外观光滑，没有毛刺，安装方便，连接点少，通风阻力小，通风噪声小，强度与刚性均好，厚度均为可控，一般在0.4-1.2之间耐腐蚀性好，中性盐雾试验达240小时，可根据客户要求，专门设计、定做各种规格风管。

The appearance of smooth, no burr, convenient installation, less connecting points, small ventilation resistance and ventilation noise, strength and rigidity are good, the thickness is controllable, generally between 0.4-1.2 good corrosion resistance, salt spray tests up to 240 hours, according to customer requirements, special design, custom-made all kinds of air duct.