LN-5Z (Ncr) Water Proof & Prevent Burning Type flexible metallic conduit has the same structure with LV-5.It has excellent fire-proof because of the Heat resistance flame retardant of PVC surface. It is applicable to the Power wires piping of higher fire-safety requirements and humidity indoors and outdoors. It is also used to be all kinds of brightly or darkly embedded and straight buried piping for bridges, tunnels, shipbuilding, power plant and the high-grade construction. Moreover, it also can replace the ground and slot wiring, etc.