Yellow Sleeve: flexible hose made of self-extinguishing PVC UL 94 V0, according to UNI-CIG 7129 D.M. 21.04.1993 and Law No. 108, with rigid spiral reinforcement resistant to impact and crush. Particularly weather-resistant, waterproof, good insulator for electrical wires and fire. Inner surface is completely smooth and facilitates the passage of gas pipelines.
Protection and insulation of gas pipes concealed underground.