01 Flat Bars

Precision That Shapes Strength

Steel Hex Bars
01 Flat Bars

Precision That Shapes Strength

At Star Steel Co., our Flat Bars are crafted for strength, accuracy, and durability. Designed to perform across demanding industries, our range of stainless steel, carbon steel, and alloy steel flat bars meets global standards and delivers lasting reliability.

Key Features

  • Available in a wide range of sizes and grades (3mm to 800mm)
  • Excellent corrosion and heat resistance for industrial use
  • Smooth, polished surface finishes – bright, black, or custom options
  • Cut-to-size service with precise tolerances
  • High machinability and weldability, ideal for fabrication and construction

Applications

Our Flat Bars are engineered to support multiple industries including:

  • Construction & Infrastructure – beams, supports, and frames
  • Oil & Gas & Petrochemical – pressure vessels and pipelines
  • Automotive & Engineering – shafts, fasteners, and components
  • Shipbuilding & Fabrication – decks, platforms, and reinforcements

Why Choose Star Steel Co.?

  • Over four decades of expertise in metal supply and export
  • ISO & ASTM standard-compliant flat bars for global markets
  • Custom sizing, finishing, and heat treatment available on demand
  • Quick turnaround and nationwide delivery
  • Trusted by industries across India, Middle East, and Europe

Industries We Serve

Empowering industries like petrochemicals, oil & gas, shipbuilding, cement, heavy engineering, and manufacturing with reliable Flat Bar solutions that combine strength, precision, and long-term performance.

SPECIFICATION - FLAT BARS

Range: 3.17 MM TO 350 MM DIA
Materials: Stainless Steel Bars– SS Bars

ASTM / ASME SA 312 GR. TP
304 , 304L , 304H, 309S ,309H , 310S, 310H , 316 , 316TI , 316H , 316 LN , 317 , 317L , 321 , 321H , 347 , 347 H , 904L .
ASTM / ASME SA 358 CL 1 & CL 3
GR . 304 , 304L , 304H, 309S ,309H , 310S, 310H , 316 , 316H , 321 , 321H , 347.

Duplex Stainless Steel Bars - Duplex SS Bars
ASTM / ASME SA 790 UNS NO S 31803 , S 32205 , S 32550 , S 32750 , S 32760 .

Carbon Steel Bars – CS Bars
ASTM / ASME A 53 GR. A & B , ASTM A 106 GR. A , B & C . API 5L GR. B , API 5L X 42 , X 46 , X 52 , X 60 ,X 65 & X 70 .
ASTM / ASME A 691 GR. A , B & C

Alloy Steel Bars – AS Bars
ASTM / ASME A 335 GRP 1 , P 5 , P 9 , P 11 , P 12 , P 22 , P 23 , P 91

ASTM / ASME A 691 GR 1 CR , 1 1/4 CR , 2 1/4 CR , 5 CR , 9CR , 91

Flat Bar specification

Manufacturer of Brushed Stainless Steel Flat Bar in India, check Flat Bar sizes and price list

Standard API, ASME, SUS, DIN, EN, GB, UNS, ASTM, AISI
Sizes 3mm to 800mm diameter
Length 12 Random Lengths Long Bars: 15-20 Random Lengths
Finish Cold Drawn Turned, Bright Drawn, Polished, Rough Turned, Centreless Ground, Bright, Annealed, Smooth Turned, Peeled, Grinding, Black
Tolerances H12, H11, K11, K12, H10, H8, H9, H13, K10, K9
Surface Finish 1D, HL, 8K, NO.4, 2D, NO.1, NO.3, 2B, BA
Production Method Rolled / Forged
Characteristics
  • Cold Working of Flat Bar: Good
  • Corrosion Resistance: Excellent
  • SS Flat Bar Heat Resistance: Good
  • Heat Treatment : Poor
  • SS Flat Bar Hot Working: Fair
  • Machinability: Good
  • SS Flat Bar Weldability: Very Good
Value Added Services
  • Heat Treatment
  • Production Bar Cutting
  • Chemical Milling
  • Turn, Ground, and Polishing
  • Surface Machining
  • Shearing
  • Precision Grinding
  • Trepanning
  • Rigidizing
  • Custom Packing
Other available forms Forging, Profiles, T-Bar, Rod, Hollow, Triangle, Channel, Threaded, Ingot, Rounds, Rectangle, Blocks, Billet, I/H, Half-Round, Angle, Precision-Ground
Export to Saudi Arabia, Peru, Italy, Malaysia, USA, Vietnam, Thailand, Egypt, Brazil, Ireland, Spain, Kuwait, Dubai, Singapore, Canada, Oman, Indonesia, Russia, Korea, Mexico, Canada, etc
Our Stainless Steel Flat Bar conforms to Standard ISO 15156/ NACE MR0175

Chemical Composition – Stainless Steel Flat Bar (AISI 304L)

We offers a widest range of Steel Hex Bar and are strategically located to service anywhere in India:

Chemicals (Wt. in %)
Carbon <= 0.03
Silicon 1
Manganese <= 2
Sulphur 0.030
Phosphorus <= 0.045
Nickel 8 – 11
Chromium 18 – 20
Niobium Not required
N <= 0.10
08 FAQ

Frequently Asked Questions

08 FAQ

Frequently Asked Questions

Flat Bars are used in construction, manufacturing, and engineering for making supports, brackets, frames, and other structural components.

Yes. At Star Steel Co., we offer cut-to-size options with surface finishes like bright, polished, or black, tailored to your specific project needs.

We supply Flat Bars in stainless steel, carbon steel, duplex steel, and alloy steel, all tested for strength and precision.

Reach out to us for reliable, high-quality steel solutions tailored to your needs.

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