Verify premium grades, cold-rolled specifications, and flat profile solutions manufactured directly inside our modern processing facilities.
High-grade corrosion resistant alloy coil processed with close tolerances for marine and chemical application environments.
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ASTM standard flat bar stocks exhibiting optimized mechanical strength and superior acid resistance properties.
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Heavy-duty structural hot rolled steel coils suitable for structural re-rolling, fabrication, and structural tubes.
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Premium 304 raw coil stocks ready for precision stamping, forming, and specialized industrial deep drawing applications.
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High-machinability centerless ground round bars processed for mechanical engineering and precision manufacturing.
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Slip-resistant patterned checker sheets suited for heavy industrial flooring, staircases, and transport equipment.
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Titanium-stabilized grade 321 alloy plates featuring remarkable stability under extreme thermal cycling conditions.
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Super-mirror reflective surface finished slitting coils processed for decorative trim and cladding.
Verify Mill SpecsAISI 304 (UNS S30400) remains the cornerstone of the modern stainless steel industry, accounting for over 50% of all stainless steel produced globally. Due to its balanced austenitic structure, containing approximately 18% Chromium and 8% Nickel, it offers excellent corrosion resistance, formability, and weldability. These critical properties make it indispensable for global supply chains ranging from petrochemical infrastructure to sanitary food processing lines.
As global industries demand higher material efficiency, wholesale sourcing of 304 sheet metal has evolved. Buyers are no longer looking simply for raw sheets; they require precision tolerances, clean mechanical behavior during deep drawings, and compliant raw materials that prevent intergranular corrosion. This demands factories that strictly manage alloy compositions and implement state-of-the-art inline cooling and leveling procedures.
To guarantee structural stability and prevent sensitization, our factory maintains tight chemical limits during batch melting:
| Element | Standard Value (%) | OES Control (%) |
|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.05 |
| Chromium (Cr) | 18.00 - 20.00 | 18.20 - 18.50 |
| Nickel (Ni) | 8.00 - 10.50 | 8.10 - 8.35 |
| Manganese (Mn) | ≤ 2.00 | 1.65 - 1.80 |
Why sourcing from Wuxi's premier steel hub offers unparalleled advantages for global procurement managers.
Located in Wuxi, Jiangsu, OES Metal operates at the focal point of the global stainless steel industry. This clustering enables seamless raw material supply chains, rapid processing scaling, and lower manufacturing overheads compared to Western alternatives.
We feature multi-stage finishing stations, offering raw materials in No. 1 hot-rolled finish, 2B cold-rolled uniform finish, BA (Bright Annealed) mirror finish, and decorative structural checker options. Customized edge slitting is executed to strict geometric tolerances.
In response to global demands, OES Metal has developed smooth logistics corridors to the CIS, Europe, Middle East, and the Americas. Whether shipping through the Port of Shanghai or via the China-Europe Railway Express, our supply chain ensures timely, trackable cargo delivery.
We specialize in processing four primary forms of high-grade stainless steel products to meet exact architectural, structural, and mechanical requirements.
Engineered for high-temperature service and structural components requiring titanium stabilization.
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Hollow structural section combining torsional resistance and structural cleanliness.
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Precision-controlled atmosphere annealing provides an ultra-clean interior surface finish.
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Standard specification for seamless and straight-seam welded austenitic pipes.
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Heavy thickness plates suitable for high temperature pressure vessels and exhausts.
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Embossed traction tread sheet commonly deployed for marine decking and transport flooring.
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Super-duplex alloy providing extreme yield strength and chloride resistance.
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Optimized 50/50 austenitic-ferritic microstructure for heavy mechanical engineering.
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Stabilized precision cold rolled strip suitable for stamping and deep draw operations.
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Ultra-thin, tight tolerance strips for consumer electronics and precision hardware.
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Polished highly reflective surfaces optimized for dynamic edge slitting procedures.
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Structural grade raw coils, mill scale treated, and optimized for post-rolling processes.
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Cold drawn profiles exhibiting high yield strengths, straightness, and consistent diameters.
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Perfect for nuts, bolts, hydraulic fittings, and other repetitive high-speed machining parts.
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Solid square bars configured for industrial frames, shafts, and custom engineering designs.
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Compliant to global mechanical standards for structural engineering and fasteners.
Read SpecsOur factory is certified to execute rigorous checks on every batch. Our QA process covers:
OES Metal, established in 2014, is a recognized professional steel enterprise specializing in precision manufacturing. Our primary production facility is located in the industrial metal hub of Wuxi, Jiangsu, utilizing a 5,000 square meter factory space and employing over 100 dedicated manufacturing professionals. Our facility operates high-capacity leveling, slitting, protective film coating, and advanced laser-cutting machinery every day to fulfill global industrial purchase orders.
To date, OES Metal has successfully exported thousands of tons of high-grade steel sheets, bars, and coils across North America, South America, the Gulf countries, Africa, the CIS, and Southeast Asia. With active delivery channels across 59+ countries, our logistics team coordinates smooth customs clearance processes, ensuring that import specifications conform precisely to local standards.
Designed for heavy industries. Verified materials ensuring high-precision tolerances and uniform chemical properties.
Superior marine grade bar stocks for high salinity structures and petrochemical frames.
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High yield structural bars perfect for shafts, gears, and fasteners.
Inquire PriceUltra-thin cold rolled strips made to precise thickness specs for hardware springs.
