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Hot Rolled Round Bars Manufacturer, Supplier & Exporter – Inox Steel India

Inox Steel India is a trusted manufacturer, supplier, and exporter of Hot Rolled Round Bars in carbon steel and alloy steel grades, supplied as per ASTM, EN, IS, and DIN standards.

Our hot rolled round bars are widely used in structural fabrication, engineering, construction, machinery manufacturing, and heavy industrial applications, where strength, availability, and cost efficiency are key decision factors.

With strong sourcing and stocking capabilities, Inox Steel India supplies hot rolled black round bars in a wide range of sizes for domestic projects and export markets, ensuring mill-tested quality and complete traceability.

Table of Contents

What Are Hot Rolled Round Bars?

Hot rolled round bars are solid cylindrical steel bars produced by rolling steel billets at high temperatures (above recrystallization temperature). This process allows steel to be easily shaped, resulting in robust bars with good mechanical strength and uniform structure.

Compared to cold drawn or bright bars, hot rolled bars offer:

  • Lower cost
  • Better availability in larger diameters
  • Improved suitability for welding and fabrication

Manufacturing Process Overview

  1. Steel Billet Selection: Carbon steel or alloy steel billets are selected based on grade requirements such as ASTM A36, IS 2062, EN8, EN19, or EN24.
  2. High-Temperature Rolling: Billets are heated and rolled into round bar form at high temperatures.
  3. Cooling & Straightening: Bars are air-cooled and straightened to standard mill tolerances.
  4. Cutting to Length: Supplied in random lengths or cut-to-length as per customer requirement.
  5. Inspection & Testing: Dimensional checks and chemical verification ensure standard compliance.

This process ensures bars suitable for fabrication, machining, and structural use.

Key Advantages

  • Cost-effective solution for large-scale projects
  • Good strength and toughness
  • Excellent weldability for fabrication work
  • Wide availability in large diameters
  • Suitable for cutting, bending, and machining
  • Faster delivery compared to processed bars

These advantages make hot rolled round bars a preferred choice for heavy engineering units.

Grades & Standards Available

Inox Steel India supplies hot rolled round bars in the following categories:

  • Carbon Steel Hot Rolled Round Bars – ASTM A36, A105, IS 2062, EN8
  • Alloy Steel Hot Rolled Round Bars – EN19, EN24, AISI 4140, AISI 4340

Applicable Standards: ASTM A36 / A29 / A105 | EN 10025 / EN 10083 | IS 2062

MASTER TECHNICAL DATA SHEET – HOT ROLLED ROUND BARS

Parameter Hot Rolled Carbon Steel Round Bars Hot Rolled Alloy Steel Round Bars
Product Form Solid Round Bar Solid Round Bar
Manufacturing Process Hot Rolled Hot Rolled
Material Category Carbon Steel Alloy Steel
Common Grades ASTM A36, A105, A350, IS 2062, EN8 EN19, EN24, 4140, 4340
ASTM / EN Standards ASTM A36 / A29 / A105 ASTM A29 / A322
EN / DIN Equivalent EN 10025, EN 10083 EN 10083-3
Diameter Range 6 mm – 500 mm 6 mm – 450 mm
Standard Sizes (mm) 8, 10, 12, 16, 20, 22, 25, 32, 40, 50, 65, 80, 100 Same as Carbon Steel
Sizes in Inches 1/4”, 3/8”, 1/2”, 3/4”, 1”, 1.5”, 2”, 3”, 4” Same as Carbon Steel
Length Random / Fixed / Cut-to-Length Random / Fixed / Cut-to-Length
Surface Condition Black / Mill Finish Black / Mill Finish
Density ~7.85 g/cm³ ~7.85 g/cm³
Tensile Strength 400 – 550 MPa 650 – 1000 MPa
Yield Strength ≥ 250 MPa ≥ 450 MPa
Elongation ≥ 20% ≥ 12%
Dimensional Tolerance Commercial Hot Rolled Commercial Hot Rolled
Straightness Standard Mill Straightness Standard Mill Straightness
Heat Treatment As Rolled / Normalized As Rolled / Q&T (if required)
Weldability Excellent Good (Preheat may be required)
Machinability Moderate Moderate to Good
Typical Applications Structural, fabrication, shafts, supports High-load shafts, engineering parts
Testing Chemical, Mechanical, UT (on request) Chemical, Mechanical, UT
Certification EN 10204 3.1 EN 10204 3.1
HSN / HS Code 7214 / 7228 7228
Export Suitability Domestic & Export Export

Key Factors to Consider When Selecting Hot Rolled Round Bars

Structural vs Machining:
Hot rolled bars are ideal for structural frameworks and heavy-duty fabrication.
Grade Selection:
ASTM A36 is commonly used for general construction; alloy grades are used for higher strength.
Size Availability:
Hot rolled bars are readily available in large diameters where cold drawing is difficult.
Cost Consideration:
Significantly more economical than cold drawn or bright bars for bulk structural use.
Weldability:
Carbon steel hot rolled bars offer excellent weldability for onsite project fabrication.

Global & Indian Demand Overview

India:
Widely used in infrastructure projects, fabrication yards, and steel structures across Mumbai and Pune.
GCC & Middle East:
High demand for structural steel supports and industrial framework components.
Africa & Europe: Used in construction, mining, and heavy industrial engineering applications.

