當多條電熱(re)帶鋪設(she)在管(guan)道上時，電熱(re)帶從(cong)管(guan)道的首端到(dao)尾(wei)端，然后回到(dao)起點，電熱(re)帶安裝在管(guan)道的315度、225度、135度或45度的角度位置(zhi)。

當電伴熱(re)系(xi)(xi)(xi)(xi)統(tong)(tong)螺(luo)旋(xuan)式盤繞(rao)時，依(yi)據盤繞(rao)指數(shu)，電伴熱(re)系(xi)(xi)(xi)(xi)統(tong)(tong)長(chang)短(duan)相當于管路(lu)長(chang)短(duan)乘于盤繞(rao)指數(shu)，將電伴熱(re)系(xi)(xi)(xi)(xi)統(tong)(tong)兩邊(bian)固定(ding)不動于必須長(chang)短(duan)的(de)管路(lu)上(shang)(shang)，隨后將松散的(de)電伴熱(re)系(xi)(xi)(xi)(xi)統(tong)(tong)盤繞(rao)在(zai)管路(lu)上(shang)(shang)，并多方面固定(ding)不動。

如(ru)果(guo)電(dian)(dian)伴(ban)帶不能(neng)放(fang)在管(guan)道下方，電(dian)(dian)伴(ban)帶應放(fang)在管(guan)道的兩側或上端，但纏繞系數應適當增加。放(fang)置(zhi)電(dian)(dian)伴(ban)熱(re)帶前，應測量(liang)每(mei)根電(dian)(dian)伴(ban)熱(re)線的電(dian)(dian)阻值。放(fang)置(zhi)完(wan)成后，應再次測量(liang)電(dian)(dian)阻值，以(yi)確保其正確。用鋁箔帶(重疊1cm)將電(dian)(dian)伴(ban)熱(re)帶和管(guan)道包緊(jin)(jin)，確保電(dian)(dian)伴(ban)熱(re)帶和管(guan)道表面保持緊(jin)(jin)密接觸。

在管道安(an)裝(zhuang)多條電(dian)伴(ban)(ban)熱帶的(de)時候(hou)，要(yao)保(bao)證電(dian)伴(ban)(ban)熱系(xi)(xi)統(tong)最(zui)小彎(wan)折(zhe)半經(jing)，電(dian)伴(ban)(ban)熱系(xi)(xi)統(tong)安(an)裝(zhuang)時最(zui)管道彎(wan)折(zhe)半經(jing)應(ying)當應(ying)不(bu)低于其(qi)薄(bo)厚的(de)5 倍；在管閘閥上安(an)裝(zhuang)電(dian)伴(ban)(ban)熱系(xi)(xi)統(tong)時，要(yao)盡可(ke)能的(de)方(fang)便(bian)以后的(de)管道電(dian)伴(ban)(ban)熱維(wei)修、維(wei)護保(bao)養。