Explore our factory-direct precision rolled sheets, coils, structural bars, and industrial piping manufactured under strict ISO 9001 and ASTM standards.
Premium Grade 304 stainless steel solid bars compliant with ASTM A276 standards. Excellent machinability, structural yield, and corrosion resistance.
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Heavy-duty hot-rolled stainless steel coils designed for secondary slitting, deep drawing, and heavy industrial structural fabrication.
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Anti-slip diamond and teardrop pattern stainless steel checker plates. Ideal for industrial flooring, walkways, and marine deck applications.
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Precision cold-drawn 304 hexagon steel bars tailored for high-speed CNC machining of fasteners, valves, and mechanical fittings.
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Titanium-stabilized Grade 321 sheet engineered for extreme high-temperature operating environments up to 900°C with anti-intergranular corrosion.
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Molybdenum-alloyed marine-grade 316/316L sheets offering superior pitting resistance against chlorides, acids, and harsh chemical agents.
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High-precision cold-rolled 304 coils with tight thickness tolerances, bright surface finish, and exceptional drawability for stamping.
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Seamless and welded 316L pipes engineered for high-pressure chemical fluid transfer, offshore pipelines, and pharmaceutical processing.
View Product DetailsWhy 3mm (11-Gauge / ~0.118 inch) is the universal golden standard for structural strength, workability, and thermal resilience across worldwide engineering sectors.
In global metallurgical procurement, the 3mm stainless steel sheet (often categorized as 11-gauge in imperial standards or standard 3.0mm nominal thickness in metric regions) represents the structural tipping point between thin gauge sheet metal and heavy plate steel. At 3mm, austenitic and duplex stainless steels provide superior rigidity, structural deflection resistance, and pressure tolerance while retaining key mechanical workability—allowing direct laser cutting, precision press-brake bending, and TIG/MIG welding without burn-through.
Whether utilized by EPC contractors in Western Europe, industrial equipment manufacturers in North America, or infrastructure builders across the CIS and Middle East, 3mm steel sheets remain the single highest-demand thickness for industrial enclosures, pressure vessel skins, architectural cladding, and marine bulkheads.
With global industrial automation and green energy transitions accelerating, the demand for high-integrity 3mm stainless sheets has grown by over 6.8% annually. Industrial procurement managers are increasingly bypassing regional intermediaries to establish direct sourcing channels with verified Chinese mill suppliers capable of providing high-volume rolling consistency, custom slitting, and certified material traceability (EN 10204 3.1 MTRs).
Key global growth drivers include expanding LNG storage terminals, food and beverage processing plant modernizations, automotive chassis weight-reduction programs, and severe-environment marine vessel construction requiring marine-grade 316L and Duplex 2205 alloys.
Selecting the optimal alloy composition to maximize operational lifespan, mechanical yield, and stress corrosion resistance.
Understanding alloy thermodynamics and chemistry is essential for project engineers. Below is an engineering comparison of the primary stainless steel grades produced at our Wuxi processing facility.
| Steel Grade | EN / DIN Standard | Chemical Composition Key (%) | Yield Strength ($R_{p0.2}$) | Tensile Strength ($R_m$) | PREN Number | Primary Industrial Use |
|---|---|---|---|---|---|---|
| AISI 304 / 304L | 1.4301 / 1.4307 | 18Cr - 8Ni - <0.03C | ≥ 210 MPa | 520 - 720 MPa | ~19.0 | Food equipment, general fabrication, architectural trim. |
| AISI 316 / 316L | 1.4401 / 1.4404 | 16.5Cr - 10Ni - 2.1Mo | ≥ 240 MPa | 530 - 680 MPa | ≥ 25.0 | Marine environments, chemical vessels, coastal hardware. |
| AISI 321 | 1.4541 | 17Cr - 9Ni - Ti (5x C) | ≥ 220 MPa | 520 - 700 MPa | ~19.5 | Exhaust manifolds, high-temp heat exchangers (up to 900°C). |
| Duplex 2205 | 1.4462 | 22Cr - 5Ni - 3Mo - 0.18N | ≥ 450 MPa | 650 - 880 MPa | ≥ 34.0 | Oil & gas separators, offshore platforms, high-chloride tanks. |
| Super Duplex 2507 | 1.4410 | 25Cr - 7Ni - 4Mo - 0.27N | ≥ 550 MPa | 750 - 1000 MPa | ≥ 42.0 | Desalination plants, chemical tankers, subsea piping skin. |
The Pitting Resistance Equivalent Number (PREN = %Cr + 3.3x%Mo + 16x%N) dictates how a 3mm sheet will endure harsh chloride environments. While 304 is ideal for non-saline conditions, 316L and Duplex grades actively resist localized pitting and crevice corrosion under marine splash conditions.
