廣東專業生產耐火電線批發最(zui)近大(da)(da)家都會在(zai)(zai)裝(zhuang)(zhuang)修(xiu)上(shang)碰到一個難(nan)題，家用(yong)電(dian)線(xian)(xian)(xian)(xian)用(yong)銅線(xian)(xian)(xian)(xian)還(huan)是(shi)(shi)鋁(lv)線(xian)(xian)(xian)(xian)好？上(shang)海永進電(dian)纜集(ji)團(tuan)的(de)(de)(de)(de)小(xiao)編走訪了(le)公(gong)司里各部門的(de)(de)(de)(de)同事，大(da)(da)家各抒己見(jian)，最(zui)后了(le)解到在(zai)(zai)奉賢的(de)(de)(de)(de)農村化(hua)自建房中大(da)(da)多數都用(yong)到了(le)鋁(lv)線(xian)(xian)(xian)(xian)，而在(zai)(zai)城區的(de)(de)(de)(de)商品房中大(da)(da)多數都使(shi)(shi)用(yong)銅線(xian)(xian)(xian)(xian)。所以到底是(shi)(shi)銅線(xian)(xian)(xian)(xian)好那還(huan)是(shi)(shi)鋁(lv)線(xian)(xian)(xian)(xian)好？目前市面(mian)上(shang)的(de)(de)(de)(de)家用(yong)電(dian)線(xian)(xian)(xian)(xian)主要(yao)分為(wei)銅線(xian)(xian)(xian)(xian)和(he)鋁(lv)線(xian)(xian)(xian)(xian)兩(liang)種。很多裝(zhuang)(zhuang)修(xiu)小(xiao)白比較糾結，為(wei)了(le)家庭(ting)的(de)(de)(de)(de)用(yong)電(dian)安全，應該選擇哪(na)種更(geng)好呢？接下來由上(shang)海永進電(dian)纜集(ji)團(tuan)的(de)(de)(de)(de)小(xiao)編就給大(da)(da)家分析一下家用(yong)電(dian)線(xian)(xian)(xian)(xian)是(shi)(shi)用(yong)銅線(xian)(xian)(xian)(xian)好還(huan)是(shi)(shi)鋁(lv)線(xian)(xian)(xian)(xian)好？1、負(fu)載(zai)功率：銅線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)導電(dian)性能(neng)(neng)優于(yu)鋁(lv)線(xian)(xian)(xian)(xian)，相同截面(mian)積的(de)(de)(de)(de)銅線(xian)(xian)(xian)(xian)和(he)鋁(lv)線(xian)(xian)(xian)(xian)兩(liang)種電(dian)線(xian)(xian)(xian)(xian)，銅線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)負(fu)載(zai)功率要(yao)大(da)(da)于(yu)鋁(lv)線(xian)(xian)(xian)(xian)。2、機械(xie)性能(neng)(neng)：銅線(xian)(xian)(xian)(xian)經退火后柔韌性更(geng)好，彎(wan)曲方便，抗(kang)疲勞強，機械(xie)強度(du)要(yao)遠(yuan)優于(yu)鋁(lv)線(xian)(xian)(xian)(xian)。鋁(lv)線(xian)(xian)(xian)(xian)相對來說在(zai)(zai)彎(wan)曲時(shi)容易(yi)折斷。3、穩(wen)定(ding)性：鋁(lv)線(xian)(xian)(xian)(xian)非常(chang)容易(yi)氧化(hua)，從而使(shi)(shi)電(dian)阻(zu)變大(da)(da)，降(jiang)低電(dian)線(xian)(xian)(xian)(xian)負(fu)載(zai)，容易(yi)發生安全問題。但(dan)是(shi)(shi)銅芯具有(you)優良的(de)(de)(de)(de)抗(kang)氧化(hua)和(he)耐腐蝕性，穩(wen)定(ding)性更(geng)好。4、電(dian)阻(zu)率：銅線(xian)(xian)(xian)(xian)電(dian)阻(zu)率小(xiao)，大(da)(da)概在(zai)(zai)鋁(lv)線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)60%，電(dian)阻(zu)率越(yue)小(xiao)，電(dian)能(neng)(neng)損耗越(yue)低。