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Rectangular Hollow Sections (RHS) Manufactured in China
Our Rectangular Hollow Sections (RHS) are high-performance carbon steel structural tubes produced in our ISO-certified facility in Tianjin, China. As a specialized manufacturer, we offer a comprehensive range of RHS profiles that are essential for modern construction, engineering, and infrastructure projects.
RHS is widely recognized for its superior structural efficiency and flat-surface design, making it easier for joining, welding, and bolting compared to round sections. Available in Black, Hot-Dipped Galvanized, and Painted finishes, our rectangular tubes provide exceptional anti-rust and acid resistance properties, ensuring a long service life even in demanding environmental conditions.
Technical Specifications
| Feature | Details & Specifications |
| Product Name | RHS (Rectangular Hollow Section) |
| Manufacturing Origin | Tianjin, China |
| Size Range | 20×20mm – 400×400mm |
| Wall Thickness | 0.6mm – 16mm |
| Material Grades | Q195, Q235, Q345 / S235, S355 / SS400, STK500 |
| Standard Compliance | EN 10210, ASTM A500, GB/T 3094, JIS G3466 |
| Surface Treatment | Black (Bared), HDG (Hot-Dipped Galvanized), Pre-galvanized, Painted |
| Length Range | 1m – 12m (Standard 5.8m/6m or Customized) |
| End Treatment | Plain Ends (Burr-free), Beveled Ends |
| Certification | ISO, SGS, BV and other third-party testing support |
Key Advantages
Product Applications
Construction & Building: Structural frames, support columns, and architectural facades.
Engineering Projects: Heavy-duty structural frameworks for industrial machinery and crane arms.
Agriculture: High-durability and corrosion-resistant frameworks for large-scale greenhouses.
Infrastructure: Support beams for bridge construction, fencing systems, and highway barriers.
Low-Pressure Delivery: Specialized applications in fluid and utility transportation.
Packaging & Delivery
Frequently Asked Questions (FAQ)
Q: Why should I source RHS from your China-based factory?
A: We combine 15+ years of export experience with advanced manufacturing in Tianjin, China’s steel hub. This allows us to provide factory-direct pricing, strict compliance with international standards (ASTM/EN), and reliable logistics.
Q: Do you supply high-strength S355 material for RHS?
A: Yes. We offer S355 and Q345 material grades, which provide high yield strength (>345Mpa) required for heavy-duty structural and engineering applications.
Q: Can you provide third-party testing reports?
A: Absolutely. We fully support inspections by SGS, BV, or other independent agencies. We also provide Mill Test Certificates (MTC) with every order.
Q: How do you handle the rust issue during long-distance sea shipping?
A: For black pipes, we provide professional oiling; for galvanized pipes, we offer high-quality zinc coating and damp-proof bundle wrapping to prevent oxidation during maritime transit.
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