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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. 

隔熱保溫特性好，下道保溫隔熱材料(適用工業生產和工程建筑)的規格型號應合乎常用通風風管系統軟件的規定，值得一提的是，還應合乎通風風管的設計方案規定，保溫隔熱材料(適用工業生產和工程建筑)具備產品品質資格證書和別的達標文檔。

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.

濟南市通風管道銷售市場商品流通普遍的是熱鍍鋅通風管道。鍍鋅板通風管道，大部分是不銹鋼板通風管道的特性，但價錢相對性僅有共板法蘭風管的三分之二乃至更低。復合型通風管道一般是在自然環境較為普遍的自然環境中應用，對通風風管的規定不太高。

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.

保溫隔熱材料(用以工業生產和工程建筑)可合理維護管路在冬天免遭毀壞。通風管道銷售市場商品流通普遍的是熱鍍鋅通風管道。鍍鋅板通風管道，大部分是不銹鋼板通風管道的特性，但價錢相對性僅有共板法蘭風管的三分之二乃至更低。

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.

復合型通風管道一般是在自然環境較為普遍的自然環境中應用，對通風風管的規定不太高。在清潔通風風管層面，一般采用防火內肌硫化橡膠泡沫塑料保溫隔熱材料(運用于工業生產和工程建筑)，排煙風管則選用難燃鋁(鋁)箔防火巖棉板，這二種原材料比較普遍，隔熱保溫特性也不錯。

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.