Steel |
Chemical composition( cast or product analysis % max. |
||||||||||
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 |