保溫無縫鋼管同時它的發泡孔都是閉合的，吸水性很小。高密度聚乙烯外殼、玻璃鋼外殼均具有良好的防腐、絕緣和機械性能。保溫無縫鋼管廣泛用于(yu)液體、氣體的(de)輸(shu)送管(guan)(guan)(guan)網(wang)，化(hua)工(gong)管(guan)(guan)(guan)道保(bao)溫(wen)(wen)(wen)工(gong)程(cheng)(cheng)石油、化(hua)工(gong)、集中供熱(re)熱(re)網(wang)、空調通(tong)風管(guan)(guan)(guan)道、市(shi)政工(gong)程(cheng)(cheng)等。高溫(wen)(wen)(wen)預制(zhi)直埋保(bao)溫(wen)(wen)(wen)管(guan)(guan)(guan)是(shi)一種(zhong)保(bao)溫(wen)(wen)(wen)性能好，加(jia)安全(quan)可靠，工(gong)程(cheng)(cheng)造價低的(de)直埋預制(zhi)保(bao)溫(wen)(wen)(wen)管(guan)(guan)(guan)。熱(re)力工(gong)程(cheng)(cheng)用聚氨酯(zhi)保(bao)溫(wen)(wen)(wen)管(guan)(guan)(guan)制(zhi)作環境(jing)溫(wen)(wen)(wen)度控制(zhi)在28度左(zuo)右，這種(zhong)溫(wen)(wen)(wen)度下(xia)生產的(de)聚氨酯(zhi)保(bao)溫(wen)(wen)(wen)鋼管(guan)(guan)(guan)聚氨酯(zhi)泡沫(mo)閉(bi)孔率高，可達到98%以上，充分保(bao)證聚氨酯(zhi)保(bao)溫(wen)(wen)(wen)鋼管(guan)(guan)(guan)的(de)保(bao)溫(wen)(wen)(wen)能力。

　　聚(ju)(ju)氨(an)脂(zhi)(zhi)保(bao)溫(wen)(wen)是(shi)一種(zhong)(zhong)性能高(gao)(gao)，導(dao)熱(re)(re)系(xi)數低的(de)產(chan)品(pin)，其性能優越廣泛(fan)應用于(yu)各種(zhong)(zhong)保(bao)溫(wen)(wen)工程，其發展歷程可見一斑，初(chu)在(zai)發達**，在(zai)上(shang)世紀70年(nian)(nian)代初(chu)期人(ren)們開始(shi)研究熱(re)(re)損失減(jian)小的(de)方法，經過(guo)幾(ji)年(nian)(nian)奮斗終(zhong)于(yu)發明(ming)(ming)了(le)(le)(le)(le)玻璃棉(mian)保(bao)溫(wen)(wen)，玻璃棉(mian)纏繞在(zai)鋼(gang)管(guan)外壁損失可減(jian)少(shao)40%-50%，大大提高(gao)(gao)了(le)(le)(le)(le)供熱(re)(re)效(xiao)率(lv)，提高(gao)(gao)了(le)(le)(le)(le)發熱(re)(re)率(lv)，是(shi)保(bao)溫(wen)(wen)鋼(gang)管(guan)的(de)一大進步，隨著取暖(nuan)戶(hu)增(zeng)加，人(ren)們逐漸意識到(dao)，供暖(nuan)末端實際利(li)用率(lv)，還(huan)(huan)不到(dao)出管(guan)熱(re)(re)時5%,為此各專家學者紛(fen)紛(fen)提議，參議，進行第二次(ci)保(bao)溫(wen)(wen)改革，到(dao)了(le)(le)(le)(le)90年(nian)(nian)代人(ren)們發現了(le)(le)(le)(le)一種(zhong)(zhong)利(li)用率(lv)更(geng)高(gao)(gao)，質量更(geng)輕，施工更(geng)方便的(de)保(bao)溫(wen)(wen)鋼(gang)管(guan)的(de)材料，就是(shi)今天我們國內還(huan)(huan)一直用的(de)聚(ju)(ju)氨(an)脂(zhi)(zhi)保(bao)溫(wen)(wen)鋼(gang)管(guan)，這種(zhong)(zhong)材料使(shi)用至今已有幾(ji)十(shi)年(nian)(nian)，在(zai)工業**如此成(cheng)熟的(de)今天，此技術能充(chong)分使(shi)用這么多年(nian)(nian)，說明(ming)(ming)此材料可靠性強。