The Pipe Schedule (SCH) Chart is a standardized reference system used to determine the wall thickness and internal dimensions of industrial piping. Tied directly to the Nominal Pipe Size (NPS), the schedule number indicates the pipe’s pressure-carrying capacity, where higher schedules signify thicker walls capable of handling more demanding environments. This chart is an essential tool for engineers and fabricators to ensure correct fluid flow, structural integrity, and safety compliance across piping systems.