands.
Structure and Working Principle
These ducts typically feature a composite structure. For flexible variants, a spiral-wound metal wire supports the duct shape, while heat-resistant fabrics (e.g., fiberglass with silicone) form the inner layer. Rigid ducts use welded or bolted metal sections with insulating liners. The working principle relies on maintaining airflow integrity under thermal stress. The inner layer reflects or absorbs heat, while the reinforcement prevents collapse or deformation. Some designs include cooling fins or double walls to further reduce external surface temperatures.
Key Features
1. **Thermal Stability**: Withstands continuous temperatures up to 500°C (higher for specialized alloys), with minimal expansion or degradation. 2. **Chemical Resistance**: Silicone coatings resist oils, acids, and alkalis, making them suitable for harsh industrial environments. 3. **Customizability**: Available in diameters from 50mm to over 1m, with options for flanges, dampers, or insulation jackets. Rigid ducts excel in high-pressure applications, while flexible ducts offer installation ease in confined spaces. Both types prioritize low particulate shedding to maintain air quality.
Application Areas
1. **Industrial Furnaces**: Transporting exhaust gases from smelters or kilns. 2. **Power Plants**: Ventilation for boiler systems and turbine halls. 3. **Automotive**: Paint booth exhausts and drying tunnels. 4. **Food Processing**: Heat recovery systems in baking or sterilization lines. In the chemical industry, these ducts handle corrosive fumes, while semiconductor factories use ultra-clean versions to prevent contamination during high-temperature processes.
Maintenance and Precautions
Regular inspections for cracks, delamination, or joint leaks are essential. Flexible ducts should be checked for wire frame damage, which can cause collapse. Clean interiors periodically to prevent combustible dust accumulation. Avoid sharp bends exceeding the manufacturer’s radius specifications, as this reduces lifespan. For rigid ducts, thermal expansion joints may be necessary in long runs. Always follow local codes for fire-rated installations.
B2B Procurement Guide
When sourcing, specify: - **Temperature range**: Include peak and continuous operating temps. - **Pressure requirements**: Static pressure (e.g., 500–2000 Pa) affects material thickness. - **Chemical exposure**: List gases or particulates in the airflow. Lead times vary; custom sizes may take 2–4 weeks. Bulk orders (100+ meters) often qualify for 10–15% discounts. Verify certifications like ISO 9001 or ASTM standards for quality assurance.
Related Manufacturers
- 主营：[]
- 主营：密封罩、除臭装置、臭氧池盖、玻璃钢管道、拱形盖板、弧形盖板、生物除臭箱、玻璃钢集气罩、生物除臭设备、污水池生物箱、玻璃钢污水罩、玻璃钢保温壳罩
