1、通风管道加工的过程中应该尽量避免出现纵向接缝,但是绝对不能出现横向接缝。而且通风管道的咬口缝和四角的缝隙处,需要按照设计洁净等级要求,然后还要采用密封胶将其堵严。另外通风管道板材的连接缝的密封面应该设在通风管道壁的正压侧。1, the longitudinal joints should be avoided as far as possible during the processing of ventilation pipes, but there must be no transverse joints. Moreover, the seam of the ventilation pipe and the gap between the four corners should be designed according to the requirement of cleanliness level, and then sealant should be used. In addition, the sealing surface of the connection seam
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