The metric equivalent is called dn or diametre nominel.
Copper pipe sizes inches to mm pdf.
Nominal pipe size nps is the number that defines the size of the pipe.
To understand this concept you have to learn the way pipes are manufactured.
Energy units pressure units.
For example when you say 6 pipe the 6 is the nominal size of that pipe.
1 pa 0 102 kgf m m.
However for the pipe sizes nps 14 and above outside diameter is the same as nps.
1 pa 1 n m m.
1 kj 0 28 w h.
1 atm 0 101 mpa 1 013 bar.
1 j 0 24 cal.
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.
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.
1 cal 4 2 j.
What is nominal pipe size.
Nominal size carbon steel pipe od mm inch metric ks jis astm iso din metric inch other standard rule europe size 1 8 3 2 10 5 10 3 10 2 10 2.
In plumbing pipe size is referred to as nominal pipe size nps or nominal pipe size.
1 w 1 j s.
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.
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.