to manufacturing station 25 by restraints 13 once the conduit reaches the manufacturing station injection molding machine 14 forms the fitting 15 over the conduit in the preferred embodiment the fitting 15 is molded from the same plastic material as used in fabrication of the conduit 12 as a result the fittings are integrally joined to and fully sealed with the conduit since during the molding operation at least a portion of the conduit sidewall becomes molten and fully cures with the injected plastic forming the fitting fitting 15 includes a body 26 and top 27 with an aperture 28 next the molded fitting reaches the area of the manufacturing station where the piercing tool 16 which is preferably a heated metal pin then forms an aperture in the sidewall of conduit 12 as the conduit exits the manufacturing station 25 it passes off the support device 39 s second or far end since the support device is prevented from moving with the conduit by restraints 13 the manufacturing cycle is repeated at periodic intervals as conduit 12 passes through manufacturing station 25 as a result conduit 12 is molded with a plurality of fittings 15 during this process support device 17 remains in conduit 12 at the manufacturing station 25 and provides internal structural support the resulting prefabricated conduit assembly may be of a length ranging from just several inches to as much as fifty to several hundred feet and may be wound on a reel for ease of shipment and handling as shown in fig5 the molded fitting comprises a top 27 and an aperture 28 aperture 28 generally serves to provide access to conduit 12 likewise top 27 generally serves as an insert for the connection of conduit.