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Rectangular Hollow Sections (RHS)

Rectangular Hollow Sections (RHS) Manufacturer, Supplier & Exporter – IS 4923 / EN 10219

Inox Steel India is a trusted manufacturer, stockist, and global exporter of Rectangular Hollow Sections (RHS) engineered for high-performance structural, architectural, and fabrication applications. Manufactured according to IS 4923 and EN 10219, our RHS products deliver exceptional strength, dimensional accuracy, flat-sided uniformity, and superior weldability for modern construction and engineering requirements.

RHS is widely preferred for structures that demand strong axial load capacity, excellent bending resistance, and easy integration into fabricated assemblies. The flat surfaces and optimized corner radii of RHS make it particularly suitable for PEB structures, solar mounting systems, heavy industrial frameworks, and civil infrastructure.

With advanced ERW/HFIW forming lines and cold-forming capabilities, Inox Steel India produces RHS in sizes ranging from 40×20 mm to 500×300 mm with wall thicknesses up to 20 mm. Our ISO-certified production, strict testing protocols, and comprehensive traceability ensure consistent quality for domestic and international customers across the Middle East, Africa, Europe, and the Americas.

Table of Contents

How RHS Are Manufactured

Rectangular Hollow Sections are produced through a precise shaping and welding process that ensures strength, stability, and uniformity:

1️ Slitting & Coil Preparation – High-grade steel coils are slit into strips of exact width.
2️ Roll Forming – The strip is shaped into a rectangular profile with controlled corner radii.
3️ High-Frequency Induction Welding – A continuous weld forms the joint while maintaining structural integrity.
4️ Cold-Forming (EN 10219) – Used to achieve accurate dimensions and enhanced mechanical properties.
5️ Sizing & Calibration – Ensures exact width, height, wall thickness, and flatness tolerance.
6️ Non-Destructive Testing – UT/Eddy Current tests applied to confirm weld soundness.
7️ Cutting & Finishing – Supplied in plain or bevelled end conditions.
8️ Surface Treatment – Black, GI, painted, and oiled options available.

This advanced manufacturing sequence guarantees that each RHS meets structural and architectural demands with long-term reliability.

Key Advantages & Features of RHS


High bending and moment resistance due to rectangular geometry

  • Uniform flat surfaces ideal for fabrication and bolted connections
  • Excellent weldability and machinability
  • Clean aesthetic profile for exposed designs
  • Better load distribution in one direction compared to SHS
  • Higher section modulus and inertia for long-span structures
  • Strong, stable, and predictable under axial and transverse loads

These properties make RHS the backbone of many engineering, solar, and civil projects worldwide.

Grades & Standards (Technical Comparison)

👉 Insert the RHS Master Datasheet table here

Key Factors to Consider When Selecting RHS

1️ Load Orientation – Choose RHS where one direction requires higher bending resistance.
2️ Corner Profile & Flatness – Critical for bolting, welding, and aesthetic finishing.
3️ Thickness vs. Span Length – Thicker RHS performs better for long-span or high-moment structures.
4️ Service Environment – GI/Painted RHS recommended for outdoor installations.
5️ Compliance – Middle East/EU prefer EN 10219; India uses IS 4923.

Global & Indian Demand Analysis for RHS

India

Major demand from:

  • PEB manufacturers
  • Industrial fabrication units
  • Solar EPC companies
  • Building construction segments
    Top consuming regions: Mumbai, Pune, Chennai, Hyderabad, Ahmedabad, NCR.

Middle East & GCC

Used widely for:

  • MMS structures
  • Warehouses & factories
  • Civil infrastructure
    Countries: UAE, Saudi Arabia, Qatar, Oman.

Africa

Growing adoption in:

  • Mining structures
  • Agricultural frameworks
  • Steel fabrication
    Markets: Kenya, Nigeria, South Africa.

Europe & Americas

EN 10219 S355J2H & ASTM A500 RHS preferred for:

  • Heavy civil engineering
  • Stadiums & bridges
  • Industrial plants

Applications and Technical Specifications by Grade and Standard

Rectangular Hollow Sections (RHS) are widely used across industrial, civil, and architectural projects due to their strong directional load capacity, flat-sided geometry, and structural efficiency. With high resistance to bending and deflection, RHS is preferred in applications where structural integrity and design versatility are essential.

Below is the grade-wise application mapping identical in approach to the sample’s structure:

🔹 IS 4923 – YSt 210 / YSt 240 / YSt 310 (Structural RHS)

Service Use:
General structural work requiring reliability, dimensional accuracy, and excellent weldability.

Typical Applications:
PEB frameworks • Staircases • Mezzanine floors • Industrial sheds • Material handling structures • Fabricated components

Size Range:
40×20 mm – 400×200 mm

Industry Sectors:
PEB | Fabrication | Construction | Light engineering

🔹 EN 10219 – S235JRH / S275JRH (Cold-Formed RHS)

Service Use:
Medium-strength structural installations requiring tighter dimensional control and cold-formed accuracy.

Typical Applications:
Solar structures • Agricultural buildings • Civil engineering supports • Architectural framing

Size Range:
40×20 mm – 500×300 mm

Industry Sectors:
Solar | Industrial | Civil | Storage Solutions

🔹 EN 10219 – S355J2H (High-Strength RHS)

Service Use:
Heavy-duty structures needing superior yield strength, impact toughness, and high moment capacity.

