Section Curving Technical Data

Image of steel square bar

Square Bar

Eliott Engineering has bent square bars for trommel screen rings, architectural features, artistic works among others. Often square bars are machined after bending as an affordable alternative to cutting shapes from plate.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel square bar

DIMENSIONS

SQUARE
(MIN. INSIDE DIAMETER)

DIAGONAL
(MIN. INSIDE DIAMETER)

6

100

100

12

100

100

20

100

100

25

100

100

40

300

300

50

600

600

65

900

900

75

1000

1000

100

1100

1100

125

1500

1500

135

1800

1800

Image of steel round bar

Round Bar

Ideal for architectural applications and other assorted projects.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel round bar

DIMENSIONS

MINIMUM INSIDE DIAMETER

5

100

10

100

20

100

25

100

40

300

50

400

75

600

100

1000

125

1500

150

2000

Image of steel flat bar

Flat Bar

Flat Bars are frequently used in tank stiffeners, matching flanges, curved lintels, hand rails, curved stringers, pipe clamps and kick rails on circular platforms.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel flat bar

DIMENSIONS

HARD WAY X-X AXIS
(MIN. INSIDE DIAMETER)

EASY WAY Y-Y AXIS
(MIN. INSIDE DIAMETER)

6 x 3

100

100

16 x 3

100

100

25 x 3+

150

100

40 x 5+

200

100

50 x 5+

300

100

65 x 6+

400

100

75 x 6+

500

100

100 x 8+

800

100

130 x 10+

1200

200

150 x 10-100

1500

300-2000

180 x 10-90

2000

300-2000

200 x 10-60

3000-2500

300-2000

250 x 10-40

4000-3000

300-2000

300 x 80

-

3000

500 x 50

-

3000

Image of steel equal angle

Equal Angle

Angles are often used in tank stiffeners, matching flanges, curved lintels, hand rails, lagging rings, form work and fabricated roof trusses.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel unequal angle

DIMENSIONS

TOE IN
(MIN. INSIDE DIAMETER)

TOE OUT
(MIN. INSIDE DIAMETER)

DIAGONAL
TOE IN
(MIN. INSIDE DIAMETER)

DIAGONAL
TOE OUT
(MIN. INSIDE DIAMETER)

13 x 13 x 3+

200

100

200

100

25 x 25 x 3+

360

100

360

100

30 x 30 3-5+

NR* 400

150

400

150

40 x 40 x 3-5+

NR* 450

200

450

200

50 x 50 x 3-6+

NR* 500

300

500

300

60 x 65 x 5-6+

NR* 800

400

800

400

75 x 75 x 6-8+

NR* 1100

500

1100

500

90 x 90 x 8-10+

NR* 1200

800

1200

800

100 x 100 x 8-10+

NR* 1500

1200

1500

1200

125 x 125 x 8-12+

NR* 2000

1500

2000

1500

150 x 150 x 10-12+

NR* 3000

1800

3000

1800

200 x 200 x 13-18+

7000-4000

2000

4000

3000

Image of steel unequal angle

Unequal Angle

Unequal angles are often used in tank stiffeners, matching flanges, curved lintels, hand rails, lagging rings, form work and fabricated roof trusses.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel unequal angle

DIMENSIONS

BIG TOE
TOE IN
(MIN. INSIDE DIAMETER)

SMALL TOE
TOE IN
(MIN. INSIDE DIAMETER)

BIG TOE
TOE OUT
(MIN. INSIDE DIAMETER)

SMALL TOE
TOE OUT
(MIN. INSIDE DIAMETER)

65 x 50 x 6+

800

500

400

400

75 x 50 x 6+

1100

600

500

400

100 x 75 x 6+

1500

750

1200

600

125 x 75 x 6+

2000

1100

1500

900

150 x 90 x 8-10+

6000-3000

2000-1200

3000-1700

1200-1000

150 x 100 x 10-12

6000-3000

2500-1800

3000-1800

1500-1200

Image of steel tee

Tees

Tee sections are primarily used in architectural features and open web trusses.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

 

Line drawing of steel tees

DIMENSIONS

WEB UP
(MIN. INSIDE DIAMETER)

WEB IN
(MIN. INSIDE DIAMETER)

WEB OUT
(MIN. INSIDE DIAMETER)

