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Hollow Sections

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What Are Hollow Sections (CHS/SHS/RHS) — And Why They Matter

In the world of structural engineering and fabrication, Hollow Sections represent the most balanced combination of strength, weight efficiency, and clean geometry. A hollow section is a cold-formed or hot-finished steel tube available in three primary shapes:

  • CHS — Circular Hollow Sections
  • SHS — Square Hollow Sections
  • RHS — Rectangular Hollow Sections

Unlike conventional solid sections, hollow sections offer superior load distribution, excellent torsional resistance, aesthetic appearance, and uniform strength across the structure. This makes them the preferred choice for:

  • Construction projects
  • Industrial fabrication
  • Solar structures
  • Furniture design
  • Automotive & transport frameworks

Engineers choose CHS/SHS/RHS when they require structural reliability, high bending resistance, reduced weight, and long operational life. These sections are manufactured as per IS 4923, EN 10219, EN 10210, ASTM A500, and IS 1161, ensuring consistent mechanical properties, dimensional accuracy, and weldability.

From multi-storey buildings to solar EPC projects, from warehouse frames to bus-body and trailer chassis, Hollow Sections have become a universal structural material trusted across India, GCC, Africa, Europe, and Asia.

How Hollow Sections Are Manufactured

Hollow Sections are manufactured through either cold forming or hot finishing processes, depending on the required mechanical performance.

Cold-Formed Hollow Sections (EN 10219)

These are produced by forming steel coils into CHS/SHS/RHS shapes followed by high-frequency welding, sizing, and straightening. They offer:

  • Smooth surface finish
  • Tight dimensional tolerances
  • Superior forming and fabrication response

Hot-Finished Hollow Sections (EN 10210)

These are formed at elevated temperatures and normalized post-manufacturing, ensuring:

  • Higher strength
  • Better impact toughness
  • Reliable performance in heavy industrial structures

Why This Process Matters

The production route ensures:

  • Uniform wall thickness
  • High load-bearing capacity
  • Enhanced structural consistency
  • Excellent weldability and machinability

This is why EPC contractors, steel fabricators, civil engineers, and automotive manufacturers prefer IS 4923 / EN 10219 / EN 10210 / ASTM A500 compliant hollow sections.

Why Inox Steel India

Inox Steel India stands among India’s top Hollow Sections manufacturers, suppliers, and exporters.

With over a decade of experience and multi-material capability — from Stainless Steel to Carbon, Alloy, Duplex, and Nickel Alloys with Product Pipes, Tubes, Bars we serve the world’s most demanding industries with trust, traceability, and timely delivery.

CHS vs SHS vs RHS (THE REAL DIFFERENCE)

FeatureCHS — CircularSHS — SquareRHS — Rectangular
ShapeRoundSquareRectangular
Load DistributionBest for torsionBalancedBest for bending
Aesthetic UseHighMediumMedium
Strength-to-WeightHighestHighHigh
ApplicationsArchitectural, handrailsFrames, supportsBeams, rafters
FabricationEasy to roll/bendEasy to cut & weldStrong for spans

👉 Verdict:

All three shapes serve different structural needs.

  • CHS = balanced torsional performance
  • SHS = uniform profile for fabrication
  • RHS = maximum strength for beams & spans

Hollow Section Sizes, Dimensions & Specifications 

We supply Hollow Sections from:

  • CHS: 21.3 mm OD to 508 mm OD
  • SHS: 15×15 mm to 300×300 mm
  • RHS: 20×10 mm to 400×200 mm

Wall Thickness Range: 1.6 mm to 16 mm
Lengths Available: 6 meters, 12 meters, and custom cut-to-length

Standards Covered:

  • IS 4923 – Structural hollow steel sections
  • EN 10219 – Cold-formed structural hollow sections
  • EN 10210 – Hot-finished structural hollow sections
  • ASTM A500 – Structural tubing (Grades A/B/C)
  • IS 1161 – Steel tubes for structural purposes

Common Grades:

  • YST 210 / YST 240 / YST 310
  • S235JRH / S275J0H / S355J2H
  • ASTM A500 Gr A / Gr B / Gr C

We also provide weight charts, size charts, and load tables to help engineers calculate structural performance.

Mild Steel Hollow Sections (MS CHS / SHS / RHS)

Mild Steel Hollow Sections are the most widely used category across fabrication and construction due to their balanced strength, excellent weldability, and cost-efficiency. Manufactured under IS 4923 / IS 1161, they are the backbone of structural frames, industrial sheds, and machinery columns.

