Process for manufacturing a tube or a vessel of composite material comprising the steps of: (a) winding a first tape of composite material on the outer surface of a cylindrical object under a winding angle with respect to the axial axis of the cylindrical object, in the longitudinal direction of the cylindrical object, and under the application of a laser beam to heat and adhere the first tape to the outer surface of the cylindrical object to form a first tape layer of parallel and adjacent windings of first tape on the cylindrical object; (b) winding a second tape of composite material on the first tape layer as formed in step (a) under a winding angle with respect to the axial axis of the cylindrical object, in the longitudinal direction of the cylindrical object, and under the application of a laser beam to heat and adhere the second tape to the first tape layer as formed in step (a) to form a second tape layer of parallel and adjacent windings of second tape on the cylindrical object; and wherein the second tape as applied in step (b) is wound on the first tape layer as formed in step (a) so as to overlap the edge interface between any two adjacent windings of first tape in the first tape layer as formed in step (a), thereby forming a fluid tight laminate on the first tape layer as formed in step (a); the winding pitch applied in step (a) is the same as the winding pitch applied in step (b); the winding direction in step (a) is the same as the winding direction in step (b); and the composite material comprises a matrix of a thermoplastic material and an oriented thermoplastic material which is incorporated into the matrix of the thermoplastic material. (a) winding a first tape of composite material on the outer surface of a cylindrical object under a winding angle with respect to the axial axis of the cylindrical object, in the longitudinal direction of the cylindrical object, and under the application of a laser beam to heat and adhere the first tape to the outer surface of the cylindrical object to form a first tape layer of parallel and adjacent windings of first tape on the cylindrical object; (b) winding a second tape of composite material on the first tape layer as formed in step (a) under a winding angle with respect to the axial axis of the cylindrical object, in the longitudinal direction of the cylindrical object, and under the application of a laser beam to heat and adhere the second tape to the first tape layer as formed in step (a) to form a second tape layer of parallel and adjacent windings of second tape on the cylindrical object; and wherein the second tape as applied in step (b) is wound on the first tape layer as formed in step (a) so as to overlap the edge interface between any two adjacent windings of first tape in the first tape layer as formed in step (a), thereby forming a fluid tight laminate on the first tape layer as formed in step (a); the winding pitch applied in step (a) is the same as the winding pitch applied in step (b); the winding direction in step (a) is the same as the winding direction in step (b); and the composite material comprises a matrix of a thermoplastic material and an oriented thermoplastic material which is incorporated into the matrix of the thermoplastic material. wherein the second tape as applied in step (b) is wound on the first tape layer as formed in step (a) so as to overlap the edge interface between any two adjacent windings of first tape in the first tape layer as formed in step (a), thereby forming a fluid tight laminate on the first tape layer as formed in step (a); the winding pitch applied in step (a) is the same as the winding pitch applied in step (b); the winding direction in step (a) is the same as the winding direction in step (b); and the composite material comprises a matrix of a thermoplastic material and an oriented thermoplastic material which is incorporated into the matrix of the thermoplastic material.