Serving the Industrial, Marine and Construction Trades Since 1952

Standard Pipe Size Chart

SIZE

I.D.

O.D.
1/8 .269 .405
1/4 .364 .540
3/8 .493 .675
1/2 .622 .840
3/4 .824 1.050
1 1.049 1.315
1 1/4 1.380 1.660
1 1/2 1.610 1.900
2 2.067 2.375
2 1/2 2.469 2.875
3 3.068 3.500
3 1/2 3.548 4.000
4 4.026 4.500
5 5.047 5.563
6 6.065 6.625
8 7.981 8.625
10 10.020 10.750
12 12.000 12.750
14 13.250 14.000
16 15.250 16.000