Grade 321 incorporates Titanium at five times the carbon content. This prevents chromium carbide precipitation during welding at temperatures between 425°C and 850°C, eliminating intergranular corrosion in thermal exhaust systems.
Duplex 2205 provides double the yield strength of standard austenitic grades. Utilizing 3mm 2205 allows structural designers to down-gauge component weight while retaining higher structural load capacity.
Technical guidelines for engineers cutting, forming, and welding 3mm stainless steel sheet stock.
Fiber lasers (4kW - 12kW) with High-Pressure Nitrogen ($N_2$ at 14–18 bar) yield oxide-free, burr-free edges. Kerf width ranges between 0.15mm – 0.22mm.
Minimum internal bend radius $R \ge 1.5t$ (4.5mm) for 304/316L. For Duplex 2205, set $R \ge 2.0t$ (6.0mm) to accommodate higher springback allowances.
Available in 2B (Cold rolled, annealed, pickled), No.4 (Satin brushed), 8K Mirror (Buffed reflective), and No.1 (Hot rolled pickled) finishes.
Strict adherence to EN 10088-2 & ASTM A480. Thickness tolerance: ±0.05mm. Width/Length tolerance: ±0.5mm for custom cut-to-length sheets.
How industrial sectors across key global markets deploy 3mm stainless steel sheets to solve critical material challenges.
In high-salinity regions like the Arabian Gulf and Southeast Asian coastlines, standard carbon steel degrades within months. Offshore oil platforms and desalination plants utilize 3mm 316L and Duplex 2205 sheets for structural enclosures, splash zone paneling, cable tray supports, and filtration housings. The 3mm wall thickness provides high mechanical impact resistance against wave forces while eliminating rust scaling.
Strict FDA and EU sanitary mandates require non-porous, non-reactive surfaces. Processing plants deploy 3mm 304 and 316L sheets with No.4 sanitary polished finishes for mixing vats, conveyor sidewalls, pasteurization vessels, and sterile cleanroom wall systems. The 3mm gauge ensures smooth CIP (Clean-In-Place) washdowns without surface warping from thermal shock.
Fleet manufacturers in North America and East Asia integrate 3mm stainless steel checker plates and cold-rolled sheets into heavy commercial trailer flooring, battery housing frames for electric buses, and fuel tank straps. The high yield strength of 3mm stainless steel handles dynamic load stress and road salt exposure effortlessly.
Headquartered in Wuxi, Jiangsu—China's stainless steel capital—OES Metal combines massive raw material stock with advanced precision cutting.
By maintaining direct strategic partnerships with primary steel mills including TISCO, Baosteel, and Tsingshan, OES Metal secures premium stainless coil stock at optimized mill prices. This enables us to provide global buyers with high-grade 3mm sheets at wholesale prices unmatchable by overseas stockists.
Our 5000 square meter Wuxi processing center operates platform fiber laser cutters, dynamic leveling lines, automatic coil slitting rigs, and surface polishing units daily. We offer custom dimensions, edge deburring, and specialized protective PVC films (laser-film or heavy-duty PE film) applied automatically.
Exporting steel across oceans requires absolute protection. Every bundle of 3mm sheet is packed using waterproof craft paper, steel angle edge protectors, VCI anti-corrosion film, and mounted on fumigated wooden pallets or heavy steel frames to guarantee zero sea-water or bending damage during transit.
Next-generation innovations shaping stainless steel performance, sustainability, and ultra-precise fabrication.
The global steel sector is undergoing a decarbonization transition. OES Metal is integrating green hydrogen-reduced iron feedstock and Electric Arc Furnace (EAF) technologies powered by renewable energy, reducing the carbon footprint per ton of finished 3mm stainless sheet by up to 45%.
Implementing real-time AI computer vision on our cold-rolling lines allows instant microscopic surface scanning. Any micro-cracks, oil pitting, or gauge deviations are detected and isolated automatically at line speeds exceeding 100 meters per minute.
Developing lean duplex grades (e.g., 2101 / 2304) to replace nickel-heavy 304/316 grades. These next-gen 3mm sheets offer superior strength at lower raw material costs, insulating project budgets from global nickel price volatility.
Guaranteeing 100% compliance with international standards and client engineering specifications.
Every batch of 3mm sheet shipped by OES Metal is accompanied by an authentic Mill Test Report (MTR) detailing heat number chemical heat analysis, mechanical yield, tensile strength, elongation percentage, and hardness testing.
