Difference between Pipe and Tube

Main Difference

A pipe or a tube is often standardized when used to explain a long cylinder.  Though, there are tiny differences between the two, which can verify whether one is suitable to use over the other.  A pipe and a tube are equally void cylinders which are used to pass liquids and hold the little powder or solids.  Both are formed to be inflexible and stable contributions from a manufacturing point of view.  When pipes and tube are prepared, they are characteristically set around definite sets of diameters and measurements, as opposed to a pipe and tube which can be prepared with changeable size. The pipes are utilized to transport something, and tubes to build something; thus, tubes are characterized by the outside width and divider thickness (for development strength), and the pipes are measured by inside distance across to permit an estimation for transportation viz., speed, volumes and so forth. The pipes are the holders that are utilized to transport liquids, while tubes can suggest something auxiliary. This is vital as it can showed how the tube/pipe was made (welded creases or consistent) and the expected application. So you would utilize a pipe to transport water, yet utilize a tube to course electrical links. The sizes of the pipes are ordered utilizing the interior distance across, while tubes utilize the external breadth. This is not precisely a subjective tradition, it demonstrates the measurement which is imperative and normally ensured by the maker. The case, for pipes, the external width is by and large not ensured to be inner distance across + 2 x thickness. In the building application, utilizing a tube as an auxiliary component, the external measurement and thickness is more imperative as it decides the quality. Same goes for a pole. For pipes, in any case, one would be more intrigued by the limit and the weight, making the inside breadth and thickness imperative. A tube can have rectangular, square or a round cross-segment whereas a pipe is the roundabout cross segment as it were. A tube is promptly accessible in any length. A pipe is fabricated in general length of 6 meters (Single Random length). On unique demands, even 12-meter channel (Double irregular length) is fabricated. The tube is measured by outside width, but the pipe is measured by inside distance across. There is regularly disarray as to which measure bite the dust the client quite – Pipe Size or Tubing Size. Remember that pipe size alludes to an ostensible – not real – inside channel distance across. Plan alludes to the funnel’s divider thickness.


Pipes are categorized as tubular watercraft used in piping systems and pipeline, frequently transport fluids or gasses. They are specified by ‘Nominal Pipe Size’. Nominal pipe sizing stands for NPS.NPS average size is established by the American National Standards Institute. The developing of actual Pipe Sizes from one by eight” to twelve” is based on a uniform nominal outside diameter. Nominal outside diameter stands for (OD). NPS pipe has considered OD’s that correspond to the nominal size 14 to up. The reason a lot of people, including engineers, plumbers, others incorrectly consider NPS refers to the minor pipes for the reason that of how the average was actually describing. The average OD was formerly definite so that a pipe with an average OD and wall width and breadth typical of the period would have a pipe ID that was just about equal to the actual size of the pipe.


The process of tubing is generally used for structural purposes and the OD is a significant and accurate number. Tubing size is particular by OD and the wall thickness (WT); and the calculated OD and confirmed OD is usually within extremely close tolerances of each other. Tubing is frequently more costly than pipe because of costly manufacturing tolerances. Interestingly, while the acknowledged and calculated OD’s of tubing are approximately accurately most of the time, copper tubing usually has a calculated OD that is 1 by 8” bigger than declared OD. As such, it should be known as the copper pipe. But, aluminum, stainless steel, and steel tubing each and every one have calculated and stated OD’s that are precise or very close.

Key Differences

  • The tube is usually used for structural purposes sizing is based on precise outside diameter and wall breadth and width of the tubing. Other than the pipe is normally used to carry fluid or gasses sizing is founded on the little outside wall thickness
  • The tube can come in different shapes example, rectangular, square and cylindrical. The pipe is constantly cylindrical or in a circle shape.
  • The width and breadth of the tube are improved in average increments like (1mm or 2mm) pipe width and breadth based on the schedule, so there is no permanent increment.
  • Joining pipes are much labor demanding as it needs threading, welding or flanges. The tube can be fixed easily and quickly with flaring, couplings, brazing but for this cause, they don’t recommend the similar stability.

Video Explanation

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