管帽（封頭）shiyalirongqishangdeduangai
，shiyalirongqideyigezhuyaochengyabujian。suoqidezuoyongshimifengzuoyong。yishizuochengleguanxingyalirongqideshangxiadi
，ershiguandaodaotoule
，buzhunbeizaixiangqianyanshenle，najiuyongyigefengtouzaibaguanziyonghanjiedexingshimifengzhu。hefengtoudezuoyongchabuduodedechanpinyoumangbanheguanmao，buguonaliangzhongchanpinshikeyichaixiede。erfengtouhanhaolezhihoushibukeyizaichaixiede。yuzhipeitaodeguanjianyouyalirongqi
、管道、法蘭盤、彎頭

、三通、四通等產品。封頭的品質直接關係到壓力容器的長期安全可靠運行。