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Your Leading Stainless Steel Bars Supplier

We supply high-quality stainless steel bars—including round, square, hexagonal, and flat bars—that meet major international standards such as ASTM A276, ASTM A479, EN 10088-3, and JIS G4303. We maintain extensive stock covering standard austenitic grades (304/304L, 316/316L, 321, 310S), martensitic/ferritic alloys (410, 420, 430, 444), and high-strength duplex and super duplex steels (2205, 2507, 904L, 17-4PH) to satisfy a wide range of engineering specifications.

30cr13 / 3Cr13 Hot Rolled Stainless Steel Round Bar
Material Grade：30Cr13 (GB/T 1220), 3Cr13. Equivalent Grades：AISI 420, ASTM 420, JIS SUS420J1, EN 1.4021 (X20Cr13). Standard：GB/T 1220, ASTM A276, ASTM A479, JIS G4303. Manufacturing Process：Hot
X20cr13 / 1.4021 Stainless Steel Round Bars
Name: X20cr13 / 1.4021 stainless steel round barsr. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as Your Requirements.
ASTM A276 304/316/316L Stainless Steel Round Bars
Our core advantage is building our own production factory, which enables independent control of the entire process from raw materials to finished products, ensuring quality; Professional team and
ASTM A276 Type 302 Stainless Steel Round Bar
Specificationa：ASTM A276 302 Stainless Steel Round Bar. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as Your
ASTM A276 Stainless Steel 201 Round Bar
Specificationa：ASTM A276 Stainless Steel 201 Round Bar. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as Your
304 Cold Drawn Stainless Steel Flat Bar
Specificationa：304 cold drawn stainless steel flat bar. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as Your
316l Stainless Steel Flat Bar
Specificationa：316l stainless steel flat bar. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as Your Requirements.
ASTM A479 431 Cold Drawn Bright Bar
Specificationa：ASTM A479 431 cold drawn bright bar. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Shape: Round. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as Your
ASTM A479 410 Polished Stainless Steel Rod
Specificationa：ASTM A479 410 polished stainless steel rod. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Shape: Round. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as
ASTM A479 Type 316L Polished Round Bar
Specificationa：ASTM A479 type 316L polished round bar . Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Shape: Round. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as
ASTM A479 316 Stainless Steel Round Bar
Specificationa：316 stainless steel round bar. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Shape: Round. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm. Length:as Your
ASTM A479 Gr 304 Stainless Steel Bright Bars
Specification:ASTM A479 Gr 304 stainless steel bright bars. Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS. Shape: Round. Technique: Cold Rolled. Thickness: 2mm-300mm. Width:1000mm-2000mm.

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Why choose us?

Diverse Product Forms & Sizes

Our flexible manufacturing capabilities support hot-rolled, forged, cold-drawn, centerless ground, and peeled/turned surface finishes. We offer customized supply across wide dimensional ranges—round bar diameters from 3 mm to 800 mm, square/hex sizes from 4 mm to 200 mm, and lengths up to 12 meters with precision cut-to-length services, ensuring tight tolerance control down to h8, h9, or h11.

Exceptional Order Reorder Rate

Driven by consistent product reliability, strict dimensional accuracy, and transparent lead times, our global customer reorder rate reaches an industry-leading 63%. We serve over 300 active long-term industrial partners in petroleum processing, marine hardware, pump shafting, and heavy machinery, consistently achieving a 98.5% on-time delivery record.

Quality Inspection

Every batch undergoes comprehensive quality verification supported by ISO 9001 standards, including 100% PMI chemical analysis, Ultrasonic Flaw Detection (UT per SEP 1921 / ASTM A388), mechanical property testing (tensile, yield, impact, hardness), and dimensional tolerances. Full EN 10204 3.1 Material Test Certificates (MTC) are issued, with optional 3.2 third-party inspection via SGS, BV, or Intertek.

Seaworthy Export Packaging

To prevent surface scratching, deformation, or moisture damage during transit, bars are wrapped in protective plastic film, edge-guarded, and secured in heavy-duty woven plastic bundles or fumigated wooden cases. Large-diameter turned or ground bars feature plastic end caps and surface anti-rust oil coatings, fully optimized for container loading or break-bulk ocean freight.

Types of Stainless Steel Bars：

Stainless steel square bar

Square stainless steel bar is widely used throughout the fabrication industry, typical applications include frame work, braces, trim, shafts, axles, fittings, instruments, gym equipment, awnings, structures, and more.

Stainless steel round bar

Stainless steel round bars provide a wide range of applicable uses and can be custom cut to your exact specifications. Stainless steel round bar is utilized throughout the many industries to make supports, braces, framework, shafts, and axles.

Hexagonal and hollow bars

Hexagonal and hollow bars are often used in weight-bearing scenarios and the fabrication of many common structural beam elements–including i beams, h beams, and c beams. However, hexagonal bars can also have machining uses similar to stainless steel rounds, allowing for rapid production of nuts and other fastene

Stainless steel flat bar

Flat stainless steel bar exceptional characteristics that make it an excellent choice for manufacturing various types of products including: Industrial tools, mechanical parts, structure construction, base plates, ornamental fence construction, and more.