5、壽(shou)命(ming)：銅線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)上(shang)述性能(neng)(neng)均優于(yu)鋁(lv)線(xian)(xian)(xian)(xian)，也使(shi)(shi)銅線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)使(shi)(shi)用(yong)場合(he)和(he)使(shi)(shi)用(yong)壽(shou)命(ming)遠(yuan)遠(yuan)高于(yu)鋁(lv)線(xian)(xian)(xian)(xian)。

廣東專業生產耐火電線電(dian)(dian)(dian)(dian)(dian)纜(lan)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)類型有(you)(you)以下幾個方面：開路故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)，這(zhe)(zhe)類故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)通常是指電(dian)(dian)(dian)(dian)(dian)纜(lan)與(yu)電(dian)(dian)(dian)(dian)(dian)纜(lan)間或(huo)電(dian)(dian)(dian)(dian)(dian)纜(lan)對(dui)地(di)的(de)(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)在(zai)(zai)規定(ding)值(zhi)范(fan)圍(wei)內，但(dan)(dan)實際工作(zuo)電(dian)(dian)(dian)(dian)(dian)壓無法向終端傳輸(shu)或(huo)雖然也有(you)(you)部分(fen)電(dian)(dian)(dian)(dian)(dian)壓傳輸(shu)到(dao)終端，但(dan)(dan)幾乎沒(mei)有(you)(you)負載能(neng)力，這(zhe)(zhe)些都屬于(yu)開路故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)，在(zai)(zai)實際生(sheng)產中，我們(men)見到(dao)的(de)(de)斷線故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)屬于(yu)一種特(te)殊的(de)(de)開路故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)。低(di)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)，當電(dian)(dian)(dian)(dian)(dian)纜(lan)與(yu)電(dian)(dian)(dian)(dian)(dian)纜(lan)間的(de)(de)絕(jue)(jue)緣有(you)(you)損壞現象或(huo)電(dian)(dian)(dian)(dian)(dian)纜(lan)對(dui)地(di)的(de)(de)絕(jue)(jue)緣有(you)(you)損壞現象時，電(dian)(dian)(dian)(dian)(dian)纜(lan)絕(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)必(bi)然會減小(xiao)，在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)纜(lan)絕(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)比十(shi)倍電(dian)(dian)(dian)(dian)(dian)纜(lan)特(te)性(xing)阻(zu)(zu)抗(kang)還要小(xiao)的(de)(de)情況下，我們(men)稱這(zhe)(zhe)種故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)為低(di)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)。在(zai)(zai)測(ce)量(liang)低(di)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)時，可用(yong)低(di)壓脈沖反(fan)射法。