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take the outside diameter and subtract the thickness twice.
NB (nominal bore) is the European designation equivalent to NPS is DN (diamètre nominal/nominal diameter/Durchmesser nach Norm), in which sizes are measured in millimeters. NB (nominal bore) is also frequently used interchangeably with NPS.You can refer more details herehttp://www.piping-engineering.com/nominal-pipe-size-nps-nominal-bore-nb-outside-diameter-od.html
nominal diameter is the original diameter of an object
The purpose with a pipe is the transport of a fluid like water, oil or similar, and the most import property is the capacity or the inside diameter. For a ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe the inside diameter - ID - of a NPS 2 inches pipe with * schedule 40 is 2.067" * schedule 80 is 1.939" The inside diameters are close to 2" and the nominal diameter related to the inside diameter. Outside diameter are 2.375" for both schedules. Since the outside diameter of a single nominal pipe size is kept constant the inside diameter of a pipe will depend on the "schedule" or the thickness of the pipe. The schedule and the actual thickness of a pipe varies with the size of the pipe. It is common to identify pipes in inches by using NPS or "Nominal Pipe Size". The metric equivalent is called DN or "diametre nominel". The metric designations conform to International Standards Organization (ISO) usage and apply to all plumbing, natural gas, heating oil, and miscellaneous piping used in buildings. The use of NPS does not conform to American Standard pipe designations where the term NPS means "National Pipe Thread Straight". Nominal Bore (NB) may be specified under British standards classifications along with schedule (wall thickness). The tolerances are looser to pipes compared with tubes and they are often less expensive to produce. The nominal dimensions of tubes are based on the outside diameter. If we look at Copper Tubes - ASTM B88 the outside diameter of a 2" pipe is 2.125", relatively close to 2". The inside diameter of a tube will depend on the thickness of the tube. The thickness is often specified as a gauge. If we look at Copper Tubes - ASTM B88 the wall thickness of 0.083"of a 2" pipe is gauge 14. The tolerances are higher with tubes compared to pipes and tubes are often more expensive to produce than pipes.
Tube is measured by outside diameter, pipe is measured by inside diameter.
take the outside diameter and subtract the thickness twice.
take the outside diameter and subtract the thickness twice.
take the outside diameter and subtract the thickness twice.
It could be 65" (b wall - 5.5" wall thickness), or 66.5" (c wall - 6.25" wall thickness).
30-inch (inside diameter) RCP has a wall thickness of 2.75 inches. Therefore, the outside diameter of 30-inch RCP is 35.5 inches.
That would depend on the wall thickness of the pipe. 54 inches is the outside diameter so subtract the pipe wall thickness (x2) adn you have the inside diameter.
Outer radius minus inner radius Subtract the inside diameter from the outside diameter, then divide the difference by 2.
-length-outside diameter of shaft-wall thickness
For example a tube (hollow cylinder)with wall thickness 't' the outside diameter is: 1.00+2t So if the walls are 1.0mm thick the outside diameter is 1.20cm If there is no wall thickness the inside and outside diameter are the same. This seems a little too simple a question to ask here so I suspect the person asking the question has omitted some details or that they want an answer to a different question.
It depends on the thickness of the material that the pipe is made from.
The pipe will have an outside diameter of 1.5+.25+.25 = 2". A pipe with an outside diameter of 2" has an outside circumference of 2"*Pi. 2"*3.142 ~= 6.284" or about 6 1/4"
1/2 inch + 2*thickness of the pipe.