? ? 發泡(pao)(pao)(pao)保溫(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)(dao)具有良好的(de)機械性(xing)能(neng)和絕熱性(xing)能(neng)，通常情況(kuang)下可以耐(nai)高溫(wen)(wen)(wen)120°C通過改(gai)性(xing)或與(yu)其(qi)它 隔熱材(cai)(cai)料(liao)組合(he)可耐(nai)高溫(wen)(wen)(wen)180℃，適用于各(ge)(ge)(ge)種(zhong)冷、熱水高低(di)溫(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)(dao)的(de)保溫(wen)(wen)(wen)工程(cheng)。發泡(pao)(pao)(pao)保溫(wen)(wen)(wen)鋼管(guan)(guan)(guan)(guan)也是直埋(mai)保溫(wen)(wen)(wen)管(guan)(guan)(guan)(guan)的(de)其(qi)中(zhong)一(yi)(yi)種(zhong)管(guan)(guan)(guan)(guan)道(dao)(dao)，自三十年(nian)代聚(ju)(ju)氨(an)酯(zhi)合(he)成(cheng)材(cai)(cai)料(liao)誕生以來，一(yi)(yi)直作為(wei)一(yi)(yi)種(zhong)優(you)良的(de)絕熱保溫(wen)(wen)(wen)材(cai)(cai)料(liao)而得到迅速(su)發展，其(qi)應用范圍(wei)也越來越廣泛，更(geng)由(you)于其(qi)施工簡便、節(jie)能(neng)防腐效果顯著(zhu)而被大量地用于各(ge)(ge)(ge)種(zhong)供熱、制冷、輸(shu)油、輸(shu)汽等(deng)各(ge)(ge)(ge)種(zhong)管(guan)(guan)(guan)(guan)道(dao)(dao)。根(gen)據輸(shu)送介質(zhi)要(yao)求可采用有縫鋼管(guan)(guan)(guan)(guan)、無縫鋼管(guan)(guan)(guan)(guan)、雙面埋(mai)弧(hu)螺旋焊接鋼管(guan)(guan)(guan)(guan)。大量地用于各(ge)(ge)(ge)種(zhong)供熱、制冷、輸(shu)油、輸(shu)汽等(deng)各(ge)(ge)(ge)種(zhong)管(guan)(guan)(guan)(guan)道(dao)(dao)。采用硬質(zhi)聚(ju)(ju)氨(an)酯(zhi)泡(pao)(pao)(pao)沫塑(su)料(liao)。發泡(pao)(pao)(pao)保溫(wen)(wen)(wen)保溫(wen)(wen)(wen)管(guan)(guan)(guan)(guan)又(you)稱“管(guan)(guan)(guan)(guan)中(zhong)管(guan)(guan)(guan)(guan)”其(qi)有“兩步法”構成(cheng)，是由(you)高密度(du)聚(ju)(ju)乙烯外(wai)保護(hu)層(ceng)、聚(ju)(ju)氨(an)酯(zhi)硬質(zhi)泡(pao)(pao)(pao)沫塑(su)保溫(wen)(wen)(wen)材(cai)(cai)料(liao)和鋼管(guan)(guan)(guan)(guan)組成(cheng)。保溫(wen)(wen)(wen)層(ceng)材(cai)(cai)料(liao)為(wei)密度(du)60kg/m3至80kg/m3的(de)硬質(zhi)聚(ju)(ju)氨(an)酯(zhi)泡(pao)(pao)(pao)沫，充分填滿鋼管(guan)(guan)(guan)(guan)與(yu)套(tao)(tao)管(guan)(guan)(guan)(guan)之間的(de)間隙，并具有一(yi)(yi)定的(de)粘結強度(du)，是鋼管(guan)(guan)(guan)(guan)、外(wai)套(tao)(tao)管(guan)(guan)(guan)(guan)及保溫(wen)(wen)(wen)層(ceng)三者(zhe)之間形成(cheng)一(yi)(yi)個牢固的(de)整體(ti)。