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供水DN900球墨鑄鐵管云南西雙版納

長處在(zai)(zai)(zai)中低壓管(guan)(guan)(guan)(guan)網(wang)，球(qiu)(qiu)墨鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)(guan)具(ju)有運行(xing)可靠，破損率低，施(shi)工(gong)(gong)維修利便、快捷，防(fang)腐機能優異(yi)等。缺(que)點在(zai)(zai)(zai)高(gao)壓管(guan)(guan)(guan)(guan)網(wang)，一般(ban)不(bu)(bu)使用(yong)(yong)，抗壓力(li)低。因(yin)為管(guan)(guan)(guan)(guan)體(ti)相對粗笨，安(an)裝時(shi)必需(xu)動用(yong)(yong)機械。我國(guo)的西雙(shuang)版納(na)球(qiu)(qiu)墨鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)(guan)年產球(qiu)(qiu)墨鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)(guan)150萬噸，配套(tao)管(guan)(guan)(guan)(guan)件5萬噸，產品曾成功(gong)應(ying)(ying)用(yong)(yong)于(yu)太原引黃(huang)工(gong)(gong)程(cheng)(cheng)、蘭州(zhou)引黃(huang)工(gong)(gong)程(cheng)(cheng)、南京市江寧供水(shui)(shui)工(gong)(gong)程(cheng)(cheng)、西安(an)城(cheng)市水(shui)(shui)環(huan)境管(guan)(guan)(guan)(guan)理二期工(gong)(gong)程(cheng)(cheng)、寶雞城(cheng)市應(ying)(ying)急供水(shui)(shui)工(gong)(gong)程(cheng)(cheng)等和地(di)(di)方重點工(gong)(gong)程(cheng)(cheng)建設(she)(she)，以過硬的質量、良好的服務(wu)贏得用(yong)(yong)戶的普遍認可，是目前(qian)(qian)海(hai)內公認的行(xing)業龍頭企(qi)業。 西雙(shuang)版納(na)球(qiu)(qiu)墨鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)(guan) 1．溝槽開(kai)挖(wa) 　溝槽底寬(kuan)應(ying)(ying)按下(xia)式(shi)計(ji)(ji)：B=D1+2(b1+b2) 　式(shi)中：B—管(guan)(guan)(guan)(guan)道(dao)(dao)溝槽底部(bu)的開(kai)挖(wa)寬(kuan)度(mm) D1—管(guan)(guan)(guan)(guan)道(dao)(dao)結(jie)構(gou)的外緣寬(kuan)度(mm) b1—管(guan)(guan)(guan)(guan)道(dao)(dao)一側的工(gong)(gong)作面寬(kuan)度(mm) b2—管(guan)(guan)(guan)(guan)道(dao)(dao)一側的支(zhi)撐寬(kuan)度(mm) 　2．2溝槽支(zhi)撐 根據溝槽土(tu)質、地(di)(di)下(xia)水(shui)(shui)、開(kai)槽斷(duan)面、荷載前(qian)(qian)提等因(yin)素(su)(su)進行(xing)設(she)(she)計(ji)(ji)，要求(qiu)牢固可靠，防(fang)止塌方、支(zhi)撐不(bu)(bu)得妨礙(ai)下(xia)管(guan)(guan)(guan)(guan)和穩管(guan)(guan)(guan)(guan)。3． T型接(jie)口管(guan)(guan)(guan)(guan)道(dao)(dao)在(zai)(zai)(zai)垂直或水(shui)(shui)平(ping)方向(xiang)轉彎處應(ying)(ying)設(she)(she)支(zhi)墩。應(ying)(ying)根據管(guan)(guan)(guan)(guan)徑、轉角、工(gong)(gong)作壓力(li)等因(yin)素(su)(su)經計(ji)(ji)算確(que)定支(zhi)墩尺寸4．輸送糊(hu)口飲用(yong)(yong)水(shui)(shui)時(shi)，管(guan)(guan)(guan)(guan)道(dao)(dao)不(bu)(bu)應(ying)(ying)穿過毒(du)物(wu)污染區，如必需(xu)穿過期應(ying)(ying)采取防(fang)護措施(shi)。5．凡承插連(lian)接(jie)的西雙(shuang)版納(na)球(qiu)(qiu)墨鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)(guan)線(xian)，必需(xu)經計(ji)(ji)算設(she)(she)支(zhi)墩，參見(jian)建筑標 準設(she)(she)計(ji)(ji)圖集03SS505《柔性接(jie)口給水(shui)(shui)管(guan)(guan)(guan)(guan)道(dao)(dao)支(zhi)墩》。6．球(qiu)(qiu)墨鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)(guan)的外防(fang)侵蝕涂(tu)層(ceng)應(ying)(ying)根據敷管(guan)(guan)(guan)(guan)地(di)(di)的土(tu)質情況來選擇鍍鋅(xin)和環(huan)氧瀝青涂(tu)層(ceng)或更高(gao)要求(qiu)的涂(tu)層(ceng)。7． 管(guan)(guan)(guan)(guan)道(dao)(dao)安(an)裝完、試壓合格后，宜用(yong)(yong)低氯離(li)子水(shui)(shui)沖(chong)刷和0.03%高(gao)錳酸(suan)鉀水(shui)(shui)溶液消毒(du)。