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  • Square Structural Tube

    Square Structural Tube

    ASTM 500 Standard specification for cold-formed welded and seamless carbon steel structural tubing in rounds and shapes.This specification covers cold-formed steel round, square, rectangular, or special shape structural tubing for welded, riveted, or bolted construction of bridges and buildings, and for general structural. 

    Square tube sizes

     Carbon Steel Square Tube
    Size in Average Wall Wt. Per Ft

    Inches

    Gauge

    Decimal

    in lbs.

    1/2 x 1/2

    16

    0.065

    0.385

    14

    0.083

    0.470

    3/4 x 3/4

    16

    0.065

    0.605

    14

    0.083

    0.753

    11

    0.120

    1.030

    1 x 1

    1/8

    0.125

    1.028

    16

    0.065

    0.827

    14

    0.083

    1.035

    1/8

    0.125

    1.436

    1 1/4 x 1 1/4

    16

    0.065

    1.048

    14

    0.083

    1.317

    1/8

    0.125

    1.844

    3/16

    0.188

    2.62

    1/4

    0.250

    4.11

    1 1/2 x 1 1/2

    16

    0.065

    1.269

    14

    0.083

    1.60

    1/8

    0.125

    2.252

    3/16

    0.188

    3.23

    1/4

    0.250

    4.11

    1 3/4 x 1 3/4

    16

    0.065

    1.49

    14

    0.083

    1.88

    1/8

    0.125

    2.66

    3/16

    0.188

    3.99

    2 x 2

    16

    0.065

    1.7103

    14

    0.083

    2.163

    1/8

    0.125

    3.067

    3/16

    0.188

    4.32

    5/16

    0.313

    6.32

    1/4

    0.250

    5.41

    2 1/2 x 2 1/2

    16

    0.065

    2.15

    14

    0.083

    2.73

    1/8

    0.125

    3.90

    3/16

    0.188

    5.59

    1/4

    0.250

    7.11

    5/16

    0.313

    8.43


      Carbon Steel  
    Size in Average Wall Wt. Per Ft

    Inches

    Gauge

    Decimal

    in lbs.

    3 x 3

    16

    0.065

    2.59

    14

    0.083

    3.26

    1/8

    0.125

    4.75

    3/16

    0.188

    6.87

    1/4

    0.250

    8.81

    5/16

    0.313

    10.58

     3 1/2 x 3 1/2

    14

    0.083

    3.80

    1/8

    0.125

    5.61

    3/16

    0.188

    8.15

    1/4

    0.250

    10.51

    5/16

    0.313

    12.70

    3/8

    0.375

    14.72

    4 x 4

    1/8

    0.125

    6.46

    3/16

    0.188

    9.52

    1/4

    0.250

    12.21

    5/16

    0.313

    14.83

    3/8

    0.375

    17.27

    1/2

    0.500

    21.63


      Carbon Steel  
    Size in Average Wall Wt. Per Ft

    Inches

    Gauge

    Decimal

    in lbs.

    4 1/2 x 4 1/2

    3/16

    0.188

    10.70

    1/4

    0.250

    13.91

    5/16

    0.313

    16.96

    3/8

    0.375

    19.82

    1/2

    0.500

    25.03

    5 x 5

    3/16

    0.188

    11.97

    1/4

    0.250

    15.62

    5/16

    0.313

    19.08

    3/8

    0.375

    22.37

    1/2

    0.500

    28.43

    5/8

    0.625

    33.76

    5 1/2 x 5 1/2

    3/16

    0.188

    13.30

    1/4

    .250

    17.32

    5/16

    0.313

    21.22

    3/8

    0.375

    24.93

    1/2

    0.500

    31.84

    6 x 6

    3/16

    0.188

    14.53

    1/4

    0.250

    19.02

    5/16

    0.313

    23.34

    3/8

    0.375

    27.48

    1/2

    0.500

    35.24

    5/8

    0.625

    42.30

    7 x 7

    3/16

    0.188

    17.08

    1/4

    0.250

    22.42

    5/16

    0.313

    27.59

    3/8

    0.375

    32.58

    1/2

    0.500

    42.05

    5/8

    0.625

    50.81

      Carbon Steel  
    Size in Average Wall Wt. Per Ft

    Inches

    Gauge

    Decimal

    in lbs.

    8 x 8

    3/16

    0.188

    19.63

    1/4

    0.250

    25.82

    5/16

    0.313

    31.84

    3/8

    0.375

    37.69

    1/2

    0.500

    48.85

    5/8

    0.625

    59.32

    9 x 9

    1/4

    0.250

    29.23

    5/16

    0.313

    36.12

    3/8

    0.375

    42.79

    1/2

    0.500

    55.66

    5/8

    0.625

    67.82

    10 x 10

    3/16

    0.188

    24.73

    1/4

    0.250

    32.63

    5/16

    0.313

    40.35

    3/8

    0.375

    47.90

    1/2

    0.500

    62.46

    5/8

    0.625

    76.33

    12 x 12

    3/16

    0.188

    29.84

    1/4

    0.250

    39.43

    5/16

    0.313

    48.86

    3/8

    0.375

    58.10

    1/2

    0.500

    76.07

    5/8

    0.625

    93.34

    14 x 14

    5/16

    0.313

    57.36

    3/8

    0.375

    68.31

    1/2

    0.500

    89.68

    5/8

    0.625

    110.36

    16 x 16

    5/16

    0.313

    65.87

    3/8

    0.375

    78.52

    1/2

    0.500

    103.30

    5/8

    0.625

    127.37


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