Premium Fasteners & Round Bars supplied across Europe, Russia, Saudi Arabia, Oman, Qatar & the USA!

  • Mumbai 400004 - India.
  • +919819823285
  • info@starentps.com

Trusted ISO Certified Supplier of Duplex Steel , High Nickel Alloy, Mild Steel, Alloy Steel, and Stainless Steel Round Bars Available in Centerless Ground, Forged, Hot Rolled, Cold Drawn, Peeled, Polished, Bright, and Black Surface Finishes.

We are a leading manufacturer, stockist, and exporter of premium-grade Round Bars, serving both domestic and international markets with a strong commitment to quality, precision, and customer satisfaction. Established with a vision to become a global metal solutions provider, our company has earned ISO 9001:2015 certification and adheres to stringent quality management protocols across every stage of production. With well-equipped infrastructure, advanced machinery, skilled workforce, and in-house testing laboratories, we offer products that meet the diverse needs of industries such as oil & gas, petrochemicals, power generation, heavy engineering, construction, shipbuilding, railways, and defense. Our global clientele extends across Europe, Russia, Saudi Arabia, Oman, Qatar, and the United States, where we have built long-standing business relationships by consistently delivering excellence in metallurgy, logistics, and service.

Our Round Bars are engineered with precision and are available in a wide range of diameters from 6mm to 100mm and lengths ranging from 1000mm to 6000mm (custom lengths available upon request). We offer a variety of surface finishes such as Bright Drawn, Black, Peeled, Polished, and Centerless Ground, ensuring suitability for both aesthetic and functional applications. Tolerances are available as per H9, H11, h13, or customer-specific requirements. The material portfolio includes Stainless Steel (SS304, SS304L, SS316, SS316L, SS310, SS321, SS347, SS410, SS904L) conforming to ASTM A276 / A479, Carbon Steel like C45 as per EN 10083 / DIN 1.0503, Mild Steel (IS 2062), Alloy Steels such as EN8 (080M40), EN9, EN19 (709M40 / AISI 4140), EN24 (817M40 / AISI 4340), and Tool Steels like D2 and H13 per ASTM A681. We also supply Free Cutting Steel (EN1A - 230M07) and Bright Steel (EN3B - 070M20). All our grades comply with international standards including ASTM, AISI, EN, DIN, IS, and JIS, ensuring global compatibility and traceability. Each bar is produced with high dimensional accuracy and mechanical strength, suitable for machining, forging, structural fabrication, and precision component manufacturing.

We prioritize quality at every level, from raw material selection to final dispatch. All Round Bars undergo rigorous mechanical and chemical testing to ensure they meet or exceed required specifications. This includes Tensile Strength, Yield Strength, Elongation, Brinell/ Rockwell Hardness Testing, along with Ultrasonic Testing, Magnetic Particle Inspection, Visual & Dimensional Checks, and Positive Material Identification (PMI). The chemical composition of each grade strictly adheres to the specified norms under ASTM, IS, or EN standards, ensuring corrosion resistance, weldability, toughness, and machinability as required. Our facility is equipped with modern spectrometers and lab instruments to test elements like Carbon, Chromium, Nickel, Manganese, Sulphur, Phosphorus, and Molybdenum. Each delivery is backed with full documentation including Mill Test Certificates (MTC) as per EN 10204 3.1 / 3.2, NABL-accredited lab reports, third-party inspection (TPI) approvals, and compliance certificates to assure product reliability and regulatory conformity.

We understand the critical importance of safe handling and transit for Round Bars, especially for international clients. Therefore, all products are packaged with utmost care using HDPE wraps, VCI paper, plastic-capped ends, wooden pallets, steel-strapped bundles, or customized export-grade packing as per buyer guidelines. Special attention is given to marking, labeling, and barcoding, ensuring traceability during transportation. With strong logistics partnerships, we ensure fast and efficient delivery via road, sea, and air, supported by complete export documentation including Commercial Invoice, Packing List, Test Certificate, Certificate of Origin (COO), and Bill of Lading. Our round bars are regularly exported to high-demand markets including Europe (Germany, Italy, France), Russia, Saudi Arabia, Oman, Qatar, and the United States, where industries rely on our products for use in automotive components, oilfield equipment, construction structures, shafts, fasteners, precision tools, and general fabrication work. Our professional export team ensures a seamless and hassle-free experience from order confirmation to final delivery.

Buy High-Quality Steel Round Bars Ranging from 3mm to 600mm Diameter and Custom Lengths up to 12 Meters. Offered in Various Materials Including Carbon Steel (ASTM A105, A29), Stainless Steel (ASTM A276, A479), Alloy Steel (ASTM A182), High Nickel Alloys (ASTM B564, B637) and more – Manufactured as per International ASTM Standards for Superior Quality and Performance.

