Product Overview
ASTM A500 Grade B HSS (Hollow Structural Section) is a popular cold‑formed carbon steel structural tube under North American standards, available in square, rectangular and circular hollow sections, manufactured by ERW high‑frequency welding and seamless processes. As a highly versatile load‑bearing steel for American‑standard engineering projects, it strictly complies with ASTM A500 specifications with well‑balanced strength, ductility and workability and favorable cost‑performance. Widely adopted in global steel‑structure projects, it serves as an ideal load‑bearing profile for construction, infrastructure and machinery manufacturing.
Core Technical Specifications
Standard: ASTM A500 / ASME SA500
Grade: Grade B (GR.B)
Yield Strength: ≥290MPa (42ksi)
Tensile Strength: ≥400MPa (58ksi)
Section Types: SHS Square, RHS Rectangular, CHS Circular
Manufacturing Process: Cold‑formed welded & seamless
Size Range: custom sizes available
Certification: EN 10204 3.1 / 3.2 material test report available
Key Advantages
Balanced and Reliable Performance Grade B delivers an optimal combination of strength and ductility. It outperforms Grade A in strength and shows better toughness and workability than Grade C & D. Excellent bending and torsion resistance together with even stress distribution enable long‑term static & dynamic load resistance without deformation or cracking, meeting most engineering load‑bearing requirements.
High Dimensional Accuracy & Good Processability Produced by precision cold‑forming, the tubes feature regular sections, uniform wall thickness, high straightness and smooth burr‑free surfaces. Tight dimensional tolerances ensure excellent performance for secondary operations including welding, cutting, bending and drilling for various steel‑structure assembly work.
Light‑Weight High‑Strength & Cost‑Saving Compared with solid steel profiles under equal bending and torsion capacity, HSS hollow tubes greatly reduce self‑weight of structures and foundation loads, cutting material and construction expenditure. Good weldability and weather resistance extend service life for superior overall economic benefits.
Internationally Accepted & Fully Compliant Fully conforming to North‑American ASTM requirements, it fits acceptance codes for North America, Middle East, Southeast Asia and other regions, compatible with design specifications of overseas projects, and widely used in export steel‑structure contracts.
Applications
Widely used for high‑rise building frames, steel‑structure workshops, bridge supports, municipal infrastructure, billboard supports, power transmission towers, equipment frames, vehicle components, storage racks and other industrial & civil load‑bearing steel‑structure works.
Quality Assurance
We are always at your service when you need
Each batch undergoes full inspections including mechanical tests, chemical analysis, dimensional check and visual & non‑destructive testing before shipment to meet standard requirements. Complete inspection documents are supplied.
Custom sizes, cutting, derusting, anti‑corrosion coating and other further processing services are offered to deliver one‑stop pipe solutions for global clients.
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