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What Is Stainless Steel Flat Bar？
Product Definition：
Stainless steel flat bars are long structural products with a rectangular cross-section, consisting of a width greater than the thickness. This simple yet versatile design provides excellent strength and stability, making flat bars the preferred choice for structural framing, brackets, supports, reinforcements, and decorative applications in construction, industrial, and architectural projects.
Specification Notation：
Stainless flat bars are specified by （thickness）× （width） in millimeters.Example: 5×40mm = flat bar with 5mm thickness and 40mm width
Example: 10×100mm = flat bar with 10mm thickness and 100mm width
Key Characteristics：
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Feature Description Structural Efficiency Rectangular cross-section provides excellent load-bearing capacity and stability Corrosion Resistance Excellent resistance to atmospheric, chemical, and chloride exposure – grade dependent-3 Versatility Available in hot rolled and cold drawn finishes to suit various requirements Excellent Weldability Austenitic grades (304, 316) offer superior weldability for fabrication Multiple Manufacturing Methods Hot rolled, cold drawn, or forged – choose based on tolerance and surface requirements-5 Wide Size Range Thickness: 1–150mm, Width: 5–500mm-5 100% Recyclable Environmentally friendly with no loss of properties Flat Bar vs Other Structural Sections：
Feature Flat Bar Angle Bar Channel Bar Cross-section Rectangle L-shape U-shape Best For Brackets, supports, reinforcements, trim Bracing, corners Guides, tracks Strength-to-Weight Good Good Good Typical Use Light to medium structures Light to medium structures Medium structures Key Specifications – Stainless Steel Flat Bar
Parameter Specification / Range Remarks Standards ASTM A276, A484, A479, A582, ASME SA276, ASME SA484, GB/T 1220, GB4226-5 Others on request Austenitic Grades 201, 202, 301, 302, 304, 304L, 304H, 309S, 310S, 316, 316L, 316Ti, 317L, 321, 347-5-4 Most common for structural use Ferritic Grades 409, 410, 420, 430, 439 Cost-effective, magnetic-3 Duplex Grades 2205 (S31803/S32205) High strength, excellent SCC resistance Super Austenitic 904L, 254SMO Extreme corrosion resistance Precipitation Hardening 17-4PH (630) High strength, heat treatable Thickness 1 mm – 150 mm-5-2 Custom on request Width 5 mm – 500 mm-2 Custom on request Length 2 m, 3 m, 4 m, 6 m, or custom-5 Up to 12m available Surface Finish Black, pickled, bright, polished, sandblasted, hairline-5-2 See Screen 7 for details Manufacturing Process Hot rolled / Cold drawn / Cold rolled / Forged-2 – Density 7.70 – 8.00 g/cm³ Grade dependent Testing PMI, tensile, hardness, dimensional inspection Mill cert EN 10204 3.1 Packaging Steel strapped bundles, wooden pallet Seaworthy, ISPM 15
Wuxi Yansheng Technology Co., Ltd. – Company Profile
Wuxi Yansheng Technology Co., Ltd. is a comprehensive technology enterprise specializing in high-quality metal raw material supply and precision processing services. Located in Wuxi City, a major steel distribution center in China, the company leverages the mature industrial chain advantages of the Yangtze River Delta region to provide professional material solutions to global customers.
As a technology-driven enterprise, Yansheng Tech maintains strategic cooperation with several well-known steel mills (such as TISCO, Baosteel, JISCO, Dongfang Special Steel, etc.) and is an authorized distributor of these mills. Our main products include stainless steel (304/316/BA/EP pipe), carbon steel, silicon steel, copper, aluminum and other materials in the form of sheets, pipes, coils, as well as custom-processed parts.
Core Business Highlights:
Material Supply: We maintain sufficient stock inventory, offering 304/316 stainless steel sheets, pipes, coils, API 5L casing, electrical steel, and more. We also accept orders for special steel grades and non-standard specifications.
Precision Processing: Equipped with imported mirror polishing machines, water jet cutting machines, high-precision slitting/leveling lines, large CNC milling machines, boring machines, and more. We provide customized services including BA/EP pipe finishing, medium plate polishing, matte finishing, embossing, plasma cutting, etc.
Main Applications: Our products are widely used in industries such as solar energy, pressure vessels, boilers, electric heating equipment, petrochemicals, environmental protection machinery, pharmaceutical and food processing, and new energy vehicles.
Our processing center is located in Xishan District, Wuxi City, covering nearly 10,000 square meters, with an experienced technical and service team. We adhere to the business philosophy of "Technology First, Quality Oriented, Service Supreme" , providing 24/7 warehousing and logistics support as well as comprehensive after-sales service. Yansheng Tech is committed to being your trusted long-term partner.
Frequently Asked Questions (FAQ)
Q1. What products do you mainly supply?
We mainly supply stainless steel (304/316/BA/EP pipes), carbon steel, silicon steel, copper, aluminum, and other materials in sheets, pipes, and coils. Customized processing services are also available.
Q2. Do you have stock available?
Yes, we maintain sufficient stock for most standard specifications. For non-standard sizes, we can accept orders with reasonable lead time.
Q3. Can you provide MTC (Mill Test Certificate)?
Yes, we provide MTC for every shipment. Third-party inspection (SGS, TÜV, BV, etc.) is also available upon request.
Q4. Do you support video inspection before shipment?
Yes, we fully support video inspection. You can also arrange an agent or third party to visit our factory for on-site inspection before shipment.
Q5. What are your main export markets?
We export to Southeast Asia, the Middle East, Europe, Africa, and South America. We have rich experience in international trade and export documentation.
Q6. What payment terms do you accept?
We accept T/T (wire transfer), L/C at sight (irrevocable), and sometimes a combination of T/T deposit + L/C balance. Payment terms are negotiable based on order size and customer history.
Q7. Can you provide samples?
Yes, samples are available for most standard products. For custom sizes, we may need to produce small batch samples. Sample cost and shipping are usually borne by the customer, but can be discussed.
Q8. What is your typical lead time?
For stock items: 7–10 days after order confirmation. For custom production: 20–30 days, depending on the specification and quantity.
Q9. What quality certifications do you have?
We provide MTC with every shipment. Our partner mills are ISO9001 certified. We can also assist with third-party inspections (SGS, TÜV, BV) upon request.
Q10. How can I get a quotation?
Please send us your material grade, specification (size, thickness, length), quantity, and preferred trade term (FOB, CIF, DAP, etc.). We will reply with a detailed quotation within 24 hours.
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