Application‑based market taxonomy for Pipe Crawler Robots separates the market into Inspection, Cleaning, Maintenance, and Repair uses. Inspection robots, equipped with high‑resolution cameras and ultrasonic sensors, dominate the landscape, reflecting a 40% share of total sales as utilities and petrochemical firms prioritize non‑intrusive integrity assessments. Cleaning applications, which employ abrasive brushes or water jets, hold a 30% slice, driven by municipal water authorities seeking automated pipe hygiene solutions. Maintenance robots, designed for periodic tasks such as valve actuation and corrosion monitoring, account for 20% of the market, benefiting from scheduled service contracts that ensure recurring revenue. Repair robots, featuring modular toolkits for localized patching or component replacement, occupy the smallest yet growing 10% segment, as aging infrastructure pushes operators toward in‑situ remediation. This application segmentation directly informs revenue forecasts, as each use‑case exhibits unique demand cycles, regulatory drivers, and technology investment patterns.