25 x 25 x 3.5

150

360

150

30 x 30 x 4.0

150

400

150

40 x 40 x 5.0Ā 

200

450

200

50 x 50 x 6.0

300

500

300

50 CT

7.4

800

800

500

75 BT

7.0

500

1800

1000

75 BT

90.0

500

1500

800

75 CT

11.7

6000

1800

900

75 CT

15.0

2500

1600

800

75 CT

18.6

1500

1400

700

90 BT

9.0

700

2000

1200

90 BT

11.1

700

1800

1000

10 BT

12.7

2000

2200

1500

10 BT

14.9

1500

2000

1300

100 CT

23.1

4500

3200

2000

100 CT

26.1

3500

3000

1800

100 CT

29.8

3000

2800

1600

125 BT

15.7

2000

2500

2000

125 BT

18.6

1500

2300

1800

125 CTĀ 

36.5

6000

4500

3500

125 CT

44.8

4500

4000

3000

155 BT

20.2

2000

6000

4000

155 BT

23.1

2000

5000

3000

155 CT

48.4

-

60000

35000

155 CT

59.0

-

55000

33000

155 CT

68.5

-

50000

32000

155 CT

79.0

-

45000

30000

180 BT

22.4

2500

30000

10000

180 BT

25.3

2300

25000

8000

180 BT

28.3

2200

20000

6000

205 BT

26.8

3000

40000

-

205 BT

30.0

2800

35000

-

230 BT

37.3

4500

75000

-

230 BT

41.0

4000

65000

-

265 BT

41.0

4500

NR*

-

265 BT

47.2

4000

NR*

-

305 BT

50.5

4500

NR*

-

305 BT

62.5

4300

NR*

-

Image of steel channel

Channel

Channels are featured in tank stiffeners, tank supports, roof beams, circular platforms and fabricated trusses.

The table below the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel channel

DIMENSIONS

HARD WAY
X-X AXIS
(MIN. INSIDE DIAMETER)

TOES IN
Y-Y AXIS
(MIN. INSIDE DIAMETER)

TOES OUT
Y-Y AXIS
(MIN. INSIDE DIAMETER)

51 x 25

TFC

1000

300

300

75 x 40

PFC

2000

400

400

100 x 50

PFC

2500

500

500

125 x 65


PFC

4000

800

800

150 x 75


PFC

6000

1200

1000

180 x 75

PFC

8000

1400

1400

200 x 75

PFC

14000

1400

1400

230 x 75

PFC

18000

1400

1400

250 x 90

PFC

20000

1600

1600

300 x 90

PFC

35000

1600

1600

380 x 100

PFC

NR*

2500

2500

Image of steel universal column

Universal Column

This structural section has wide application in building and industrial uses, similar to the universal beam.

The table below the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of universal column

DIMENSIONS

HARD WAY
X-X AXIS
(MIN. INSIDE DIAMETER)

EASY WAY
Y-Y AXIS
(MIN. INSIDE DIAMETER)

100UC

14.8

Please enquire

1600

150UC

23.4

Please enquire

-

150UC

30.0

Please enquire

3000

150UC

37.2

Please enquire

1800

200UC

46.2

Please enquire

-

200UC

52.2

Please enquire

5000

200UC

59.5

Please enquire

3500

250UC

72.9

Please enquire

15000

250UC

89.5

Please enquire

4000

Image of steel universal beam

Universal Beam

The universal beam applications include tanks supports, roof Ā beams, bridge beams, camberedĀ beams, tunnel supports, curved lifting beams (horizontal and vertical) and circular platforms.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of universal beam

DIMENSIONS

HARD WAY
X-X AXIS
(MIN. INSIDE DIAMETER)

EASY WAY
Y-Y AXIS
(MIN. INSIDE DIAMETER)

100 x 45

RSJ

Please enquire

600

100 x 75

RSJ

Please enquire

600

125 x 65

RSJ

Please enquire

800

150 UB

14.0

Please enquire

3000

150 UB

18.0

Please enquire

1000

180 UB

16.1

Please enquire

4000

180 UB

18.1

Please enquire

3000

180 UB

22.2

Please enquire

1000

200 UB

18.3

Please enquire

4000

200 UB

22.2

Please enquire

6000

200 UB

25.4

Please enquire

2500

200 UB

29.8

Please enquire

2000

250 UB

25.7

Please enquire

4000

250 UB

31.4

Please enquire

2500

250 UB

37.3

Please enquire

1800

310 UB

32.0

Please enquire

6000

310 UB

40.3

Please enquire

4000

310 UB

46.2

Please enquire

2000

360 UB

44.7

Please enquire

8000

360 UB

56.7

Please enquire

2200

410 UB

53.7

Please enquire

6000

410 UB

59.7

Please enquire

2400

460 UB

67.1

Please enquire

10000

460 UB

74.6

Please enquire

4000

460 UB

82.1

Please enquire

3500

530 UB

82.0

Please enquire

6000

530 UB

92.4

Please enquire

5000

610 UB

101.0

Please enquire

12000

610 UB

113.0

Please enquire

11000

610 UB

125.0

Please enquire

10000

Image of steel circular hollow section

Circular Hollow Section

Circular hollow sections are commonly used structural and architectural applications.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel circular hollow section

