A method for manufacturing a fibre-reinforced-plastic-containing ring-shaped or partly ring-shaped semifinished product or component from fibre-composite semifinished products, comprising the steps of: (a) positioning at least one ring-shaped or partly ring-shaped mould piece on a rotatable drum in such a manner that the latter comprises a reel-shaped mould with a ring-shaped or partly ring-shaped channel section (19, 33, 45, 50) that extends in an outward radial direction, and/or in a longitudinal direction, of the drum, (b) multilayer application of semifinished product material in the channel section (19, 33, 45, 50) of the reel-shaped mould, (c) at least one repetition of steps (a) and (b) with the addition of at least one ring-shaped or partly ring-shaped mould piece on the rotatable drum while forming a further channel section that continues on from the existing channel section, and placement of semi-finished-product material in the channel section, wherein the created sequence of channel sections at least in part provides the mould for the component to be manufactured, (d) placing matrix material in the channel sections (19, 33, 45, 50) with the insertion of semifinished-product material in individual channel sections or/and after forming at least one channel section, (e) after forming the channel sections (19, 33, 45, 50) with semifinished product material and matrix material contained therein, rotating the drum in such a manner that as a result of the centrifugal forces the matrix material is pressed towards the outside and air contained in the channel is displaced radially inwards, (f) curing the matrix material contained in the channel (19, 33, 45, 50) under the application of temperature, (g) after curing the ring-shaped semifinished product or component, separating the mould pieces into sections, and removing the cured ring-shaped semifinished product or component, characterized in that at least two mould pieces (12, 30) are designed in such a manner that they interact in a positive-locking manner so that the mould piece that is situated on the outside in radial direction of the drum is affixed in axial direction of the drum to the mould piece that is situated radially on the inside, and so that a sidewall, directed in the axial direction of the mould piece that is situated in the outside forms a sidewall of a channel section. (a) positioning at least one ring-shaped or partly ring-shaped mould piece on a rotatable drum in such a manner that the latter comprises a reel-shaped mould with a ring-shaped or partly ring-shaped channel section (19, 33, 45, 50) that extends in an outward radial direction, and/or in a longitudinal direction, of the drum, (b) multilayer application of semifinished product material in the channel section (19, 33, 45, 50) of the reel-shaped mould, (c) at least one repetition of steps (a) and (b) with the addition of at least one ring-shaped or partly ring-shaped mould piece on the rotatable drum while forming a further channel section that continues on from the existing channel section, and placement of semi-finished-product material in the channel section, wherein the created sequence of channel sections at least in part provides the mould for the component to be manufactured, (d) placing matrix material in the channel sections (19, 33, 45, 50) with the insertion of semifinished-product material in individual channel sections or/and after forming at least one channel section, (e) after forming the channel sections (19, 33, 45, 50) with semifinished product material and matrix material contained therein, rotating the drum in such a manner that as a result of the centrifugal forces the matrix material is pressed towards the outside and air contained in the channel is displaced radially inwards, (f) curing the matrix material contained in the channel (19, 33, 45, 50) under the application of temperature, (g) after curing the ring-shaped semifinished product or component, separating the mould pieces into sections, and removing the cured ring-shaped semifinished product or component, characterized in that at least two mould pieces (12, 30) are designed in such a manner that they interact in a positive-locking manner so that the mould piece that is situated on the outside in radial direction of the drum is affixed in axial direction of the drum to the mould piece that is situated radially on the inside, and so that a sidewall, directed in the axial direction of the mould piece that is situated in the outside forms a sidewall of a channel section.