寶坻需牢記填料改集式密封的這些安裝要領
常用的(de)密(mi)(mi)(mi)封型(xing)式(shi)(shi)主(zhu)要(yao)有(you)填料(liao)密(mi)(mi)(mi)封、機械(xie)密(mi)(mi)(mi)封等,填料(liao)密(mi)(mi)(mi)封。填料(liao)改集式(shi)(shi)密(mi)(mi)(mi)封是(shi)一種較為原始的(de)接觸式(shi)(shi)密(mi)(mi)(mi)封,具(ju)有(you)結(jie)構簡單、成本低、更(geng)換(huan)簡便(bian)等優(you)點(dian),由(you)于(yu)這些優(you)點(dian),因而在石油工(gong)業...