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ASTM A500 Rectangular Steel Tube 50×100 150×100 250x200mm Structural Hollow Section RHS Supplier
| Item | Details |
| Product Name | ASTM A500 Carbon Steel RHS Pipe |
| Standard | ASTM A500 / ASTM A500M |
| Grades | Grade B / Grade C |
| Material | Carbon Steel |
| Shape | Rectangular Hollow Section (RHS) |
| Manufacturing Process | ERW Welded |
| Outer Size | 20×10 mm – 500×300 mm (Customized Available) |
| Wall Thickness | 1.0 – 25 mm |
| Length | 6 m / 12 m / Customized |
| Surface | Black, Galvanized, Painted, Oiled |
| Certification | MTC, SGS, Mill Test Certificate |
| Chemical Composition (Typical) | ||||
| Grade | C | Mn | P | S |
| ASTM A500 Gr.B | ≤0.26% | ≤1.35% | ≤0.035% | ≤0.035% |
| ASTM A500 Gr.C | ≤0.23% | ≤1.35% | ≤0.035% | ≤0.035% |
| Mechanical Properties | ||
| Grade | Yield Strength | Tensile Strength |
| ASTM A500 Gr.B | ≥46 ksi (315 MPa) | ≥58 ksi (400 MPa) |
| ASTM A500 Gr.C | ≥50 ksi (345 MPa) | ≥62 ksi (425 MPa) |
Favorable strength-weight performance
Outstanding structural rigidity
Easy welding and secondary processing
Tight dimensional tolerances with flawless surface texture
ASTM steel pipe refers to carbon steel pipe used in oil and gas transmission systems. It is also used to transport other fluids such as steam, water, and mud.
Our ASTM A500 rectangular hollow sections (RHS) are produced via advanced electric resistance welding (ERW) technology. This mature manufacturing process delivers stable overall quality, precise dimensional tolerance and dependable structural performance, making the tubes well-suited for high-standard construction and engineering projects.
Welding & Quality Control Standards
Welding Technology: High-frequency ERW welding
Production Standard: Compliant with ASTM A500 / ASTM A500M
Weld Quality Check: 100% non-destructive testing (NDT) for all weld seams
Core Quality Strengths: Uniform and high-strength welding joints paired with accurate sizing. These stable mechanical properties ensure long-term structural safety, ideal for load-bearing scenarios including steel frames, support columns, structural beams, bridges and industrial building systems.
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ASTM A500 RHS Rectangular Hollow Section Steel Tube – Surface Treatment
| Surface Treatment | Description |
| Black Bare Steel | Standard as-rolled finish with raw steel appearance; ideal for standard structural use and indoor installations. |
| Anti-Rust Oiled Surface | Light protective oil layer applied to the surface, minimizing rust formation during warehousing and overseas shipment. |
| Hot-Dip Galvanized (HDG) | Full zinc immersion coating delivers robust corrosion resistance and extended service life, recommended for outdoor projects and harsh climatic conditions. |
| Pre-Galvanized | Zinc-coated steel strip formed into tubing; provides consistent surface protection at a more economical price point. |
| Painted / Powder Coated | Custom color finishes available; improves visual aesthetics while adding an extra layer of weather resistance. |
| Epoxy Coating | Heavy-duty protective layer with strong resistance against moisture, chemical exposure and corrosive environments. |
| 3PE / FBE Coating | Premium anti-corrosion coating system engineered for heavy industrial use and critical infrastructure projects. |
ASTM A500 Rectangular Steel Tube (RHS) Steel Tubes are widely used in structural and engineering projects due to their high strength, excellent weldability, and reliable dimensional accuracy. Common applications include:
1. Structural Steel Buildings
These rectangular hollow sections serve as core structural components for industrial and commercial construction. They are widely adopted for main columns, support beams and bracing systems in factories, warehouses and workshop facilities, delivering stable load-bearing performance for building frameworks.
2. Building Framing Systems
Thanks to their lightweight yet high-strength properties, RHS tubes are commonly used in modern building skeletons, roof trusses and wall support structures. They help contractors achieve stable structural performance while optimizing overall material costs.
3. Bridges & Civil Infrastructure
Featuring excellent durability and rigidity, our RHS Steel Tube are ideal for pedestrian bridges, bridge auxiliary components, safety guardrails and various outdoor infrastructure projects that require long-term structural stability.
