HE900B European standard H-beam 900*300*18.5*35 standard allowable deviation
Basic technical parameters of structural steel beam
Specification mark: 900×300×18.5×35 beam steel structure (web height×flange width×web thickness×flange thickness).
Theoretical weight: 291kg/m (calculated according to EN 10034 standard).
Manufacturing standard: EN 10034-1993, with supporting materials such as S355JR h beam structure, S355J2 h section beam, S355NL structural h beam and other high-strength steel grades.
h beam dimension tolerance
Web height ±5mm | Flange width ±4mm
Web thickness ±1.5mm | Flange thickness ±2.5mm
Structural characteristics and advantages of steel h beam
The combination of 900mm web height and 35mm flange thickness achieves a section moment of inertia of 1,150,000cm⁴, significantly improving bending stiffness.
18.5mm web thickness optimizes shear resistance, and 30mm fillet radius reduces stress concentration risk.
h section steel material properties
S355 series steel has a yield strength of ≥355MPa, a tensile strength of 470-630MPa, and an elongation of ≥22% (S355J2 grade).
The material is suitable for welding/cutting processes and supports standard processing methods such as CO₂ gas shielded welding.
h shaped steel selection and construction points
Load adaptation: It is necessary to verify the working conditions of axial pressure ≥8000kN and bending moment ≥6000kN·m.
Anti-corrosion measures: It is recommended to use S355J2+N material for marine environment, with epoxy zinc-rich coating (film thickness ≥120μm).
Welding specifications: Preheating temperature ≥120℃ (when plate thickness >35mm), interlayer temperature controlled at 200-250℃.
