This device removes foreign substances from the pipe surface by washing the pipes with high-pressure water. It then dries the moisture with air before the intermediate frequency induced preheating stage.

- Pinch roll: 4 set

- Side guide roll: 1 set

- High-pressure pump and nozzle – 5 k ∼ 7 k(Hydrostatic pressure)
  : 1 set

- Air knife – 5 kg/cm2 (Compressed air): 2 set

- Water tank and heater(3 kw – 2 ea.): 1 set