There is no doubt that the ventilation duct will be affected in the natural environment with low temperature. How should the manufacturer solve this situation? In doing a good job of thermal insulation, the selection of thermal insulation materials (applicable to industrial production and construction industry), but the selection of thermal insulation materials (applicable to industrial production and construction industry) is also necessary. 

隔热保温特性好，下道保温隔热材料(适用工业生产和工程建筑)的规格型号应合乎常用通风风管系统软件的规定，值得一提的是，还应合乎通风风管的设计方案规定，保温隔热材料(适用工业生产和工程建筑)具备产品品质资格证书和别的达标文档。

With good thermal insulation characteristics, the specifications and models of the next thermal insulation material (applicable to industrial production and engineering buildings) shall comply with the provisions of common ventilation duct system software. It is worth mentioning that it shall also comply with the provisions of the design scheme of ventilation duct. The thermal insulation material (applicable to industrial production and engineering buildings) shall have product quality qualification certificate and other standard documents.

济南市通风管道销售市场商品流通普遍的是热镀锌通风管道。镀锌板通风管道，大部分是不锈钢板通风管道的特性，但价钱相对性仅有共板法兰风管的三分之二乃更低。复合型通风管道一般是在自然环境较为普遍的自然环境中应用，对通风风管的规定不太高。

Hot dip galvanized ventilation pipes are widely used in Jinan ventilation pipe sales market. Galvanized sheet air ducts are mostly stainless steel sheet air ducts, but the price relativity is only two-thirds or even lower than that of common plate flange air ducts. The compound ventilation duct is generally applied in the natural environment where the natural environment is more common, and the provisions on the ventilation duct are not too high.

保温隔热材料(用以工业生产和工程建筑)可合理维护管路在冬天免遭毁坏。通风管道销售市场商品流通普遍的是热镀锌通风管道。镀锌板通风管道，大部分是不锈钢板通风管道的特性，但价钱相对性仅有共板法兰风管的三分之二乃更低。

Thermal insulation materials (used for industrial production and engineering buildings) can reasonably maintain the pipeline from damage in winter. Hot dip galvanized ventilation pipes are widely used in the distribution of goods in the ventilation pipe sales market. Galvanized sheet air ducts are mostly stainless steel sheet air ducts, but the price relativity is only two-thirds or even lower than that of common plate flange air ducts.

复合型通风管道一般是在自然环境较为普遍的自然环境中应用，对通风风管的规定不太高。在清洁通风风管层面，一般采用防火内肌硫化橡胶泡沫塑料保温隔热材料(运用于工业生产和工程建筑)，排烟风管则选用难燃铝(铝)箔防火岩棉板，这二种原材料比较普遍，隔热保温特性也不错。

The compound ventilation duct is generally applied in the natural environment where the natural environment is more common, and the provisions on the ventilation duct are not too high. At the level of clean ventilating duct, fire insulation rubber foam plastic insulation materials are commonly used (used in industrial production and engineering buildings). The smoke exhaust duct adopts refractory aluminum (aluminum) foil fireproof rock wool board, these two kinds of raw materials are common, and the thermal insulation characteristics are good.