Round Bars
KJ Steel Rolling Mills
Stainless Steel Round bars
At KJ Steel, we are a trusted round bars supplier offering high-quality steel round bars for diverse industrial applications. Known for precision, durability, and versatility, our steel round bars are the backbone of many key industries including automotive, engineering, construction, fabrication, defense, railways, and energy sectors. Round bars serve as a fundamental raw material, used in manufacturing bolts, nuts, rivets, shafts, axles, gears, connecting rods, and machine tools. From micro-sized fasteners to heavy-duty machinery parts, KJ Steel delivers alloy steel round bars, carbon steel round bars, bright bars, and forged bars that meet the toughest demands.
We have the widest range in terms of grades and sizes.
- Size Range: 12 mm to 100 mm (standard & custom sizes)
- Widest Grade Range: From basic carbon steels to advanced specialty steels including SUP series grades
- Precision & Quality: Manufactured under strict metallurgical controls to meet global standards
- Customization: Made-to-order solutions with heat treatment, machining & special finishes
- Industries Served: Automotive, defense, aerospace, construction, energy & more
- Diameter: 12 mm to 100 mm
- Supply Condition: Hot rolled, forged, bright bar finish, cut-to-length
As a leading round bars supplier in India, KJ Steel offers the widest variety of grades to suit every industrial requirement.
Special Spring Steel Grades (SUP Series)
- SUP 3– Spring steel, used in small engine valve springs and seat springs
- SUP 6– Ideal for automotive suspension & seat springs
- SUP 9– High fatigue resistance, widely used in automotive leaf springs
- SUP 9A– Variant of SUP 9 with improved mechanical strength
- SUP 11 / SUP 11A– Used for coil springs, torsion bars, and suspension components
- SUP 12– Known for toughness and resistance, suitable for heavy spring applications
Carbon Steels
- Low Carbon Steel (for general engineering & fabrication)
- Medium Carbon Steel (shafts, bolts, gears)
- High Carbon Steel (cutting tools, wear parts)
Alloy Steels
- EN8, EN19, EN24 – Engineering steels for heavy machinery, shafts, and fasteners
- EN31– Bearing steel, high wear resistance
- EN36– Case hardening steel for gears & crankshafts
- 42CrMo4– High-strength, heat-treated alloy steel
Tool & Die Steels
- D2, D3 – Tool steels for high wear resistance applications
- OHNS – Oil hardened steel for cutting tools
Chrome & Manganese Steels
- Chromium Moly Steels for high-stress environments
- Chrome Vanadium Steels for springs and automotive components
Other High-Demand Grades
- Case Hardening Steels– EN353, EN354
- Spring Steels– 65Mn, Silico-Manganese Steels
- Free Cutting Steels– 11SMn30 for high machinability
- Micro-Alloyed Steels– With vanadium, niobium additions for specialized industries
- Boron Steels– Enhanced hardenability, used in automotive parts
Applications of Our Steel Round Bars
KJ Steel’s round bars are trusted across industries:
- Automotive Industry: Shafts, axles, crankshafts, propeller shafts, and suspension parts (e.g., SUP 9 round bars for leaf springs)
- Engineering & Machinery: Gears, rollers, fasteners, machine tool components
- Construction & Infrastructure: Reinforcements, supports, and foundation equipment
- Fastener Manufacturing: Bolts, nuts, rivets, pins (micro to heavy-duty)
- Energy & Power: Turbine shafts, windmill components, boilers
- Railways & Aerospace: High-strength, heat-treated precision parts
Types of Round Bars We Manufacture & Supply
- Forged Round Bars – Heavy-duty industrial applications
- Bright Round Bars – Smooth finish, precision machining
- Alloy Steel Round Bars – Strength, durability, heat resistance
- Carbon Steel Round Bars – Cost-effective, general purpose
- Customized Grades – Tailor-made to customer specifications
Choose KJ Steel – Your Reliable Round Bars Supplier
With decades of expertise and a wide product portfolio, KJ Steel stands as a trusted partner for industries worldwide. From SUP series spring steels (SUP 9, SUP 11) to EN-series alloy steels, carbon steels, and tool steels, we ensure that our steel round bars deliver top performance, reliability, and cost-effectiveness.
Contact KJ Steel today to order premium alloy steel round bars, spring steel SUP grades, carbon steel bars, and customized solutions at the best prices.
