Name: Marine Heat Exchanger. Design: Shell and Tube. Shell Material: Carbon Steel. Tube Material: Aluminum Brass HA177-2. Tube Type: Bare Tube (without Rolling Fin Outside). Tube Sheet: Stationary or Movable. Duty: Medium Duty. Pressure: 1.0 MPa. Advantage: Resistant to Pollution, Ideal for Inboard Engine of Ships in the Water.