Custom Stainless Steel Flat Bars 201 304 316L - China Suppliers & Factory for Industrial Applications
Stainless Steel Flat Bar
Stainless steel flat bars are rectangular-sectioned long stainless steel profiles, formulated with core alloying elements like chromium and nickel. Boasting a balanced mix of toughness and rigidity, plus superior weather and corrosion resistance, they have emerged as essential load-bearing and structural components across construction, machinery manufacturing, and chemical production, catering to diverse industrial and civil engineering needs.
🛡️ Corrosion Resistance
304-grade variants suit regular humid environments; 316L grades resist long-term acid-alkali corrosion for demanding conditions.
💪 Strength & Durability
High tensile strength and bending toughness — bears heavy loads without permanent deformation.
✨ Surface Customization
Available in pickling, brushing, 2B, BA, Hairline, 8K & No.4 finishes balancing utility and aesthetics.
🔧 Easy Fabrication
Supports cutting, welding, bending and tailored assembly — service life far exceeds traditional carbon steel flat bars.
These profiles have broad applications: in construction, they act as base materials for curtain wall keels and guardrail supports; in machinery manufacturing, they form equipment frames and transmission parts; in chemical sectors, they serve as anti-corrosion structures for pipeline supports and tank reinforcement; they also become durable hardware for kitchens/bathrooms and components like street light bases or manhole cover frames for municipal projects, integrating practicality and long-term durability.
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Installation Notice: Prior to installation, degreasing and rust removal pre-treatment is mandatory. Assembly methods (welding, bolting, riveting) should be selected by scenario — bolting is preferred for high-corrosion chemical settings to avoid weld corrosion, while heavy-load parts need reinforcing shims and welded joints require professional passivation post-installation. Avoid direct carbon steel contact (to prevent galvanic corrosion), reserve expansion joints for outdoor setups, and apply anti-corrosion coatings for strong acid environments.
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Maintenance Tips: Daily maintenance is low-cost and straightforward — clean with neutral detergent, treat minor rust with specialized removers followed by passivation, inspect connection tightness regularly, and store in moisture-proof, ventilated spaces to avoid deformation.
Product Parameters
| Grade | 300 Series | Shape | Square |
| Standard | JIS | Steel Grade | 310S, 410, 316L, 316, 321, 314, 309S, 304, 409L, 304L, 904L |
| Surface | 2B | Tolerance | ±1% |
| Place of Origin | Shandong, China | Delivery Time | 15-21 days |
| Model Number | 904L 2205 2507 304 316 310 309 201 430 | Brand Name | maxi |
| Application | Construction | Processing Service | Bending, Welding, Decoiling, Punching, Cutting |
| Special Use | Valve Steels | Type | Flat |
| Dimensions | Customised | Key Word | Stainless Steel Flat Bar |
| Edge | Slite Edge | Color | Bright White |
| Surface Finish | 2B / BA / HAIRLINE / 8K / NO.4 | Price Term | L/C T/T (30% Deposit) |
| Product Name | 201/304/304L/316/316L/309/309S/904L Stainless Steel Flat Bar | Packing | Standard Sea-worthy Packing |
| Trading Terms | FOB CIF CFR EXW Etc. |
Packing And Shipping
Frequently Asked Questions
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What is the difference between 304 and 316L stainless steel flat bars?
304-grade stainless steel flat bars are suitable for regular humid and mildly corrosive environments, offering excellent general-purpose performance. 316L grades contain added molybdenum, providing superior resistance to long-term acid-alkali and chloride corrosion, making them the preferred choice for chemical processing, marine, and food-grade applications.
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Can stainless steel flat bars be customized in size and surface finish?
Yes. Dimensions are fully customizable to meet specific project requirements. Available surface finishes include 2B, BA, Hairline, 8K, and No.4, allowing customers to select the appropriate finish based on aesthetic and functional needs.
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What processing services are available for stainless steel flat bars?
We offer a full range of processing services including bending, welding, decoiling, punching, and cutting. These services allow flat bars to be tailored for specific structural and assembly applications across construction, machinery, and chemical industries.
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How should stainless steel flat bars be installed to prevent corrosion?
Before installation, degreasing and rust removal pre-treatment is required. In high-corrosion chemical environments, bolting is preferred over welding to minimize weld corrosion risk. Avoid direct contact with carbon steel components to prevent galvanic corrosion, and apply professional passivation treatment to all welded joints after installation.
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What are the typical applications of stainless steel flat bars?
Stainless steel flat bars are widely used as curtain wall keels and guardrail supports in construction; equipment frames and transmission parts in machinery manufacturing; pipeline supports and tank reinforcement in chemical industries; kitchen and bathroom hardware; and municipal components such as street light bases and manhole cover frames.
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What are the payment and shipping terms available?
We support multiple payment terms including L/C and T/T (with 30% deposit). Trading terms available include FOB, CIF, CFR, and EXW. All products are packed in standard sea-worthy packaging, with a standard delivery time of 15–21 days.