Reinforced thermoplastic based welded jointing system and method for thermoset composite pipe joints

A system for coupling pipes comprising:

• a first pipe having a tapered, spigot end, wherein a portion of an external surface of the tapered, spigot end of the first pipe is bonded to a first glass fiber reinforced thermoplastic material;
• and
• a second pipe having a tapered, socket end adapted to internally receive the tapered, spigot end of the first pipe, wherein a portion of an internal surface of the tapered, socket end of the second pipe is bonded to a second glass fiber reinforced thermoplastic material;
• wherein the first pipe and the second pipe are made from a reinforced thermosetting resin (RTR) material,
• wherein, when the first pipe is internally received by the second pipe, the portion of the external surface of the tapered, spigot end of the first pipe is positioned to align with the portion of the internal surface of the tapered, socket end of the second pipe, thereby forming a sealing area, and
• wherein, upon application of a thermal joining process to the first glass fiber reinforced thermoplastic material and the second glass fiber reinforced thermoplastic material, an amount of heat of the thermal joining process is sufficient to melt the first glass fiber reinforced thermoplastic material and the second glass fiber reinforced thermoplastic material such that, when the heat is removed, a hardened thermoplastic material seals the first pipe to the second pipe.