Structural Steel Profiles are standardized cross-sectional shapes produced from structural steel grades. They are designed to carry bending, shear, axial, and torsional loads in building frames, bridges, towers, and heavy equipment foundations. Compared with built-up sections, hot-rolled structural steel profiles offer consistent mechanical properties, predictable dimensional tolerances, and faster erection.
YS STEEL maintains a large inventory of structural steel profiles in various sizes, lengths, and steel grades. Every profile is supplied with mill test certificates and optional third-party inspection. This documentation helps engineers verify yield strength, tensile strength, elongation, and impact properties before fabrication.
The structural steel family includes several standardized shapes. Each profile has a specific load-bearing behaviour and connection method. The most common types supplied by YS STEEL are listed below.
Steel profiles are produced in a wide range of sizes. The table below shows the typical height, width, and weight ranges for sections supplied by YS STEEL. Custom lengths from 6 m to 18 m are available, and cut-to-length services can be arranged.
| Profile Type | Standard Designation | Typical Size Range | Weight Range | Common Applications |
|---|---|---|---|---|
| H-Beam | HEA, HEB, HEM, HW, HM, HN | 100 mm x 100 mm to 1000 mm x 400 mm | 16.7 kg/m to 416 kg/m | High-rise columns, bridge girders, heavy frames |
| I-Beam | IPE, IPN | 80 mm to 750 mm height | 6.0 kg/m to 224 kg/m | Floor beams, monorails, crane runways |
| Channel | UPN, UPE, C | 50 mm to 400 mm height | 5.6 kg/m to 104 kg/m | Bracing, side rails, purlins, built-up sections |
| Equal Angle | L | 20 mm x 20 mm x 3 mm to 250 mm x 250 mm x 35 mm | 0.88 kg/m to 128 kg/m | Trusses, connections, lintels, supports |
| Unequal Angle | L | 30 mm x 20 mm x 3 mm to 200 mm x 150 mm x 18 mm | 1.12 kg/m to 46.1 kg/m | Brackets, frames, stiffeners |
| Square Hollow Section | SHS | 20 mm x 20 mm x 2 mm to 400 mm x 400 mm x 20 mm | 1.05 kg/m to 238 kg/m | Columns, architectural frames, machine bases |
| Rectangular Hollow Section | RHS | 50 mm x 25 mm x 2.5 mm to 500 mm x 300 mm x 20 mm | 2.72 kg/m to 239 kg/m | Portal frames, trusses, structural beams |
| Circular Hollow Section | CHS | 21.3 mm OD x 2.0 mm to 610 mm OD x 20 mm | 0.95 kg/m to 291 kg/m | Piles, columns, handrails, space frames |
YS STEEL supplies structural steel profiles in carbon steel, high-strength low-alloy steel, and weathering steel. The choice of grade depends on loading, temperature, corrosion environment, and weldability requirements. The table below summarizes common grades and their mechanical properties.
| Steel Grade | Standard | Min. Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Test |
|---|---|---|---|---|---|
| A36 | ASTM | 250 | 400 – 550 | ≥20 | Optional |
| A572 Gr.50 | ASTM | 345 | 450 – 650 | ≥18 | Optional |
| A992 | ASTM | 345 – 450 | ≥450 | ≥18 | Optional |
| S235JR | EN 10025-2 | 235 | 360 – 510 | ≥24 | 20°C / 27J |
| S275JR | EN 10025-2 | 275 | 410 – 560 | ≥21 | 20°C / 27J |
| S355J2 | EN 10025-2 | 355 | 470 – 630 | ≥20 | -20°C / 27J |
| SS400 | JIS G3101 | 245 | 400 – 510 | ≥17 | Optional |
| SM490A | JIS G3106 | 325 | 490 – 610 | ≥17 | Optional |
| Q235B | GB/T 700 | 235 | 370 – 500 | ≥26 | 20°C / 27J |
| Q355B | GB/T 1591 | 355 | 470 – 630 | ≥20 | 20°C / 34J |
Different markets use different dimensional and material standards. The table below shows common standards that apply to hot-rolled sections.
