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Structural Steel Pipe is a welded steel pipe with an internal weld seam that is measured in nominal size unlike welded round tube. Structural steel is steel construction material, a profile, formed with a specific shape and certain standards of chemical composition and strength. Structural steel pipes has been engaged in steel fencing, handrails, columns, stove pipes, exhaust pipes, chimney pipes & poles.
Standard :
ASTM A500 Grade B, ASTM A53 Gr B, Type E, ASTM A53, ASTM A106B, ASTM A519, ASTM A500 GrB, ASTM A500 GrC, ASTM A500-98, ASTM A501-98, ASTM A519-98, JIS G3441-1994, JIS G3444-1994,etc.Material :
EN 10219, ASTM A513,ASTM A36 S235JR,ASTM A53,etc.Thickness :
1/5-1 Inch, 0.236-1.378 Inch, 6-35mm or as requested.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.