Hot rolled split T-shaped steel
Hot-rolled split T-section steel is a hot-rolled steel with a T-shaped cross-section, formed by splitting H-section steel. It features excellent cross-sectional characteristics, stable mechanical properties, and easy installation, making it widely used in building structures, machinery manufacturing, bridge engineering, and other fields. Its cross-section consists of a web and flange, with a reasonable ratio of flange width to web height, effectively bearing bending moments and shear forces. Its load-bearing capacity is 20%-30% higher than that of ordinary angle steel at the same weight. Specifications range from 100-600mm web height and 50-300mm flange width. The appropriate model can be selected based on project requirements, and larger cross-sections can also be assembled through welding.
The production process for hot-rolled split T-beams centers around the splitting of H-beams, requiring rolling, splitting, and finishing. First, wide-flange H-beams are produced using the same process as hot-rolled H-beams, using steel grades such as Q235B and Q355B to ensure uniform quality and stable performance. Specialized splitting equipment then splits the H-beam longitudinally along the centerline of the web, forming two symmetrical T-beams. The splitting process requires precise cutting accuracy (deviation ≤ 1mm) to avoid flange deformation. The split T-beams are straightened in a straightening machine to ensure a straightness of ≤ 1mm/m. End-surfacing and rust removal are then performed. Finally, non-destructive testing and mechanical property testing are performed to ensure product quality meets standards.
In the field of building structures, hot-rolled split T-steel is an ideal material for trusses and support systems. The roof trusses of large-span factories use T-steel as chords and webs, bolted together to form a truss structure. Adopting this solution for a steel structure factory reduced steel usage by 15% and shortened the construction period by 20 days. T-steel is used for the support framework of curtain walls in high-rise buildings. Its regular cross-section facilitates connection with embedded components. Using this material in the curtain wall system of a 30-story office building increased installation efficiency by 30%. In steel structure platforms, T-steel is used at the connection points between horizontal and longitudinal beams, distributing loads and improving the overall stability of the platform. Using this design for the operating platform of a chemical plant increased its load-bearing capacity by 25%.
Hot-rolled, split T-shaped steel has significant advantages in mechanical manufacturing and bridge engineering. The frames of large machinery are welded from T-shaped steel, whose superior rigidity ensures operational stability. Using this material in the frames of a certain CNC machine tool has improved machining accuracy to ±0.01mm. T-shaped steel is used in bridge engineering guardrail brackets, effectively resisting vehicle impacts. Using this material in the guardrail system of a cross-river bridge has increased its collision resistance to SS grade. In port machinery, crane cantilever structures utilize T-shaped steel assemblies, reducing deadweight while maintaining strength. After retrofitting a container crane at a certain port, operating efficiency increased by 10%.
With technological advancements in the steel structure industry, the performance and applications of hot-rolled split T-beams are continuously expanding. Manufacturers have developed high-strength split T-beams (Q460 and Q690) with yield strengths exceeding 460 MPa, suitable for super-high-rise buildings and heavy equipment. For low-temperature environments, low-temperature toughness T-beams have been developed, with an impact energy of ≥34J at -40°C, meeting the needs of projects in cold regions. In terms of green manufacturing, waste heat recovery technology is being used to reduce production energy consumption. Energy consumption per ton of steel produced on a T-beam production line at one steel company has been reduced by 12%. In the future, with the promotion of prefabricated buildings and modular construction, market demand for hot-rolled split T-beams will continue to grow, and its application prospects in the steel structure industry are promising.