- 主营：电缆槽盒、桥架管箱、电缆桥架、耐高温槽盒、走线槽盒、阻燃电缆线槽、防火阻燃槽盒、玻璃钢电缆槽、桥架电缆线槽
- 主营：玻璃钢冷却塔、闭式塔、开式塔、玻璃钢管道、玻璃钢横流塔、全钢横流塔、逆流塔、圆形塔、方形塔、玻璃钢储罐、玻璃钢盖板、玻璃钢水箱
- 主营：排水管、桥架管箱、格栅盖板、地埋管道、玻璃钢管道、大口径管道、耐高温电缆线架、地网格板、电缆桥架、玻璃钢桥架、洗车房盖板、排水排污管、玻璃钢格栅、排水沟盖板、切割拼接网格、除臭玻璃钢管、桥架电缆线槽、电力电缆保护管、玻璃钢树池格栅、槽式梯式波纹板、通风排污缠绕管
- 主营：玻璃钢管道、玻璃钢夹砂管道、玻璃钢排水管道、玻璃钢排污管道、玻璃钢工艺管道、玻璃钢通风管道、玻璃钢风管
- 主营：污水收集池、污水处理设备、隔油池储水罐、玻璃钢化粪池
- 主营：化粪池、地格栅、桥架槽盒、地沟盖板、格栅盖板、电线槽盒、电缆桥架、玻璃钢桥架、羊床网格板、光伏走道板、绝缘桥架槽、地沟树篦子、污水处理设备、阻燃电缆线槽、洗车房地网格板
- 主营：电缆保护管、玻璃钢夹砂管、玻璃钢排水管、通风管道、玻璃钢管道、玻璃钢供水管道、玻璃钢管、玻璃钢电缆管、夹砂管、电力管、电缆管、BWFRP电缆管
- 主营：[]
- 主营：桥梁伸缩缝、桥梁橡胶支座、盆式橡胶支座、管道封堵气囊、板式橡胶支座、建筑支座、橡胶止水带、网架球铰支座、球型钢支座、单组份聚硫密封胶、双组份聚硫密封胶、双组份聚氨酯密封胶、单组份聚氨酯密封胶、橡胶气囊、遇水膨胀止水胶、建筑隔震软管
- 主营：pp洗涤塔、PP喷淋塔、PP废气处理塔、PP通风管道、PP活性炭吸附箱、PP干式吸附箱、PP吸附箱、PP风管
- 主营：不锈钢风管、螺旋风管、角铁法兰风管、通风管道、共板法兰风管
- 主营：[]
- 主营：一体化提升泵站、一体化泵站、一体化雨污水提升泵站、玻璃钢通风管管道、地埋式一体化泵站、一体化泵站定制、市政雨水排一体化泵站、厂区污水一体化泵站、一体化污水提升泵站、玻璃钢一体化泵站、一体化预制泵站、一体化雨水泵站、工业园区污水泵站、农村一体化提升泵站、一体化泵站厂家直销、乡镇污水处理泵站、农村灌溉一体化泵站
- 主营：铝箔复合酚醛保温板、无纺布酚醛保温板、sip保温板、化工防火通风管道、酚醛石膏保温板、酚醛复合风管、酚醛管壳、酚醛板复合芯材、室内保温装饰一体板、酚醛复合板、酚醛彩钢板、隧道专用聚酚醛保温板
- 主营：波纹补偿器、非金属补偿器、波纹膨胀节、管道补偿器、波纹伸缩节、矩形补偿器、金属软管、套筒补偿器
- 主营：机床导轨防护罩、尼龙拖链、风机软连接、消防管道软连接、钢铝拖链、钢板防护罩、散装伸缩布袋、塑料拖链、风琴防护罩、油缸保护套
- 主营：钢制伸缩器、可曲挠橡胶接头、鸭嘴阀、风道烟道煤管道补偿器、补偿器、伸缩节、伸缩器、软接头、防水套管、柔性套管、橡胶接头、橡胶软接头、止回阀、刚性防水套管、双法兰伸缩接头、单法兰伸缩接头、铸铁伸缩器、套筒补偿器、套管伸缩器、轴向外压补偿器、不锈钢波纹补偿器、橡胶弯头、偏心异径橡胶接头、丝扣橡胶接头
- 主营：非金属补偿器、非金属膨胀节、金属波纹补偿器、耐高温非金属补偿器、烟风道非金属补偿器、不锈钢补偿器、金属膨胀节、通风蝶阀、金属软管、非金属柔性补偿器、矩形非金属膨胀节、圆形非金属补偿器、非金属蒙皮补偿器、矩形非金属补偿器、非金属软连接、织物补偿器、非金属织物补偿器、除尘器入口膨胀节、脱硫非金属补偿器、非金属蒙皮膨胀节、非金属高温膨胀节、烟道非金属膨胀节、蒙皮软连接、锅炉非金属膨胀节、不锈钢膨胀节
- 主营：布袋除尘器、除尘滤袋、仓顶除尘器、风道防火、除尘骨架、不锈钢除尘器、塑烧板除尘器、除尘布袋、单机除尘器、脉冲布袋除尘器、卸料器、滤筒除尘器、喷淋塔、螺旋输送机、插板阀、电控柜、活性炭、油烟净化器、催化燃烧设备、活性炭吸附箱
- 主营：不锈钢水箱、不锈钢立柱、不锈钢、不锈钢屏风、不锈钢楼梯、不锈钢台面、不锈钢镀锌风管、不锈钢非标件、不锈钢加工定制、不锈钢立柱配件、立式不锈钢储罐、单层不锈钢罐体、不锈钢通风管、不锈钢无缝管、不锈钢钣金折弯、不锈钢钣金加工、不锈钢电池充电架定制、不锈钢货架定制、不锈钢酒柜、不锈钢冷拉镜面扁钢、不锈钢天沟水槽、不锈钢焊管、304不锈钢水沟盖板、不锈钢毛细管、玻璃栏杆扶手
- 主营：粉磨机、排气管、发电机、含尘管道、风粉管道、除湿机、垃圾炉、伸缩器、磨煤机、除尘器、缓冲罐、排渣机、空预器、冷却塔、燃煤机、输送机、锅炉圈带、导热设备、焦化圈带、织物蒙皮、织物圈带、柔性圈带、空冷机组、柔性蒙皮、高压圈带
- 主营：货架、不锈钢产品、厨房设备、厨具、不锈钢水池、不锈钢工作台、钢板工作台、不锈钢洗手池、雨棚、钢结构
- 主营：喷淋管、检查井、玻璃钢、污水管道、排风管道、缠绕管道、法兰管道、耐磨管道、夹砂管道、供水管道、高压管道、排水管道、市政管道、电缆管、kcg纤维、纤维编、排污管、复合管、圆形风管、烟道烟囱、排烟风管、法兰弯头、胶衣弯头、过滤砂缸、纤维内衬
- 主营：防水套管、柔性防水套管、刚性防水套管、风道补偿器、人防密闭套管、防护密闭套管、波纹补偿器、补偿器、套筒补偿器、波纹膨胀节、膨胀节、刚性套管、柔性套管、通风套管、密闭套管、电气套管、组合套管、止水套管、预埋套管、旋转补偿器、橡胶接头、橡胶软接头、橡胶软连接、伸缩器、伸缩接头、传力接头
- 主营：补偿器、波纹膨胀节、伸缩接头、矩形风道橡胶补偿器、金属波纹管、双法兰传力接头、套筒补偿器、旋转补偿器、支吊架、隔热管托、球形补偿器、大拉杆横向型波纹补偿、复式膨胀节、法兰金属软管、不锈钢金属软管、高压金属软管、高压旋转补偿器、弹簧支吊架、伸缩节、膨胀节、非金属补偿器、非金属膨胀节、曲管压力平衡型膨胀节、波纹套筒复合型膨胀节、双向套筒补偿器、外压轴向型膨胀节
- 主营：补偿器、波纹管、鸭嘴阀、管道接头、管道软接头、伸缩器、减震器、连接器、密闭管、伸缩节、防水管、伸缩接头、补偿接头、橡胶弯头、传力接头、接头安装、防水套管、橡胶接头、金属软管、柔性接头、可拆卸接头、橡胶软连接、橡胶软接头、柔性止回阀、金属膨胀节
- 主营：非金属补偿器、金属膨胀节、烟道非金属膨胀节、电厂烟风道补偿器、管道膨胀节、管道伸缩节、高温耐腐蚀补偿器、烟风道用补偿器、高温补偿器、大口径补偿器、金属波纹膨胀节、双法兰伸缩器、轴向型膨胀节、横向型膨胀节、非金属蒙皮补偿器、织物非金属补偿器、矩形烟道补偿器、硅橡胶非金属补偿器、氟橡胶补偿器、复合蒙皮补偿器