高(gao)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)，當電(dian)(dian)(dian)(dian)(dian)纜(lan)與(yu)電(dian)(dian)(dian)(dian)(dian)纜(lan)間或(huo)電(dian)(dian)(dian)(dian)(dian)纜(lan)對(dui)地(di)的(de)(de)絕(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)比正常值(zhi)低(di)很多(duo)，但(dan)(dan)比十(shi)倍電(dian)(dian)(dian)(dian)(dian)纜(lan)特(te)性(xing)阻(zu)(zu)抗(kang)大時，我們(men)把(ba)這(zhe)(zhe)種電(dian)(dian)(dian)(dian)(dian)纜(lan)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)稱作(zuo)高(gao)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)。對(dui)高(gao)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)的(de)(de)測(ce)量(liang)，不能(neng)使用(yong)低(di)壓脈沖反(fan)射法，按照高(gao)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)具體(ti)性(xing)質(zhi)的(de)(de)不同，又可把(ba)高(gao)阻(zu)(zu)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)(zhang)的(de)(de)性(xing)質(zhi)分(fen)為泄漏性(xing)與(yu)閃絡(luo)性(xing)兩(liang)種。

廣東上原材料價格不斷上漲，近幾年行業市場假冒偽劣、粗制濫造、偷工減料、以次充好現象屢禁不止，不僅埋下了巨大的安全隱患，也導致部分依法生產的企業及經銷商步履維艱。同時，外資企業一直稱霸高端市場，擁有的競爭優勢，給國內電線電纜企業造成了巨大的經營壓力。目前，中國線纜企業數量已突破一萬大關，且大部分是民營企業，市場競爭激烈可想而知。線纜產品良莠不齊，質量出現問題與企業自身有很大關系，因此，企業加大原輔材料采購質量控制力度，注重行業技術創新，提升產品質量。另外，亂象叢生的行業市場，不僅僅是耐火電線線(xian)(xian)纜企業(ye)(ye)(ye)自身(shen)原因造成的(de)，與的(de)政(zheng)治體制(zhi)(zhi)和(he)經濟發展政(zheng)策缺失也有著莫大的(de)關(guan)聯。線(xian)(xian)纜行(xing)業(ye)(ye)(ye)要(yao)(yao)想突破迎來新(xin)生，就需要(yao)(yao)政(zheng)府和(he)企業(ye)(ye)(ye)共(gong)同(tong)探(tan)討，制(zhi)(zhi)定(ding)統一的(de)產(chan)品(pin)標(biao)準(zhun)、規范質(zhi)量(liang)、統一價(jia)格，以改變(bian)低價(jia)中標(biao)、質(zhi)量(liang)薄弱的(de)市(shi)場(chang)現(xian)狀。行(xing)業(ye)(ye)(ye)專(zhuan)家建議，中國線(xian)(xian)纜企業(ye)(ye)(ye)不能一味地要(yao)(yao)追求量(liang)的(de)擴張，更要(yao)(yao)注重質(zhi)的(de)提(ti)高，加強在(zai)技術、資(zi)金、管理(li)(li)等方(fang)面的(de)合作交(jiao)流，引入先進技術和(he)管理(li)(li)理(li)(li)念(nian)，使(shi)企業(ye)(ye)(ye)實力得到快速(su)提(ti)升，增強國際競爭力。

具有購買力的電線電纜市場需求減少。由于全球市場經濟不景氣，我國耐火電線電線電纜(lan)(lan)市場也(ye)(ye)受(shou)到(dao)重(zhong)創，需求量(liang)一度下(xia)(xia)落(luo)。但是(shi)進入2018年，市場由于受(shou)到(dao)智網(wang)及寬帶工(gong)程建設有利(li)促進，目前正在逐步恢復當(dang)中，但對電纜(lan)(lan)行業(ye)(ye)(ye)的(de)(de)(de)利(li)潤緩解作用較為(wei)有限。原(yuan)材(cai)(cai)(cai)價(jia)(jia)格(ge)不穩定，嚴(yan)重(zhong)積壓電纜(lan)(lan)行業(ye)(ye)(ye)的(de)(de)(de)利(li)潤。