TBM back‑up supporting systems include material trolleys, belt conveyors and power cabinets, which operate inside tunnels all‑year‑round. Underground slurry splashing, mineral dust and high‑humidity air cause fast abrasion and rust on steel surfaces. Ordinary paint wears away within short tunneling cycles, increasing on‑site maintenance workload.
FLDC three‑layer dedicated coating system for full set of TBM back‑up steel components:
- Modified epoxy zinc phosphate primer: Reliable anti‑rust for tunnel‑environment steel
- Abrasion‑resistant epoxy intermediate coat: Buffer slurry and gravel impact
- Aliphatic polyurethane topcoat: Resist damp tunnel atmosphere and mineral dust
Core Advantages:
✅ Resist underground slurry splashing and gravel particle abrasion
✅ Adapt long‑term high‑humidity confined tunnel environment
✅ Strong adhesion under continuous mechanical vibration
✅ Reduce on‑site re‑painting frequency during tunneling construction
✅ Fast‑drying formula suitable for equipment prefabrication workshop
Our TBM backup equipment coating has been adopted by multiple metro construction contractors worldwide. Contact us for on‑site application guidance document.