Explore our diverse selection of structural components and specialized materials engineered for reliability across critical global applications.
Leveraging structural geometric efficiency for superior torsional rigidity, load management, and lightweight structural frameworks.
Rectangular Hollow Sections (RHS), also colloquially referred to as rectangular steel tubes or box sections, represent the peak of geometric efficiency in structural steel engineering. In modern construction, mechanical engineering, and heavy infrastructure development, structural profiles are continuously subjected to multi-directional bending moments, compression, and intense torsional stresses. The hollow, symmetrical distribution of mass in RHS positions the structural steel furthest from the neutral axis, yielding an exceptionally high second moment of area (I) and radius of gyration (r) relative to its unit weight.
Unlike traditional open profiles such as I-beams, wide-flange columns, or channels, RHS provides balanced resistance to structural loads in both lateral and longitudinal planes. Its flat exterior surfaces simplify joinery, cross-bracing, and welding interfaces. This flat profile dramatically reduces fabrication costs and ensures maximum structural connection integrity—critical parameters in high-stress applications such as bridge framing, portal structures, and high-rise core columns.
Our high-precision cold-forming and high-frequency induction welding capabilities ensure full compliance with international standards.
We manufacture customized outer dimensions ranging from 20x30mm up to massive 400x600mm structural columns. Wall thicknesses are engineered from 1.2mm up to 20mm, maintaining tight tolerances within ±0.2mm through computerized sizing stands.
Our production conforms perfectly to global benchmarks: ASTM A500 (Grades A, B, C), EN 10219/EN 10210 (S235JR, S355JR, S355J2H), JIS G3466, and AS/NZS 1163 (C250L0, C350L0, C450L0) for structural integrity in seismic and low-temperature zones.
Options include light oiling, black paint coatings, pre-galvanization, hot-dip galvanization (minimum coating mass 300g/m² up to 610g/m² for sub-sea exposure), and high-performance Zinc-Aluminum-Magnesium (ZAM) structural barriers.
| Dimension Range (mm) | Wall Thickness (mm) | Material Grades | Standard Conformity | Key Mechanical Properties |
|---|---|---|---|---|
| 30 x 20 to 100 x 50 | 1.2 to 6.0 | Q235B, S235JR, Grade A/B | ASTM A500, EN 10219, GB/T 6728 | Yield Strength ≥ 235 MPa, Elongation ≥ 23% |
| 120 x 80 to 250 x 150 | 4.0 to 12.0 | Q355B, S355JR, C350L0 | EN 10219, AS/NZS 1163, JIS G3466 | Yield Strength ≥ 355 MPa, Impact Energy ≥ 27J at 0°C |
| 300 x 200 to 600 x 400 | 6.0 to 20.0 | S355J2H, S460QL, C450L0 | EN 10210, AS/NZS 1163, ASTM A500 Gr. C | Yield Strength ≥ 450 MPa, Impact Energy ≥ 27J at -20°C |
Why our location at the epicenter of global steel production yields uncompromised efficiency, logistics optimization, and value.
Located in Tangshan City, Hebei Province, we operate within the most integrated metallurgical cluster globally. This eliminates internal transshipment overheads for hot-rolled coil feedstock and gives us direct access to high-grade raw steel.
Our proximity (just 150 km) to Tianjin Port (one of the largest deep-water ports in northern China) enables streamlined dispatch, direct loading options, and reduced port-to-port maritime freight rates for containers or break-bulk shipments.
With 8 dedicated automated sizing and welding mills producing up to 300,000 metric tons annually, our manufacturing lines deliver significant structural cost benefits and handle large-volume orders on tight schedules.
Delivering high-tensile hollow structural profiles to meet challenging global operating requirements.
Our custom rectangular sections provide the foundational column strength for modern, long-span buildings like airports, high-speed rail stations, and stadium canopies. Their high structural performance resists wind loads and seismic moments.
High-frequency welded RHS is essential for complex machinery frames, cranes, material handling systems, and agricultural structures. Its torsional resistance prevents twisting and ensures long-term calibration under static loads.
For marine environments and solar mounting racks, our hot-dip galvanized and Zinc-Aluminum-Magnesium (ZAM) coated profiles offer excellent atmospheric protection. They resist rust even in harsh, salty coastal conditions.
Precision materials direct from Hansheng Technology’s manufacturing facility in Tangshan, Hebei.
Mitigating sourcing challenges through transparency, traceability, and strict testing protocols.
For international buyers and EPC contractors, purchasing custom structural hollow profiles involves navigating several logistical challenges, including ensuring wall thickness compliance, verifying coating weight, and coordinating timely ocean freight. At Hansheng Technology, we address these challenges through strict quality protocols. We ensure complete structural traceablity, tracking every run from the raw ladle pour to the final welded and shaped profile.
Every order is supplied with a certified Mill Test Certificate (MTC) according to EN 10204 3.1. This document details the exact chemical composition (including carbon equivalents for weldability) and mechanical performance properties, such as yield point, tensile limits, and charpy V-notch impacts. We welcome third-party pre-shipment inspections from leading global agencies like SGS, Bureau Veritas (BV), and TÜV Rheinland to verify specifications before port loading.
Mission: To provide high-quality building materials and structural steel profiles that support resilient global infrastructure.
Vision: To continue expanding as a trusted manufacturer in the building materials industry by adopting smart, sustainable production practices.
How technological advancements, green initiatives, and material science are shaping the next generation of hollow structural profiles.
S355 yields are increasingly transitioning to high-strength grades like S460 and C450L0. These advanced alloys reduce the required wall thickness, which lowers structure weight and steel consumption while maintaining identical load capacities.
Modern construction relies on automated laser cutting and CNC profiling. Designers choose custom RHS because its precise, uniform corners enable smooth robot welding and rapid assembly of modular steel frames.
Eco-conscious specifications require cleaner steelmaking processes. By optimizing our energy consumption and incorporating recycled scrap steel, we help projects achieve LEED certification goals.
A visual tour of our production facilities in Tangshan, illustrating our cold-forming, high-frequency welding, and inspection processes.
We maintain strong partnerships with major steel production networks, ensuring a steady supply of high-grade raw steel.
A track record of reliable global logistics, dispatching high-performance structural steel directly to project sites worldwide.
Heavy-duty structural support beams processed and loaded for infrastructure development in the UAE.
High-strength heavy plates delivered for energy development and plant infrastructure projects.
Standard structural steel channels supplied to shipyard operations and steel frame fabricators in South Korea.
Galvanized steel wire supplied to agricultural projects and fencing distributors across Florida.
High-tensile prestressed concrete wire strands supplied for highway and elevated railway viaduct projects.
U-type and Z-type hot-rolled structural steel sheet piling shipped for port protection installations.
Pre-painted galvanized steel coils dispatched for manufacturing corrugated roofing sheets and cladding.
Lightweight structural steel I-beams shipped for warehouse construction projects in Kuwait.
High-zinc coating weight galvanized coils delivered for structural framing and solar mounting systems.
Partnering with architects and developers to realize structural stability across landmark projects.
Technical guidance on custom hollow steel section manufacturing, material grades, and logistical solutions.
We supply a complete selection of certified steel products to meet the procurement needs of global distributors and engineering firms.
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