鋼(gang)套(tao)鋼(gang)復合保溫(wen)(wen)(wen)(wen)鋼(gang)管(guan)(guan)是地下直埋(mai)管(guan)(guan)道(dao)中的(de)一(yi)種(zhong)，采(cai)用(yong)(yong)沒有混凝土(tu)結(jie)構的(de)情況下也可(ke)以(yi)進(jin)行(xing)地下直埋(mai)的(de)方式，即工(gong)作鋼(gang)管(guan)(guan)的(de)熱膨(peng)脹在外(wai)管(guan)(guan)內進(jin)行(xing)，從而(er)降低了(le)材料(liao)成本，縮短了(le)施工(gong)日(ri)(ri)期，并保障了(le)供(gong)熱管(guan)(guan)道(dao)的(de)安(an)(an)全(quan)(quan)(quan)性(xing)，可(ke)以(yi)在不同溫(wen)(wen)(wen)(wen)度(du)(du)環境下更(geng)安(an)(an)全(quan)(quan)(quan)的(de)廣(guang)泛應用(yong)(yong)，尤其(qi)適(shi)用(yong)(yong)于高溫(wen)(wen)(wen)(wen)蒸汽管(guan)(guan)道(dao)項目。使(shi)用(yong)(yong)溫(wen)(wen)(wen)(wen)度(du)(du)可(ke)達150℃-450℃。管(guan)(guan)道(dao)端口(kou)一(yi)般選用(yong)(yong)聚乙(yi)烯薄膜或三(san)層(ceng)(ceng)(ceng)PE冷纏帶(dai)密封，防(fang)(fang)止(zhi)安(an)(an)裝前或施工(gong)中進(jin)入潮氣(qi)或水(shui)。保溫(wen)(wen)(wen)(wen)材料(liao)多層(ceng)(ceng)(ceng)錯(cuo)縫包(bao)扎，有效減少(shao)了(le)熱損(sun)(sun)失(shi)，同時在外(wai)套(tao)表面采(cai)取控制(zhi)措施，防(fang)(fang)止(zhi)冷橋的(de)產生，從而(er)使(shi)外(wai)套(tao)防(fang)(fang)腐層(ceng)(ceng)(ceng)的(de)溫(wen)(wen)(wen)(wen)度(du)(du)控制(zhi)得到了(le)保證。用(yong)(yong)保溫(wen)(wen)(wen)(wen)材料(liao)包(bao)扎多層(ceng)(ceng)(ceng)鋁箔反射層(ceng)(ceng)(ceng)，有效減少(shao)了(le)熱損(sun)(sun)失(shi)，使(shi)蒸汽管(guan)(guan)道(dao)更(geng)加經濟合理(li)(li)。疏(shu)水(shui)系(xi)統采(cai)用(yong)(yong)全(quan)(quan)(quan)封閉的(de)形(xing)(xing)式，布置靈(ling)活，結(jie)構合理(li)(li)，安(an)(an)全(quan)(quan)(quan)可(ke)＊。鋼(gang)套(tao)管(guan)(guan)上的(de)排潮管(guan)(guan)既能及時排出潮濕氣(qi)體，又可(ke)作為(wei)日(ri)(ri)常(chang)運(yun)行(xing)的(de)報警(jing)信號管(guan)(guan)。管(guan)(guan)道(dao)的(de)熱補(bu)償采(cai)用(yong)(yong)優(you)質波紋管(guan)(guan)補(bu)償器，并將(jiang)其(qi)裝設(she)(she)在套(tao)管(guan)(guan)內，做成直埋(mai)形(xing)(xing)式，無須設(she)(she)置觀察井，施工(gong)操作方便、工(gong)期短。適(shi)用(yong)(yong)于輸(shu)送2.5MPa、350攝(she)氏度(du)(du)以(yi)下的(de)蒸汽或其(qi)它(ta)介質，該產品用(yong)(yong)鋼(gang)管(guan)(guan)做外(wai)防(fang)(fang)護層(ceng)(ceng)(ceng)，具有強度(du)(du)高，不易損(sun)(sun)壞，施工(gong)檢修(xiu)簡(jian)便，使(shi)用(yong)(yong)壽命長的(de)優(you)點。