A pipe spool is a pre-assembled section of piping that typically includes straight pipe, fittings, flanges, valves, and other components. Depending on where they are manufactured and how they are installed, the main types of pipe spools include prefabricated pipe spools, field fabricated spools, and modular piping spools. Each type offers different advantages in terms of fabrication, transportation, installation, cost, and project flexibility. This article will briefly introduce types of pipe spools.