What are the pipe sizes that correspond to the various standards?
The table on the following page lists, for illustration purposes, the differences between the salient dimensions for each of the previously-mentioned pipe standards. The range of sizes is limited to those that might typically be used for pasture pipelines. Note that the IPS standard has two methods for defining the reference dimension of the pipe; ID-based and OD-based. Also note that the thickness of the pipe wall, which will determine the inside diameter (or outside diameter for OD-based IPS pipe) will depend on the material comprising the pipe, and the internal pressure the pipe is capable of withstanding. PVC pipe is generally available primarily in OD-based IPS pipe sizes, although it is also available in CIOD sizes for larger-diameter pipes. Polyethylene pipe that is most commonly used for pasture pipeline applications is available as either ID-based or OD-based IPS sizes, or CTS sizes if referred to as “tubing”.