Inquire PriceHigh reflectivity mirror finishes for high-end trim and decorative profiles.
Inquire PriceHexagonal stock optimized for high throughput CNC automatic lathes.
Inquire PriceHigh structural integrity square profiles for robust fabrication frameworks.
Inquire PriceFully compliant standard bar specifications widely utilized across industrial projects.
Inquire PriceSmooth surface finish bars optimized for thermal cycling environments.
Inquire PriceEnsure long-term durability and structural integrity of raw materials in heavy industrial installations.
When welding 304 stainless steel, exposure to temperatures within the 425 to 870°C range can cause Chromium Carbide precipitation at the grain boundaries. This sensitization leaves the steel vulnerable to corrosion. To prevent this, OES Metal offers low-carbon 304L variants or titanium-stabilized 321 grades. These options keep your welded fabrications structurally sound under corrosive operating conditions.
Selecting the proper surface finish is critical to your project. Standard cold-rolled 2B finishes work well for structural components. For food processing and sanitary systems, we recommend a polished No. 4 finish or a reflective BA surface. Smooth finishes make it harder for contaminants to stick to the metal, facilitating easier cleanups and preventing localized pitting.
We supply complete EN 10204 3.1 Mill Test Certificates with every shipment. These records detail chemical composition, yield and tensile strength, elongation, and hardness test results. Providing this chemical and physical trace keeps your supply chain audit-ready and ensures the materials perform reliably in high-stress industrial applications.
Get answers to technical questions about chemical properties, thickness tolerances, export logistics, and processing capabilities.
The primary difference is the Carbon content limit. AISI 304 contains a maximum of 0.08% Carbon, whereas AISI 304L is restricted to a maximum of 0.03% Carbon. The lower carbon profile of 304L minimizes harmful chromium carbide precipitation during welding, which prevents intergranular corrosion in the heat-affected zone of welded structures without requiring post-weld annealing.
While 304 is classified as an austenitic stainless steel (which is non-magnetic in its annealed state), cold working processes (such as rolling, drawing, or stamping) can trigger a partial phase transformation from austenite to martensite. Martensite is ferromagnetic, which is why cold-rolled sheets or drawn bars often show a slight magnetic pull. Solution annealing at 1040-1100°C restores the fully austenitic, non-magnetic structure.
Our factory processes cold-rolled 304 sheets in strict compliance with ASTM A480 standards. For standard gauges (0.5mm to 3.0mm), our precision rolling mills maintain thickness tolerances within ±0.02mm to ±0.05mm. This consistency ensures smooth automatic feeding and predictable stamping results for automated CNC fabrication lines.
We provide full logistical support for CIS destinations. We ship via sea freight to Saint Petersburg, Novorossiysk, or Vladivostok, and utilize direct rail links via the China-Europe Railway Express (routes passing through Manzhouli, Khorgos, or Alashankou). We supply all required export documentation, including bilateral Certificates of Origin and detailed packing lists, to ensure smooth customs clearance.
For sanitary applications, we recommend a polished No. 4 finish or a BA (Bright Annealed) mirror finish. These finishes create a smooth, low-roughness surface that resists bacterial buildup and scale adhesion. They are also easy to clean and sanitize, making them ideal for commercial kitchens, dairy facilities, and food processing lines.
304 stainless steel offers good general corrosion resistance, but it is susceptible to pitting and crevice corrosion when exposed to seawater or high-chloride environments. For direct marine contact, we recommend upgrading to molybdenum-alloyed grade 316 or 316L, or using duplex alloys like 2205 to prevent chloride stress corrosion cracking.
Our quality control facility is equipped for Positive Material Identification (PMI) chemical testing, tensile and yield strength testing, Rockwell and Vickers hardness testing, intergranular corrosion testing, and ultrasonic thickness mapping. All tests are documented in our standard EN 10204 3.1 Mill Test Certificate.
To protect finishes like 2B, BA, No. 4, or Mirror during transport, we apply a double-layer PE or laser-cut protective film (ranging from 70 to 100 microns thick) to the face of each sheet. Sheets are then secured on reinforced wooden skids, wrapped with moisture-barrier paper, and strapped with heavy steel bands to prevent shifting inside the shipping containers.
Stay updated on metallurgy trends, processing techniques, and steel selection guidelines from our engineering team.
Learn how to select the right thickness and surface finish for standard 4x8 stainless steel sheets across architectural and industrial applications.
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A detailed comparison of chemical composition, corrosion limits, and cost factors to help you select the right alloy for your environment.
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Evaluate the high-temperature oxidation resistance of 309 versus 304 stainless steel in furnace and heat treatment applications.
Read Technical GuideExplore our selection of specialized structural bars, seamless tubes, and thin-gauge coils manufactured for high-stress applications.
High-precision hexagonal profile stocks optimized for high-speed machining and fastener production.
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Solid structural grade 304 bars manufactured to strict tolerances for heavy fabrication work.
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Extruded seamless pipes built to handle high-pressure fluid transfer and corrosive chemicals.
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Titanium-stabilized bright drawn bars designed for high-temperature and structural applications.
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Precision-drawn square bar stocks engineered for mechanical components and machinery frames.
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TIG-welded 321 tubing offering excellent thermal and mechanical stability under high temperatures.
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Cold-rolled coil feedstock offering high strength and reliable forming characteristics.
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Ultra-thin, tight tolerance strips engineered for high-precision components and electronic parts.
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