Copper Pipe Sizes Inches To Mm Pdf

Metric rules of thumb 1 mm about 1 25 inch thickness of a dime 25 mm about 1 inch 1 25 4 mm 300 mm about 1 foot 12 304 8 mm 1 m roughly 10 sq.

Copper pipe sizes inches to mm pdf.

1 cal 4 2 j. In plumbing pipe size is referred to as nominal pipe size nps or nominal pipe size. 1 w 1 j s. 1 m 10 76 sq.

Nominal pipe size nps is the number that defines the size of the pipe. Energy units pressure units. However for the pipe sizes nps 14 and above outside diameter is the same as nps. For example a pipe with a 12 inch nb dn 300 mm has an od of 12 75 inches or 324 mm.

1 pa 1 n m m. 1 kj 0 28 w h. For example when you say 6 pipe the 6 is the nominal size of that pipe. Note that all whole number inch designations on the following chart convert to multiples of 25 mm except for 3 inch pipe which iso designates as 80 mm.

To understand this concept you have to learn the way pipes are manufactured. 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. Confusingly for pipe sizes with a nb of 12 inch dn 300 mm and below the nominal bore and outside diameter are different. 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.

The metric equivalent is called dn or diametre nominel. 1 j 0 24 cal. 1 atm 0 101 mpa 1 013 bar.