對于D型管(guan)(guan)穿(chuan)布管(guan)(guan)而言，另(ling)外(wai)的(de)(de)一(yi)個要(yao)求就(jiu)是(shi)要(yao)有非常高的(de)(de)阻燃(ran)性(xing)能。因為穿(chuan)線(xian)(xian)(xian)(xian)管(guan)(guan)是(shi)用(yong)來(lai)穿(chuan)電(dian)(dian)線(xian)(xian)(xian)(xian)的(de)(de)，如果不阻燃(ran)，可(ke)能會引發(fa)火(huo)(huo)災的(de)(de)情況。對于電(dian)(dian)線(xian)(xian)(xian)(xian)管(guan)(guan)的(de)(de)阻燃(ran)，我(wo)們可(ke)以使用(yong)點(dian)火(huo)(huo)試驗來(lai)進行檢查。例如我(wo)們要(yao)取一(yi)段電(dian)(dian)線(xian)(xian)(xian)(xian)管(guan)(guan)，然后用(yong)打(da)火(huo)(huo)機(ji)點(dian)燃(ran)，之后打(da)火(huo)(huo)機(ji)離開電(dian)(dian)線(xian)(xian)(xian)(xian)管(guan)(guan)，這時(shi)點(dian)燃(ran)的(de)(de)電(dian)(dian)線(xian)(xian)(xian)(xian)管(guan)(guan)會自(zi)動熄滅，也就(jiu)是(shi)體現出(chu)電(dian)(dian)線(xian)(xian)(xian)(xian)管(guan)(guan)的(de)(de)一(yi)個離火(huo)(huo)自(zi)熄的(de)(de)功(gong)能，這就(jiu)是(shi)屬于阻燃(ran)性(xing)能的(de)(de)電(dian)(dian)線(xian)(xian)(xian)(xian)管(guan)(guan)。另(ling)外(wai)還一(yi)種就(jiu)是(shi)根本就(jiu)點(dian)不著的(de)(de)電(dian)(dian)線(xian)(xian)(xian)(xian)管(guan)(guan)，都是(shi)符合要(yao)求的(de)(de)。