European HEM (European Wide Flange, Heavy) H-beams are the direct equivalents of GB HW heavy-duty H-beams, designed for ultra-heavy loads like industrial cranes, large-span bridges, and high-rise columns. Key comparisons include:
Dimensional Alignment:
HEM 300 vs. HW 300x300 (heavy): Depth 300 mm, flange width 300 mm, web thickness 16 mm (HEM 300) vs. 16 mm (HW 300x300), flange thickness 22 mm (HEM 300) vs. 21.5 mm (HW 300x300). Weight per meter: 133 kg/m (HEM 300) vs. 132 kg/m (HW 300x300)-negligible difference.
HEM 400 vs. HW 400x400 (heavy): Depth 400 mm, flange width 400 mm, web thickness 18 mm (HEM 400) vs. 18 mm (HW 400x400), flange thickness 28 mm (HEM 400) vs. 27.5 mm (HW 400x400). Weight per meter: 199 kg/m (HEM 400) vs. 198 kg/m (HW 400x400).
Mechanical Performance:HEM beams use S355JR/S355J2 steel (355 MPa yield strength), identical to HW heavy-duty grades (Q355B/Q355C). Their thicker webs and flanges (vs. HEB/standard HW) provide higher shear capacity and bending moment, making them suitable for loads exceeding 100 kN/m (e.g., crane girders in Chinese manufacturing plants).
Application Compatibility:HEM beams meet EN 10210-1's strict tolerances for heavy sections, ensuring they fit GB-compatible heavy-duty connections (e.g., high-strength bolts per GB/T 1228). This makes HEM beams ideal for substituting HW heavy-duty grades in projects where maximum strength and durability are critical.