Typical Applications:
Long-span trusses • Crane girders • Heavy platforms • Large industrial buildings • Infrastructure supports

Size Range:
60×40 mm – 500×300 mm (3–20 mm thickness)

Industry Sectors:
Heavy structures | PEB | Power sector | Industrial EPC | Oil & Gas support modules

RHS Size Range & Dimensional Chart

 

Size (mm) Thickness (mm) Approx. Weight (kg/m)
40×20 1.6 1.40
50×25 2.0 2.30
60×40 2.6 3.90
80×40 3.2 5.40
100×50 3.6 7.20
120×60 4.5 10.80
150×100 6.0 18.70
200×100 8.0 30.20
250×150 9.0 47.80
300×150 10.0 58.60
350×200 12.0 92.40
400×200 16.0 150.50
500×300 20.0 240.80

📥 Complete IS 4923 & EN 10219 RHS size and weight chart available on request.

RHS Price List – Indicative (Domestic & Export)

 

Grade / Standard Size Range Avg. Price (₹/kg, FOB India) Avg. Price ($/kg) Typical Use
IS 4923 YSt 210 40×20–300×150 ₹70 – ₹82 $0.90 – $1.05 General structures
IS 4923 YSt 310 60×40–400×200 ₹82 – ₹98 $1.00 – $1.18 PEB, fabrication
EN 10219 S235JRH 40×20–500×300 ₹90 – ₹110 $1.10 – $1.35 Civil & solar
EN 10219 S355J2H 60×40–500×300 ₹110 – ₹150 $1.40 – $1.85 Heavy structures

🧾 Prices vary based on wall thickness, finish (Black/GI/Painted), size, and raw material costs.

RHS HSN / HS Code Classification

  • HSN 7306 – Welded hollow structural steel sections
    Used worldwide for import/export of IS 4923 & EN 10219 RHS.

Testing & Quality Assurance for RHS

All Rectangular Hollow Sections undergo rigorous quality checks to ensure structural integrity, uniformity, and compliance with international standards.

Quality Tests Performed

  • Tensile Test
  • Yield Strength & Elongation Test
  • Ultrasonic Testing (UT)
  • Eddy Current Test (weld seam integrity)
  • Flattening Test
  • Drift Expansion Test
  • Hydrostatic Test (if required)
  • Dimensional Verification (width, height, wall thickness, squareness)
  • Surface Inspection for scale, dents, rust

Certifications Provided

  • EN 10204 – 3.1 / 3.2
  • Third-party inspection (SGS | BV | TUV | DNV)
  • Country-specific export documentation

Why Choose Inox Steel India

Inox Steel India is known for producing structurally reliable, dimensionally accurate, and internationally compliant Rectangular Hollow Sections (RHS) that deliver consistent performance in construction, fabrication, and infrastructure projects. Our commitment to quality, timely delivery, and engineering support has made us a trusted supplier across India, the Middle East, Africa, Europe, and the Americas.

Key Advantages

  • Large Manufacturing & Stocking Capacity
    Continuous production of RHS from 40×20 mm to 500×300 mm with multiple thickness options.
  • Certified International Quality
    All RHS are manufactured as per IS 4923 / EN 10219, providing complete traceability and compliance.
  • Accurate Dimensions & Flatness
    Precise width, height, and corner radii ensure easy fabrication and stable structural performance.
  • Ready Stock in Major Sizes
    Regularly stocked in Black, GI, Painted, and Oiled finishes for immediate dispatch.
  • Export-Grade Supply Capability
    Fast delivery cycles with worldwide shipments through JNPT, Mundra, Hazira, and Nhava Sheva.
  • TP Inspection Support
    SGS, BV, TUV, DNV inspections arranged on request for project approvals.
  • Competitive Pricing
    Optimized cost structure with stable pricing for bulk and project-based orders.

Industries & Applications We Serve

Industry Applications Preferred Grades
Construction & PEB Columns, Long-Span Trusses, Staircases IS 4923 YSt 240/310
Solar Energy Module Mounting Systems, MMS Frames EN 10219 S355J2H
Fabrication Machinery Frames, Platforms, Support Structures IS 4923
Infrastructure Bridges, Walkways, Civil Supports EN 10219 S275JRH / S355J2H
Architectural Frameworks, Railings, Aesthetic Designs S235JRH / S355J2H
Industrial Engineering Cranes, Load Frames, Material Handling S355J2H

RHS is preferred for its superior resistance to bending in one major direction, making it highly suitable for structural systems subjected to directional loads.

Export Readiness & Packaging

All Rectangular Hollow Sections are packed following global structural steel export standards:

  • Steel-strapped bundles for secure loading
  • HDPE wrapping to prevent corrosion
  • Plastic end caps for GI/Painted sections
  • Bundle tags with grade, size, heat number & country of origin
  • Wooden pallets & crates for Europe/USA shipments

🌍 Regular Export Destinations

UAE • Saudi Arabia • Qatar • Oman • Kuwait • Bahrain • Kenya • Nigeria • South Africa • Egypt • Germany • Italy • UK • USA • Canada • Mexico

Our export team manages documentation, LC/TT terms, packaging, fumigation, and vessel coordination for smooth shipment processing.

From 40×20 mm to 500×300 mm with thicknesses from 1.6 mm to 20 mm.

Yes, both GI and Painted variants are available.

Yes, EN 10219 S355J2H RHS is widely used for solar MMS structures.

Yes, to the Middle East, Africa, Europe, and the Americas.

Yes, custom lengths are available along with standard 6 m and 12 m sizes.