Rectangular steel Pipe

SIZE mm

WEIGHT kg/m

EST. LBS. PER FT.

SIZE mm

WEIGHT kg/m

 EST. LBS. PER FT.

40 x 20 x 1.60

1.380

0.93

150 x 100 x 6.30

22.400

15.08

40 x 20 x 2.60

2.100

1.41

150 x 100 x 8.00

27.700

18.64

50 x 30 x 1.60

1.880

1.27

150 x 100 x 10.00

35.714

24.04

50 x 30 x 2.60

2.920

1.97

160 x 80 x 3.20

11.500

7.74

50 x 30 x 2.90

3.320

2.23

160 x 80 x 4.00

14.300

9.62

50 x 30 x 3.20

3.490

2.35

160 x 80 x 5.00

17.400

11.71

50 x 30 x 4.00

4.410

2.97

160 x 80 x 6.30

21.400

14.40

60 x 40 x 2.60

3.730

2.51

160 x 80 x 8.00

26.400

17.77

60 x 40 x 2.90

4.230

2.85

160 x 80 x 10.00

32.545

21.87

60 x 40 x 3.20

4.500

3.03

160 x 90 x 4.50

16.600

11.17

60 x 40 x 4.00

5.670

3.82

160 x 90 x 5.60

20.400

13.73

70 x 40 x 2.90

4.690

3.16

160 x 90 x 7.10

25.300

17.03

70 x 40 x 4.00

6.300

4.24

160 x 90 x 8.80

30.500

20.53

80 x 40 x 2.60

4.550

3.06

160 x 90 x 10.00

34.100

22.95

80 x 40 x 2.90

5.140

3.46

180 x 100 x 4.00

16.800

11.31

80 x 40 x 3.20

5.500

3.70

180 x 100 x 5.00

20.500

13.80

80 x 40 x 4.00

6.930

4.66

180 x 100 x 5.60

23.000

15.48

80 x 40 x 5.00

8.470

5.70

180 x 100 x 6.30

25.400

17.09

80 x 40 x 6.30

10.400

7.00

180 x 100 x 7.10

28.600

19.25

90 x 50 x 2.60

5.370

3.61

180 x 100 x 8.80

34.700

23.35

90 x 50 x 3.20

6.640

4.47

180 x 100 x 10.00

38.800

26.11

90 x 50 x 4.00

8.180

5.51

180 x 100 x 12.50

46.900

31.56

90 x 50 x 5.00

10.000

6.73

200 x 100 x 4.00

18.000

12.11

90 x 50 x 6.30

12.300

8.28

200 x 100 x 5.00

22.100

14.20

90 x 50 x 7.10

13.700

9.22

200 x 100 x 6.30

27.400

18.44

100 x 50 x 3.60

7.980

5.37

200 x 100 x 8.00

34.000

22.88

100 x 50 x 4.50

9.830

6.62

200 x 100 x 10.00

40.600

27.32

100 x 50 x 5.60

12.000

8.08

200 x 120 x 4.00

19.300

12.99

100 x 50 x 7.10

14.800

9.96

200 x 120 x 5.00

23.700

15.95

100 x 50 x 8.00

16.400

11.04

200 x 120 x 6.30

29.600

19.92

100 x 60 x 3.20

7.510

5.05

200 x 120 x 8.00

36.500

24.56

100 x 60 x 3.60

8.550

5.75

200 x 120 x 8.80

36.900

24.83

100 x 60 x 4.50

10.500

7.07

200 x 120 x 10.00

45.100

31.62

100 x 60 x 5.60

12.900

8.68

200 x 120 x 12.50

54.700

38.87

100 x 60 x 6.30

13.500

9.09

200 x 120 x 14.20

60.900

43.64

100 x 60 x 7.10

15.900

10.70

220 x 80 x 6.00

26.816

18.02

100 x 60 x 8.80

19.200

12.92

220 x 120 x 6.30

31.600

21.27

100 x 80 x 6.3

16.370

11.02

220 x 120 x 8.00

39.400

26.52

110 x 60 x 3.60

9.050

6.09

220 x 120 x 10.00

46.200

31.09

110 x 60 x 4.50

11.100

7.47

220 x 120 x 12.50

58.700

39.51

110 x 60 x 5.60

13.600

9.15

220 x 120 x 14.20

65.400

44.01

110 x 60 x 7.10

16.800

11.31

250 x 150 x 5.00

29.900

20.12

110 x 60 x 8.80

20.100

13.53

250 x 150 x 6.30

37.300

25.10

110 x 70 x 3.20

8.510

5.73

250 x 150 x 8.00

46.500

31.29

110 x 70 x 4.00

10.800

7.27

250 x 150 x 10.00

56.300

37.89

110 x 70 x 5.00

12.700

8.55

250 x 150 x 12.50

68.300

45.97

110 x 70 x 6.30

15.500

10.43

260 x 140 x 6.30

37.500

25.23

120 x 60 x 3.20

8.510

5.73

260 x 140 x 8.00

46.900

31.56

120 x 60 x 4.00

10.600

7.13

260 x 140 x 10.00

57.600

38.76

120 x 60 x 5.00

13.000

8.75

260 x 140 x 12.50

70.400

47.38

120 x 60 x 6.30

16.100

10.84

260 x 140 x 14.20

78.800

53.03

120 x 60 x 7.10

17.900

12.05

260 x 180 x 6.30

41.500

27.93

120 x 60 x 8.80

21.500

14.47

260 x 180 x 8.00

52.000

35.00

120 x 80 x 3.20