Why engineers choose MS Hollow Sections:

  • Easy to cut, bend, drill, and weld
  • Consistent mechanical properties
  • Economical for large-scale projects
  • Suitable for all weather-protected structures

Typical use:
Warehouse frames • MS sheds • Fabrication units • OEM structures • Support frames

Product Type by Material

Carbon Steel Hollow Sections

(High-Strength SHS / RHS / CHS)

Carbon Steel Hollow Sections offer superior strength and enhanced mechanical performance for heavy-duty structural applications. Manufactured as per EN 10210 and EN 10219, these sections are preferred when high load-bearing capacity and durability are required.

Grades Offered:

  • S235JRH
  • S275J0H
  • S355J2H

Why engineers prefer Carbon Steel:

  • Higher yield strength
  • Excellent resistance to impact
  • Ideal for large-span frames and bridges
  • Performs reliably under dynamic loads

Used in:
PEB structures • Industrial sheds • Machinery supports • Bridges • Heavy frameworks

Stainless Steel Hollow Sections

(SS 304 / 316 / 202)

Stainless Steel Hollow Sections are used where aesthetic appearance + corrosion resistance are essential. Manufactured per ASTM A554 / EN 10296, these tubes offer long life in aggressive and hygiene-sensitive environments.

Why buyers choose SS Hollow Sections:

  • Rust-free surface for outdoor and coastal use
  • Clean aesthetic finish (polished / satin)
  • Food-grade & chemical resistant
  • Long service life with minimal maintenance

Typical use:
Architectural structures • Railing frames • Designer furniture • Facades • Marine zones

Galvanized Hollow Sections

(GI / Pre-Galvanized CHS / SHS / RHS)

Galvanized Hollow Sections are ideal for outdoor and high-moisture applications. Hot-dip or pre-galvanized coatings provide superior corrosion resistance, making them indispensable for solar and canopy structures.

Why engineers prefer GI Hollow Sections:

  • Long-term corrosion protection
  • Suitable for coastal regions & open weather
  • Higher durability for solar EPC frameworks
  • Ideal for signboards, towers, and canopies

Used in:
Solar mounting • Carports • Outdoor frames • Greenhouse structures • Lighting poles

Standards & Specifications for Hollow Sections

Standard CodeDescription / Material ScopeCommon Grades Supplied
IS 4923Hot/Cold formed SHS & RHS for structural useYST 210 / 240 / 310
IS 1161Structural steel tubes – circularYST 210 / 240
EN 10219Cold-formed hollow sectionsS235JRH / S275J0H
EN 10210Hot-finished hollow sectionsS355J2H
ASTM A500North American structural tubingGr A, B, C
IS 3601Steel tubes for structural purposesYST grades

This ensures compatibility with Indian, European, and American project specifications.

CHS / SHS / RHS— Shape-Wise Technical Performance

Circular Hollow Sections (CHS)

  • Ideal for torsional resistance
  • Uniform shape → excellent for architectural use
  • Preferred for columns, poles, and curved structures

Square Hollow Sections (SHS)

  • Symmetrical profile
  • Ideal for welding, bolting & fabrication
  • Used widely in frames, gates, and fabrication units

Rectangular Hollow Sections (RHS)

  • Better bending strength compared to SHS
  • Best for beams, rafters, and large spans
  • High rigidity → suitable for industrial load applications

Talk to our experts for technical support, pricing, and bulk orders.

Get your Hollow Sections quotation within 24 hours.

Hollow Sections Uses Across Industries

Hollow Sections are used wherever strong, versatile, and lightweight structural members are required. Typical applications include:

  1. Construction & Building Frames – columns, rafters, beams, trusses
  2. Industrial Fabrication – machinery supports, equipment frames
  3. Solar & Canopy Structures – EPC frameworks, carports
  4. Furniture & Architectural Use – designer structures, railings
  5. Automotive & Transport – bus body structures, trailer chassis

Why Choose Us for Hollow Sections

Inox Steel India Located in Mumbai with ready stock of CHS/SHS/RHS in MS, CS, SS & GI, we supply hollow sections that meet global structural requirements.

  1. Largest inventory of structural hollow sections
  2. Material from reputed mills (TDC, AMNS, Jindal, Apollo)
  3. Cut-to-length & fabrication-ready supply
  4. Mill Test Certificates (EN 10204 3.1)
  5. Quick delivery across India & export support
  6. Consistent dimensions and mechanical properties

We support EPC contractors, fabrication companies, PEB builders, and OEM manufacturers with reliable hollow section supply.

