Rectangular Hollow Sections (RHS)

1. Raw Material Preparation: 

Inspection and cutting of high-quality steel strips (carbon/stainless/aluminum) to precise widths based on RHS dimensions.

2. Cold Forming: 

Precision roll-forming of steel strips into rectangular cross-sections, ensuring uniform shape and adherence to tolerance standards.

3. Welding: 

Electric resistance welding (ERW) or submerged arc welding (SAW) to create seamless, durable longitudinal seams—critical for Welded Structural pipe performance.

4. Sizing & Straightening: 

Calibration to refine dimensions, straightness, and squareness, meeting EN 10219/ASTM A500 requirements.

5. Surface Treatment: 

Application of hot-dip galvanizing (for corrosion resistance), powder-coating, or painting based on regional environmental needs and customer requests.

6. Quality Inspection: 

Visual checks, dimensional measurements, tensile strength testing, and weld integrity verification to ensure compliance.

7. Packaging: 

Bundling and protection to prevent damage during transit.

Superior Structural Efficiency: 

Uniform stress distribution delivers exceptional load-bearing capacity, making it ideal for building construction steel pipe and bridge supports.

High Strength-to-Weight Ratio: 

Reduces transportation and installation costs while maintaining durability—perfect for large-scale regional projects.

Excellent Weldability & Machinability: 

Compatible with standard MIG/TIG welding and cutting methods, enabling easy on-site fabrication.

Corrosion Resistance: 

Galvanized, stainless steel, or coated options withstand Middle East salt spray, Southeast Asian humidity, and African tropical moisture.

Aesthetic Versatility: 

Clean rectangular shape suits visible structures like architectural façades, handrails, and street furniture.

Cost-Effective: 

Optimized material use and lightweight design fit diverse regional project budgets.

Our RHS products comply with global and regional standards for seamless project approval:

• International Standards: ASTM A500, EN 10219, JIS G3463, ISO 657-14
• Quality & Environmental Certifications: ISO 9001, CE, RoHS
• Regional Compliance: SASO (Middle East), SONCAP (Africa), SNI (Indonesia), TIS (Thailand)
• All orders include material test certificates (MTC), weld test reports, and compliance documents for customs clearance.

Packaging

• RHS tubes are bundled with high-strength galvanized steel straps to prevent deformation during transit.
• Galvanized or coated units are wrapped in moisture-proof film to protect against humidity (Southeast Asia/Africa) and dust (Middle East).
• Woven bags or nylon plastic outer packaging can prevent bumps and getting wet
• Placed on ISPM 15-certified wooden pallets for international shipping compliance.
• Clear English labeling includes product name, grade, specs, batch number, and handling instructions.

Shipping

• Lead Time: Standard orders (≤100 tons): 10-18 working days; Bulk orders (＞100 tons): 18-28 working days; Customized lengths/coatings: 15-25 working days.
• Logistics Partners: Maersk, CMA CGM (global), Aramex (Middle East), SICEPAT (Southeast Asia), GIGL (Africa).
• Delivery Coverage: Port-to-port, door-to-door for major cities, and inland transport to remote construction sites.

RFQ Question: Do your RHS tubes work for UAE’s outdoor mall façades in high heat? What’s the lead time?

Answer: Yes, our powder-coated or hot-dip galvanized RHS (ASTM A500 Gr B) resists UAE’s 55°C+ heat and sand.. Lead time is 10-16 working days for standard orders.

RFQ Question: Can RHS be used for Indonesia’s flood-prone bridge guardrails? What coating do you recommend?

Answer: We suggest 3PE-coated S355JR RHS for Indonesia’s flood-prone bridges—it resists water corrosion and humidity. The tubes meet SNI standards, offer strong load-bearing capacity, and deliver in 14-22 working days.

RFQ Question: Can RHS be cut to 8m lengths for Kenya’s rural school handrails? Is it easy to install?

Answer: Yes, we offer 8m customized lengths of S235JR RHS for Kenya’s school handrails. It’s lightweight for easy transport to rural areas, hot-dip galvanized for rain resistance, and comes with a simple installation guide.

RFQ Question: Do you supply RHS for Thailand’s agricultural machinery frames? How durable is it in wet fields?

Answer: Our ASTM A500 Gr B RHS is ideal for Thailand’s agricultural machinery—galvanized coating resists wet field humidity.

RFQ Question: What’s the lead time for 80 tons of RHS (200×100mm) for Kenya’s school construction?

Answer: Lead time for 80 tons of RHS (200×100mm, S235JR) is 10-15 working days.