OUTSIDE DIAMETER

WALL THICKNESS

NORMAL SIZE

TYPE

WHOLE & HALF PIPE
(MIN. INSIDE DIAMETER)

13.5

2.3

8

Medium

200

13.5

2.9

8

Heavy

200

17.2

2.3

10

Medium

250

17.2

2.9

10

Heavy

250

21.3

2.0

15

Galtube

300

21.3

2.0

15

Light

300

21.3

2.6

15

Medium

250

21.3

3.2

15

Heavy

250

21.3

3.6

15

X Heavy

250

21.3

26.9

2

Galtube

350

21.3

2.3

2

Light

350

21.3

2.6

2

Medium

300

21.3

3.2

2

Heavy

300

21.3

3.6

2

X Heavy

300

33.7

3.2

25

Medium

350

33.7

4.0

25

Heavy

350

33.7

4.5

25

XĀ Heavy

350

42.4

3.2

32

Medium

450

42.4

4.0

32

Heavy

400

42.4

4.9

32

XĀ Heavy

400

48.3

3.2

40

Medium

500

48.3

4.0

40

Heavy

450

48.3

5.4

40

XĀ Heavy

450

60.3

3.6

50

Medium

550

60.3

4.5

50

Heavy

500

60.3

5.4

50

XĀ Heavy

500

76.1

3.6

65

Medium

650

76.1

4.5

65

Heavy

600

76.1

5.9

65

X Heavy

600

88.9

4.0

80

Medium

900

88.9

4.9

80

Heavy

800

88.9

5.9

80

X Heavy

800

101.6

4.0

90

Medium

1100

101.6

4.9

90

Heavy

1000

114.3

4.5

100

Medium

1300

114.3

5.4

100

Heavy

1200

139.7

4.9

125

Medium

1800

139.7

5.4

125

Heavy

1300

165.1

4.9

150

Medium

2000

165.1

5.4

150

Heavy

1500

 

OUTSIDE DIAMETER

WALL THICKNESS

NORMAL SIZE

DESCRIPTION

WHOLE & HALF PIPE
(MIN. INSIDE DIAMETER)

