Tubing is normally small-diameter seamless pipes made of high-strength material like carbon steel, copper, stainless steel, titanium, Hastelloy, Monel, etc. They have higher flexibility compared to piping, therefore require less fitting. They can be bent to form angles and fit in the required space. They may be placed in bundles or supported on trays without need of special supporting systems. Table 2.4 gives guidance on the selection of tubing based on material, media, and temperature range.