
埃美柯閥門介紹:
銅閥門即用(yong)銅鑄(zhu)造(zao)的閥門,屬(shu)于工(gong)業零件,在中國(guo)最(zui)早(zao)由浙(zhe)江寧波率先(xian)研制(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)造(zao)工(gong)藝(yi)。二(er)十(shi)世(shi)紀(ji)(ji)八(ba)十(shi)年代(dai)初,浙(zhe)江寧波率先(xian)研制(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)造(zao)工(gong)藝(yi),改變了國(guo)內長期(qi)使用(yong)鑄(zhu)鐵閥門的歷史。在制(zhi)(zhi)(zhi)造(zao)工(gong)藝(yi)上(shang)最(zui)初采用(yong)砂鑄(zhu)成(cheng)型工(gong)藝(yi),九十(shi)年代(dai)初改為鍛造(zao)工(gong)藝(yi)。發(fa)展到(dao)二(er)十(shi)一世(shi)紀(ji)(ji)初中國(guo)已經發(fa)展成(cheng)為世(shi)界銅閥門制(zhi)(zhi)(zhi)造(zao)中心
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