Inox Steel India is a recognized manufacturer and global supplier of Carbon Steel Hollow Sections (CS HS) engineered specifically for heavy-duty structural applications, large frameworks, industrial platforms, long-span assemblies, and high-load environments. Produced in Square (SHS), Rectangular (RHS), and Circular (CHS) variants, our hollow sections comply with IS 4923, IS 1161, EN 10210 (Hot-Finished), EN 10219 (Cold-Formed), and ASTM A500 standards.
Carbon Steel Hollow Sections are widely preferred for structural systems due to their high yield strength, predictable mechanical properties, superior load distribution, and excellent weldability. With higher carbon content and enhanced structural performance compared to mild steel variants, CS Hollow Sections are ideal for industrial buildings, fabrication of heavy frames, mechanical equipment structures, infrastructure projects, and engineered support systems.
Inox Steel India manufactures hollow sections ranging from 40×40 mm to 500×500 mm (SHS), 50×25 mm to 500×300 mm (RHS), and 21.3 mm to 610 mm OD (CHS) with wall thicknesses up to 25 mm, catering to the demanding needs of structural engineers, EPC contractors, fabricators, and OEMs worldwide. Our production follows strict IS and EN quality controls, with testing facilities capable of UT, impact testing, hydrostatic testing, and weld integrity evaluation.
Carbon Steel Hollow Sections from Inox Steel India are trusted across India, the Middle East, Africa, Europe, and South America for high-load projects in oil & gas, heavy fabrication, industrial engineering, construction, and infrastructure development.
Carbon Steel Hollow Sections follow a precise manufacturing sequence to provide high strength, impact resistance, and dimensional accuracy for structural usage.
1️⃣ Slit Coil Preparation
High-strength carbon steel coils are slit into strips according to the final section dimensions.
2️⃣ Forming & Shaping
The strip is gradually formed into Square, Rectangular, or Circular shapes using controlled roll-forming equipment to ensure consistent dimensions and straightness.
3️⃣ High-Frequency Induction Welding (HFIW)
Edges are welded using high-frequency current, creating a strong, reliable longitudinal weld.
For EN 10210 hot-finished sections, heat treatment ensures enhanced mechanical properties.
4️⃣ Sizing, Shaping & Straightening
Sections pass through sizing rolls to achieve exact width, height, wall thickness, and squareness. This step ensures high load-bearing capacity and uniform performance.
5️⃣ Non-Destructive Testing & Mechanical Testing
UT, Eddy Current, Impact Tests (Charpy), tensile tests, and dimensional checks ensure compliance with structural standards.
6️⃣ Cutting & End Finishing
Hollow sections are cut to standard or customized lengths with plain or bevelled ends depending on structural application.
7️⃣ Surface Protection
Supplied in Black, Painted, Primed, GI, or Shot-Blasted finishes based on project requirements.
This manufacturing methodology ensures that CS Hollow Sections deliver consistent performance under bending, compression, torsion, and dynamic loading conditions.
These characteristics make Carbon Steel Hollow Sections essential for frames, trusses, industrial buildings, machinery support structures, and infrastructure systems.
Grades & Standards (Technical Comparison)
👉 Use the MASTER DATASHEET provided above
Key Selection Factors for Structural Buyers
Global & Indian Demand Overview for Heavy Structural Sections
India
Demand driven by:
Industrial fabrication • Oil & gas infrastructure • PEB structures • Metro & bridge projects • Heavy machinery frames
Key consumption hubs: Maharashtra • Gujarat • Tamil Nadu • Telangana • NCR
Middle East & GCC
Used heavily in:
Structural frames • Oil & gas installations • Industrial platforms • Pipe racks • Equipment skids
Major markets: UAE • Saudi Arabia • Oman • Qatar • Kuwait
Africa
Adopted for:
Mining structures • Agricultural machinery frameworks • Water infrastructure • Fabrication projects
Leading regions: Kenya • Nigeria • South Africa • Tanzania
Europe & Americas
EN 10210 and ASTM A500 CS Hollow Sections used in:
Stadiums • Bridges • Heavy industrial plants • Civil structures
Carbon Steel Hollow Sections are engineered for heavy-duty structures where strength, toughness, and dimensional accuracy are critical. Their high load-bearing capacity, superior weldability, and predictable mechanical properties make them essential for industrial, civil, and large-scale fabrication projects.
Below is the structured application breakdown, following the same sample format.
🔹 EN 10210 – S355J2H (Hot-Finished Carbon Steel Hollow Sections)
Service Use:
Heavy structures • Industrial buildings • Load-bearing frames • Pipe racks • Equipment skids • Bridge components
Key Properties:
High yield strength (355 MPa), excellent impact toughness, uniform grain structure.
Size Range:
60×40 mm – 500×300 mm (RHS)
80×80 mm – 500×500 mm (SHS)
76 mm – 610 mm OD (CHS)
Industry Sectors:
Oil & Gas • EPC • Heavy Engineering • Infrastructure • Power Plants
🔹 EN 10219 – S235JRH / S275JRH (Cold-Formed Carbon Steel Hollow Sections)
Service Use:
Medium-to-heavy structural applications requiring dimensional precision.
