ROUND TUBING
STEEL 4130

Alloy steel tubing made of chromium-molybden steel 4130. American standard SAE 4130 cond "N", specification MIL-T-6736-B.

Full length:  17-24 feet  (5-7 m)

 
Outer diameter

Wall thickness

Inside diameter

Weight

[inch]

[mm]

[inch]

[mm]

[inch]

[mm]

[kg/m]

3/16"  (.1875)

4.76

.028
.035

0.71
0.89

.131
.118

3.33
2.98

0.07
0.09

1/4"  (.250)

6.35

.028
.035
.049
.058
.065

0.71
0.89
1.24
1.47
1.65

.194
.180
.152
.134
.120

4.93
4.57
3.86
3.40
3.05

0.10
0.12
0.16
0.18
0.19

5/16"  (.3125)

7.94

.028
.035
.049
.058
.065
.083
.095

0.71
0.89
1.24
1.47
1.65
2.11
2.47

.256
.243
.215
.196
.182
.147
.123

6.50
6.17
5.46
4.98
4.62
3.73
3.12

0.13
0.15
0.21
0.24
0.26
0.29
0.33

3/8"  (.375)

9.53

.028
.035
.049
.058
.065
.083
.095
.120

0.71
0.89
1.24
1.47
1.65
2.11
2.41
3.05

.319
.305
.277
.259
.245
.209
.185
.135

8.10
7.75
7.04
6.58
6.22
5.31
4.70
3.43

0.15
0.19
0.25
0.29
0.32
0.39
0.42
0.44

7/16"  (.4375)

11.11

.028
.035
.049
.058
.065
.095
.120

0.71
0.89
1.24
1.47
1.65
2.41
3.05

.382
.367
.340
.322
.307
.247
.197

9.70
9.32
8.64
8.18
7.80
6.27
5.00

0.18
0.22
0.30
0.35
0.39
0.52
0.61

1/2"  (.500)

12.70

.028
.035
.049
.058
.065
.083
.095
.120

0.71
0.89
1.24
1.47
1.65
2.11
2.41
3.05

.444
.430
.402
.384
.370
.334
.310
.260

11.28
10.92
10.21
9.75
9.40
8.48
7.87
6.60

0.21
0.26
0.35
0.41
0.45
0.55
0.61
0.73

9/16"  (.5625)

14.29

.035
.049
.065
.120

0.89
1.24
1.65
3.05

.492
.464
.432
322

12.50
11.79
10.97
8.18

0.29
0.40
0.51
0.84

5/8"  (.625)

15.88

.028
.035
.049
.058
.065
.083
.095
.120
.156

0.71
0.89
1.24
1.47
1.65
2.11
2.41
3.05
3.96

.596
.555
.527
.509
.495
.459
.435
.385
.313

14.45
14.09
13.39
12.93
12.57
11.66
11.05
9.78
7.95

0.27
0.33
0.45
0.52
0.58
0.71
0.80
0.96
1.16

11/16"  (.6875)

17.46

.035

0.89

.617

15.67

0.36

3/4"  (.750)

19.05

.028
.035
.049
.058
.065
.083
.095
.120
.156
.188
.250

0.71
0.89
1.24
1.47
1.65
2.11
2.41
3.05
3.96
4.78
6.36

.694
.680
.652
.634
.620
.584
.560
.510
.438
.375
.250

17.63
17.27
16.56
16.10
15.75
14.83
14.22
12.95
11.13
9.53
6.35

0.32
0.40
0.55
0.64
0.71
0.88
0.99
1.20
1.47
1.68
2.01

13/16"  (.8125)

20.64

.035

0.89

.743

18.87

0.43

7/8"  (.875)

22.23

.035
.049
.058
.065
.083
.095
.120
.156
.188

0.89
1.24
1.47
1.65
2.11
2.41
3.05
3.96
4.78

.805
.777
.759
.745
.709
.685
.635
.563
.500

20.45
19.74
19.28
18.92
18.01
17.40
16.13
14.30
12.70

0.47
0.64
0.75
0.84
1.05
1.18
1.44
1.80
2.05

1"  (1.000)

25.4

.028
.035
.049
.058
.065
.083
.095
.120
.134
.156
.188
.250

0.71
0.89
1.24
1.47
1.65
2.11
2.41
3.05
3.40
3.96
4.78
6.36

.944
.930
.902
.884
.870
.834
.810
.760
.732
.687
.625
.500

23.98
23.62
22.91
22.45
22.10
21.18
20.57
19.30
18.59
17.45
15.87
12.70

0.43
0.54
0.74
0.87
0.97
1.22
1.37
1.68
1.85
2.09
2.43
3.00

1-1/8"  (1.125)

