Download Article

Download Commodity

Measuring pipe size tin can be a little confusing at first, simply anyone can learn how to do it. To notice the right size, first figure out if you need to mensurate the outside or inside diameter, then mensurate information technology with a ruler or record measure. Then you'll need convert the measurement to the "nominal" pipage size, or what that pipage will exist called in the store. Measuring pipe size is an important skill to take under your belt for your plumbing and building projects.

  1. one

    Make up one's mind if your pipe has "male" or "female" threads or no threads. Threads are the niggling grooves on the ends of some pipes that help them fit together. Male threads are on the outside of the pipage, whereas female threads are on the within.[i]

  2. ii

    Find the exterior bore if the pipe has male threads or no threads. The outside diameter is from outside border to outside edge across the pipe. To find it, measure out around the circumference of the pipage with flexible measuring tape. Divide the circumference by pi, or nearly three.14159.

    • For example, if the circumference is 12.57 inches (319 mm), you would divide past pi, and get an outside diameter of about 4 inches (100 mm).
    • Use string to measure if yous don't have measuring tape. Mark the bespeak on the string where it wraps around the circumference. And so remove the string, measure information technology against a ruler, and divide that length by pi.

    Advertisement

  3. 3

    Measure the inside bore if the pipage has female threads. That is the altitude beyond the centre of the piping, not including the thickness of the piping walls. Utilise a ruler or a caliper and measure at the end of the pipe, where in that location is a cross section.[two] [3]

    • Remember not to measure from the exterior edges, but rather from inside edge to inside border.

    Advertisement

  1. 1

    Catechumen your diameter to nominal size if its smaller than 14 inches (360 mm). If its 14 inches (360 mm) or more than, you don't need to catechumen information technology, because the diameter will equal the nominal diameter already.[four]

  2. 2

    Find out if you need to catechumen to NPS or DN. Convert to Nominal Pipe Size (NPS) if you are in North America, or Diameter Nominal (DN) if you are using the metric arrangement.

    • If yous are unsure, information technology could help to go to the website of a shop in your country that sells pipage. If they marking pipe with inches, and so you need the NPS system.

  3. 3

    Ad

Add together New Question

  • Question

    How exercise I know what size copper pipage I take?

    David Balkan

    David Balkan
    Professional person Plumber & CEO of Balkan Sewer & Water Main

    David Balkan is a Professional Plumber, CEO of Balkan Sewer and H2o Main Service, and President of Balkan Sewer and Bleed Cleaning. As a hands-on owner of these companies for over 40 years, David is knowledgeable about water service lines, sewers, and bleed line issues. David is a Committee Chairman of the Master Plumbers Quango and has sat on the Executive Commission of the Sub Surface Plumbers Clan of New York for over 30 years. His knowledge and solution-oriented approach contributed to Balkan Sewer and H2o Main Service existence the largest and nearly trusted service in New York City and the recipient of the 2022 Angie's Listing Super Service Award.

    David Balkan

    Professional Plumber & CEO of Balkan Sewer & Water Primary

    Expert Respond

    Measure the outer diameter of your pipe with a caliper. And so, cheque online for a pipe sizing chart. Compare the caliper measurement you lot collected with the sizing chart, and y'all'll know exactly which size you're working with.

  • Question

    What are standard pipage sizes?

    David Balkan

    David Balkan
    Professional person Plumber & CEO of Balkan Sewer & Water Main

    David Balkan is a Professional Plumber, CEO of Balkan Sewer and H2o Main Service, and President of Balkan Sewer and Bleed Cleaning. As a hands-on possessor of these companies for over 40 years, David is knowledgeable most water service lines, sewers, and bleed line issues. David is a Committee Chairman of the Master Plumbers Quango and has sat on the Executive Committee of the Sub Surface Plumbers Clan of New York for over 30 years. His knowledge and solution-oriented approach contributed to Balkan Sewer and H2o Main Service being the largest and nearly trusted service in New York Urban center and the recipient of the 2022 Angie's List Super Service Award.

    David Balkan

    Professional person Plumber & CEO of Balkan Sewer & Water Main

    Expert Answer

    It depends on the blazon of piping you're working with. Search online for a pipe sizing chart, which tin can point y'all in the right direction.

Enquire a Question

200 characters left

Include your electronic mail address to get a bulletin when this question is answered.

Submit

Advertizing

  • Tables can also help you discover out the "schedule" of your piping, which is related to the wall thickness.

  • If you lot accept tubing, instead of pipage, you don't demand to convert to nominal diameter. Tubing is named based on the outside diameter.

  • If yous have PEX, Cantankerous-Linked Polyethylene Tubing, the nominal diameter is equivalent to the internal diameter. [6]

Advertizing

References

About This Article

Thanks to all authors for creating a page that has been read 120,618 times.

Did this commodity help yous?