對(dui)于(yu)D型管(guan)(guan)(guan)穿布管(guan)(guan)(guan)而言，另(ling)外的(de)一個(ge)要求就是要有非(fei)常(chang)高(gao)的(de)阻(zu)燃(ran)性(xing)能。因為穿線(xian)管(guan)(guan)(guan)是用(yong)來穿電(dian)(dian)(dian)線(xian)的(de)，如果不阻(zu)燃(ran)，可能會引發火(huo)災的(de)情況。對(dui)于(yu)電(dian)(dian)(dian)線(xian)管(guan)(guan)(guan)的(de)阻(zu)燃(ran)，我(wo)們可以(yi)使用(yong)點(dian)火(huo)試驗來進行檢查。例如我(wo)們要取一段電(dian)(dian)(dian)線(xian)管(guan)(guan)(guan)，然(ran)后(hou)用(yong)打火(huo)機點(dian)燃(ran)，之后(hou)打火(huo)機離開電(dian)(dian)(dian)線(xian)管(guan)(guan)(guan)，這(zhe)(zhe)時點(dian)燃(ran)的(de)電(dian)(dian)(dian)線(xian)管(guan)(guan)(guan)會自動熄滅，也(ye)就是體現出(chu)電(dian)(dian)(dian)線(xian)管(guan)(guan)(guan)的(de)一個(ge)離火(huo)自熄的(de)功能，這(zhe)(zhe)就是屬于(yu)阻(zu)燃(ran)性(xing)能的(de)電(dian)(dian)(dian)線(xian)管(guan)(guan)(guan)。另(ling)外還一種就是根本就點(dian)不著的(de)電(dian)(dian)(dian)線(xian)管(guan)(guan)(guan)，都是符合要求的(de)。