Hollow Section Price Per Kg – India vs Global

Hollow Sections (CHS / SHS / RHS) prices vary based on material, wall thickness, size, and coating type (MS / CS / GI / SS). Below is an indicative price range for standard grades:

Material / TypeTypical Size RangeApprox. Price (₹/kg)Approx. Price (USD/kg)
MS Hollow Sections (CHS/SHS/RHS)15×15 to 300×300₹62 – ₹78$0.75 – $0.95
GI Hollow Sections (Hot Dip / Pre-GI)20×20 to 250×250₹72 – ₹95$0.88 – $1.15
Carbon Steel (EN 10210/10219)40×40 to 300×200₹70 – ₹105$0.90 – $1.25
Stainless Steel Hollow Sections20×20 to 200×100₹220 – ₹450$3.2 – $6.0

Prices fluctuate depending on coil origin (AMNS, JSW, TDC, Jindal), zinc coating (for GI), grade selection, and project quantity.

Bulk buyers, EPC contractors, and long-term fabricators can request special CIF/FOB pricing with MTC certification.

Application & Industry Mapping

Industry / ApplicationTypical Standard & GradePurpose / Use
Construction & PEB StructuresIS 4923 YST 240 / EN 10219 S235JRHColumns, rafters, trusses
Industrial Fabrication & OEMsIS 1161 YST 210 / EN 10210 S355J2HMachine frames, equipment supports
Solar EPC & Canopy StructuresGI / Pre-GI SectionsSolar mounting, carports, light structures
Furniture & ArchitecturalSS 304 / SS 316 / MSDesigner frameworks, facades, railings
Automotive & TransportIS 4923 YST 310Bus body, trailer chassis, trolleys
Signage & Outdoor StructuresGI / Hot-Dip GalvanizedPoles, towers, frames

Global Export Destinations for Hollow Sections

We export CHS, SHS, and RHS across:

  1. GCC & Middle East: UAE • Saudi Arabia • Qatar • Oman • Bahrain • Kuwait
  2. Africa: Nigeria • Kenya • Tanzania • South Africa • Ghana
  3. Europe: Spain • Italy • Germany • Poland
  4. Americas: USA • Brazil • Mexico
  5. Asia Pacific: Singapore • Malaysia • Indonesia

Every shipment includes EN 10204 3.1 MTC, full traceability, and packaging suitable for export containers.

Testing & Documentation Support

Every Hollow Section supply is accompanied by:

  1. EN 10204 3.1 Mill Test Certificate
  2. Mechanical & Chemical Test Reports
  3. Weld seam ultrasonic test reports (for welded sections)
  4. Galvanizing thickness certificate (for GI)
  5. Dimensional inspection report
  6. Third-Party Inspection (TÜV / BV / SGS / LR) – on request
  7. Load & impact test reports for structural use

Heat number, batch number, and grade are stamped for full traceability.

Why We Lead the Hollow Sections Market

  1. Multi-material capability: MS | CS | SS | GI
  2. Widest range of CHS, SHS, RHS under one roof
  3. Direct sourcing from top mills (AMNS / JSW / Apollo / TDC / Jindal)
  4. Ready stock in multiple thicknesses (1.6 mm to 16 mm)
  5. Cut-to-length, drilling, punching & fabrication-ready supply
  6. Ex-stock delivery across India and rapid export shipping
  7. Full documentation + engineering support
  8. Support for EPC tenders, PEB projects & OEM bulk orders

We are trusted by fabricators, EPC companies, building contractors, solar integrators, automotive units, and machinery manufacturers.

How to Order or Request a Quote

Inox Steel India

52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004

Email

info@inoxsteelindia.com

Phone

+91 9820920268

FAQs

They are used for structural frames, industrial fabrication, solar mounting, automotive bodies, and architectural applications.

CHS (Circular), SHS (Square), and RHS (Rectangular).

IS 4923 (SHS/RHS) and IS 1161 (CHS).

YST 210 / 240 / 310 and European grades S235JRH / S355J2H.

Yes — Hot-Dip GI and Pre-GI sections are supplied for outdoor use.

CHS: 21.3–508 mm OD
SHS: 15×15–300×300 mm
RHS: 20×10–400×200 mm

Yes, to GCC, Africa, Europe, America, and Asia-Pacific regions.