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(yong)(yong)于液體(ti)、氣體(ti)的(de)輸(shu)送管網(wang)，化工(gong)管道(dao)保(bao)溫(wen)(wen)(wen)工(gong)程(cheng)(cheng)石油、化工(gong)、集中供熱(re)熱(re)網(wang)、空調通風管道(dao)、市(shi)政(zheng)工(gong)程(cheng)(cheng)等。高(gao)溫(wen)(wen)(wen)預(yu)制直(zhi)埋保(bao)溫(wen)(wen)(wen)管是(shi)一種(zhong)保(bao)溫(wen)(wen)(wen)性(xing)能(neng)(neng)好，加安全可(ke)靠(kao)，工(gong)程(cheng)(cheng)造價(jia)低的(de)直(zhi)埋預(yu)制保(bao)溫(wen)(wen)(wen)管。熱(re)力工(gong)程(cheng)(cheng)用(yong)(yong)聚氨(an)酯(zhi)保(bao)溫(wen)(wen)(wen)管制作環境(jing)溫(wen)(wen)(wen)度(du)控制在28度(du)左右，這(zhe)種(zhong)溫(wen)(wen)(wen)度(du)下生(sheng)產的(de)聚氨(an)酯(zhi)保(bao)溫(wen)(wen)(wen)鋼(gang)管聚氨(an)酯(zhi)泡沫閉(bi)孔率高(gao)，可(ke)達到98%以上，充分保(bao)證聚氨(an)酯(zhi)保(bao)溫(wen)(wen)(wen)鋼(gang)管的(de)保(bao)溫(wen)(wen)(wen)能(neng)(neng)力。

　　聚(ju)氨脂(zhi)保(bao)(bao)(bao)(bao)溫(wen)是(shi)一種性(xing)能高，導熱(re)(re)(re)系數低的(de)產品，其性(xing)能優(you)越廣泛應用于(yu)各種保(bao)(bao)(bao)(bao)溫(wen)工(gong)程，其發(fa)(fa)展歷程可見(jian)一斑(ban)，初在(zai)發(fa)(fa)達**，在(zai)上世紀70年(nian)代初期人(ren)(ren)們開始研究熱(re)(re)(re)損(sun)失減(jian)小的(de)方(fang)法，經過幾(ji)(ji)年(nian)奮斗(dou)終(zhong)于(yu)發(fa)(fa)明了(le)玻(bo)璃棉(mian)(mian)保(bao)(bao)(bao)(bao)溫(wen)，玻(bo)璃棉(mian)(mian)纏繞在(zai)鋼管(guan)(guan)外壁(bi)損(sun)失可減(jian)少(shao)40%-50%，大(da)大(da)提高了(le)供熱(re)(re)(re)效率，提高了(le)發(fa)(fa)熱(re)(re)(re)率，是(shi)保(bao)(bao)(bao)(bao)溫(wen)鋼管(guan)(guan)的(de)一大(da)進步(bu)，隨(sui)著(zhu)取暖戶(hu)增加，人(ren)(ren)們逐漸意識(shi)到(dao)，供暖末端實際(ji)利(li)用率，還(huan)不到(dao)出管(guan)(guan)熱(re)(re)(re)時5%,為此各專家學者紛紛提議(yi)(yi)，參議(yi)(yi)，進行第二次保(bao)(bao)(bao)(bao)溫(wen)改(gai)革，到(dao)了(le)90年(nian)代人(ren)(ren)們發(fa)(fa)現了(le)一種利(li)用率更高，質(zhi)量(liang)更輕，施工(gong)更方(fang)便的(de)保(bao)(bao)(bao)(bao)溫(wen)鋼管(guan)(guan)的(de)材(cai)料(liao)，就是(shi)今天我們國內(nei)還(huan)一直用的(de)聚(ju)氨脂(zhi)保(bao)(bao)(bao)(bao)溫(wen)鋼管(guan)(guan)，這種材(cai)料(liao)使(shi)(shi)用至今已有幾(ji)(ji)十(shi)年(nian)，在(zai)工(gong)業**如此成熟的(de)今天，此技術能充分使(shi)(shi)用這么多年(nian)，說明此材(cai)料(liao)可靠(kao)性(xing)強。