28.58

.028
.035
.049
.058
.065
.083
.095
.120

0.71
0.89
1.24
1.47
1.65
2.11
2.41
3.05

1.069
1.055
1.027
1.009
.995
.959
.938
.885

27.15
26.80
26.09
25.63
25.27
24.36
23.83
22.48

0.49
0.61
0.84
0.98
1.10
1.39
1.56
1.92

1-3/16"  (1.1875)

30.16

.095

2.41

.998

25.35

1.66

1-1/4"  (1.250)

31.75

.035
.049
.058
.065
.083
.095
.120
.156
.250

0.89
1.24
1.47
1.65
2.11
2.41
3.05
3.96
6.36

1.180
1.152
1.134
1.120
1.084
1.060
1.010
.937
.750

29.97
29.26
28.80
28.45
27.53
26.92
25.65
23.80
19.05

0.68
0.94
1.10
1.23
1.55
1.75
2.16
2.72
4.00

1-3/8"  (1.375)

34.93

.035
.049
.058
.065
.083
.095
.120
.188

0.89
1.24
1.47
1.65
2.11
2.41
3.05
4.78

1.305
1.277
1.259
1.245
1.209
1.185
1.135
1.000

33.15
32.44
31.98
31.62
30.71
30.10
28.83
25.40

0.75
1.03
1.22
1.35
1.72
1.93
2.40
3.55

1-1/2"  (1.500)

38.10

.035
.049
.058
.065
.083
.095
.120
.188
.250

0.89
1.24
1.47
1.65
2.11
2.41
3.05
4.78
6.36

1.430
1.402
1.384
1.370
1.334
1.310
1.260
1.125
1.000

36.32
35.61
35.15
34.80
33.88
33.27
32.00
28.58
25.40

0.82
1.13
1.33
1.48
1.87
2.12
2.63
3.92
5.00

1-5/8"  (1.625)

41.28

.049
.058
.065
.083
.095
.120
.188

1.24
1.47
1.65
2.11
2.41
3.05
4.78

1.527
1.509
1.495
1.459
1.435
1.385
1.250

38.79
38.33
37.97
37.06
36.45
35.18
31.75

1.23
1.45
1.61
2.05
2.31
2.87
4.29

1-3/4"  (1.750)

44.45

.049
.058
.065
.083
.095
.120
.188

1.24
1.47
1.65
2.11
2.41
3.05
4.78

1.652
1.634
1.620
1.584
1.560
1.510
1.375

41.96
41.50
41.15
40.23
39.62
38.35
34.92

1.32
1.56
1.74
2.21
2.50
3.11
4.67

1-7/8"  (1.875)

47.63

.058
.065
.120
.250

1.47
1.65
3.05
6.36

1.759
1.745
1.635
1.375

44.68
44.32
41.53
34.93

1.69
1.89
3.35
6.51

2"  (2.000)

50.80

.049
.058
.065
.083
.095
.120
.188
.250

1.24
1.47
1.65
2.11
2.41
3.05
4.78
6.36

1.902
1.884
1.870
1.834
1.810
1.760
1.625
1.500

48.31
47.85
47.50
46.58
45.97
44.70
41.28
38.10

1.52
1.79
2.00
2.53
2.88
3.59
5.44
7.01

2-1/8"  (2.125)

53.98

.065
.188

1.65
4.78

1.995
1.750

50.67
44.45

2.15
5.82

2-1/4"  (2.250)

57.15

.095
.120
.250

2.41
3.05
6.36

2.060
2.010
1.750

52.32
51.05
44.45

3.26
4.07
7.95

2-1/2"  (2.500)

63.50

.083
.120
.250

2.11
3.05
6.36

2.334
2.260
2.000

59.28
57.40
50.80

3.21
4.54
8.95

2-3/4"  (2.750)

69.85

.120
.250

3.05
6.36

2.510
2.250

63.75
57.15

5.02
10.01

3"  (3.000)

76.20

.120
.188

3.05
4.78

2.760
2.625

70.10
66.68

5.54
8.38

3-1/4"  (3.250)

82.55

.875

22.22

1.500

38.10

33.05

3-1/2"  (3.500)

88.9

.500

12.7

2.500

63.5

23.85

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