Typical Applications:
Machinery frames • Support beams • PEB structures • Platforms • Stair assemblies
Size Range:
40×20 mm – 400×200 mm (RHS)
50×50 mm – 300×300 mm (SHS)
Industry Sectors:
Industrial fabrication • Mechanical engineering • Construction
🔹 IS 4923 / IS 1161 – YSt 240 / YSt 310 (Carbon Steel Structural Hollow Sections)
Service Use:
General structural and fabrication work where strength and weldability are required.
Typical Applications:
Industrial sheds • Fabricated assemblies • Structural trusses • Material handling equipment
Size Range:
40×40 mm – 300×300 mm (SHS)
50×25 mm – 350×200 mm (RHS)
Industry Sectors:
Fabrication • Civil Engineering • Storage Systems • OEM Manufacturing
Carbon Steel Hollow Sections – Size & Weight Chart (Indicative)
| Type | Size | Thickness | Approx. Weight (kg/m) |
|---|---|---|---|
| SHS | 80×80 mm | 4.0 mm | 10.20 |
| SHS | 150×150 mm | 8.0 mm | 28.50 |
| SHS | 300×300 mm | 12.5 mm | 69.40 |
| RHS | 100×50 mm | 4.0 mm | 8.10 |
| RHS | 200×100 mm | 8.0 mm | 24.70 |
| RHS | 500×300 mm | 16.0 mm | 92.20 |
| CHS | 114.3 mm OD | 6.0 mm | 16.20 |
| CHS | 219.1 mm OD | 10.0 mm | 42.00 |
| CHS | 508 mm OD | 20.0 mm | 125.50 |
📥 Full EN 10210, EN 10219 & IS weight charts available on request.
Pricing – Carbon Steel Hollow Sections (Indicative Range)
| Type | Size Range | Avg. Price (₹/kg) | Avg. Price ($/kg) | Use |
|---|---|---|---|---|
| CS SHS | 80×80 – 500×500 | ₹68 – ₹95 | $0.85 – $1.25 | Heavy frameworks |
| CS RHS | 100×50 – 500×300 | ₹70 – ₹105 | $0.90 – $1.35 | Load-bearing structures |
| CS CHS | 114.3 – 610 OD | ₹72 – ₹115 | $0.92 – $1.45 | Industrial bracing & supports |
Prices vary by thickness, grade, finish (Black / Primed), and global steel index movement.
HSN / HS Code
HSN 7306 — Carbon Steel Structural Hollow Sections
Used globally for SHS, RHS, and CHS.
Testing & Quality Assurance
Carbon Steel Hollow Sections for heavy structures undergo comprehensive quality testing to ensure compliance with structural and engineering requirements.
Key Tests Performed
Documentation & Certification
Inox Steel India is a trusted manufacturer and global supplier of Carbon Steel Hollow Sections (SHS, RHS, CHS) engineered for demanding structural applications. Our sections are produced with strict dimensional accuracy, high weldability, and strong mechanical properties suitable for heavy frameworks, platforms, and industrial structures.
✔ Why Engineers & Fabricators Prefer Our Carbon Steel Hollow Sections
Our commitment is to deliver reliable structural hollow sections for EPC contractors, PEB manufacturers, fabrication companies, and industrial engineering firms.
Industries & Applications We Serve
| Industry | Applications | Preferred Grades |
|---|---|---|
| Oil & Gas Industry | Pipe racks, skid structures, equipment platforms | S355J2H / S275JRH |
| EPC & Heavy Engineering | Industrial buildings, structural frames | EN 10210, IS 4923 |
| Infrastructure | Bridges, metro structures, walkways | S355J2H |
| Power Plants | Heavy frames, cable tray supports | S275JRH / YSt 310 |
| Fabrication & OEM | Machinery frames, engineered components | YSt 240 / YSt 310 |
| PEB & Civil Construction | Trusses, columns, long-span beams | RHS / SHS (S355J2H) |
Carbon Steel Hollow Sections provide superior load-bearing capacity, stiffness, and strength-to-weight efficiency required for large-scale projects.
Export Readiness & Packaging
Inox Steel India exports Carbon Steel Hollow Sections to more than 40 countries, supplying structural hollow sections for major EPC, PEB, and industrial projects.
Standard Export Packaging
Major Export Markets
UAE • Saudi Arabia • Oman • Qatar • Kuwait • Bahrain
South Africa • Kenya • Nigeria • Tanzania • Egypt
Germany • Italy • UK • France • USA • Canada • Mexico • Brazil
Strong logistical capability ensures smooth dispatch from JNPT, Mundra, Hazira, and Nhava Sheva ports.
EN 10210 offers superior impact toughness and ductility for heavy structures. 40×40 mm to 500×500 mm (SHS), 50×25 mm to 500×300 mm (RHS), and up to 610 mm OD (CHS) with thicknesses up to 25 mm. Yes, SGS, BV, TUV, and DNV inspections are available. Black, painted, primed (shot-blasted), and GI finishes. Yes, with full export documentation and project-specific compliance. What is the difference between EN 10210 (hot-finished) and EN 10219 (cold-formed)?
What sizes and thicknesses are available?
Do you provide third-party inspections?
What finish options are available?
Can you supply Carbon Steel Hollow Sections for international EPC projects?