Hot Rolled Steel I Beam for Bridge Construction Heavy Structure Support

Neither is absolutely better; it depends on the application. H-beams have parallel flanges, greater lateral stiffness, and more economical sections, suitable for long-span and heavy-load columns and beams. I-beams have tapered flanges and lower prices, suitable for medium-small span beams and secondary beams. Choose I-beam for budget-conscious, moderate-load projects; H-beam for long-span, high-requirement projects.

The size number represents section height in mm, e.g., #10 means 100mm height, #20 means 200mm height. Same size has a, b, c variants with different flange width and web thickness (e.g., 20a, 20b, 20c). Type b has 2mm thicker web and 2mm wider flange than type a, with higher load capacity.

Yes. Hot-dip galvanizing provides 20-30 years of corrosion protection, suitable for outdoor and corrosive environments. However, galvanizing may cause slight deformation (especially for slender sizes), requiring post-galvanizing straightening. All cutting and drilling must be completed before galvanizing to avoid damaging the zinc layer.

Standard cut lengths are 6m, 9m, 12m; special cuts up to 15m (transportation limited). Random lengths are typically 6-12m. We offer value-added services including cutting, drilling, and end-plate welding per drawings.

Standard stock: MOQ 1 tonne, ships in 3-7 days. Custom cut and special sizes: MOQ 3 tonnes, 7-15 days lead time. Backed by steel cluster stock resources, standard sizes available for same-day pickup.