Large Diameter Stainless Steel Round Bar is forged from high-quality stainless steel material, featuring robust overall structure, strict dimensional stability, excellent corrosion resistance and superior load-bearing capacity. With solid metallographic structure and reliable mechanical properties, it is widely used in heavy-duty mechanical manufacturing, large-scale engineering structures, industrial pressure equipment and heavy-load component production.
Material Type :
Stainless Steel (304/316L/410/420)Diameter Range :
50mm – 500mmCustomizable :
YesOrder(MOQ) :
2TSpecifications
Large Diameter Stainless Steel Round Bar is manufactured by adopting advanced forging, hot rolling and solid solution treatment processes, which endows the product with dense internal structure, high structural rigidity and remarkable pressure resistance. Different from conventional small-size round bars, its oversized diameter design meets heavy-load operation and large structural assembly demands, while maintaining great toughness, impact resistance and long-term structural stability under harsh working conditions.
Multiple mainstream material grades such as 304, 316L, 310S, 420 and 2205 are supplied to cope with high temperature, strong corrosion, marine and heavy industrial environments. This series of large diameter round bars is commonly applied in heavy machinery shafts, petrochemical equipment, power industry facilities, engineering support structures, mining accessories and large container components.
We can provide complete specifications of ultra-large diameter and customized length options, together with professional services like sawing cutting, surface treatment and deep machining. All products can be tailored to meet diverse heavy industry construction and customized mechanical processing requirements.
Large Diameter Stainless Steel Round Bar is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
| Grade | Grade Equivalent | Mechanical Properties | Size Range | Chemical Composition (Typical, %) |
|---|---|---|---|---|
| 304 | UNS S30400
|
Tensile ≥515 MPa
|
Diameter 20–500 mm
|
C≤0.08, Cr 18.0–20.0
|
| 304L | UNS S30403
|
Tensile ≥485 MPa
|
Diameter 20–500 mm
|
C≤0.03, Cr 18.0–20.0
|
| 316 | UNS S31600
|
Tensile ≥515 MPa
|
Diameter 20–500 mm
|
C≤0.08, Cr 16.0–18.5
|
| 316L | UNS S31603
|
Tensile ≥485 MPa
|
Diameter 20–500 mm
|
C≤0.03, Cr 16.0–18.5
|
| 321 | UNS S32100
|
Tensile ≥515 MPa
|
Diameter 25–500 mm
|
C≤0.08, Cr 17.0–19.0
|
| 310S | UNS S31008
|
Tensile ≥515 MPa
|
Diameter 30–500 mm
|
C≤0.08, Cr 24.0–26.0
|
| 2205 Duplex | UNS S32205
|
Tensile ≥655 MPa
|
Diameter 25–500 mm
|
C≤0.03, Cr 22.0–23.0
|
| 2507 Super Duplex | UNS S32750
|
Tensile ≥800 MPa
|
Diameter 30–500 mm
|
C≤0.03, Cr 24.0–26.0
|
| 904L | UNS N08904
|
Tensile ≥490 MPa
|
Diameter 25–500 mm
|
C≤0.02, Cr 19.0–23.0
|
|
Note: If you do not find a Large Diameter Stainless Steel Round Bar that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
Video
Factory
FAQs
Q: What types and standards of stainless steel do you mainly supply?
A: We mainly supply a wide range of stainless steel products including stainless steel pipes/tubes (seamless and welded), plates, coils, strips, and bars. Common grades include 304/L, 316/L, 321, 310, 410, 430, 2205 (Duplex), and 904L, which are widely used in construction, chemical processing, food equipment, and marine engineering. All stainless steel products comply with international standards such as ASTM, JIS, and EN. We can also provide corresponding material test certificates (MTC) and support customized specifications according to customer project requirements.
Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?
A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.
Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?
A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.
Q: What are your delivery times and logistics solutions for overseas customers?
A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.
Q: As a new customer, how do I begin cooperation? Can you provide samples for testing?
A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.
|
Note: If you do not find a Large Diameter Stainless Steel Round Bar that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
Precision Stainless Steel Round Bar is manufactured from high-quality stainless steel with excellent dimensional accuracy, smooth surface finish, and stable mechanical properties. It is widely used in precision machining, mechanical components, industrial equipment, and engineering applications where high strength, corrosion resistance, and reliable performance are required.
Details
Precision Ground Stainless Steel Round Bar is crafted from premium stainless steel raw materials with professional precision grinding treatment, featuring tight dimensional tolerance, ultra-smooth ground surface, outstanding wear resistance and superior corrosion resistance. It owns uniform texture and stable mechanical performance, perfectly fitting high-precision machining, precision parts manufacturing, hydraulic equipment, aerospace accessories and other industrial scenarios demanding high surface quality and precise size control.
Details
Bright Polished Stainless Steel Round Bar is fabricated from high-quality stainless steel with premium bright polished finishing, delivering high dimensional precision, sleek glossy surface, outstanding rust resistance and steady mechanical strength. It is widely adopted in architectural decoration, sanitary fittings, hardware components and general industrial fields that demand attractive appearance and long-lasting corrosion protection.
Details
Large Diameter Stainless Steel Round Bar is forged from high-quality stainless steel material, featuring robust overall structure, strict dimensional stability, excellent corrosion resistance and superior load-bearing capacity. With solid metallographic structure and reliable mechanical properties, it is widely used in heavy-duty mechanical manufacturing, large-scale engineering structures, industrial pressure equipment and heavy-load component production.
Details
Corrosion Resistant Stainless Steel Round Bar is produced with high-purity stainless steel alloy materials, featuring exceptional anti-rust and anti-corrosion performance, stable mechanical properties and dependable structural durability. With optimized alloy composition and fine metallographic structure, it is well-suited for chemical, marine, humid and harsh industrial environments that require long-term corrosion protection.
Details
Forged Stainless Steel Round Bar is made of premium stainless steel billets through professional forging craftsmanship, delivering high structural density, outstanding tensile strength, and excellent mechanical toughness. It features stable internal structure, strong pressure resistance and reliable durability, ideal for heavy-duty industries, high-load components and critical mechanical forging applications.
Details
Request A Quote
Scan to Wechat/Whatsapp :
