Standard: GB/T8162-1999, ASTM A53, ASTM A106, ASTM A500-98, ASTM
A501-98, ASTM A519-98, JIS G3441-1994, JIS G3444-1994, BS EN
10210-1
Application: Used in the general structure and the mechanism,
including construction, machinery, transportation, aviation,
petroleum mining and each kind of structural tubes
Chemical composition and mechanical properties
Standard |
Grade |
Chemical
composition(%) |
Mechanical
properties |
||||||
C |
Si |
Mn |
P | S |
Tensile
Strength(Mpa) |
Yield
Strength(Mpa) |
Elongation(%) |
||
DN1629 |
St37 |
≤0.17 |
- | - |
≤0.04 |
≤0.04 |
350-480 |
≥235 |
≥25 |
St44 |
≤0.21 |
- | - |
≤0.04 |
≤0.04 |
420-550 |
≥275 |
≥21 |
|
St52 |
≤0.22 |
≤0.55 |
≤1.60 |
≤0.04 |
≤0.035 |
500-650 |
≥355 |
≥21 |
In structural engineering, the tube is the system where in order to
resist lateral loads (wind, seismic, etc.) a building is designed
to act like a hollow cylinder, cantilevered perpendicular to the
ground.
The system can be constructed using steel, concrete, or composite
construction (the discrete use of both steel and concrete). It can
be used for office, apartment and mixed-use buildings. Most
buildings in excess of 40 stories constructed since the 1960s are
of this structural type.
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