遮阳棚的核心是篷布——防晒、防水、抗老化全靠它。很多低价遮阳棚用普通牛津布或薄涂层布，一年不到就褪色开裂。懂得看材质参数，才能选到真正耐用的产品。

The core of sunshade is tarpaulin, which is responsible for sunscreen, waterproof and anti-aging. Many low-priced sunshades use ordinary Oxford cloth or thin coated cloth, which fades and cracks in less than a year. Only by understanding the material parameters can one select truly durable products.

篷布选材三档标准

Three standards for selecting tarpaulin materials

入门档（普通牛津布） ：克重≤350g/m?，寿命3年以内，价格便宜但不耐磨、易褪色。适合临时使用或低频率场景。

Entry level (ordinary Oxford cloth): Weight ≤ 350g/m? With a lifespan of less than 3 years, it is cheap but not wear-resistant and prone to fading. Suitable for temporary use or low-frequency scenarios.

工程档（PVC刀刮布） ：克重≥650g/m?，户外工程建议≥850g/m?。防水水压≥3000mm，UPF50+防晒，耐寒-20℃、耐热+70℃，正常使用6-10年。这是商业和工程项目的标配。

Engineering file (PVC knife scraping cloth): Weight ≥ 650g/m? For outdoor engineering, it is recommended to be ≥ 850g/m?. Waterproof water pressure ≥ 3000mm, UPF50+sun protection, cold resistance -20 ℃, heat resistance+70 ℃, normal use for 6-10 years. This is standard for commercial and engineering projects.

出众档（PVDF自洁布） ：带自洁涂层，灰尘不易附着，雨水冲刷即净，寿命可达10-15年。适合高档商业外摆、别墅庭院等场景。

High end grade (PVDF self-cleaning cloth): with self-cleaning coating, dust is not easy to adhere, it can be washed away by rainwater, and the lifespan can reach 10-15 years. Suitable for high-end commercial outdoor displays, villa courtyards, and other scenes.

骨架决定抗风能力

Skeleton determines wind resistance

铝合金骨架壁厚≥1.8mm（大跨度需≥2.2mm），表面热浸镀锌+静电喷塑，15年不生锈。镀锌钢管骨架壁厚≥1.5mm，焊接处建议补防锈漆。沿海潮湿区域建议用304不锈钢或铝合金，普通铁件半年就锈死。

The wall thickness of the aluminum alloy skeleton should be ≥ 1.8mm (≥ 2.2mm for large spans), and the surface should be hot-dip galvanized and electrostatically sprayed. It should not rust for 15 years. Galvanized steel pipe skeleton wall thickness ≥ 1.5mm, and anti rust paint must be applied to the welding joints. It is recommended to use 304 stainless steel or aluminum alloy in humid coastal areas, as ordinary iron parts will rust away within six months.

电机选购要点（电动款）

Key points for motor selection (electric version)

电机防护等级建议IP65及以上（露天淋雨不短路），配遇阻停机、过载保护、手动应急装置；大风多雨地区可加装风感、雨感自动启停。杂牌电机是遮阳棚故障的“头号元凶”，选型时确认电机品牌和保修年限。

The motor protection level must be IP65 or above (no short circuit in outdoor rain), equipped with resistance shutdown, overload protection, and manual emergency devices; In areas with strong winds and heavy rainfall, wind and rain sensors can be installed to automatically start and stop. Non branded motors are the "number one culprit" for sunshade failures. When selecting, confirm the motor brand and warranty period.

一句话总结： 遮阳棚质量看三样——篷布克重（≥650g/m?）、骨架防腐（镀锌+喷塑）、电机防水（IP65）。低配省的是眼前的钱，花的是后期的维修费。

Summary in one sentence: The quality of a sunshade depends on three factors: tarpaulin weight (≥ 650g/m?), skeleton anti-corrosion (galvanized+sprayed), and motor waterproofing (IP65). Low configuration saves immediate money, while spending on later maintenance costs.

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