| Region / Standard Body | Main Standards | Typical Grades | Product Range Covered |
|---|---|---|---|
| United States / ASTM | ASTM A6/A6M, A36/A36M, A572/A572M, A992/A992M | A36, A572 Gr.50, A992 | Wide flange, I-beams, channels, angles, sheet piling |
| Europe / CEN | EN 10025-2, EN 10034, EN 10210-2, EN 10219-2 | S235JR, S275JR, S355J2 | IPN, IPE, HEA/HEB/HEM, UPN/UPE, hollow sections |
| Japan / JIS | JIS G3101, JIS G3106, JIS G3192 | SS400, SM490A | H-beams, I-beams, channels, angles, sheet piles |
| China / GB | GB/T 706, GB/T 11263, GB/T 1591 | Q235B, Q355B | Hot-rolled H-beams, I-beams, channels, angles |
| International / ISO | ISO 657 series | Fe 360, Fe 510 | Hot-rolled steel sections |
Dimensional accuracy affects fit-up, welding time, and structural performance. YS STEEL follows the tolerance limits defined by ASTM A6/A6M, EN 10034, EN 10210-2, and GB/T 706. The main tolerance parameters are listed below.
Steel profiles can be supplied in the following surface conditions:
These profiles serve a wide range of structural and architectural purposes. YS STEEL has supplied sections for projects in the following sectors:
When preparing a material requisition, engineers should include the following parameters:
YS STEEL supplies structural steel profiles with reliable lead times and full traceability. Each shipment includes heat number identification, mill test certificates, and dimensional inspection reports. The company can provide cut-to-length sections, drilled or coped ends, and custom packing for containerized export. With multi-standard inventory covering ASTM, EN, JIS, and GB specifications, YS STEEL helps clients consolidate procurement and reduce supply-chain risk.
Q: What is the difference between an H-beam and an I-beam?
A: H-beams have wider flanges and a thicker web compared with I-beams of the same height. The flange surfaces of H-beams are nearly parallel, which makes bolted connections easier. I-beams have tapered flanges and are more efficient for bending in one direction, but they have lower lateral torsional buckling resistance. H-beams are commonly used as columns and combined axial-bending members, while I-beams are often selected for simply supported beams and crane girders. YS STEEL supplies both types with detailed section property tables for comparison.
Q: Which steel grade should be used for seismic-resistant structures?
A: For seismic applications, engineers usually select grades with a specified yield strength between 345 MPa and 450 MPa, such as ASTM A992, A572 Gr.50, S355J2, or Q355B. These grades offer a balanced yield-to-tensile ratio and good ductility. A992 is specifically designed for wide-flange sections used in building frames and has a maximum yield-to-tensile ratio of 0.85. For welded moment connections in seismic zones, toughness and through-thickness properties may also be specified. YS STEEL can supply profiles with Charpy impact testing at -20°C or -40°C when required.
Q: Can YS STEEL provide custom cutting, drilling, and end preparation?
A: Yes. YS STEEL offers value-added processing including cut-to-length, mitre cutting, drilling, notching, coping, and weld preparation. The processing facilities can handle H-beams up to 1000 mm in height and hollow sections up to 610 mm in diameter. Custom end-plate preparation and cambering can also be arranged for specific projects. Fabrication drawings and tolerance reports are provided before dispatch.
Q: What documentation is supplied with structural steel profiles?
A: Each order from YS STEEL includes the mill test certificate, which records the heat number, chemical composition, mechanical test results, and standard compliance. Additional documents such as EN 10204 3.1 or 3.2 certificates, dimensional inspection reports, and third-party inspection releases are available on request. For export orders, packing lists, bills of lading, and certificate of origin are prepared according to the destination country’s requirements.
Q: How are structural steel profiles priced and what affects the unit cost?
A: The unit price is usually based on theoretical weight per meter multiplied by the grade-specific base price. Factors that influence cost include the selected steel grade, profile type, section size, quantity, length tolerance, surface treatment, and delivery terms. Market prices for steel billet and scrap also affect the final quotation. YS STEEL provides transparent quotations with a breakdown of material, processing, and freight costs. For containerized orders, optimal nesting and bundle planning help reduce shipping expense.
