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根據(jù)搜索結(jié)果，通風(fēng)管道法蘭的鉚釘間距有以下規(guī)定：

According to the search results, there are the following regulations for the rivet spacing of ventilation duct flanges:

對于一般情況，微、低壓和中壓系統(tǒng)風(fēng)管法蘭的螺栓及鉚釘?shù)拈g距應(yīng)小于或等于150mm；高壓系統(tǒng)風(fēng)管則應(yīng)小于或等于100mm。

For general situations, the spacing between bolts and rivets of air duct flanges for micro, low, and medium pressure systems should be less than or equal to 150mm; The air duct of the high-pressure system should be less than or equal to 100mm.

空氣潔凈度等級為N1級至N5級時，風(fēng)管法蘭的螺栓及鉚釘孔的間距不應(yīng)大于80mm；當(dāng)空氣潔凈度等級為N6級至N9級時，不應(yīng)大于120mm。

When the air cleanliness level is N1 to N5, the spacing between the bolt and rivet holes of the air duct flange should not exceed 80mm; When the air cleanliness level is N6 to N9, it should not exceed 120mm.

柔性管與法蘭組裝時，鉚釘間距為60～80mm。

When assembling flexible pipes with flanges, the distance between rivets should be 60-80mm.

鉚接應(yīng)牢固，鉚釘間距宜為100mm～120mm，且數(shù)量不少于4個。

Riveting should be firm, with a spacing of 100mm to 120mm between rivets, and the quantity should not be less than 4.

這些規(guī)定確保了通風(fēng)管道法蘭連接的強(qiáng)度和密封性，根據(jù)不同的系統(tǒng)壓力和空氣潔凈度等級，鉚釘間距有所不同

These regulations ensure the strength and sealing of ventilation duct flange connections, and the rivet spacing varies depending on the system pressure and air cleanliness level

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