保溫鋼管聚氨脂預(yu)制直(zhi)埋發(fa)泡螺旋鋼管防腐

保(bao)溫(wen)鋼管（Heat preservation pipe）是經過保(bao)溫(wen)工藝加工處理(li)后，在(zai)不(bu)同工作(zuo)環(huan)境和外介質的(de)作(zuo)用下保(bao)證工作(zuo)鋼管內溫(wen)度與表(biao)面溫(wen)度符合或達到使用要(yao)求的(de)鋼制管道。

保(bao)溫(wen)管(guan)道廣泛用(yong)于液體(ti)、氣體(ti)的輸送管(guan)網， 化工(gong)(gong)管(guan)道保(bao)溫(wen)工(gong)(gong)程(cheng)石油、化工(gong)(gong)、集中(zhong)供熱熱網、中(zhong)央空調通風管(guan)道、市政工(gong)(gong)程(cheng)等。

保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)(guan)是影響節能(neng)的(de)重要因素，保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)(guan)的(de)研制與應(ying)用(yong)越來越受到世(shi)界各國(guo)(guo)的(de)普遍重視。20世(shi)紀70年(nian)(nian)代后(hou)，國(guo)(guo)外(wai)普遍重視保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)(guan)的(de)和(he)應(ying)用(yong)，力求(qiu)大幅度減少能(neng)源的(de)消耗(hao)量(liang)，從(cong)(cong)而減少環境污染(ran)和(he)溫(wen)(wen)(wen)(wen)室效應(ying)。國(guo)(guo)外(wai)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)工(gong)業(ye)已經(jing)有(you)很(hen)長的(de)歷史，而新型保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)材料(liao)也(ye)正在不(bu)斷地涌現。 1980年(nian)(nian)以(yi)前，我(wo)國(guo)(guo)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)(guan)的(de)發展十分緩慢，為(wei)(wei)數不(bu)多的(de)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)廠(chang)只能(neng)少量(liang)地下直埋保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)(guan)，但(dan)中(zhong)(zhong)國(guo)(guo)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)工(gong)業(ye)經(jing)過30多年(nian)(nian)的(de)努力，特別是經(jing)過近10年(nian)(nian)的(de)高速發展，不(bu)少產品從(cong)(cong)無到有(you)，從(cong)(cong)單一到多樣化，質(zhi)量(liang)從(cong)(cong)低到高，應(ying)用(yong)越來越普遍。聚(ju)氨(an)酯材料(liao)是國(guo)(guo)際上最常用(yong)的(de)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)材料(liao)。硬質(zhi)聚(ju)氨(an)酯具有(you)很(hen)多優異(yi)性能(neng)，在歐美(mei)廣泛(fan)用(yong)于保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)隔熱(re)領域(yu)。歐美(mei)等發達(da)的(de)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)材料(liao)中(zhong)(zhong)約有(you)49%為(wei)(wei)聚(ju)氨(an)酯材料(liao)，而在中(zhong)(zhong)國(guo)(guo)這一比例尚不(bu)足20%。因此(ci)，聚(ju)氨(an)酯材料(liao)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)鋼管(guan)(guan)在中(zhong)(zhong)國(guo)(guo)還有(you)很(hen)大的(de)發展空(kong)間(jian)。