通風(fēng)管道材料及尺寸的基本要求！

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一、通風(fēng)管道的材料

1、 Material of ventilation duct

1 金屬薄板：

1 sheet metal:

普通薄鋼板：有良好的加工性能和結(jié)構(gòu)強(qiáng)度，但易于生銹；

Ordinary thin steel plate: good processability and structural strength, but easy to rust;

鍍鋅薄鋼板：表面鍍鋅，有防銹作用，一般用來制作無酸霧作用的潮濕環(huán)境中；

Galvanized steel sheet: the surface of galvanized steel sheet is galvanized and has the function of rust prevention. It is generally used to make wet environment without acid mist effect;

鋁及鋁合金板：加工性能好，耐腐蝕，摩擦?xí)r不易產(chǎn)生火花，常用于有防爆要求的通風(fēng)系統(tǒng)中；

Aluminum and aluminum alloy plate: good processing performance, corrosion resistance, not easy to produce sparks during friction, commonly used in ventilation system with explosion-proof requirements;

不銹鋼板：具有耐銹耐酸能力，常用于制作寒濕、寒酸的排風(fēng)管道及化工環(huán)境中需耐腐蝕的通風(fēng)系統(tǒng)；

Stainless steel plate: it has the ability of corrosion resistance and acid resistance. It is often used to make cold, wet and sour exhaust pipes and the ventilation system that needs corrosion resistance in chemical environment;

塑料復(fù)合鋼板：在普通薄鋼板表面上噴上一層0.2-0.4mm厚的塑料層，常用于防塵要求較高的空調(diào)系統(tǒng)和-10度—70度溫度下耐腐蝕系統(tǒng)的風(fēng)管；

Plastic composite steel plate: spray a layer of 0.2-0.4mm thick plastic layer on the surface of ordinary thin steel plate, which is commonly used in air conditioning system with high dust-proof requirements and air duct of corrosion-resistant system at - 10-70 ℃;

2 非金屬材料：

2. Non metallic materials:

硬聚氯乙烯塑料板：適用于有酸性腐蝕作用的通風(fēng)系統(tǒng)，具有表面光滑、制作方便等優(yōu)點(diǎn)，但不耐高溫、不耐寒，只適用于0—60攝氏度的空氣環(huán)境，在太陽輻射作用下易脆裂；

Rigid polyvinyl chloride plastic plate: it is suitable for ventilation system with acid corrosion effect, with smooth surface and convenient production, but it is not resistant to high temperature and cold. It is only suitable for 0-60 ℃ air environment and easy to crack under the action of solar radiation;

玻璃鋼：具有輕質(zhì)、高強(qiáng)、不燃、耐腐蝕、耐高溫、抗冷融等特性。

FRP: with light, high strength, non combustible, corrosion resistance, high temperature resistance, cold melt resistance and other characteristics.

二、通風(fēng)管道尺寸的基本要求

2、 Basic requirements of ventilation duct size

通風(fēng)、空氣調(diào)節(jié)系統(tǒng)的風(fēng)管，宜采用圓形或長、短邊之比不大于4的矩形截面，其長、短邊之比不應(yīng)超過10。風(fēng)管的截面尺寸，宜按現(xiàn)行標(biāo)準(zhǔn)《通風(fēng)與空氣調(diào)節(jié)工程施工質(zhì)量驗收規(guī)范》(GB 50243)中的規(guī)定執(zhí)行，金屬風(fēng)管管徑應(yīng)為外徑或外邊長；非金屬風(fēng)管管徑應(yīng)為內(nèi)徑或內(nèi)邊長。

The air duct of ventilation and air conditioning system should be circular or rectangular section with the ratio of long and short sides no more than 4, and the maximum ratio of long and short sides should not exceed 10. The section size of air duct should be in accordance with the current standard "code for acceptance of construction quality of ventilation and air conditioning engineering" (GB 50243). The diameter of metal air duct should be the outer diameter or outer length; the diameter of non-metallic duct should be the inner diameter or inner side length.