Method and apparatus for producing glass fibre reinforced plastic pipes and the like wherein a rotatable hollow mould form is provided, an elongated roll of reinforcing fibres is located on holding means which are placed in the concavity of the mould, spaced from the sides of the mould, the mould is rotated and the fibre roll is unrolled onto the mould face to deposit fibres thereon and settable synthetic resinous material is introduced into the mould form. The holding means may be adapted to move the roll of reinforcing fibres from a position wherein it is spaced from the mould surface to a position wherein it is in contact therewith and the holding means may be rotatable with the leading edge of the roll secured until the roll has attained a suitable speed.