Iron Sheets
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Super V - R.03
Hollow Sections
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Rectangular Hollow Section
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Technical Specifications for Rectangular Hollow Sections
Size a x b (mm)
Wall Thickness t (mm)
Weight kg/mtr
Sectional Area cm2
Moment of inertia 1xx cm4
Moment of inertia 1yy cm4
Radius of Gyration 1xx cm
Radius of Gyration 1yy cm
Modulus of section Zxx cm3
Modulus of section Zyy cm3
30 x 20
1
0.75
0.96
0.6
1.21
0.82
1.12
1.41
1.08
30 x 20
1.2
0.9
1.14
0.73
1.42
0.8
1.11
1.66
1.27
30 x 20
1.5
1.1
1.4
0.89
1.71
0.79
1.1
2.03
1.54
30 x 20
2
1.43
1.82
1.11
2.16
0.78
1.08
2.59
1.94
30 x 20
2.5
1.74
2.22
1.3
2.55
0.75
1.06
4.25
2.18
30 x 20
3
2.04
2.6
1.45
2.89
0.74
1.05
3.56
2.61
30 x 20
1.2
1.23
1.5
3.32
1.59
1.49
1.03
1.66
1.27
30 x 20
1.5
1.54
1.86
4.04
1.93
1.47
1.01
2.02
1.54
40 x 25
2
1.88
2.44
5.17
2.43
1.45
0.99
2.59
1.94
DIMENSIONAL TOLERANCES
Outside Diameter
Round Hollow Section
Rectangular Hollow Section
Outside Diameter
As Per Table
1.5 mm or 1.5%
Wall thickness
Light -8
Weight
Medium & heavy 10%
Single + 10-8%
LOTS>150M + 4%
6%
Straightness
Deviation,2% of total length
Length
Mill Lengths (m) + 50 mm-0 mm
Exact Lengths + 6 mm-0 m
Squareness of sides
radii of corner
Angular twist
90 + 1
<3times wall thickness
2mm + mm per mtr. Max
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