13.7

16.50

8

10S

200

13.7

2.24

8

40, 40S, STD

200

13.7

3.02

8

80, 80S, XS

200

17.1

1.65

10

10S

250

17.1

2.31

10

40, 40S, STD

250

17.1

3.20

10

80, 80S, XS

250

21.3

1.65

15

5S

300

21.3

2.11

15

10S

250

21.3

2.77

15

40, 40S, STD

250

21.3

3.73

15

80, 80S, XS

250

21.3

4.78

15

160

250

21.3

7.74

15

XXS

250

26.7

1.65

20

5S

350

26.7

2.11

20

10S

300

26.7

2.87

20

40, 40S, STD

300

26.7

3.91

20

80, 80S, XS

350

26.7

5.56

20

160

350

26.7

7.82

20

XXS

450

33.4

1.65

25

5S

400

33.4

2.77

25

10S

350

33.4

3.38

25

40, 40S, STD

350

33.4

4.55

25

80, 80S, XS

350

33.4

6.35

25

160

350

33.4

9.09

25

XXS

350

42.2

2.77

32

10S

500

42.2

3.56

32

40, 40S, STD

450

42.2

4.85

32

80, 80S, XS

400

42.2

6.35

32

160

400

42.2

9.70

32

XXS

400

48.3

2.77

40

10S

550

48.3

3.68

40

40, 40S, STD

500

48.3

5.08

40

80, 80S, XS

450

48.3

7.14

40

160

450

48.3

10.15

40

XXS

450

60.3

2.77

50

10S

650

60.3

3.91

50

40, 40S, STD

600

60.3

5.54

50

80, 80S, XS

500

60.3

8.74

50

160

500

60.3

11.07

50

XXS

500

73.0

3.05

65

10S

700

73.0

5.16

65

40, 40S, STD

600

73.0

7.01

65

80, 80S, XS

600

73.0

9.53

65

160

600

73.0

14.02

65

XXS

600

88.9

4.80

80

30

850

88.9

5.49

80

40, 40S, STD

800

88.9

7.62

80

80, 80S, XS

800

88.9

11.13

80

160

800

88.9

15.24

80

XXS

800

101.6

5.74

90

40, 40S, STD

1000

101.6

8.08

90

80, 80S, XS

1000

114.3

4.80

100

30

1400

114.3

6.02

100

40, 40S, STD

1300

114.3

8.56

100

80, 80S, XS

1200

114.3

11.30

100

120

1200

114.3

13.49

100

160

1200

114.3

17.12

100

XXS

1200

141.3

6.55

125

40, 40S, STD

1500

141.3

9.53

125

80, 80S, XS

1400

141.3

12.70

125

120

1400

141.3

15.88

125

160

1400

141.3

19.05

125

XS

1400

168.3

7.11

150

40, 40S, STD

1500

168.3

10.97

150

80, 80S, XS

1500

168.3

14.27

150

120

1500

168.3

18.26

150

160

1500

168.3

21.95

150

XXS

1500

219.1

6.35

200

20

2500

219.1

7.04

200

30

2400

219.1

8.18

200

40, 40S, STD

2400

219.1

10.31

200

60

2400

219.1

12.70

200

80, 80S, XS

2400

219.1

15.09

200

100

2400

219.1

18.26

200

120

2400

219.1

20.60

200

140

2400

273.1

6.35

250

20

4000

273.1

7.80

250

30

3500

273.1

9.27

250

15, 40S, STD

3000

Image of steel rectangular hollow section

Rectangular Hollow Section

Eliott Engineering bends rectangular hollow sections for curved formwork, barrel vaults, roof trusses and bridge rails.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel rectangular hollow section

DIMENSIONS

WALL

HARD WAY
X-X AXIS
(MIN. INSIDE DIAMETER)

EASY WAY
Y-Y AXIS
(MIN. INSIDE DIAMETER)

50 x 20

1.6

2000

3000

50 x 20

2.0

1500

2000

50 x 20

2.5

1000

1500

50 x 20

3.0

400

800

50 x 25

1.6

2000

3000

50 x 25

2.0

1200

2000

50 x 25

2.5

800

1200

50 x 25

3.0

500

1000

65 x 35

2.0

4000

6000

65 x 35

2.5

2000

3000

65 x 35

3.0

1500

2000

75 x 25

2.0

3000

3500

75 x 25

2.5

2000

2000

75 x 50

3.0

3000

5000

75 x 50

4.0

1300

2000

75 x 50

5.0

1200

1800

75 x 50

6.0

1100

1600

100 x 50

4.0

2400

3000

100 x 50

5.0

2000

2400

100 x 50

6.0

1200

1800

125 x 75

5.0

3000

8000

125 x 75

6.0

2500

6000

150 x 50

4.0

6000

10000

150 x 50

5.0

3000

6000

150 x 100

5.0

12000

15000

150 x 100

6.0

6000

8000

200 x 100

6.0

8000

20000

200 x 100

9.0

6000

10000

250 x 150

6.0

30000

40000

250 x 150

9.0

15000

20000

Image of steel square hollow section

Square Hollow Section

Eliott Engineering bends square hollow sections for structural projects including curved formwork, barrel vaults, roof trusses and bridge rails.

The table below shows the tightest curvature generally achievable. These figures are nominally based on 300 grade steel, and should be interpreted as indicative only.

Line drawing of steel square hollow section

DIMENSIONS

WALL

SQUARE
(MIN. INSIDE DIAMETER)

DIAGONAL
(MIN. INSIDE DIAMETER)

13 x 13

1.8

200

200

15 x 15

1.8

200

200

20 x 20

1.6

200

200

25 x 25

1.6

300

300

25 x 25

2.0

250

250

25 x 25

2.5

200

200

25 x 25


3.0

200

200

30 x 30

1.6

500

500

30 x 30

2.0

350

350

35 x 35

1.6

800

800

35 x 35

2.0

600

600

35 x 35

2.5

500

500

35 x 35

3.0

450

500

40 x 40

2.0

1000

1000

40 x 40

2.5

800

800

40 x 40

3.0

600

600

40 x 40

4.0

450

450

50 x 50

3.0

800

550

50 x 50

4.0

550

2000

65 x 65

5.0

2000

3000

75 x 75

6.0

3000

250

75 x 75

3.6

2500

2500

75 x 75

4.9

2000

2000

75 x 75

6.3

1400

1400

89 x 89

4.0

2700

2700

89 x 89

5.0

2200

2200

89 x 89

6.0

1800

1800

100 x 100

9.0

3000

8000

100 x 100

4.0

25000

3000

100 x 100

5.0

2000

25000

100 x 100

6.0

16000

2000

125 x 125

4.0

10000

16000

125 x 125

5.0

8000

10000

125 x 125

6.0

6000

8000

125 x 125

9.0

20000

6000

150 x 150

6.0

20000

20000

150 x 150

9.0

8000

8000

200 x 200

6.0

30000

30000

200 x 200

9.0

12000

12000

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