We welcome independent third-party inspection agencies to inspect dimensions, ultrasonic soundness, surface quality, and conduct PMI (Positive Material Identification) chemical verification prior to ocean vessel loading.
Our manufacturing processes align fully with ASTM A240 / A240M, EN 10088-2, JIS G4305, and ASME SA240 pressure vessel codes, ensuring seamless installation across all target destination markets.
OES Metal, established in 2014, is a famous professional steel company specialized in producing stainless steel products. Our factory is located in Wuxi, Jiangsu, with more than 100 employees and a 5000 square meter factory, capable of running platform processing equipment every day for manufacturing, cutting, packaging, and other work.
You will be impressed by our superior quality control services in technology, packaging, and delivery. OES Steel has exported thousands of tons of high-quality STEEL to North America, South America, Gulf countries, Africa, CIS, and Southeast Asia. The products have been exported to more than 50 countries and regions.
OES Metal ensures that you receive the highest quality products and services from start to finish, not only in production, but also in material, weight, size, and surface.
Seamless & welded 304, 316L, and 321 piping for pressure and structural use.
Cold-rolled and hot-rolled sheets from 0.3mm up to heavy plates in various finishes.
Precision slitting coils, bright annealed strips, and wide master coils.
Round, hexagon, square, and flat bars drawn to exact engineering tolerances.
Precision Manufacturing • Pursuing Excellence
Are you looking for a durable, corrosion-resistant stainless steel sheet that won't fail in demanding industrial environments? Discover standard sheet sizing, weights, and grade selection.
Ever wonder why some stainless steel lasts forever while others rust? The secret lies in molybdenum additions and exposure to chloride environments.
Among various austenitic stainless steels, 309 offers distinct high-temperature oxidation resistance advantages compared to standard 304 grade steel.
Direct answers to technical, commercial, and logistics questions commonly asked by procurement managers.
Using the formula for austenitic stainless steel (density ~7.93 g/cm³):
$\text{Weight} = \text{Thickness (mm)} \times \text{Width (m)} \times \text{Length (m)} \times 7.93$
For a 3mm sheet measuring 1.219m x 2.438m: $\text{Weight} \approx 3 \times 1.219 \times 2.438 \times 7.93 = \mathbf{70.66\text{ kg (approx 155.8 lbs)}}$.
For coastal or marine environments (within 5 miles of salt water) or chemical processing plants, 316L is strongly recommended over 304. Grade 316L contains 2.0% - 3.0% Molybdenum, which increases its Pitting Resistance Equivalent Number (PREN) from ~19.0 to >25.0, shielding the sheet from pitting corrosion caused by airborne chlorides.
Yes. Our Wuxi facility is equipped with high-power CNC fiber laser cutting systems capable of processing DXF/DWG CAD drawings directly. We maintain cutting tolerances within ±0.1mm, offer edge deburring, counter-sinking, and precision press-brake bending up to 6 meters in length.
We produce 3mm sheets in multiple mill finishes: 2B (Smooth cold-rolled standard), No.1 (Hot rolled pickled for heavy industrial framing), No.4 / HL (Brushed satin finish with protective PE film for architectural panels), and 8K Mirror (Highly polished reflective surface for specialized decorative applications).
For standard stock sizes (1219x2438mm, 1500x3000mm in 304/316L), our Minimum Order Quantity (MOQ) is 1 ton. Custom cut sizes or specialized Duplex grades require 3 to 5 tons. Factory dispatch occurs within 7 to 10 days, with direct vessel transit times ranging from 14 to 35 days depending on the target global seaport.
Explore our extended lineup of specialized duplex sheets, seamless pipes, bright drawn tubes, and cold-rolled precision coils.
High-strength duplex 2205 sheet combining double the yield strength of austenitic steel with exceptional resistance to stress corrosion cracking.
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Cold-drawn seamless 304 pipe manufactured to strict pressure vessel standards. Smooth internal bore and high burst pressure capacity.
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Titanium-stabilized 321 welded tubing engineered for high-temperature exhaust stacks, furnace lines, and thermal power equipment.
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Ultra-clean bright annealed stainless steel tubing featuring an ultra-smooth internal mirror finish for sanitary and semiconductor gases.
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Heavy-wall square structural tubing. Combines structural load capacity with aesthetic stainless appeal for architectural frameworks.
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Ultra-thin gauge precision stainless steel coils slit to custom narrow widths with tight thickness tolerances down to ±0.005mm.
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Marine-grade 316/316L cold-rolled master coils ready for continuous stamping, roll-forming, and high-precision laser processing.
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Cold-finished marine grade 316 flat bars complying with ASTM A276 specifications. Precise edge geometry and corrosion resistance.
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Oes Steel