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根據搜索結果，通風管道法蘭的鉚釘間距有以下規定：

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、低壓和中壓系統風管法蘭的螺栓及鉚釘的間距應小于或等于150mm；高壓系統風管則應小于或等于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，風管法蘭的螺栓及鉚釘孔的間距不應大于80mm；當空氣潔凈度等級為N6級至N9級時，不應大于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.

鉚接應牢固，鉚釘間距宜為100mm～120mm，且數量不少于4個。

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

這些規定確保了通風管道法蘭連接的強度和密封性，根據不同的系統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

本文由山東通風管道為您提供，我們的網站http://www.euio.com.cn我們將以全心全意的熱情為您提供服務，歡迎您的訪問

This article is provided by Shandong Ventilation Duct for you on our website http://www.euio.com.cn We will provide you with wholehearted enthusiasm and welcome your visit