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聚氨酯保溫鋼管(guan)廣泛用(yong)于(yu)液體、氣(qi)體的(de)(de)輸送管(guan)(guan)(guan)(guan)(guan)(guan)(guan)網(wang)， 化工管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)工程(cheng)石(shi)油(you)、化工、集中(zhong)(zhong)(zhong)供(gong)熱(re)(re)熱(re)(re)網(wang)、中(zhong)(zhong)(zhong)央空(kong)(kong)(kong)調通(tong)風管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)、市政工程(cheng)等(deng)。聚(ju)(ju)(ju)(ju)氨(an)(an)酯(zhi)直(zhi)(zhi)(zhi)埋(mai)(mai)保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)一種保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)性(xing)(xing)(xing)能(neng)(neng)好(hao)，加安全可(ke)靠，工程(cheng)造價(jia)低的(de)(de)直(zhi)(zhi)(zhi)埋(mai)(mai)預(yu)制保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。聚(ju)(ju)(ju)(ju)氨(an)(an)酯(zhi)直(zhi)(zhi)(zhi)埋(mai)(mai)保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)不(bu)僅具(ju)有(you)傳(chuan)統地(di)溝和(he)架空(kong)(kong)(kong)敷(fu)(fu)設(she)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)難以比擬的(de)(de)技(ji)(ji)(ji)術(shu)、實用(yong)性(xing)(xing)(xing)能(neng)(neng)，而且還具(ju)有(you)顯(xian)著的(de)(de)社會效(xiao)益和(he)經(jing)濟效(xiao)益，也(ye)是(shi)供(gong)熱(re)(re)節(jie)能(neng)(neng)的(de)(de)有(you)力措施。預(yu)制聚(ju)(ju)(ju)(ju)氨(an)(an)酯(zhi)直(zhi)(zhi)(zhi)埋(mai)(mai)保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)采用(yong)直(zhi)(zhi)(zhi)埋(mai)(mai)供(gong)熱(re)(re)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)技(ji)(ji)(ji)術(shu)，標志著中(zhong)(zhong)(zhong)國供(gong)熱(re)(re)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)技(ji)(ji)(ji)術(shu)發(fa)展已(yi)經(jing)進(jin)入了(le)新(xin)的(de)(de)起點(dian)。由于(yu)聚(ju)(ju)(ju)(ju)氨(an)(an)酯(zhi)硬(ying)質泡(pao)(pao)(pao)沫保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)層(ceng)緊密(mi)(mi)地(di)粘結在(zai)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)外皮(pi)，隔絕了(le)空(kong)(kong)(kong)氣(qi)和(he)水的(de)(de)滲入，能(neng)(neng)起到良(liang)好(hao)的(de)(de)防腐作(zuo)用(yong)。同時它的(de)(de)發(fa)泡(pao)(pao)(pao)孔都是(shi)閉合(he)的(de)(de)，吸水性(xing)(xing)(xing)很(hen)小。高(gao)密(mi)(mi)度聚(ju)(ju)(ju)(ju)乙烯(xi)外殼、玻璃鋼(gang)(gang)(gang)外殼均具(ju)有(you)良(liang)好(hao)的(de)(de)防腐、絕緣和(he)機(ji)械性(xing)(xing)(xing)能(neng)(neng)。因此，工作(zuo)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)外皮(pi)很(hen)難受到外界空(kong)(kong)(kong)氣(qi)和(he)水的(de)(de)侵(qin)蝕。只要管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)內部(bu)水質處理好(hao)，使(shi)用(yong)壽(shou)命(ming)可(ke)達50年(nian)以上，比傳(chuan)統的(de)(de)地(di)溝敷(fu)(fu)設(she)、架空(kong)(kong)(kong)敷(fu)(fu)設(she)使(shi)用(yong)壽(shou)命(ming)高(gao)3~4倍。    聚(ju)(ju)(ju)(ju)氨(an)(an)脂直(zhi)(zhi)(zhi)埋(mai)(mai)保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)又稱“管(guan)(guan)(guan)(guan)(guan)(guan)(guan)中(zhong)(zhong)(zhong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)”其有(you)“兩步法”構(gou)成(cheng)，是(shi)由高(gao)密(mi)(mi)度聚(ju)(ju)(ju)(ju)乙烯(xi)外保(bao)(bao)(bao)護層(ceng)、聚(ju)(ju)(ju)(ju)氨(an)(an)脂硬(ying)質泡(pao)(pao)(pao)沫塑管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)組(zu)成(cheng)。保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)層(ceng)材料為密(mi)(mi)度的(de)(de)硬(ying)質聚(ju)(ju)(ju)(ju)氨(an)(an)酯(zhi)泡(pao)(pao)(pao)沫，充(chong)分添滿鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)與套管(guan)(guan)(guan)(guan)(guan)(guan)(guan)之間的(de)(de)間隙(xi)，并具(ju)有(you)一定(ding)的(de)(de)粘接強(qiang)度，使(shi)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、外套管(guan)(guan)(guan)(guan)(guan)(guan)(guan)及保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)層(ceng)三者(zhe)之間形成(cheng)一個牢固的(de)(de)整體。 聚(ju)(ju)(ju)(ju)氨(an)(an)酯(zhi)直(zhi)(zhi)(zhi)埋(mai)(mai)保(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)泡(pao)(pao)(pao)沫具(ju)有(you)良(liang)好(hao)的(de)(de)機(ji)械性(xing)(xing)(xing)能(neng)(neng)和(he)絕熱(re)(re)性(xing)(xing)(xing)能(neng)(neng)，通(tong)常情況(kuang)下可(ke)耐溫(wen)(wen)(wen)(wen)120℃通(tong)過改性(xing)(xing)(xing)或與其它隔熱(re)(re)材料組(zu)合(he)可(ke)耐溫(wen)(wen)(wen)(wen)180℃。