12.100

8.14

260 x 180 x 10.00

63.900

43.00

120 x 80 x 6.30

17.500

11.78

260 x 180 x 12.50

78.300

52.70

140 x 70 x 4.00

12.500

8.41

260 x 180 x  14.20

87.700

59.02

140 x 70 x 5.00

15.400

10.36

300 x 100 x 5.00

30.268

20.34

140 x 70 x 6.30

19.000

12.79

300 x 100 x 8.00

47.679

32.04

140 x 70 x 7.10

21.200

14.27

300 x 100 x 10.00

58.979

39.63

140 x 70 x 8.80

25.600

17.23

300 x 200 x 5.00

37.800

25.44

140 x 80 x 3.20

10.500

7.07

300 x 200 x 6.30

47.100

31.70

140 x 80 x 4.00

13.100

8.82

300 x 200 x 8.00

59.100

39.77

140 x 80 x 5.00

16.200

10.90

300 x 200 x 10.00

72.000

48.46

140 x 80 x 6.30

20.000

13.46

300 x 200 x 12.00

88.000

59.22

140 x 80 x 8.00

24.800

16.69

140 x 80 x 10.00

30.200

20.32

150 x 100 x 3.20

12.000

8.08

150 x 100 x 4.00

14.900

10.03

Dimensional Tolerances

Outside Diameter:

Twist:

Maximum twist per 3 feet of length

Largest outside dimension

Outside tolerance including convexity and concavity

Longest outside dimension

up to 2 1/2"

±.020"

2" to 2 1/2"inclusive

.062"

over 21/2" to 31/2" inclusive

±.025"

over 21/2" to 4" inclusive

.075"

over 31/2" to 51/2" inclusive

±.030"

over 4" to 6" inclusive

.087"

over 51/2"

±1%

over 6" to 8" inclusive

100"

Tolerances include allowance for convexity or concavity. For
rectangular sections, the tolerance calculated for the larger flat
dimension shall also apply to the smaller flat dimension. This
tolerance may be increased 50 percent when applied to the
smaller dimension, if the ratio of cross sectional dimension
is between 1.5 and 3, and 100 percent when the ratio exceeds 3.

over 8"

112"

Straightness:
Permissable variation shall be 1/8" times the number of feet of total length divided by 5:

.125" x (total length) ÷ 5

Wall Thickness:

Squareness of Sides:

Maximum allowable variation

±10%

Adjacent sides may deviate from 90° by a tolerance of plus or minus 2 degrees maximum.

(wall thickness is to be measured at the center of the flat, exclusive
of the weld area, and not at the corners)

Worner Radii:

Flash:

The radius of any outside corner shal not exceed three times
the specified wall thickness

Structural tubing usually is supplied flash-in. The height of the
flash will vary with the wall thickness of the tube.

Grade Designation

Chemistry-Ladle Analysis

Carbon

Manganese

Phosporous

Sulfur

A501 (A36)

0.26% max

-

0.04% max

0.05% max

A500A

0.26% max

-

0.04% max

0.05% max

A500B

0.26% max

-

0.04% max

0.05% max

A500C

0.23% max

1.35% max

0.04% max

0.05% max

Copper, when copper steel is specified, 0.20% minimum.

Mechanical Properties

Grade Designation

Grade

Tensile Strength

Yield Strength Minimum

Elongation In 2 Inches Minimum

Condition

Minimum

A501 (A36)

Hot Formed

58,000 psi

36,000 psi

23%

A500A

Cold Formed

45,000 psi

39,000 psi

25%

A500B

Cold Formed

58,000 psi

46,000 psi

23%

A500C

Cold Formed

62,000 psi

50,000 psi

21%

Data

Elements（%）

Materal Grade

C

Mn

S

P

Si

Q195

0.06-0.12

0.25-0.50

<0.05

<0.045

<0.30

Q215

0.09-0.15

0.25-0.55

<0.05

<0.045

<0.30

Q235

0.12-0.20

0.30-0.70

<0.045

<0.045

<0.30

Q345

<0.20

1.0-1.6

<0.04

<0.04

<0.55

Materal Grade

Yield point (Mpa)

Tensile Strength (Mpa)

Elongation(%)

Q195

>195

315-430

32-33

Q215

>215

335-450

26-31

Q235

>235

375-500

24-26

Q345

>345

470-630

21-22

Length

+/- 50 MM

Wall Thickness

+/- 12.5%

Weight

+/- 8%