（長沙東方工業(yè)泵廠Tel:       Fax:  QQ:475946464 ）選購DF12-50*3需要注意些什么？
一，性能參數(shù)。本廠提供的參數(shù)如下：
型號:DF12-50*3流量:7.5-12.5-15立方米/小時（m³/E）;揚
程:162-150-139米（m）;電機功率:18.5KW;轉速:2950轉/分
鐘（r/min）;電機型號:Y160L-2效率:37.8-45-45.9%;軸功率:8.8KW;必
需汽蝕余量:2-2-2.5米（m）,進口壓力不得超過0.6MPa.
請核對具體參數(shù)，確保能滿足使用要求；若欲選型號還不確定，請?zhí)峁┧枇髁�，揚程，電機功率，高差，管道長度，出水管道彎頭角度情況及個數(shù)，管道的材質等，以便能為您選出*經(jīng)濟適用的型號；
DF12-50*3;DF12-50*3;DF12-50*3二，DF12-50*3的材質。常溫范圍（0℃－－80℃）內，打清水或者PH值為中性的類似水的物質，使用鑄鐵材質；介質溫度在0℃－－80℃范圍內，固體顆粒含量不大于1.5%（粒度小于0.5毫米）及類似的其它污水，要求泵具備耐磨性能時，使用鑄鋼或者球墨鑄鐵材質；介質溫度在-20℃－－105℃范圍內，不含固體顆粒，有腐蝕性，略帶酸性或堿性的介質， PH值范圍在5-9之間，使用304不銹鋼材質；酸堿度比較大的介質，如4以下或10以上時，使用316 或316L；若處于海水環(huán)境，可考慮使用雙相鋼材質。您可以根據(jù)以上要求，選擇適合的材質。DF12-50*3;DF12-50*3;DF12-50*3三， 您可以從本廠享受的配套采購服務：除DF12-50*3的泵及底座外，本廠還可配套提供電機（包括普通電機，高壓電機及防爆電機），底閥，閘閥，止回閥，進出口法蘭，自耦減壓控制柜，變頻控制柜，變徑等。泵本身各種配件均廠價供應。 泵的密封形式有填料密封，機械密封和波紋管機封三種。一般情況下，使用填料密封；不允許泄漏或者輸送腐蝕性流體等特殊情況下，使用機械密封；高溫情況下，使用波紋管機封；DF12-50*3;DF12-50*3;DF12-50*3四，若需配套提供DF12-50*3的電機，請告知電壓，防爆電機請?zhí)峁┓雷o等級，絕緣等級；若無特殊要求，本廠將按普通電機防護等級IP23，防爆等級IP54，電壓380/660V的標準供貨）；五，五， 廠家情況。本廠原來長沙水泵廠分廠，自1987年起即從事D/DF/DM/MD/DY/DG型多級離心泵，R型熱水循環(huán)泵，S/SA/SH型中開泵，AY型油泵，冷凝泵,IS/IH泵的生產(chǎn)；擁有嚴格的品質管理體系，有動平衡機。1997年改制獨立。25年的專注和積累，鑄就了卓越的品質和良好的信譽。選擇老廠，后顧無憂！DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3;DF12-50*3;DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF12-50*3,DF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