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Inox Steel India supplies high-strength, weldable, load-bearing structural pipes in ASTM A106 (Seamless) and EN 10210 (Hot-Finished Hollow Sections).
Both materials are widely used in heavy fabrication, industrial structures, mechanical frameworks, bridges, platforms, trusses, and equipment support systems.
A106 is a pressure-grade seamless pipe often preferred for structural applications requiring superior strength, wall thickness, and weld reliability.
EN 10210 is a European structural standard for round, square, and rectangular hollow sections with high yield strength and excellent impact toughness.
Together, they cover the entire range of structural engineering needs — from columns and trusses to machine frames and load-bearing members.
What Are Structural Application Pipes? Why A106 & EN 10210 Are Used?
Structural pipes are used where strength, rigidity, weldability, and dimensional stability are critical.
These materials support static and dynamic loads in:
A106 Grade B is seamlessly manufactured, offering superior:
Because of its strong metallurgical composition, A106 is widely used in structural fabrication requiring heavy duty and long service life.
EN 10210 provides:
These features make EN 10210 ideal for steel structures, platforms, trusses, mechanical support beams, crane frames, and bridges.
Strength-to-Weight Advantage
Hollow sections offer high load-bearing capacity with lower weight, making them ideal for:
Excellent Weldability
Both A106 and EN 10210 have low carbon equivalent (CE), ensuring:
Superior Dimensional Accuracy
Critical for:
Impact Toughness
EN 10210 (J2H) ensures 27J at −20°C, making it perfect for:
Long Service Life
Thicker walls + seamless quality = extended fatigue life.
Multiple Shape Options (EN 10210)
Supports modern architectural and industrial structural designs.
| Parameter / Property | ASTM A106 (Gr A/B/C) | EN 10210 (S355J2H / S275J2H) |
|---|---|---|
| Material Type | CS Seamless Pipe | Hot-Finished Structural Hollow Section |
| Primary Use | Pressure + Structural | Structural & Mechanical |
| Yield Strength | 240–275 MPa | 275–355 MPa |
| Tensile Strength | 415–550 MPa | 470–630 MPa |
| Impact Value | Notched impact optional | 27J @ −20°C (J2) |
| Shape Available | Round | Round / Square / Rectangular |
| Pipe Type | Seamless | Seamless / HF / Hot-Finished |
| Weldability | Excellent | Excellent |
| Dimensional Accuracy | High | Very High |
| Max OD Range | ½” – 36” | 21.3 mm – 508 mm (round) |
| Wall Thickness | SCH 20 – XXS | 2 mm – 40 mm |
| Surface Finish | Black / Oiled | Black / Bare |
| Equivalent Standards | EN 10216-1 | ASTM A500 |
| Temperature Suitability | Up to 425°C | Ambient & structural |
| Common Uses | Structural + Pressure | Pure Structural & Fabrication |
| HSN Code | 730419 | 730661 / 730690 |
| Certificates Provided | EN 10204 3.1 | EN 10204 3.1 |
| Feature | A106 | EN 10210 |
|---|---|---|
| Type | Pressure pipe used in structure | Pure structural hollow section |
| Shapes | Round only | Round, Square, Rectangular |
| Strength | Medium–High | High (S355J2H is structural grade) |
| Impact Toughness | Optional | Mandatory −20°C |
| Fabrication Suitability | Good | Excellent |
| Best For | Heavy supports, columns, fabrication | Structures, trusses, frames, engineering |
✔ A106 = pressure-grade pipe used structurally for extra strength
✔ EN 10210 = dedicated structural hollow section
Both are used heavily in fabrication, structure erection, and mechanical assemblies.
Industrial Fabrication
Refineries & Petrochemical Plants
Construction & Civil Engineering
Infrastructure
Mechanical & Engineering Projects
ASTM A106 (Gr A / B / C) — Seamless Structural Pipe
A106 is originally a pressure-grade pipe, but widely used in structural fabrication because of:
Typical Structural Applications
Mechanical Properties
| Property | A106 Gr B |
|---|---|
| Yield Strength | 240–275 MPa |
| Tensile Strength | 415–550 MPa |
| Elongation | 20–30% |
| Fabrication | Excellent |
EN 10210 — Hot-Finished Structural Hollow SectionsThe preferred European standard for structural steel hollow sections.
