Compared with large-section heavy-duty profiles such as H-shaped steel and I-shaped steel, Shixinda's high-quality T Beam eliminates redundant cross-sectional designs, has a clear and concentrated force transmission path, and has more targeted bending and shear resistance performance. It effectively avoids the problems of large joint gaps, uneven force distribution, and easy deformation in traditional combined steel types.
The T-shaped steel formed by hot-rolled integration has no secondary welding stress, and the overall structural integrity is high; the split T-shaped steel relies on mature mother material processing, with regular sections and uniform dimensions. Both processes can ensure the straightness and assembly accuracy of the profiles, and are suitable for standardized modular construction.
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Specification Category |
Technical Parameters & Indicators |
Application Description |
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Material Grade |
Carbon Steel: Q235B, Q355B, Q420B high-strength steel; Stainless Steel: 304 / 316; Weathering Low Alloy Steel |
Carbon steel for factory buildings, steel structures and general load-bearing supports; Stainless steel for highly corrosive outdoor and chemical environments; Weathering steel for outdoor landscapes and exposed bridge components |
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Dimension Specifications |
Section marking rule: Height H × Flange Width B × Web Thickness t₁ × Flange Thickness t₂; Conventional section range: H 25mm~400mm, B 25mm~300mm; Wall thickness range: web 3mm~20mm, flange 4mm~25mm; Standard fixed lengths: 6m/9m/12m, custom non-standard lengths available |
Small size (H ≤ 100mm): precision machinery parts, elevator guide rails, small embedded parts; Medium size (H100-200mm): curtain wall keels, PV brackets, secondary steel beams; Large size (H ≥ 200mm): main factory beams, bridge components, heavy-duty platforms |
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Dimensional Accuracy |
Tolerance of section height / flange width ≤ ±2.0mm; Tolerance of web / flange thickness ≤ ±0.5~1.0mm; Straightness deviation ≤1.5mm/m; Flange verticality ≤ B/100; End cut skew deviation ≤3mm |
Meets requirements for on-site steel structure splicing, bolt connection and welding assembly, applicable to conventional projects including building main structures, bridges and PV supports; High-precision customized versions fit rail transit and precision machinery slide rail applications |
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Mechanical Properties |
Q235B: Yield strength ≥235MPa, tensile strength 375~500MPa, elongation ≥25%; Q355B: Yield strength ≥355MPa, tensile strength 470~630MPa, elongation ≥21%; Q420B: Yield strength ≥420MPa, tensile strength 500~680MPa, elongation ≥18%; 304 stainless steel: Yield strength ≥205MPa, tensile strength ≥520MPa, elongation ≥40% |
Higher strength suits long-span and heavy-load steel structures to realize lightweight design; Low alloy high-strength steel for core load-bearing components such as factory main beams and bridges; Ordinary carbon steel for secondary load-bearing components including general supports and curtain walls |
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Surface Treatment |
Hot rolled black blank, shot blasting derusting, hot-dip galvanizing (zinc layer thickness ≥85μm), cold galvanizing, epoxy zinc-rich paint coating, fluorocarbon coating, pickling & passivation |
Hot-dip galvanizing for humid outdoor projects like PV brackets and municipal works; Epoxy zinc-rich / fluorocarbon coating for building curtain walls and decorative steel structures; Shot blasting derusting for indoor welded components and pre-coating treatment; Stainless steel pickling passivation for chemical and coastal high-corrosion environments |
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Machinability |
Cold bending: No cracks or delamination after 180°C room-temperature cold bending test (Q235/Q355 series); Welding: Compatible with arc welding, submerged arc welding and gas shielded welding; joint strength ≥90% of base metal without hardening embrittlement; Punching & drilling: CNC punching/drilling available, hole tolerance ±0.2mm without edge chipping or cracking; Cutting: Flame cutting, plasma cutting and saw cutting supported with smooth burr-free, distortion-free cuts; Bending: Custom cold bending forming, bending radius ≥2 times wall thickness without cracks |
Cold bending for light steel villas and decorative steel components; Welding for factory main beams and heavy steel frames; Punching & drilling for bolt-connected PV brackets and curtain wall keels; Precision cutting for machinery fittings and embedded engineering parts; Bending for special-shaped steel structures and decorative profiles |
