Abstract: The present invention relates to a multilayer tube comprising, in its radial direction from the outside inwards: an outer layer (1) made of a polyamide, a tie layer (2) comprising, by weight: 1 to 50% of an impact modifier chosen from elastomers and very low density polyethylene, the said impact modifier being completely or partly functionalized, per 99 to 50% of at least one copolyamide 6/12 respectively, an optional EVOH layer (3), optionally a tie layer, an inner layer (4) made of PA 12, PA 6 or a PA 6-polyolefin compound with a PA 6 matrix and a dispersed polyolefin phase, the layers being successive and adhering to one another in their respective contact zones. The inner layer is the layer in contact with the fluid being transferred. According to one embodiment of the invention, the inner layer (4) contains an electrically conducting material, producing a surface resistivity of less than 106?.

Abstract: This antistatic polyamide composition, comprising at least one polyamide and a sufficient amount of carbon black to make it antistatic, is characterized by the fact that the carbon black is at least a carbon black that is selected from among those having a specific BET surface area, measured according to ASTM Standard D 3037-89, from 5 to 200 m2/g, and DBP absorption, measured according to ASTM Standard D 2414-90, from 50 to 300 ml/100 g.