詳細(xì)介紹 型 號(hào)公稱流量(Nm3/min)接口尺寸ND D-0131.3G 1/2″ND D-0202G 1″ND D-0303G 1 1/2″ND D-0505ND D-0707.2ND D-12012G 2″ND D-15015G 2 1/2″ND D-18018DN80ND D-24024DN80ND D-30030DN80ND D-36036DN100ND D-45045DN100