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Executive Standards |
Core national standard: GB/T 11263-2017 Hot Rolled H-beams and Split T-beams; Supporting material standards: GB/T 700-2006 Carbon Structural Steel, GB/T 1591-2018 High Strength Low Alloy Structural Steel; Anti-corrosion standard: GB/T 13912-2020 Technical Requirements for Hot-dip Galvanized Coatings; Acceptance standard: GB/T 50205-2020 Code for Acceptance of Construction Quality of Steel Structures; Optional foreign trade standards: EN 10025 (European Standard), JIS G3101 (Japanese Standard) |
GB/T 11263-2017 is mandatory for domestic construction, steel structure and PV projects; European / Japanese standards are available for overseas export orders; Bridge, chemical and other special industries shall comply with corresponding industrial acceptance codes additionally |
Bending Resistance and Load-bearing: The web plate bears the vertical bending moment and serves as the secondary beam of the roof, the small beam of the platform, and the main beam of the canopy. Its section has high bending resistance efficiency;
Compression Stability: The flange enhances the lateral stiffness. It is used as the column of the curtain wall, the support column of the photovoltaic panel, and the small load-bearing column. It is less likely to tip over or lose stability;
Lateral Anchoring Support: As the column-to-column support and the horizontal support of the roof, it restrains the lateral displacement of the frame and enhances the seismic stability of the overall structure.
Material Saving and Lightweight: Compared with double angle steel with the same load-bearing capacity, it saves 25% to 35% of steel, reducing the overall load of the building and the cost of the foundation;
Simplified Assembly: The single-sided flange is convenient for bolt drilling and bevel welding. There is no need to splice two angle steel, significantly reducing the amount of welds and bolts, and shortening the on-site construction period;
Universal Compatibility: Standardized off-the-shelf specifications cover multiple industries such as construction, photovoltaics, municipal works, and machinery. Non-standard welding models can meet special requirements for heavy loads and large cross-sections.
1. The cross-sectional force distribution is scientifically designed, providing stable resistance to bending and compression. Compared to double angle steel, it saves 25%-35% of steel for the same load-bearing capacity.
2. It is formed as a single piece without any joints, reducing welds and bolts, thereby increasing construction efficiency by 30%.
3. The entire series is standardized and has sufficient in-stock availability. Customized welding non-standard specifications are also available.
4. Excellent processing performance, allowing for cutting, welding, punching, and bending.
5. Compatible with various anti-corrosion processes, providing long-term durability outdoors.
6. Can be used for multiple purposes, such as columns, beams, and support ribs, with strong versatility.
7. Meets dimensional accuracy standards, ensuring no gaps during assembly, and suitable for prefabrication and high-precision photovoltaic applications.
1. Secondary columns of steel frames, combined secondary beams of floor slabs (TM type I-shaped steel);
2. Prefabricated exterior wall connection framework, cantilevered small beams of balconies;
3. Light steel-concrete composite energy dissipation and vibration reduction columns (TW wide-wing T-shaped steel as the steel core stiffening column).
Taizhou Ershiqi Metallurgical Group's Fully Prefabricated Steel Structure Research and Development Building. The entire building's main structure was completed in just 20 days. All floor beams and vertical supports of the exterior walls were made of Q355B TM series I-shaped steel; all components were prefabricated in the factory and sprayed with sandblasting and paint, and only bolts were used for on-site assembly. The construction waste was reduced by 70%, making it a benchmark project of rapid prefabricated steel structure in China.
1. Main beams of steel stairs treads, load-bearing beams of rest platforms (TM type I-shaped steel);
2. Narrow-wing T-shaped steel secondary beams of factory buildings and shopping malls' indoor mezzanines;
3. Support frames for equipment rooms and roof maintenance walkways.
Interior mezzanine renovation of Tianjin Binhai New Area Storage Complex. After the original concrete floor was removed, a steel structure mezzanine was added. TN100×200 T-shaped steel was selected as the floor secondary beams, which were lightweight and did not require reinforcement of the original frame columns. The entire floor mezzanine was completed in just 7 days.
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S213 Jinghai District, Tianjin City, China
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