Pipes are made of a wide variety of materials - like galvanized steel, black steel, copper, cast iron, concrete, and various plastics such as ABS, PVC, CPVC, polyethylene, polybutylene and more.Pipes are identified by 'nominal' or 'trade' names that are loosely related to the actual dimensions. For instance, a 2-inch galvanized steel pipe has an inside diameter of about 2 1/8 inches and an outside diameter of about 2 5/8 inches.In plumbing pipe size is referred to as nominal pipe size - 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'. ISO 6708 - Pipework components - Definition and selection of DN (nominal size)ISO 6708 defines the nominal size - DN - as an alphanumeric designation of size for reference purposes. It comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size in millimetres of the bore (ID) or outside diameter (OD) of the end connections.Outside diameters for metric and imperial standards are indicated in the table below.
Related Topics. Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more. Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagramsRelated Documents. Pipe sizes, inside and outside diameters, wall thickness, schedules, moment of inertia, transverse area, weight of pipe filled with water - U.S. We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.Some of our calculators and applications let you save application data to your local computer.
Available commercially, such as 5 inch (125 mm), however these are less common. For pipe sizes with a NB of 14 inch (DN 350 mm) and above, the nominal bore is the same as the pipe Outside Diameter (OD). Confusingly, for pipe sizes with a NB of 12 inch (DN 300 mm) and below, the nominal bore and outside diameter are different. THINK!- MARYLAND METRICS - The One-Stop Source for Metric & British Sized Fasteners, Wrenches, Cutting, & Measuring Tools, Metal Shapes, Oil Seals, O-Rings, Mechanical Power Transmission Equipment, Bearings, Hydraulic And Pneumatic Fittings & Tubing, Workholding Components, Plumbing Fittings, & Some Electrical & Electronic Components.
These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.Google use cookies for serving our ads and handling visitor statistics. Please read for more information about how you can control adserving and the information collected.AddThis use cookies for handling links to social media. Please read for more information.