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Ọkpụkpọ igwe anaghagba nchara ahaziri ahazi
Igwe anaghagba nchara na-agbanwe ígwè sooks na akwa akwa nwere ike iji ọtụtụ ebe na usoro dka mmiri, uzuoku, mmanụ ọkụ na gas, nwekwara ike-eji dka nchebe管maka电线，电缆，ngwa anya emep uta eri, akpaka ngwá mgbaàmà ahrhi, na ngwá ọrụ waya na cable nchebe管。， A na-eji eriri igwe anaghagba nchara nke obere caliber maka ngwa eletrnbnkinvenke na nchekwa sekit sensọ， nchekwa ihe nleba anya nke ma, nchekwa sekit ihe mmetng - ta mmepng - ta ihe。N'ihi na ọ nwere ezigbo mgbanwe mgbanwe, nguzogide腐蚀，oke okpomọkụ na-eguzogide, nkwgs - abrasion, na nkwgs - si ike。