Polyethylene Pipes & Fittings segmentation by application delineates the market into water‑supply, gas‑distribution, irrigation, industrial and sewerage systems. Water‑supply dominates because municipal networks demand long‑life, corrosion‑resistant conduits; it accounts for roughly one‑third of total revenue. Gas‑distribution follows, driven by the shift to natural‑gas pipelines that require high‑density PE (PE100) for pressure integrity, contributing about 20 % of the market. Irrigation, primarily in agriculture, leverages lightweight, flexible PE pipes for drip and sprinkler networks, representing ~15 % of sales. Industrial applications, encompassing chemical processing, refineries and cooling‑water loops, rely on specialized fittings and thicker‑wall pipes, adding another 15 %. Sewerage and wastewater conveyance, though regulated, uses PE for its chemical resistance and joint reliability, completing the remaining 15 %. Collectively these application categories define demand drivers, investment cycles, and regional adoption patterns that shape the overall market size.