The American Standards Association authorized the organization of pipe sizes way back in 1927. Ninety-one years ago there were only three wall thicknesses; STD, XS, and XXS. In 1939, realizing more thickness options were required, the schedule numbers we all recognize today were added. And in 1949 the thinner wall thickness schedules of 5 and 10 were introduced in response to the growing demand for stainless steel pipe. With all of these changes so long ago it is not hard to imagine why many of us scratch our heads when specifying and ordering pipe and pipe-related items.
Now for the good part!
PH Tool has created a simplified Nominal Pipe Size Chart for easy reference on your most complex projects. This chart details things such as:
Nominal pipe size
Schedule designations/wall thickness
Inch and Metric dimensions in easy-to-read color-coded text
1/8 to 48 inch NPS
Visit PHTool.com to download your free copy of this chart.