Page 119 - 2010-2022 hose manufactureing ability and guide

TABLE 11-8
WROUGHT-IRON AND STEEL PIPE SIZES
All Dimensions in Inches

Standard Extra Strong ―
Standard and Extra Strong Pipe Schedule 40 Schedule 80

Nominal Actual Approx. Approx.
Pipe External Internal Internal
Diameter Diameter Diameter Diameter

1/8 0.405 0.27 0.21
1/4 0.540 0.36 0.29
3/8 0.675 0.49 0.42
1/2 0.840 0.62 0.54
3/4 1.050 0.82 0.74
1 1.315 1.05 0.95
1 1/4 1.660 1.38 1.27
1 1/2 1.900 1.61 1.49
2 2.375 2.07 1.93
2 1/2 2.875 2.47 2.32
3 3.500 3.07 2.89
3 1/2 4.000 3.55 3.36
4 4.500 4.03 3.82
5 5.563 5.05 4.81
6 6.625 6.07 5.75
8 8.625 7.98 7.63
10 10.750 10.02 9.75
12 12.750 12.00 11.75
14 O.D. 14.000 13.25 13.00
16 O.D. 16.000 15.25 15.00
18 O.D. 18.000 17.25 17.00
20 O.D. 20.000 19.25 19.00
22 O.D. 22.000 21.25 21.00
24 O.D. 24.000 23.25 23.00

Welded and Seamless Steel Pipe – ANSI B36.10

Wrought Steel and Wrought Iron Pipe – ANSI B36.10

Standard Pipe Dimensions shown are the same as Schedule 40 pipe through 10 inch. Above the size wall
thickness is uniformly 3/8”.

Extra Strong Pipe Dimensions shown are the same as Schedule 80 pipe up to 8 inch. For 8 inch and above wall
thickness is uniformly ½”.

Wrought Iron Pipe has slightly greater wall thickness (0.001 to 0.020) resulting in correspondingly smaller
internal diameter than tabulated above.

RMA/IP-2/2003 98