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ASTM A500 Grade B/C RHS Rectangular Hollow Section Steel Tube
| 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) |
High strength-to-weight ratio
Excellent structural stability
Good weldability and machinability
Precise dimensions and smooth surface finish
Suitable for heavy-duty construction projects
Long service life with protective coatings
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.
The ASTM A500 RHS Rectangular Hollow Section Steel Tube is manufactured using the Electric Resistance Welding (ERW) process, ensuring consistent quality, excellent dimensional accuracy, and superior structural performance for demanding construction applications.
Welding Compliance and Quality Inspection
Welding Process: ERW (Electric Resistance Welding)
Manufacturing Standard: ASTM A500 / ASTM A500M
Weld Inspection: 100% Non-Destructive Testing (NDT) on weld seams
Quality Advantage: High-strength, uniform welds with excellent dimensional precision, providing reliable performance for structural frames, columns, beams, bridges, industrial buildings, and other load-bearing applications.
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ASTM A500 RHS Rectangular Hollow Section Steel Tube – Surface Treatment
| Surface Treatment | Description |
| Black Bare Steel | Standard mill finish with natural steel surface, suitable for general structural applications and indoor projects. |
| Anti-Rust Oiled Surface | Applied with protective oil coating to reduce oxidation during storage and transportation. |
| Hot-Dip Galvanized (HDG) | Zinc coating provides excellent corrosion resistance and long-term protection for outdoor and harsh environments. |
| Pre-Galvanized | Steel tube coated with zinc layer before forming, offering uniform surface protection and cost efficiency. |
| Painted / Powder Coated | Custom color coating available to enhance appearance and provide additional weather protection. |
| Epoxy Coating | High-performance protective coating with excellent resistance to moisture, chemicals, and corrosion. |
| 3PE / FBE Coating | Advanced anti-corrosion coating system suitable for demanding industrial and infrastructure applications. |
ASTM A500 Grade B/C Rectangular Hollow Section (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. Steel Structure Buildings
Used as primary and secondary structural members in industrial buildings, warehouses, workshops, and commercial construction projects, including columns, beams, and bracing systems.
2. Construction Framing Systems
Applied in modern building frames, roof trusses, wall supports, and steel skeleton structures where lightweight and high-strength materials are required.
3. Bridges & Infrastructure Projects
Suitable for bridge components, pedestrian bridges, guardrails, supports, and other infrastructure structures requiring durability and load-bearing capacity.
4. Mechanical & Fabrication Engineering
Used for welded frames, equipment bases, machine supports, trailers, and custom steel fabrications due to its easy processing and strong structural performance.
5. Agricultural & Industrial Structures
Commonly used in farm buildings, storage facilities, greenhouses, and industrial support frameworks.
6. Transportation Applications
Used in truck frames, railway structures, container frames, and vehicle support components where strength-to-weight ratio is important.
7. Architectural Steel Applications
Popular for steel staircases, handrails, fences, canopies, and decorative structural designs requiring a clean rectangular profile.
8. Energy & Utility Projects
Applied in solar mounting structures, transmission supports, equipment platforms, and utility infrastructure projects.
ASTM A500 Grade B/C RHS steel tubes provide a cost-effective solution for building construction, engineered structures, and heavy-duty steel fabrication projects worldwide.
1. Dependable Steel Supply Chain
Royal Steel Group collaborates with trusted steel mills, and has stable supply channels to ensure the supply of high-quality steel products used in construction, infrastructure and industrial projects around the world.
2. A Variety of Steel Products
We are a one-stop steel company in providing hollow sections RHS/SHS, steel pipes, H and I beams, steel plates, steel coils, channels and sheet piles to fulfill different project requirements.
3. Rigid Quality Control
The products were all manufactured up to international standards like ASTM, EN, JIS, API, GB. We offer MTC and SGS reports inspection along with quality documents that are needed to facilitate reliability of products.
4. Customized Solutions
We offer custom sizes, grades, surface treatments as well as cutting and fabricating services to meet the particular requirements of engineering and construction projects.
5. Competitive Pricing & Cost Stability
Due to our strong factory cooperation and significant procurement power, Royal Steel Group can provide pricing off the chart for the products from steel plate to steel beams.
6. Professional Export Experience
With years of experience in exporting international quality bricks, we offer you full export service, including production, packaging, shipping and documentation assistance.
7. Worldwide Project Support
Our products are also available for use extensively in steel structure buildings, warehouses, bridges, infrastructure projects, energy projects, and industry projects, etc. Royal Steel Group — Your Trusted Partner for High-Quality Structural Steel Solutions.
ASTM A500 Grade B/C RHS Rectangular Hollow Section Steel Tube – Packaging Delivery
Packaging
General Export Packaging: RHS steel tube bundles are strapped with steel for security during handling and shipping.
Protective Measures: According to the needs of customers, we can use plastic plugs, waterproof wrappers and rust-preventive oil.
Bundle Marking: Each bundle is marked with product information of size, grade, heat number, quantity and destination to trace the product.
Customized Packing: We can provide customized packing according to your requirements for container loading, bulk shipment or long distance transportation.
Delivery
Transport: By container, bulk vessel, truck, or rail, depending on your project requirement. .
Loading styles: Steel pipes can be loaded into standard containers and also be shipped as break bulk load for big quantity orders.
Delivery Time: Production and shipment schedules are well arranged to meet the timing of customer’s projects.
Export Documents: We are able to provide full documentation including the Commercial Invoice, Packing List, Mill Test Certificate (MTC), Certificate of Origin and Inspection Reports.
Royal Steel Group promises exceptional packaging, dependable logistics and timely delivery of ASTM A500 Grade B/C RHS Rectangular Hollow Section Steel Tubes to clients across the globe.
Q1: What sizes and specifications of ASTM A500 Carbon Steel RHS Pipe can be provided?
Royal Steel Group offers ASTM A500 Grade B/C RHS tubes in different dimensions, thickness and lengths. Customized sizes and project requirements are also available.
Q2: Can I get the quality certificates and inspection reports?
Yes. We offer complete quality documents such as Mill Test Certificate (MTC), SGS inspection report, Certificate of Origin and product test reports to prove that they comply with international standards.
Q3: What surface treatments and personalization service do you offer?
Our services include black steel finish, anti–rust oil painting, hot-dip galvanizing, epoxy coating, cutting and special processing services based on customers’ requirements.
Q4: How do you guarantee product quality and delivery promise?
Royal Steel Group has a rigid quality control system, from raw material inspection to shipping, making sure of stable quality and the accurate dimensions and timely delivery.
Q5: What makes Royal Steel Group a better choice for ASTM A500 Rectangular Steel Pipe?
We offer competitive pricing, dependable supply, international export experience, customization options, and professional logistics support for steel solutions in building and industrial projects around the world.
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