The transportation industry—particularly railway and underground systems—demands components capable of withstanding constant vibration, heavy loads, weather exposure, and aggressive environmental conditions. Without proper protection, corrosion and wear can compromise safety, reliability, and service continuity.
At Chousa, we apply high-performance coatings that protect critical fastening systems against corrosion, abrasion, and mechanical stress. Our solutions help extend service life, reduce maintenance, and ensure long-term reliability in demanding transportation infrastructures.

Components We Service
- Bolts and fasteners for railway and underground systems
- Flanges used in structural and mechanical assemblies
- Washers for load distribution and vibration resistance
- Fastening systems exposed to dynamic loads and harsh environments

