對于(yu)(yu)D型管(guan)穿(chuan)布管(guan)而言，另(ling)外(wai)的(de)(de)一個(ge)要(yao)求就是(shi)要(yao)有非常高(gao)的(de)(de)阻(zu)燃性(xing)能。因為穿(chuan)線(xian)(xian)(xian)管(guan)是(shi)用來(lai)穿(chuan)電(dian)(dian)(dian)線(xian)(xian)(xian)的(de)(de)，如果(guo)不阻(zu)燃，可能會(hui)引(yin)發火(huo)災的(de)(de)情況。對于(yu)(yu)電(dian)(dian)(dian)線(xian)(xian)(xian)管(guan)的(de)(de)阻(zu)燃，我(wo)們可以使(shi)用點(dian)火(huo)試驗(yan)來(lai)進行檢查。例如我(wo)們要(yao)取一段電(dian)(dian)(dian)線(xian)(xian)(xian)管(guan)，然后用打火(huo)機(ji)(ji)點(dian)燃，之后打火(huo)機(ji)(ji)離開電(dian)(dian)(dian)線(xian)(xian)(xian)管(guan)，這(zhe)時點(dian)燃的(de)(de)電(dian)(dian)(dian)線(xian)(xian)(xian)管(guan)會(hui)自動熄滅，也就是(shi)體現出(chu)電(dian)(dian)(dian)線(xian)(xian)(xian)管(guan)的(de)(de)一個(ge)離火(huo)自熄的(de)(de)功能，這(zhe)就是(shi)屬于(yu)(yu)阻(zu)燃性(xing)能的(de)(de)電(dian)(dian)(dian)線(xian)(xian)(xian)管(guan)。另(ling)外(wai)還一種就是(shi)根本就點(dian)不著的(de)(de)電(dian)(dian)(dian)線(xian)(xian)(xian)管(guan)，都是(shi)符合要(yao)求的(de)(de)。