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Specifications
Hollow Section Square/Rectangular Steel Tube1.Size:15x15-800x800mm 20x30--600x800mm
2.Thick :1.0--40.0mm
Hollow Section Square/Rectangular Steel Tube
Hollow Section Square/Rectangular Steel Tube
Technical requirements: Hollow Section Square/Rectangular Steel Tube
Chemical Composition:
Yield Strength Grade |
Demotic Raw-material Grade |
235 |
Q235B, Q235C, Q235D, Q235qC, Q235qD |
345 |
Q345A, Q345B,Q345C,Q345D,Q345Qc, Q345Qd, StE355, B480GNQR |
Carbon Equivalent:
Ceq(%)=C+Mn/6+Si/24 +Ni/40+Cr/5+Mo/4+V/14
Ⅰgrade product Ceq(%)
Yield Strength Grade |
235 |
345 |
390 |
Ceq(%) |
≤0.36 |
≤0.43 |
≤0.45 |
Note: In order to improve the performance of steel,390 could add the microelement such as V, Nb, Ti, Mo and N etc. | |||
Mechanical Property:
Yield Strength Grade |
W.T |
Yield Strength |
Tensile Strength (Mpa) |
Elongation |
(20°C) Impact Value J |
(mm) |
(Mpa) |
(%) |
|||
235 |
4~12>12~22 |
≥235 |
≥375 |
≥23 |
≥27 |
345 |
4~12>12~22 |
≥345 |
≥470 |
≥21 |
≥27 |
390 |
4~12>12~22 |
≥390 |
≥490 |
≥19 |
≥27 |
Implementation of Standards Hollow Section Square/Rectangular Steel Tube
DIN EN 10210 (Europe)
Hot finished structural hollow sections of non-alloy and fine grain steels
DIN EN 10219 (Europe)
Cold formed welded structural hollow sections of non- alloy and fine grain steels
ASTM A500 (American) Cold formed structural Circular sections and special sections (welded/seamless)
GB/T 3094-2000 (China)
Cold drawn forming steel tube
GB/T 6728-2002(China)
Cold formed structural hollow sections
GB/T 178-2005(China)
Building structure with cold-formed rectangular steel
JISG 3466(Japan)
Carbon steel square pipes for general structural purposes
Technical process figure Hollow Section Square/Rectangular Steel Tube
Various Application: Hollow Section Square/Rectangular Steel Tube
Contact Information
Product Inspection: Hollow Section Square/Rectangular Steel Tube
Outside of dimentions:
Squareness of side:
Radius of corners:
Convexity or Concavity: Hollow Section Square/Rectangular Steel Tube
Finished product:
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