Extrusion compositions comprising recycled polyamides recovered upon exploitation of off-shore or on-shore oil or gas deposits

An extrusion composition comprising, by weight:

• a) from 35% to 100% of at least one semicrystalline aliphatic polyamide PA1 comprising at least 30% of recycled semicrystalline aliphatic polyamide PA2 originating from used or end-of-life pipes which have been used in the exploitation of offshore or onshore oil or gas deposits, said recycled semicrystalline aliphatic polyamide PA2 having undergone a washing and/or compounding step after removal and shredding in the form of granules of said pipe;
• b) from 0 to 65% of at least one reinforcing fiber;
• c) from 0 to 40% of at least one impact modifier;
• d) from 0 to 30% of a filler;
• e) from 0 to 10% of at least one additive;
• the sum of the components a+b+c+d+e is equal to 100%,
• the inherent viscosity of said composition, as determined according to ISO 307:2007 in m-cresol at 20° C., being greater than or equal to 1.2 dl/g.