Square rectangular steel tube is used for general structure

一般结构用方矩型钢管   ERW Square and Rectangular Steel Tube for General Structure　

执行标准（Standard）:   JISG3466-88  GB6728-2002

OD(mm)/Mass(kg/m)/Wall Thickness(mm)

1.5

2.0

2.3

2.5

2.75

3.0

3.2

3.5

3.75

4.0

4.5

5.0

6.0

40×40

2.31

2.62

2.82

3.06

3.30

3.49

3.76

3.98

4.20

50×50

3.34

3.60

3.93

4.25

4.50

4.86

5.16

5.45

60×60

4.06

4.39

4.79

5.19

5.50

5.96

6.34

6.71

60×40

3.34

3.60

3.39

4.25

4.50

4.86

5.16

5.45

50×30

2.62

2.82

2.06

3.30

3.49

3.76

3.98

4.20

80×40

4.00

4.39

4.79

5.19

5.50

5.96

6.34

6.71

80×60

4.78

5.17

5.65

6.13

6.51

7.06

7.52

7.97

8.85

100×50

5.14

5.56

6.09

6.60

7.01

7.61

8.11

8.59

9.55

10.49

120×50

7.54

8.01

8.71

9.28

9.85

10.97

12.05

14.16

100×100

9.52

10.4

11.1

11.7

13.1

14.4

17.0

120×120

12.6

13.4

14.2

15.9

17.5

20.8