PVC conduit fittings, various size, good insulation, good fireproofing Features:good insulation characteristic ... 25KV voltagegreat impact-resistance, can be buried in concrete, resist compression, impactgood fire-resistant: high oxygen value, good combustion-resistance, ... metal pipe, resistant to acids, alkali and oilbiotic resistance, PVC conduit pipe with no smell attracting rodent, will not suffer ...