Inox Steel India supports these markets with bulk supply capability and export-ready documentation.

Applications of Hot Rolled Round Bars

Industry / Sector Typical Applications Common Grades
Construction & Infrastructure Columns, supports, anchor rods ASTM A36, IS 2062
Fabrication & Structural Frames, brackets, base plates ASTM A36, EN8
Engineering & Machinery Shafts, pins, rollers EN8, EN19
Oil & Gas (Non-critical) Structural supports, skids A36, A105
Mining & Material Handling Conveyor parts, wear components EN8, EN19

These applications demand reliable mechanical strength and easy weldability.

Hot Rolled Round Bar Size Range & Standard Dimensions

Inox Steel India supplies hot rolled round bars in a wide range of metric and inch sizes.

Standard Diameter Range (mm)
6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 22 mm, 25 mm, 32 mm, 40 mm, 50 mm, 65 mm, 80 mm, 100 mm and above up to 500 mm

Length Options

  • Random Lengths
  • Fixed Lengths
  • Custom Cut-to-Length (as per requirement)

Surface Condition

  • Hot Rolled Black / Mill Finish suitable for cutting, welding, and structural use.

Hot Rolled Round Bar Weight Calculation

The standard formula used for estimating hot rolled round bar weight:
Weight (kg/m) = (D² × 0.006165)
Where D = Diameter in mm.

Hot Rolled Round Bar Price – Indicative Range

Grade Approx. Price INR/kg Typical Use
ASTM A36 / IS 2062 ₹ 55 – ₹ 75 Structural & fabrication
EN8 ₹ 65 – ₹ 95 Engineering components
EN19 ₹ 95 – ₹ 140 High-strength applications

Prices are indicative and subject to change based on billet rates and size.

HSN / HS Code for Hot Rolled Round Bars

  • HSN Code: 7214 (Carbon Steel) / 7228 (Alloy Steel)

Testing & Quality Assurance

All bars supplied by Inox Steel India undergo quality verification to ensure suitability.

Quality Checks Conducted

  • Chemical Composition Verification
  • Mechanical Property Testing (on request)
  • Dimensional & Visual Inspection

Documentation Supplied

  • EN 10204 3.1 Mill Test Certificate
  • Heat Number Identification
  • Third-Party Inspection (on request)

These checks ensure consistent quality in engineering projects.

Why Choose Inox Steel India for Hot Rolled Round Bars

Inox Steel India is a dependable hot rolled round bar manufacturer and supplier, providing carbon and alloy steel bars for construction and heavy engineering.

Our Core Strengths

  1. Ready stock of hot rolled black round bars in multiple diameters
  2. Supply as per ASTM, EN, IS, and DIN standards
  3. Wide availability in metric and inch sizes
  4. Custom cut lengths for fabrication and machining
  5. Complete EN 10204 3.1 certification with heat traceability
  6. Bulk supply capability for projects and exports

Our focus is on reliable sourcing and fast dispatch for time-bound projects.

Industries & Applications We Serve

Industry Application Preferred Grade / Standard
Oil & Gas Refineries Heat Exchangers · Process Lines · Condensers SS 316 / 316L
Pharmaceutical & Biotech Sterile Lines · Reactors · Piping Loops SS 304L / 316L
Power & Energy Boiler Tubes · Superheaters · Steam Condensers SS 310 / 321
Food & Beverage Dairy Pipelines · Sugar Processing SS 304 / 304L
Marine & Desalination Sea Water Lines · Offshore Risers SS 316L
Chemical & Petrochemical Corrosive Process Lines · Reactors SS 316 / 347

Each project demands precision — we match the grade, schedule, and coating exactly to service conditions.

Export Readiness & Packaging

All hot rolled round bars are packed to ensure safe handling and efficient transport:

  • Bundled with steel straps
  • Mill finish with protective oil (on request)
  • Wooden sleepers or pallets for export shipments
  • Clear marking with grade, diameter, heat number, and standard

Export Destinations:
UAE, Saudi Arabia, Oman, Qatar, Nigeria, South Africa, Europe, and other global markets.

Dispatch is handled through JNPT (Mumbai), Mundra, and Hazira ports.

Hot Rolled Round Bar Supplier Near Alankar Cinema, Mumbai

If you are looking for a hot rolled round bar supplier near Alankar Cinema, Mumbai, Inox Steel India offers immediate availability, bulk supply support, and nationwide as well as export delivery.

Get a Quick Quote

Hot Rolled Round Bars Manufacturer & Supplier in India – A36, EN8, EN19

Inox Steel India

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

Email

alloy@inoxsteelindia.in, steel@inoxsteelindia.in

Phone

+91 9930796690

Frequently Asked Questions (FAQs)

Common equivalents include IS 2062 E250 and EN 10025 S275 (subject to application requirements).

Sizes range from 6 mm to 500 mm, including standard inch sizes.

 

Prices typically range from ₹55 – ₹140 per kg, depending on grade and size.

 

HSN 7214 for carbon steel and 7228 for alloy steel.

 

Yes, we offer custom cut-to-length services as per drawings or project needs.

Inox Steel India is a leading hot rolled round bar manufacturer and supplier in India. ASTM A36, EN8 & EN19 hot rolled round bars in standard sizes with competitive price.