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液體、氣體的(de)輸送管(guan)網，化(hua)工(gong)(gong)(gong)管(guan)道(dao)保(bao)溫(wen)(wen)(wen)(wen)工(gong)(gong)(gong)程(cheng)石油、化(hua)工(gong)(gong)(gong)、集中供熱(re)(re)熱(re)(re)網、空(kong)調通(tong)風管(guan)道(dao)、市政工(gong)(gong)(gong)程(cheng)等。高(gao)溫(wen)(wen)(wen)(wen)預制直(zhi)埋(mai)保(bao)溫(wen)(wen)(wen)(wen)管(guan)是一(yi)種(zhong)保(bao)溫(wen)(wen)(wen)(wen)性(xing)能好，加(jia)安全(quan)可靠，工(gong)(gong)(gong)程(cheng)造價(jia)低(di)的(de)直(zhi)埋(mai)預制保(bao)溫(wen)(wen)(wen)(wen)管(guan)。熱(re)(re)力工(gong)(gong)(gong)程(cheng)用聚氨酯(zhi)保(bao)溫(wen)(wen)(wen)(wen)管(guan)制作環境溫(wen)(wen)(wen)(wen)度控制在(zai)28度左右，這種(zhong)溫(wen)(wen)(wen)(wen)度下生產的(de)聚氨酯(zhi)保(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)聚氨酯(zhi)泡(pao)沫閉孔率高(gao)，可達到(dao)98%以上(shang)，充分(fen)保(bao)證(zheng)聚氨酯(zhi)保(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)的(de)保(bao)溫(wen)(wen)(wen)(wen)能力。

　　聚氨脂(zhi)保(bao)溫(wen)是(shi)一種(zhong)(zhong)性能(neng)高(gao)(gao)，導熱(re)(re)系數低的(de)產品，其性能(neng)優(you)越(yue)廣泛應用(yong)于各(ge)種(zhong)(zhong)保(bao)溫(wen)工程，其發(fa)展歷程可見(jian)一斑，初在發(fa)達**，在上世紀70年(nian)代初期人們(men)開始(shi)研究熱(re)(re)損失減小的(de)方(fang)法，經過幾(ji)年(nian)奮斗終于發(fa)明(ming)了(le)(le)玻(bo)璃棉(mian)保(bao)溫(wen)，玻(bo)璃棉(mian)纏(chan)繞在鋼(gang)(gang)管外壁損失可減少40%-50%，大大提(ti)高(gao)(gao)了(le)(le)供熱(re)(re)效率(lv)(lv)(lv)，提(ti)高(gao)(gao)了(le)(le)發(fa)熱(re)(re)率(lv)(lv)(lv)，是(shi)保(bao)溫(wen)鋼(gang)(gang)管的(de)一大進步(bu)，隨著取暖(nuan)戶增加，人們(men)逐漸意識到，供暖(nuan)末端(duan)實際利(li)(li)用(yong)率(lv)(lv)(lv)，還不到出管熱(re)(re)時5%,為(wei)此(ci)各(ge)專家學者紛紛提(ti)議，參(can)議，進行第二次(ci)保(bao)溫(wen)改革，到了(le)(le)90年(nian)代人們(men)發(fa)現了(le)(le)一種(zhong)(zhong)利(li)(li)用(yong)率(lv)(lv)(lv)更高(gao)(gao)，質量更輕，施工更方(fang)便的(de)保(bao)溫(wen)鋼(gang)(gang)管的(de)材(cai)料，就是(shi)今天我們(men)國內還一直(zhi)用(yong)的(de)聚氨脂(zhi)保(bao)溫(wen)鋼(gang)(gang)管，這(zhe)種(zhong)(zhong)材(cai)料使用(yong)至今已有幾(ji)十年(nian)，在工業**如(ru)此(ci)成熟的(de)今天，此(ci)技術(shu)能(neng)充分(fen)使用(yong)這(zhe)么多年(nian)，說明(ming)此(ci)材(cai)料可靠(kao)性強。