A method for producing a concrete pipe, which comprises a basic body made of concrete and a plastic inner pipe and is intended for conducting a liquid, with said method comprising the steps of: - introducing a mould core into the plastic inner pipe, - introducing the plastic inner pipe into an outer mould, and - pouring concrete, particularly self-compacting concrete, into an intermediate space between the outer mould and the plastic inner pipe in order to form the basic body made of concrete, wherein the plastic inner pipe remains in the basic body made of concrete after the concrete has solidified and the mould core is removed after the concrete has at least partially solidified, and wherein the plastic inner pipe has an inner section and the mould core is adapted to the shape of the plastic inner pipe in such a way that an inner section of the mould core essentially has a cross section corresponding to the cross section of the inner section of the plastic inner pipe, characterized in that the plastic inner pipe is formed of a plastic film, which extends continuously from one end of the mould core to the other end of the mould core, and furthermore has, at both ends, respective widened sections (3a, 3b) with a larger cross section than the inner section, and in that the mould core furthermore is adapted to the shape of the plastic inner pipe in such a way that a first outer section of the mould core essentially has a cross section corresponding to the cross section of the first widened section at one end of the plastic inner pipe and a second outer section of the mould core essentially has a cross section corresponding to the cross section of the second widened section at the other end of the plastic inner pipe, wherein the mould core is formed of at least two parts and a first mould core part of the at least two-part mould core comprises the first outer section and a second mould core part of the at least two-part mould core comprises the second outer section. - introducing a mould core into the plastic inner pipe, - introducing the plastic inner pipe into an outer mould, and - pouring concrete, particularly self-compacting concrete, into an intermediate space between the outer mould and the plastic inner pipe in order to form the basic body made of concrete, wherein the plastic inner pipe remains in the basic body made of concrete after the concrete has solidified and the mould core is removed after the concrete has at least partially solidified, and wherein the plastic inner pipe has an inner section and the mould core is adapted to the shape of the plastic inner pipe in such a way that an inner section of the mould core essentially has a cross section corresponding to the cross section of the inner section of the plastic inner pipe, characterized in that the plastic inner pipe is formed of a plastic film, which extends continuously from one end of the mould core to the other end of the mould core, and furthermore has, at both ends, respective widened sections (3a, 3b) with a larger cross section than the inner section, and in that the mould core furthermore is adapted to the shape of the plastic inner pipe in such a way that a first outer section of the mould core essentially has a cross section corresponding to the cross section of the first widened section at one end of the plastic inner pipe and a second outer section of the mould core essentially has a cross section corresponding to the cross section of the second widened section at the other end of the plastic inner pipe, wherein the mould core is formed of at least two parts and a first mould core part of the at least two-part mould core comprises the first outer section and a second mould core part of the at least two-part mould core comprises the second outer section. wherein the plastic inner pipe remains in the basic body made of concrete after the concrete has solidified and the mould core is removed after the concrete has at least partially solidified, and wherein the plastic inner pipe has an inner section and the mould core is adapted to the shape of the plastic inner pipe in such a way that an inner section of the mould core essentially has a cross section corresponding to the cross section of the inner section of the plastic inner pipe, characterized in that the plastic inner pipe is formed of a plastic film, which extends continuously from one end of the mould core to the other end of the mould core, and furthermore has, at both ends, respective widened sections (3a, 3b) with a larger cross section than the inner section, and in that the mould core furthermore is adapted to the shape of the plastic inner pipe in such a way that a first outer section of the mould core essentially has a cross section corresponding to the cross section of the first widened section at one end of the plastic inner pipe and a second outer section of the mould core essentially has a cross section corresponding to the cross section of the second widened section at the other end of the plastic inner pipe, wherein the mould core is formed of at least two parts and a first mould core part of the at least two-part mould core comprises the first outer section and a second mould core part of the at least two-part mould core comprises the second outer section.