Pipe

Carbon Steel Pipe is manufactured and tested to ASTM specifications for use in mechanical and pressure applications but is also commonly used in structural applications.  Pipe is called out by a “nominal” inside diameter and a wall thickness (schedule 40, schedule 80, extra heavy, etc.)  The nominal size call-out references a fixed outside diameter while the exact inside diameter varies depending on the schedule of pipe.  Black pipe comes with a black lacquer coating and (along with uncoated pipe and galvanized pipe) is stocked in 21’ lengths.

ASTM A53 Grade A                        Tensile Strength (P.S.I) = 48,000                              Yield Point (P.S.I) = 30,000

ASTM A53 Grade B                         Tensile Strength (P.S.I) = 60,000                              Yield Point (P.S.I) = 35,000

Schedule 40 Black Pipe
(Stock Lengths – 21’)
Nominal Size
Outside Diameter
Wall Thickness
Inside Diameter
Weight per foot
per foot
Weight per 21′
1/8
0.405
0.068
0.269
0.245
5.14
1/4
0.540
0.088
0.364
0.425
8.92
3/8
0.675
0.091
0.493
0.568
11.92
1/2
0.840
0.109
0.622
0.851
17.87
3/4 *
1.050
0.113
0.824
1.131
23.75
1 *
1.315
0.133
1.049
1.679
35.26
1-1/4 *
1.660
0.140
1.380
2.273
47.73
1-1/2 *
1.900
0.145
1.610
2.718
57.08
2 *
2.375
0.154
2.067
3.653
76.71
2-1/2 *
2.875
0.203
2.469
5.793
121.65
33.500
0.216
3.068
7.576
159.10
3-1/2
4.000
0.226
3.548
9.109
191.29
44.500
0.237
4.026
10.790
226.59
55.563
0.258
5.047
14.620
307.02
66.625
0.280
6.065
18.970
398.37
88.625
0.322
7.981
28.550
599.55
1010.750
0.365
10.020
40.480
850.08
1212.750
0.406
11.938
53.530
1124.13

* Available in uncoated

Schedule 80 Black Pipe
(Stock Lengths – 21’)
Nominal Size
Outside Diameter
Wall Thickness
Inside Diameter
Weight per foot
per foot
Weight per 21′
1/4
0.540
0.119
0.302
0.535
11.24
3/8
0.675
0.126
0.423
0.739
15.51
1/2
0.840
0.147
0.546
1.088
22.85
3/4
1.050
0.154
0.742
1.474
30.95
11.315
0.179
0.957
2.172
45.61
1-1/4
1.660
0.191
1.278
2.997
62.94
1-1/2
1.900
0.200
1.500
3.631
76.25
22.375
0.218
1.939
5.022
105.46
2-1/2
2.875
0.276
2.323
7.661
160.88
33.500
0.300
2.900
10.250
215.25
3-1/2
4.000
0.318
3.364
12.500
262.50
44.500
0.337
3.826
14.980
314.58
55.563
0.375
4.813
20.780
436.38

66.625
0.432
5.761
28.500
598.50