Pipes & Piping Terminology

Which of the following is NOT a typical material used for process piping?

• Wood

• Iron

• PVC

• Steel

In the imperial system of measurement, Pipe is referred to by its Nominal Pipe Size (NPS) in millimeters.

• True

• False

Inner Diameter of a pipe = Outer Diameter + 2 Wall Thickness

• True

• False

Pipe may be chosen with a thicker wall then necessary to counteract corrosion and erosion by the conveyed fluid. This extra thickness to counteract corrosion is called Mill Allowance.

• True

• False

A random length of pipe is 20ft.

• True

• False

Which of the following is NOT a typical pipe end preparation?

• Threaded & Couple End

• Plain End

• Beveled End

• Trellis End

Since the inner diameter is fixed for a given pipe size, the outer diameter will vary depending on the wall thickness of the pipe.

• True

• False

For a NPS 10" sch 60 pipe, if the OD=10.75" and the WT= 0.5", the ID of the pipe is:

• 9.75"

• 11.75"

• 1"

• 10.25"

If for a NPS 1" sch 40 pipe the empty weight is 2 lb/ft, what is the empty weight of a double random length of this pipe?

• 40 lbs

• 80 lbs

• 20 lbs

• 2 lbs

For a NPS of 12" and higher, the NPS number = OD of the pipe.

• True

• False