管壳式换热器主要由壳体、（ ）、换热管、管箱、折流板、支座等零部件组成。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24911' and id < 2125227 and id<>'2125227' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24911' and id > 2125227 and id<>'2125227' order by id asc limit 5