Common Grades:
Available Shapes
| Shape | Range |
|---|---|
| Round | 21.3 mm – 508 mm OD |
| Square | 40×40 – 400×400 mm |
| Rectangular | 50×30 – 500×300 mm |
Typical Structural Applications
Key Mechanical Properties (S355J2H)
| Property | Value |
|---|---|
| Yield Strength | 355 MPa |
| Tensile Strength | 470–630 MPa |
| Impact Toughness | 27J @ −20°C |
| Hardness | 160–200 HB |
| Weldability | Excellent |
A106 Seamless Pipe — Structural Sizes (Commonly Used)
| NB Size | OD (mm) | SCH 40 WT (mm) | SCH 80 WT (mm) | SCH 160 WT (mm) |
|---|---|---|---|---|
| 1″ | 33.4 | 3.38 | 4.55 | 6.35 |
| 2″ | 60.3 | 3.91 | 5.54 | 8.74 |
| 3″ | 88.9 | 5.49 | 7.62 | 11.13 |
| 4″ | 114.3 | 6.02 | 8.56 | 13.49 |
| 6″ | 168.3 | 7.11 | 10.97 | 18.26 |
| 8″ | 219.1 | 8.18 | 12.70 | 23.01 |
| 10″ | 273.0 | 9.27 | 15.09 | 28.58 |
EN 10210 — Round Hollow Section Sizes
| OD (mm) | WT (mm) |
|---|---|
| 21.3 – 60.3 | 2.0 – 4.0 |
| 76.1 – 168.3 | 3.0 – 8.0 |
| 219.1 – 508 | 4.0 – 16.0 |
EN 10210 — Square Hollow Section Sizes
| Size (mm) | WT (mm) |
|---|---|
| 40×40 | 2.5 – 4.0 |
| 60×60 | 3.0 – 6.0 |
| 100×100 | 4.0 – 10.0 |
| 200×200 | 6.0 – 16.0 |
| 250×250 | 8.0 – 20.0 |
| 300×300 | 8.0 – 20.0 |
| 400×400 | 10.0 – 20.0 |
EN 10210 — Rectangular Hollow Section Sizes
| Size (mm) | WT (mm) |
|---|---|
| 50×30 | 2.5 – 4.0 |
| 80×40 | 3.0 – 6.0 |
| 150×100 | 4.0 – 10.0 |
| 250×150 | 6.0 – 16.0 |
| 300×200 | 8.0 – 20.0 |
| 500×300 | 10.0 – 20.0 |
A106 Seamless (Structural Use)
| Grade | Schedule | INR/kg | USD/kg |
|---|---|---|---|
| A106 Gr B | SCH 40 | ₹ 110 – ₹ 145 | $1.45 – $1.90 |
| A106 Gr B | SCH 80 | ₹ 120 – ₹ 160 | $1.55 – $2.10 |
| A106 Gr C | Heavy-SCH | ₹ 135 – ₹ 180 | $1.80 – $2.40 |
EN 10210 Structural Hollow Sections
| Grade | Type | INR/kg | USD/kg |
|---|---|---|---|
| S275J2H | SHS/RHS/Round | ₹ 68 – ₹ 88 | $0.90 – $1.20 |
| S355J2H | SHS/RHS/Round | ₹ 78 – ₹ 110 | $1.05 – $1.50 |
📥 Large fabrication qty pricing available separately.
✔ 730419 — Seamless (A106)
✔ 730661 — Square, rectangular hollow sections
✔ 730690 — Other structural tubes
Mechanical Tests
Impact Tests
NDT
Fabrication Suitability Tests
Documents Provided
Inox Steel India provides fabrication-ready services:
Structural fabrication demands high strength, dimensional accuracy, weld reliability, and long-term load-bearing capacity.
Inox Steel India supplies A106 seamless pipes and EN 10210 structural hollow sections that meet the highest engineering & fabrication standards worldwide.
Top Advantages of Choosing Inox Steel India
🏭 Industrial Fabrication
🏗 Construction & Infrastructure
🛢 Refineries & Petrochemical Plants
⚙️ Mechanical & Engineering Applications
🚢 Ports, Marine & Offshore
Inox Steel India is widely trusted by EPC contractors, structural engineers, machine builders, PEB fabricators, and industrial integrators.
✔ Export Packaging Includes:
🌍 Major Export Destinations
UAE • Saudi Arabia • Qatar • Oman • Kuwait • Bahrain
Kenya • Nigeria • Egypt • South Africa
Malaysia • Indonesia • Vietnam • Thailand
Italy • Spain • Poland • Netherlands • UK
If you are searching for a structural hollow section supplier near Alankar Cinema, Mumbai,
Inox Steel India offers:
Reliable partner for PEB Structures, Fabricators, EPC contractors, Plant builders, and Machinery manufacturers.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in, steel@inoxsteelindia.in
+91 9930796690
Because it offers 355 MPa yield strength + impact toughness at −20°C and excellent weldability.
Yes — EN 10210 is a higher-quality, hot-finished structural standard with better mechanical properties.
Yes — Inox Steel India regularly stocks heavy schedules for structural load-bearing work.
Yes — CNC cutting, bending & drilling available.
Yes — exported to GCC, Africa, Europe, Southeast Asia & UK.
100% — both A106 and EN 10210 have excellent weldability due to controlled CE%.
Inox Steel India supplies premium structural pipes & hollow sections for industrial fabrication, PEB structures, mechanical applications, and construction engineering.