Steel I &U Beam
Steel I Beam and U Beam are hot-rolled structural sections with I-shaped and U-shaped cross-sections separately. Optimized for bending and load-bearing capacity. Available in multiple grades and surface finishes, they support welding, cutting and drilling. Widely used as primary load-bearing components for factories, bridges, machinery bases, municipal engineering and mining support systems.
Available Grades
Q235B
Universal mild carbon grade for both I & U beams with balanced strength and great weldability. Suitable for general warehouses, light workshop frames and low-load auxiliary structural supports under normal temperature.
Q355B
Low-alloy high-strength material with higher yield strength than Q235B. Enables lightweight design for large-span buildings, heavy crane tracks and mine U-shaped support frames to reduce overall structural weight.
A36
ASTM standard carbon structural steel favored by North American buyers. Delivers stable mechanical performance for overseas bridge projects, factory main beams and mechanical load-bearing bases.
S235JR
EU standard grade with guaranteed room-temperature impact resistance. Ideal for European prefabricated buildings, transport equipment frames and medium-load I & U beam structural assemblies.
Product Features
- Distinct cross-section advantages: I Beam excels at anti-bending for horizontal girders; U Beam provides strong lateral rigidity for vertical supports and chute frames.
- Precise hot-rolled dimensional tolerance and flat surface, ensuring seamless bolted and welded connection during on-site assembly.
- Outstanding comprehensive processability, compatible with saw cutting, flame cutting, drilling and all mainstream welding technologies.
- Complete size spectrum covering light small sections to heavy large beams, matching light-duty and heavy-load engineering scenarios.
- Stable internal metallurgical grain structure, excellent anti-fatigue performance for long-term repeated dynamic loads like cranes and mine vibration.
- Multiple surface solutions: raw hot-rolled, pickled and hot-dip galvanized to meet indoor, outdoor and coastal anti-corrosion demands.
Applications
- Industrial Factory ConstructionI Beams act as main roof girders and crane runway beams; U Beams serve wall supports and equipment base frames for warehouses and manufacturing plants.
- Bridge & Municipal Transportation EngineeringI Beams fabricate bridge main girders and overpass load-bearing beams; U Beams make guardrail brackets, sound barrier supports and tunnel secondary frames.
- Mining & Tunnel Support SystemSpecial thick U Beams bear underground rock pressure as roadway support arches; I Beams build ground mine workshop load-bearing frames.
- Heavy Machinery & Equipment ManufacturingBoth sections produce large machine tool bases, hydraulic equipment supports and mining vehicle chassis frames enduring heavy static pressure.
- Prefab & Port Logistics FacilitiesI & U Beams construct modular house skeletons, dock loading platform girders and freight yard partition support structures.
Product Advantages
- Two section types supplied together in one-stop procurement, reducing your supplier management and order coordination costs.
- High structural efficiency: Lighter than solid steel under equal load, cutting raw material expenditure and ocean transport weight fees.
- Custom deep processing service: fixed-length cutting, hole punching and galvanization to eliminate extra third-party processing charges.
- Strict batch mechanical testing with complete Mill Test Certificates, lowering structural failure risks during construction.
- Mass stock of standard I & U Beam sizes enables fast delivery to shorten your project construction cycle.
Technical Data Table (Typical Mechanical Properties)
| Parameter Unit | Q235B | Q355B | A36 | S235JR |
| Tensile Strength (MPa) | 360–480 | 470–630 | 400–550 | 360–480 |
| Yield Strength (MPa) | ≥235 | ≥355 | ≥250 | ≥235 |
| Elongation (%) | ≥25 | ≥22 | ≥21 | ≥25 |
| Density (g/cm³) | 7.85 | 7.85 | 7.85 | 7.85 |
| Standard Impact Test | Room Temp | Room Temp | Ambient | +20℃ |
Why Choose Us
- 30+ years integrated I & U Beam export manufacturer, abundant ready stock of mainstream specifications for quick shipment.
- Full hot rolling production lines, precisely control straightness, flange thickness and section dimensional accuracy for both beam types.
- Independent QC laboratory conducts tensile, impact and dimensional sampling inspection for every batch before delivery.
- Flexible order policy: Accept full-container bulk orders and small trial lots for project sample verification.
- Customized processing: Cut-to-length, bolt hole punching and anti-rust galvanization per your construction drawings.
- Professional global logistics team, familiar with FOB, CFR, CIF, DDP terms for ports across Europe, Middle East, Southeast Asia and Africa.
Packaging & Shipping
Packaging
- I Beams and U Beams bundled separately with high-tensile steel straps; rubber end caps fitted to prevent flange deformation and surface scratches.
- Wrapped with thick waterproof woven tarpaulin; desiccants added inside bundles to resist salt fog moisture during long sea transport.
- Clear shipping marks, grade, model, length and weight labels printed on each bundle for fast identification.
Shipping
- Container transport: 20GP / 40HQ containers, beams fixed by steel brackets to avoid shifting in transit.
- Bulk vessel delivery available for super large mine and bridge construction orders to save total ocean freight cost.
- Main loading ports: Shanghai, Ningbo, Qingdao, Tianjin; all mainstream international trade terms are negotiable.
FAQ
- Q1: What size range of Steel I & U Beams can you supply?
A: Standard I Beams range from I10 to I63, U Beams cover 5# to 40#. Non-standard sizes and custom lengths are available based on your drawings. - Q2: Can you provide cutting and punching processing service?
A: Yes, fixed-length saw cutting and customized bolt hole punching are supported. Send your technical drawings for accurate quotation. - Q3: What surface treatment options do you offer?
A: Raw hot rolled black finish, pickling cleaning and hot-dip galvanized I & U Beams are available for indoor, outdoor and coastal corrosive environments. - Q4: How long is your production and delivery lead time?
A: please check with our sales team. - Q5: Are galvanized I & U Beams suitable for seaside mining projects?
A: Hot-dip galvanized beams have strong salt spray corrosion resistance, perfectly matching humid, salt-laden coastal and underground mining working conditions.
