Intumescent Coating for Structural Steel segmentation by application reflects the functional demands placed on fire‑protective systems across construction sectors. Commercial buildings dominate the market, accounting for roughly 35 % of total demand, driven by stringent fire‑code compliance in high‑rise office towers and shopping complexes where large steel frameworks require reliable passive fire protection. Industrial facilities represent the second largest share (≈30 %), where heavy‑duty equipment and process‑area steel structures necessitate coatings that can withstand prolonged high‑temperature exposure and chemical aggressors. Infrastructure projects—bridges, tunnels, and railway stations—contribute about 20 % as public‑safety regulations mandate fire‑resistant steel components in critical transport corridors. Residential buildings account for roughly 10 %, reflecting growing adoption of fire‑safety standards in multi‑unit housing and mixed‑use developments. Finally, marine structures hold a modest 5 % share, limited by the niche application of steel decks and offshore platforms where corrosion resistance and fire performance must be balanced. Together, these application segments define the overall market size and growth trajectory for intumescent coatings on structural steel.