Advantages of Stainless Steel Bars：

Hygiene:

Stainless steel rods are easy to clean and have various hygiene properties, making them a great choice for hospitals and the food industry when cleanliness and protection from harmful bacteria are essential.

Long service life:

Stainless steel rods are highly durable, require minimal maintenance, and reduce frequent replacements, which ultimately increase the lifespan of the product.

Recyclability:

Stainless steel rods are easily recyclable without losing their quality and performance. This helps in conserving natural resources and reducing energy consumption, making them a sustainable choice for industries.

High strength:

Has high strength and durability that offers the capability to withstand heavy loads and stress without breaking.

Corrosion resistance:

Highly resistant to corrosion due to the chromium content in it. Ideal for usage in harsh environments where higher corrosion resistance and strength are required.

Aesthetic appearance:

Provides a sleek and high-quality appearance; hence, popular for decorative applications and heavy-duty industrial use.

Resistance to heat:

Due to high heat resistance, it can maintain its strength and shape at the highest temperatures

Applications of Stainless Steel Bars：

Construction and infrastructure

Stainless steel bars are extensively used in the construction sector for structural supports, reinforcements, and frameworks. Their corrosion resistance ensures durability in outdoor applications such as bridges, buildings, and monuments. Additionally, they are often incorporated into architectural features like handrails, balustrades, and cladding, offering both strength and aesthetic appeal.

Automotive and transportation

In automotive and transportation industries, stainless steel bars are crucial for manufacturing components like shafts, axles, and fasteners. Their strength and resistance to corrosion make them ideal for high-stress applications in vehicles, ships, and airplanes. They are also used in producing exhaust systems and other parts exposed to high temperatures.

Food and beverage industry

Stainless steel bars are commonly used in food processing plants, breweries, and commercial kitchens due to their hygienic properties and ease of cleaning. They are integral to fabricating food storage containers, conveyor belts, and kitchen equipment. The non-reactive surface of stainless steel ensures that food products remain uncontaminated during processing.

Medical and pharmaceutical applications

In the medical and pharmaceutical industries, stainless steel bars are used to manufacture surgical instruments, medical devices, and hospital equipment. Their corrosion resistance, ease of sterilization, and ability to maintain cleanliness make them essential in environments that require stringent hygiene standards.

Marine industry

Stainless steel bars are widely used in the marine industry for the construction of boats, ships, and offshore structures. Due to their superior resistance to saltwater corrosion, they are ideal for components such as propeller shafts, rudders, and deck fittings. Stainless steel’s ability to endure harsh saline environments ensures long-lasting performance in marine applications.

Aerospace industry

The aerospace industry relies heavily on stainless steel bars for critical components that require both strength and lightweight properties. These bars are commonly used in the manufacturing of airplane landing gear, engine parts, and fasteners. Their ability to withstand extreme temperatures and resist corrosion ensures reliability in high-performance aerospace applications.

Product Parameters：

Material Grade	304 (UNS S30400), 304L (S30403), 316 (S31600), 316L (S31603)
Standard Compliance	- ASTM A276/A479 - EN 1.4301 (304), 1.4401 (316) - JIS SUS304/SUS316 - GB/T 1220
Dimensions	- Across Flats (AF): 3mm–100mm - Length: 1m–6m (Customizable up to 12m)
Tolerances	- AF: ±0.1mm (≤20mm), ±0.5% (>20mm) - Straightness: ≤1mm per 1m
Surface Finish	- Cold Drawn (Smooth) - Centerless Ground (Precision) - Polished (Mirror/Matte)
Theoretical Weight	- Formula (kg/m): (0.866 × AF² - 0.02) × 8.0 g/cm³ - Example: AF 10mm → 0.68 kg/m

Packaging and Shipping：

FAQ

Q: What are stainless steel bars?

A: Stainless steel bars are solid pieces of stainless steel, usually in a long, cylindrical or rectangular shape. They are used as raw materials in various manufacturing processes, such as machining, forging, and construction.

Q: How are stainless steel bars manufactured?

A: They can be manufactured through processes like hot rolling, cold drawing, or extrusion. Hot rolling involves heating the steel billet and passing it through rollers. Cold drawing is used for finer dimensional control and better surface finish.

Q: Are stainless steel bars magnetic?

A: It depends on the type of stainless steel. Ferritic and martensitic stainless steels are magnetic, while austenitic stainless steels like 304 and 316 are generally non - magnetic.

Q: What is the role of chromium in stainless steel bars?

A: Chromium is the key element that provides corrosion resistance. It forms a passive oxide layer on the surface of the steel, protecting it from rust and corrosion.

Q: Can stainless steel bars be welded?

A: Yes, they can be welded. However, proper welding techniques and filler materials need to be selected based on the type of stainless steel to ensure good weld quality.

Q: How are stainless steel bars stored to prevent corrosion?

A: They should be stored in a dry environment, preferably indoors. If stored outdoors, they should be covered to prevent exposure to moisture and corrosive elements.

We're professional stainless steel bars manufacturers and suppliers in China, specialized in providing high quality customized service. Be free to wholesale stainless steel bars in stock here and get free sample from our factory. For price consultation, contact us.

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