卷帘门选购，很多人只看“价格”和“外观”，结果用了一年就发现——临街商铺的门被撬了、车库门锈得推不动、厂房门在台风天变形卡死。实际上，卷帘门的选型逻辑很简单：先看使用场景，再定材质和功能。

When choosing a rolling shutter door, many people only look at the "price" and "appearance", but after using it for a year, they find that the door of the street facing shop has been pried, the garage door is rusted and cannot be pushed, and the factory door has deformed and stuck during typhoons. In fact, the selection logic of rolling shutter doors is very simple: first look at the usage scenario, and then determine the material and function.

按场景选类型：五种常见门型各归其位

Select type by scene: Five common door types are assigned to their respective positions

商业店铺/大门：防盗是首要需求。钢制卷帘门防盗性能强，适合临街商铺；铝合金卷帘门轻巧美观，表面可喷涂木纹或砂纹，适合对颜值有要求的店招场景。

Commercial stores/gates: theft prevention is the primary requirement. Steel rolling shutter doors have strong anti-theft performance and are suitable for street facing shops; Aluminum alloy rolling shutter doors are lightweight and beautiful, with a surface that can be sprayed with wood grain or sand grain, suitable for store sign scenes with aesthetic requirements.

住宅/小型车库：铝合金卷帘门轻巧、耐腐蚀、性价比高，是非常常见的选择。小单车库（宽度≤3m，高度≤2.5m）选55型号帘片，双车库选77型号帘片。

Residential/Small Garage: Aluminum alloy rolling shutter doors are lightweight, corrosion-resistant, and cost-effective, making them the most common choice. For small single garage (width ≤ 3m, height ≤ 2.5m), choose model 55 curtain panels, and for double garage, choose model 77 curtain panels.

工业厂房/物流通道：对快速隔离、保温和防尘有要求，应选PVC快速卷帘门，升降速度可达0.6米/秒。

Industrial plants/logistics channels: PVC quick rolling shutter doors with a lifting speed of up to 0.6 meters per second should be selected for fast isolation, insulation, and dust prevention requirements.

强腐蚀/潮湿环境（沿海、化工厂）：铝合金卷帘门抗腐蚀、不易生锈，比镀锌钢板更适合。

Strong corrosion/humid environment (coastal, chemical plants): Aluminum alloy rolling shutter doors are corrosion-resistant and not easy to rust, making them more suitable than galvanized steel plates.

消防强制要求场所：建议选防火卷帘门，耐火出色需符合当地消防规范。普通钢质卷帘F1级耐火1.5h、F2级2.0h；复合型F3级2.5h、F4级3.0h。

Mandatory fire safety requirements: Fireproof rolling shutter doors must be selected, and the fire resistance limit must comply with local fire safety regulations. Ordinary steel roller blinds have a fire resistance of 1.5 hours for F1 grade and 2.0 hours for F2 grade; composite F3 grade has a fire resistance of 2.5 hours and F4 grade has a fire resistance of 3.0 hours.

帘片选材三要素：厚度、材质、涂层

Three elements of curtain material selection: thickness, material, and coating

帘片是卷帘门的“骨架”，直接决定抗风、防盗和保温性能。厚度方面：家用/小型商铺，单层彩钢板≥0.8mm；双层铝合金中空款≥1.0-1.2mm；工业重载款≥1.5mm。材质方面：铝合金轻便耐腐蚀；彩钢板性价比高；不锈钢强度高、防锈好。涂层方面：表面涂层厚度≥60μm，静电喷涂或热镀锌工艺，能防锈褪色。非常提醒：临街重载、多风地区，抗风等级需≥600Pa（5级），沿海或强风区域非常好做到1000Pa以上。

The curtain is the "skeleton" of the rolling shutter door, directly determining its wind resistance, anti-theft, and insulation performance. In terms of thickness: for household/small shops, single-layer color steel plate ≥ 0.8mm; double-layer aluminum alloy hollow version ≥ 1.0-1.2mm; industrial heavy-duty version ≥ 1.5mm. In terms of material: lightweight and corrosion-resistant aluminum alloy; Color steel plate has high cost-effectiveness; Stainless steel has high strength and good rust resistance. Coating aspect: Surface coating thickness ≥ 60 μ m, electrostatic spraying or hot-dip galvanizing process, can prevent rust and fading. Special reminder: In areas with heavy loads and strong winds facing the street, the wind resistance level must be ≥ 600Pa (level 5), and it is best to achieve a wind resistance level of 1000Pa or above in coastal or strong wind areas.

驱动电机：选错参数，三天两头烧电机

Drive motor: selecting the wrong parameters, burning the motor twice a day

电机是卷帘门的“心脏”，也是故障率非常高的部件。家用车库（≤4m宽）：220V单相管状电机，功率300-600W，承重300-500kg。商铺门（4-6m）：800-1000W电机。工业大门（＞6m）：380V三相电机，功率1.1-2.2kW。关键硬指标：防护等级（室内IP44，户外IP54/IP65）；运行噪声≤65dB（A）；启闭速度0.10-0.30m/s；断电时手动启闭力≤260N。正规电机建议带过热保护、过载保护、遇阻反弹（灵敏度≤50N），这是安全底线。

The motor is the "heart" of the rolling shutter door and also the component with the highest failure rate. Household garage (≤ 4m wide): 220V single-phase tubular motor, power 300-600W, load capacity 300-500kg. Shop door (4-6m): 800-1000W motor. Industrial gate (>6m): 380V three-phase motor, power 1.1-2.2kW. Key hard indicators: protection level (indoor IP44, outdoor IP54/IP65); Operating noise ≤ 65dB (A); Opening and closing speed 0.10-0.30m/s; When the power is cut off, the manual opening and closing force should be ≤ 260N. Regular motors must be equipped with overheat protection, overload protection, and rebound in case of resistance (sensitivity ≤ 50N), which is the safety bottom line.

一句话总结： 卷帘门选型三步走——场景定类型、材质定寿命、电机定耐用度。不搞清楚这三件事，省钱就是花钱的开始。

Summary in one sentence: The selection of rolling shutter doors follows three steps: scene type, material life, and motor durability. Without understanding these three things, saving money is the beginning of spending money.

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