Black Circular Hollow Sections (CHS) are high-strength, cold formed hollow sections, coated with a mineral based finish that is easily removed by an alkali solution or kerosene.

Unless used for benign corrosion environments, the coating will need to be removed for further priming and top coating. Black CHS can be fabricated using normal workshop techniques and standard pre-treatment processes will easily prepare the product prior to galvanizing.

Typical Uses
  • Agriculture
  • Engineering Construction
  • Manufacturing
  • Mining Investment
  • Non-Residential Construction
  • Residential Construction
  • Transport & Storage
Features
  • Mineral-based finish, which can be easily removed prior to fabrication
Relevant Standards
  • AS/NZS 1163:2009

Nominal Size (DN)

Section

Outside Diameter (mm)

Wall Thickness (mm)

Mass (kg/m)

Metres Per Tonne

Available Lengths

Pack Size (lns)

25

Extra Light

33.7

2.0

1.56

640

6.5

91

Light

2.6

1.99

501

6.5

91

Medium

3.2

2.41

414

6.5

91

Heavy

4.0

2.94

340

6.5

91

32

Extra Light

42.4

2.0

1.99

502

6.5

61

Light

2.6

2.55

392

6.5

61

Medium

3.2

3.10

322

6.5

61

Heavy

4.0

3.80

263

6.5

61

40

Extra Light

48.3

2.3

2.61

382

6.5

61

Light

2.9

3.25

308

6.5

61

Medium

3.2

3.57

280

6.5

61

Heavy

4.0

4.38

228

6.5

61

Extra Heavy

5.4

5.71

175

6.5

61

50

Extra Light

60.3

2.3

3.29

304

6.5

37

Light

2.9

4.11

244

6.5

37

Medium

3.6

5.03

199

6.5

37

Heavy

4.5

6.19

161

6.5

37

Extra Heavy

5.4

7.31

137

6.5

37

65

Extra Light

76.1

2.3

4.19

239

6.5

37

Light

3.2

5.75

174

6.5

37

Medium

3.6

6.43

156

6.5

37

Heavy

4.5

7.93

126

6.5

37

Extra Heavy

5.9

10.20

97.9

6.5

37

80

Extra Light

88.9

2.6

5.53

181

6.5

19

Light

3.2

6.76

148

6.5

19

Medium

4.0

8.37

120

6.5

19

Heavy

5.0

10.30

96.8

6.5

19

Extra Heavy

5.9

12.10

82.8

6.5

19

90

Extra Light

101.6

2.6

6.35

158

6.5

19

Light

3.2

7.77

129

6.5

19

Medium

4.0

9.63

104

6.5

19

Heavy

5.0

11.90

84

6.5

19

100

Extra Light

114.3

3.2

8.77

114

6.5

19

Light

3.6

9.83

102

6.5

19

Medium

4.5

12.2

82.2

6.5

19

Heavy

5.4

14.5

69.1

6.5

19

125

Extra Light

139.7

3.0

10.1

98.9

6.5

13

Light

3.5

11.8

85.1

6.5

13

Medium

5.0

16.6

60.2

6.5

13

Heavy

5.4

17.9

55.9

6.5

13

150

Extra Light

165.1

3.0

12.0

83.4

6.5

10

Light

 

3.5

13.9

71.7

6.5

10

Medium

 

5.0

19.7

50.7

6.5

10

Heavy

 

5.4

21.3

47.0

6.5

10

Liberty OneSteel Metalcentre can provide the following processing services for this product:

> Cut-to-length

Please contact your nearest Liberty OneSteel Metalcentre branch for more information.

Liberty OneSteel Metalcentre can provide delivery services for this product.

Please contact your nearest Liberty OneSteel Metalcentre branch for more information.

The following downloads are available for this product:

> Design Capacity Tables for Structural Steel Hollow Sections

> Telescoping Guide - CHS & RHS

> End Colour Chart

Please contact your nearest Liberty OneSteel Metalcentre branch for more information.