Steel Round Bars Specifications

SpecificationDetails
Product TypeRound Bars
Size RangeDiameter: 6mm to 100mm (Custom sizes available)
Length1000mm to 6000mm (Standard), Cut Length as per requirement
TypesHot Rolled, Cold Drawn, Peeled & Polished, Centerless Ground, Forged, Black, Bright
Material & GradeStainless Steel: SS304, SS316, SS310, SS321, SS347, SS410, SS904L (ASTM A276 / A479)
Mild Steel: IS 2062 Grade A/B
Carbon Steel: C45 (DIN 1.0503 / EN 10083)
Alloy Steel: EN8 (080M40), EN19 (709M40 / AISI 4140), EN24 (817M40 / AISI 4340)
Tool Steel: D2, H13 (ASTM A681)
Free Cutting Steel: EN1A (BS 970 230M07)
Bright Steel: EN3B (BS 970 070M20)
StandardsASTM A276, A479, A681, IS 2062, EN 10083, BS 970, DIN, JIS
Surface FinishBright Drawn, Peeled, Polished, Black, Rough Turned
ToleranceH9, H11, h13 or as per request
End TypePlain End, Chamfered, Threaded (on request)
Testing & InspectionUltrasonic Test, Chemical & Mechanical Testing, Dimensional Inspection, PMI Test, Third Party Inspection (TPI)
CertificationMill Test Certificate (MTC) as per EN 10204 3.1 / 3.2
ApplicationsMachining, Forging, Construction, Structural Components, Automotive Parts, Fabrication, Shafts, Tools

Types of Steel Round Bars

Hot Rolled Round Bars

Manufactured by hot rolling, offering excellent strength and durability.

Cold Drawn Round Bars

Precision-made with a smooth surface finish, ideal for machining.

Peeled & Polished Round Bars

Enhanced surface finish with high dimensional accuracy

Centerless Ground Round Bars

Extremely precise tolerance with a fine, smooth surface.

Forged Round Bars

High-strength bars for heavy-duty industrial applications.

Bright Round Bars

High-quality, smooth surface bars used in precision applications.

Black Round Bars

Raw, unfinished bars used in industrial applications requiring further processing.

Surface Finish of Round Bars

SRE Slit rolled edge BD Bright drawn
HRAP Hot rolled annealed and pickled CF Cold finished
RT Rough turned/peeled P&T Peeled and turned
PR Peeled and reeled ST Smooth turned
P Polished CD Cold drawn
HF Hot finished CG Centreless ground

Round Bar Dimensions

US Bar Metric Japanese Canadian/ASTM
Diameter(Inch) Bar Size Diameter (millimeter) Stainless Steel Round Bar Size Diameter (millimeter) Stainless Steel Round Bar Size Diameter (millimeter2) Stainless Steel Round Bar Size
0.250 #2 5 5 6 6 100 10M
0.375 #3 5.5 5.5 10 10 200 15M
0.500 #4 6 6 13 13 300 20M
0.625 #5 7 7 16 16 500 25M
0.750 #6 8 8 19 19 700 30M
0.875 #7 9 9 22 22 1000 35M
1.000 #8 10 10 25 25 1500 45M
1.125 #9 11 11 29 29 2500 55M
1.250 #10 12 12 32 32
1.375 #11 14 14 35 35
1.500 #12 16 16 38 38
1.625 #13 18 18 41 41
1.750 #14 20 20 44 44
1.875 #15 22 22 48 48
2.000 #16 25 25 51 51
2.250 #18 28 28 57 57
32 32
36 36
40 40
44 44
50 50

Round Steel Bars Weight

Diameter Weight Chart Dia Weight Chart
(mm) per metre (kg) (in) per metre (kg)
3mm 0.06 1/8″ 0.06
4mm 0.10 3/16″ 0.14
5mm 0.16 1/4″ 0.25
6mm 0.22 5/16″ 0.39
7mm 0.30 3/8″ 0.56
8mm 0.40 7/16″ 0.77
10mm 0.62 1/2″ 1.00
12mm 0.89 9/16″ 1.22
14mm 1.22 5/8″ 1.56
15mm 1.40 11/16″ 1.89
16mm 1.59 3/4″ 2.25
18mm 2.01 7/8″ 3.07
20mm 2.48 1″ 4.03
22mm 3.00
24mm 3.57
25mm 3.88

Worldwide Supply of Round Bars

Russia, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates (UAE), Yemen, United States of America (USA), Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, Vatican City.

Round bars - Circles & Rings - Fasteners Manufacturers Exporter of round bars, Circles & Rings, Fasteners, Pipes & Tubes Suppliers MSTAR ENTERPRISES

As an ISO 9001:2015, 14001:2004, and 18001:2007 certified company, we specialize in catering to the stringent demands of industries such as Oil & Gas, Petrochemical, Power Generation, and Nuclear Sectors.

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