Application segmentation of the Anti-Corrosion Lining market delineates demand across five primary end‑use domains. Oil & Gas accounts for roughly 30% of total revenue, driven by the need to protect pipelines, offshore platforms, and refineries from aggressive H₂S and CO₂ environments. Power Generation contributes about 25%, where steam turbines, condensers, and boiler tubes require high‑temperature resistant linings to sustain efficiency and minimize downtime. The Marine sector represents 20% of the market, reflecting extensive use of anti‑corrosive coatings on ship hulls, cargo tanks, and port infrastructure to combat saline exposure. Chemical Processing holds 15%, supporting reactors, storage vessels, and piping that encounter corrosive acids and alkalis. Finally, Water & Wastewater comprises 10%, encompassing treatment plants and distribution networks where corrosion mitigation extends asset life. This application‑focused taxonomy clarifies how each vertical underpins the overall market size and informs strategic allocation of R&D and sales resources within the Anti‑Corrosion Lining segmentation framework.