UB 356x171x45 356x171x51 S355JR Universal Structural Beam
UB 356x171x45 h beam structure: UB stands for the British standard Universal Beam, 356mm is the section height, 171mm is the flange width, and 45kg/m is the theoretical weight.
UB 356x171x51 h shaped steel: Section height 356mm, flange width 171mm, theoretical weight 51kg/m.
UB 356x171x45 Universal Steel Beam
Section height: 356mm
Flange width: 171mm
Web thickness: 8.0~10.0mm
Flange thickness: 12.0~14.0mm
Theoretical weight: 45kg/m
UB 356x171x51 Steel Universal Beam
Section height: 356mm
Flange width: 171mm
Web thickness: 10.0~12.0mm
Flange thickness: 14.0~16.0mm
Theoretical weight: 51kg/m
UB Sectional Characteristics
Aspect Ratio Optimization: The H-shaped structure provides high bending resistance and is suitable for heavy load and high stability requirements.
Carrying capacity: The UB 356x171x51 structural steel h beam has a slightly higher carrying capacity than the UB 356x171x45 steel h column due to its thicker web and flange.
S355JR chemical composition: carbon (C) ≤ 0.24%, manganese (Mn) ≤ 1.6%, phosphorus (P) ≤ 0.035%, sulfur (S) ≤ 0.035%.
S355JR h beam material mechanical properties Yield strength: ≥ 355MPa (thickness ≤ 40mm).
Tensile strength: 470~630MPa (meet EN standards).
Impact toughness: impact energy ≥ 27J at room temperature (20℃), suitable for general dynamic loads and impact environments.
UB Steel application areas
Construction engineering : UB 356x171x45 h type beam: industrial plant support beams, non-extreme heavy load platforms.
UB 356x171x51 h type steel beam: high-rise building frames, load-bearing structures in earthquake zones.
Bridges and heavy machinery: Suitable for bridge main beams and heavy equipment brackets (such as port cranes).
Marine engineering: UB 356x171x51 h shaped beam is used for offshore platform support structures and is resistant to salt spray corrosion (surface treatment is required).
UB356x171x51 h beam section: Need to withstand extreme loads or marine environments (such as petrochemical equipment and cross-sea bridges).
UB356x171x45 steel h profile: General scenarios such as conventional industrial plants and non-cryogenic bridges.
