Kupanga kwa FRP Pultrusion ndi njira yopitilira kupanga kuti ipange mbiri zama polima zolimba za utali uliwonse komanso gawo lokhazikika. Ulusi wolimbikitsira ukhoza kukhala wozungulira, mphasa wopitilira, woluka, kaboni kapena zina. Ulusiwo umayikidwa ndi polymer matrix (resin, mchere, pigment, zowonjezera) ndikudutsa pamalo opangira kale omwe amapanga stratification yofunikira kuti apatse mbiriyo zomwe mukufuna. Pambuyo popanga kale, ulusi wopangidwa ndi utomoni umakokedwa kudzera mumoto wotenthedwa kuti utomoni usungunuke.