无机玻璃钢风管就是用于空气输送和分布的管道系统，风管可按截面形状和材质分类，按截面形状，风管可分为圆形风管，矩形风管，扁圆风管等多种，其中圆形风管阻力最小的高度尺寸最大，制作复杂，一般是以矩形风管为主。

Inorganic glass steel duct is used for air transportation and distribution pipeline system, the wind pipe can be classified according to the shape and material, according to the section shape, the wind pipe can be divided into circular duct, rectangular duct, a variety of flat air pipe, wherein the circular duct resistance minimum maximum height, complex production, is generally the main rectangular duct.