4. Machinery & Custom Steel Fabrication
Easy to cut, weld and process, these rectangular tubes are widely fabricated into equipment bases, machine frames, support brackets and trailer structures. They fit perfectly for customized mechanical manufacturing and metalwork projects.
5. Agricultural & Industrial Facilities
The steel profiles are extensively used for farm buildings, crop storage shelters, greenhouses and industrial auxiliary frameworks, offering reliable structural support for daily agricultural and industrial operations.
6. Transportation Industry Structures
With an outstanding strength-to-weight ratio, RHS tubes are applied in truck chassis frames, railway auxiliary structures, container frameworks and vehicle support parts, balancing structural safety and lightweight design.
7. Architectural & Decorative Steel Works
Boasting neat section shapes and smooth surface finishes, the tubes are popular for both structural and decorative uses, including steel stair frames, handrails, fencing systems and building canopies.
8. Energy & Utility Engineering
They are commonly specified for solar panel mounting systems, power transmission supports, equipment platforms and other public utility infrastructure, adapting well to outdoor and long-service-cycle projects.
Overall, ASTM A500 Grade B and Grade C Rectangular Hollow Section deliver high cost performance across general construction, civil engineering and heavy steel fabrication, making them a trusted structural solution for global project developers and fabricators.
Steady Steel Supply Network
We maintain long-term partnerships with certified steel manufacturers and reliable supply routes, guaranteeing consistent stock of premium steel materials for global construction, infrastructure and industrial developments.
Full-Range One-Stop Steel Product Line
Our product portfolio covers SHS/RHS hollow sections, steel tubes, H/I beams, steel sheets, coils, channels and sheet piles, covering all kinds of project material demands.
Strict Standardized Quality Checks
All goods comply with global standards including ASTM, EN, JIS, API and GB. Mill test certificates and SGS third-party inspection reports will be provided to prove product quality.
Customized Processing Service
Tailored dimensions, steel grades and surface finishes are available. We also support cutting and fabrication to match unique engineering project specs.
Favorable & Stable Pricing
Long-term mill cooperation and bulk purchasing capacity help us deliver cost-effective rates across our full steel product range.
Mature Full-Set Export Service
We boast years of cross-border shipment experience, offering integrated support covering production, export packaging, logistics arrangement and full customs clearance documents.
Global Engineering Project Coverage
Our structural steel materials are widely adopted for steel workshops, warehouses, bridges, municipal infrastructure and energy facilities.
ASTM A500 Grade B/C RHS Packaging & Delivery
Packaging
All RHS tubes are tightly bound with steel bands for safe handling during transit.
Extra protection options: plastic end caps, waterproof wrapping and anti-rust oil as requested.
Every bundle carries clear labels listing dimensions, steel grade, heat number, quantity and destination for easy tracking.
Custom packaging solutions are offered for container, bulk cargo and long-distance transport.
Delivery
Multiple transport options: container shipment, bulk carrier, truck and rail transport to match project plans.
Small batches fit standard containers; large-volume orders can be shipped break bulk.
We schedule production and shipment strictly to hit customers’ project timelines.
Complete export paperwork provided: commercial invoice, packing list, MTC, certificate of origin and third-party inspection certificates.
Royal Steel Group delivers ASTM A500 Rectangular Steel Tube worldwide with secure packaging, stable logistics and on-time shipment guarantee.
1. What size options do you offer for ASTM A500 Rectangular Hollow Section?
We keep mainstream RHS sizes in stock, including 50x100 Rectangular Tube, 150x100 Rectangular Tube and 250x200 Rectangular Tube. Bespoke dimensions and custom wall thicknesses are also available to fit unique project needs.
2. What material grades are available?
We provide the full range of ASTM A500 grades: Grade A, B, C and D. All grades deliver stable mechanical properties and are fully qualified for structural engineering use.
3. Where are RHS Steel Tube commonly used?
These hollow sections are widely applied in steel building frames, warehouse construction, bridge works, mechanical supports, solar mounting systems and general industrial projects.
4. Do you support custom rectangular tube production?
Yes. We offer one-stop customization, including tailored tube sizes, wall thicknesses, cut lengths, surface finishes and export packaging solutions.
5. How do you ensure consistent product quality?
Every batch undergoes rigorous factory testing and inspection. We can provide Mill Test Certificates, SGS/BV third-party inspection reports and full quality documentation upon request.
6. What packaging and shipping methods do you adopt?
All tubes are securely bundled with steel straps and covered with waterproof packaging. We support both containerized and bulk shipments for global delivery.
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