Tubular with screw thread

A method for providing a filament reinforced tubular with a screw thread,

• wherein the screw thread comprises threading, the threading having a threading base and a threading top, and a root groove between the threading, the root groove having a root base as a bottom, and
• wherein the filament reinforced tubular comprises a tubular body, the tubular body comprising multiple fibre mats encapsulated in a thermoset material,
• the method comprising:
• providing the tubular with a core member for the threading, the core member having multiple windings around the tubular body, such that the windings of the core member are separated by the root base, and wherein the core member extends, at least partially, radially outwards relative to the root base;
• winding one or more fibre mats around the core member and the root groove;
• winding a positioning wire into the root groove, thus pulling the one or more fibre mats between the windings of the core member and onto the root base;
• inserting the fibre mat covered end of the tubular into a mould, wherein the mould defines the final shape of the screw thread;
• injecting a thermoset cover material under pressure into a cavity between the end of the tubular and the mould, thus encapsulating the core member, the one or more fibre mats, and the positioning wire, and thus defining the shape of the screw thread;
• after a setting period, increasing pressure in the thermoset cover material to remove air bubbles from the mould;
• and
• removing the tubular from the mould.