Circular hollow sections in sizes ranging from 25.4mm OD up to 610mm OD.
rectangular hollow sections ranging from 38x25mm to 600x600mm.
Square hollow sections ranging from 38x25mm to 600x600mm
Grade C250 and Grade C350 Circular Hollow Sections (CHS)
Grade C350 and Grade C450 Rectangular Hollow Sections (RHS)
Grade C350 and Grade C450 Square Hollow Sections (SHS)
|
Steel |
Chemical composition( cast or product analysis ％ max. |
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|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Al |
Ti |
Micro-alloying |
CE |
|
|
C250 |
0.12 |
0.05 |
0.5 |
0.03 |
0.03 |
0.15 |
0.1 |
0.1 |
0.04 |
0.03 |
0.25 |
|
C350 |
0.2 |
0.25 |
1.6 |
0.03 |
0.03 |
0.3 |
0.1 |
0.1 |
0.04 |
0.15 |
0.43 |
|
C450 |
0.2 |
0.25 |
1.7 |
0.03 |
0.03 |
0.3 |
0.35 |
0.1 |
0.04 |
0.15 |
0.43 |
|
Steel |
Minimum |
Minimum |
Minimum elongation as a propertion of the gauge length of5.65 ％ |
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|
Circular hollow sections |
Rectangular hollow sections |
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|
≦15 |
>15≦30 |
30 |
≦15 |
>15≦30 |
30 |
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|
C250,C250L0 |
250 |
320 |
18 |
20 |
22 |
14 |
16 |
18 |
|
C350,C350L0 |
350 |
430 |
16 |
18 |
20 |
12 |
14 |
16 |
|
C450,C450L0 |
450 |
500 |
12 |
14 |
16 |
10 |
12 |
14 |
|
Characteristic |
Pipe (CHS) |
Rectangular & Square (RHS / SHS) |
|
|
External dimensions (d, b, d0) |
±1% with minimum of ±0.5mm& maximum ±10% |
±1% with minimum of ±0.5mm |
|
|
Thickness (t) |
d≤406.4mm |
±10% |
±10% |
|
|
d>406.4mm |
±10% with max of ±2mm |
|
|
All Sections has a mass not less than 96% of specified nominal mass |
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