| Product Name | column i beam |
| Width | According to customer's requirement |
| Thickness | According to customer's requirement |
| Length | According to customer's requirement |
| Technique | Hot rolled / welding |
| Advantages | 1.low foundation cost2.easy construction3.time and labor saving |
| Grade | A36/S235JR/S235/S355JR/S355, SS440/SM400A/SM400B, Q195,Q215,Q235B,Q345B, ETC |
| Product Application | 1.Building and Infrastructure: Main beams and columns in skyscrapers, industrial buildings, bridges, and mezzanines.
2.Heavy Equipment: Frames for trucks, cranes, and heavy machinery.
3.Residential Construction: Often used as the main support beam in basements or over large openings. |
Select the appropriate grade:
For standard columns: S355JR/J2 (EN) / Q355B/C (GB) / A992 (ASTM) are the safest, most economical, and versatile first choice.
For seismic critical columns: Consider SN series (JIS) or, if required, higher toughness grades such as S355J2/K2 (EN).
For heavy/extra-heavy columns: Consider higher strength grades such as S460 (EN) / Q460 (GB).
For exposed decorative columns: Consider A500 HSS (ASTM) or weathering steel.
Core international brands used for columns.
| Standard System | Common Grades (For Columns) | Key Characteristics as Columns | Typical Column Applications |
| European (EN) | S355JR / J0 / J2 | The most mainstream choice. High yield strength (≥355 MPa) effectively withstands axial compression. Wide-flange H-sections (HEA/HEB) have a large moment of inertia, offering strong resistance to buckling. Excellent weldability facilitates beam-column connections. | Factory building frame columns, high-rise building structural columns, industrial platform support columns. |
| S460ML / S460QL | Ultra-high strength (yield ≥460 MPa). Used for columns that require significantly reduced cross-sectional dimensions or must withstand extreme loads, such as in heavy industrial plants and special structures. | Heavy-duty factory columns, crane runway columns, large equipment support columns. |
| American (ASTM/AISC) | A992 | The preferred grade for structural building columns. Yield strength 50 ksi (~345 MPa). Balanced properties with strict limits on the yield-to-tensile strength ratio, ensuring good ductility and seismic performance. | Frame columns and support columns for commercial and residential buildings. |
| A572 Gr.50 | High-strength low-alloy steel, with performance close to A992. Commonly used in heavy structures. Cost-effective, often an alternative to A992. | Industrial building columns, bridge piers, transmission tower legs. |
| A500 Gr.C | Hollow Structural Sections (HSS) – round, rectangular, or square. Often used for concrete-filled tube (CFT) columns or pure steel columns. Yield strength 50 ksi. Closed sections offer good isotropic properties, high efficiency in compression and torsion, and a clean aesthetic. | Exposed architectural columns in modern buildings, compression members in space trusses, lightweight frame columns. |
| Japanese (JIS) | SM490YA / YB | Rolled steels for building structure, with tensile strength ≥490 MPa. Grades A/B are suitable for general column structures, offering good weldability. | Frame columns for ordinary to medium-load buildings. |
| SN400B / C, SN490B / C | Seismic-resistant steel for buildings. Strictly regulated yield ratio, elongation, and toughness ensure columns possess excellent ductility and energy dissipation capacity during earthquakes, preventing brittle failure. | Frame columns (especially in beam-column connection zones) in high seismic regions. |
Main brand chemical composition
| Grade / Standard | C (≤%) | Mn (≤%) | Si (≤%) | P (≤%) | S (≤%) | Other Elements (Typical) |
| A36 | 0.26 | 0.9 | 0.4 | 0.04 | 0.05 | Cu ≥ 0.20 (min)*(*For shapes > 426 kg/m) |
|
| A992 | 0.23 | 0.50-1.50 | 0.4 | 0.035 | 0.045 | Cu ≥ 0.20 (min),V ≤ 0.11, Cb ≤ 0.06 |
|
| S355JR | 0.24 | 1.6 | 0.55 | 0.045 | 0.045 | Cu ≤ 0.55, N ≤ 0.014 |
|
| S355J2 | 0.24 | 1.6 | 0.55 | 0.035 | 0.035 | Cu ≤ 0.55, N ≤ 0.014 |
|
| Q355B | 0.24 | 1.6 | 0.55 | 0.035 | 0.035 | Cr ≤ 0.30, Ni ≤ 0.50,Cu ≤ 0.40 |
|
| SM490YA | 0.2 | 1.6 | 0.55 | 0.035 | 0.035 | Cu ≤ 0.55 |
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