A method of manufacturing a flexible thermoplastic composite pipe, the method comprising the steps of: - applying a first layer of a reinforcing layer to a plastic pipe; - consolidating the first layer of the reinforcing layer with the plastic pipe, wherein at least the first layer of the reinforcing layer is brought to a first temperature (T 1) which leads to at least partial melting of the first layer of the reinforcing layer, so that the first layer of the reinforcing layer and the plastic pipe are firmly bonded to one another, in particular in the manner of a fusion bond; - applying a second layer of the reinforcing layer to the first layer of the reinforcing layer; - consolidating the second layer of the reinforcing layer with at least the first layer of the reinforcing layer, wherein at least the second layer of the reinforcing layer is brought to a second temperature (T 2), which leads to at least partial melting of the second layer of the reinforcing layer, so that the second layer of the reinforcing layer and the first layer of the reinforcing layer are firmly bonded to one another, in particular in the manner of a fusion bond; - applying at least one third layer of the reinforcing layer to the second layer of the reinforcing layer; - consolidating the at least one third layer of the reinforcing layer with at least the second layer of the reinforcing layer, wherein at least the third layer of the reinforcing layer is brought to a third temperature (T 3), which leads to at least partial melting of the third layer of the reinforcing layer, so that the third layer of the reinforcing layer and the second layer of the reinforcing layer are firmly bonded to one another, in particular in the manner of a fusion bond, characterized in that the third temperature (T 3) is greater than the first and/or second temperature (T 1, T 2). - applying a first layer of a reinforcing layer to a plastic pipe; - consolidating the first layer of the reinforcing layer with the plastic pipe, wherein at least the first layer of the reinforcing layer is brought to a first temperature (T 1) which leads to at least partial melting of the first layer of the reinforcing layer, so that the first layer of the reinforcing layer and the plastic pipe are firmly bonded to one another, in particular in the manner of a fusion bond; - applying a second layer of the reinforcing layer to the first layer of the reinforcing layer; - consolidating the second layer of the reinforcing layer with at least the first layer of the reinforcing layer, wherein at least the second layer of the reinforcing layer is brought to a second temperature (T 2), which leads to at least partial melting of the second layer of the reinforcing layer, so that the second layer of the reinforcing layer and the first layer of the reinforcing layer are firmly bonded to one another, in particular in the manner of a fusion bond; - applying at least one third layer of the reinforcing layer to the second layer of the reinforcing layer; - consolidating the at least one third layer of the reinforcing layer with at least the second layer of the reinforcing layer, wherein at least the third layer of the reinforcing layer is brought to a third temperature (T 3), which leads to at least partial melting of the third layer of the reinforcing layer, so that the third layer of the reinforcing layer and the second layer of the reinforcing layer are firmly bonded to one another, in particular in the manner of a fusion bond, characterized in that the third temperature (T 3) is greater than the first and/or second temperature (T 1, T 2).