Chromium molybdenum steel pipe is a kind of 4140 seamless tubing containing chromium and molybdenum. It has high strength and good impact toughness, has relatively good corrosion resistance, and low temperature impact toughness.
Titanium condenser tubes have strong resistance to pitting corrosion, especially under seawater flow velocities up to 20m/s. This is due to the presence on its surface of a thin and dense oxide film.