電纜(lan)(lan)行業(ye)(ye)(ye)的(de)(de)(de)特點是(shi)料重(zhong)工(gong)輕利(li)薄，當(dang)原(yuan)材(cai)(cai)(cai)價(jia)(jia)格(ge)上(shang)漲(zhang)時，電纜(lan)(lan)企(qi)業(ye)(ye)(ye)購買原(yuan)材(cai)(cai)(cai)將(jiang)造(zao)(zao)成銀(yin)根(gen)吃緊，資金(jin)周轉緩慢。而(er)(er)當(dang)原(yuan)材(cai)(cai)(cai)價(jia)(jia)格(ge)下(xia)(xia)跌(die)，電纜(lan)(lan)企(qi)業(ye)(ye)(ye)又回(hui)因為(wei)來不及消化原(yuan)材(cai)(cai)(cai)，而(er)(er)造(zao)(zao)成出(chu)廠價(jia)(jia)急速(su)下(xia)(xia)跌(die)。兩者(zhe)間(jian)(jian)的(de)(de)(de)兩者(zhe)之間(jian)(jian)的(de)(de)(de)“剪(jian)刀(dao)差(cha)”與“時間(jian)(jian)差(cha)”嚴(yan)重(zhong)擠壓了電纜(lan)(lan)企(qi)業(ye)(ye)(ye)的(de)(de)(de)盈利(li)空間(jian)(jian)。目前行業(ye)(ye)(ye)普遍比(bi)較認可的(de)(de)(de)說法(fa)是(shi)，原(yuan)材(cai)(cai)(cai)價(jia)(jia)格(ge)原(yuan)材(cai)(cai)(cai)料價(jia)(jia)格(ge)每上(shang)漲(zhang)5%，電纜(lan)(lan)企(qi)業(ye)(ye)(ye)的(de)(de)(de)相(xiang)對利(li)潤則將(jiang)減(jian)少4%。銀(yin)行貸款利(li)息的(de)(de)(de)不斷增(zeng)加，同樣給電纜(lan)(lan)企(qi)業(ye)(ye)(ye)的(de)(de)(de)利(li)潤空間(jian)(jian)造(zao)(zao)成重(zhong)大(da)影響(xiang)。由于目前我國的(de)(de)(de)電纜(lan)(lan)企(qi)業(ye)(ye)(ye)基本都是(shi)民營企(qi)業(ye)(ye)(ye)，因此即使比(bi)較幸(xing)運能夠(gou)帶到(dao)款，但是(shi)利(li)率(lv)一般也(ye)(ye)要上(shang)浮40%左(zuo)后，何況有眾多企(qi)業(ye)(ye)(ye)根(gen)本就融不到(dao)資。融資難的(de)(de)(de)問題(ti)直接(jie)造(zao)(zao)成我國整個電纜(lan)(lan)行業(ye)(ye)(ye)的(de)(de)(de)資金(jin)回(hui)籠周期變(bian)慢，三(san)角債盛行。

據央視報道，截至4月4日，國家耐火電線電網在建的9條特高壓輸電通道已經全部復工，正在加速建設，全年建設項目投資規模將達到1811億元，將有效帶動上下游產業發展批發。復工(gong)(gong)的9條特高(gao)(gao)壓(ya)輸電(dian)通道(dao)包括：張北(bei)送雄安1000千伏(fu)(fu)(fu)特高(gao)(gao)壓(ya)工(gong)(gong)程(cheng)(cheng)、蒙西至晉中特高(gao)(gao)壓(ya)交流(liu)工(gong)(gong)程(cheng)(cheng)、青(qing)海送河南(nan)±800千伏(fu)(fu)(fu)特高(gao)(gao)壓(ya)工(gong)(gong)程(cheng)(cheng)、四(si)川雅中送江(jiang)西±800千伏(fu)(fu)(fu)特高(gao)(gao)壓(ya)工(gong)(gong)程(cheng)(cheng)、1000千伏(fu)(fu)(fu)特高(gao)(gao)壓(ya)交流(liu)工(gong)(gong)程(cheng)(cheng)東(dong)吳（蘇州）主變擴建(jian)工(gong)(gong)程(cheng)(cheng)、張北(bei)柔性(xing)直流(liu)工(gong)(gong)程(cheng)(cheng)等。據(ju)國(guo)家(jia)電(dian)網(wang)新聞發(fa)言人王延芳介紹(shao)，目前，國(guo)家(jia)電(dian)網(wang)全年特高(gao)(gao)壓(ya)建(jian)設項目明確(que)投資規模1811億(yi)元(yuan)(yuan)，這些重點項目，投資規模大，產(chan)業鏈(lian)長，帶動能力強(qiang)，將有效帶動上(shang)下游(you)產(chan)業發(fa)展，拉動社會投資3600億(yi)元(yuan)(yuan)，總體規模近(jin)5411億(yi)元(yuan)(yuan)。