沖(chong)(chong)孔封(feng)(feng)(feng)(feng)頭(tou)(tou)：由(you)一個或多個孔沖(chong)(chong)壓成(cheng)形的封(feng)(feng)(feng)(feng)頭(tou)(tou)。沖(chong)(chong)孔封(feng)(feng)(feng)(feng)頭(tou)(tou)也有橢圓形沖(chong)(chong)孔封(feng)(feng)(feng)(feng)頭(tou)(tou)、平底沖(chong)(chong)孔封(feng)(feng)(feng)(feng)頭(tou)(tou)、蝶形沖(chong)(chong)孔封(feng)(feng)(feng)(feng)頭(tou)(tou)、無直邊沖(chong)(chong)孔封(feng)(feng)(feng)(feng)頭(tou)(tou)等！

一般沖孔封頭多用(yong)于各種(zhong)設備過濾使用(yong)。而(er)孔的大小，距離均(jun)可按要求來(lai)定做。