Hot Rolled Black Polished Price ASTM 201/304/316/2205/310S Duplex Stainless Steel Round Bar/Rod

Our hot - rolled black polished duplex stainless steel round bars are a premium offering in the market. These bars are crafted with precision, meeting multiple international standards such as ASTM, AISI, GB, JIS, DIN, and EN. They are part of the 300 Series grade, which is well - known for its excellent corrosion resistance and durability.

The surface treatment of these round bars is complete. The hot - rolling process gives the bars a strong and dense internal structure. Subsequently, the black polishing not only enhances the aesthetic appeal of the bars but also provides an additional layer of protection against surface oxidation and minor scratches. The smooth, polished surface makes it easier to clean and maintain, ensuring that the bars look great and perform well over an extended period.

• Hot Rolling: This is the initial step in the production process. Hot rolling at high temperatures allows the steel to be shaped easily into the round bar form. It refines the grain structure of the steel, improving its mechanical properties such as strength and toughness. The hot - rolled bars have a more uniform composition throughout, which is crucial for consistent performance in various applications.

• Cold Rolling: After hot rolling, some bars may undergo cold rolling for further refinement. Cold rolling can improve the surface finish and dimensional accuracy of the bars. It also enhances the hardness and tensile strength of the steel, making the bars more suitable for applications where high - precision and high - strength are required.

• Shape: The round shape of these bars is ideal for a wide range of applications. It provides uniform stress distribution, making it suitable for use in structural components, shafts, and fasteners. The round cross - section also allows for easy machining and welding, enabling manufacturers to create complex parts with relative ease.

• Grade: As part of the 300 Series, these duplex stainless steel round bars offer a combination of austenitic and ferritic stainless steel properties. Different grades such as 201, 304, 316, 2205, and 310S have their unique characteristics. For example, 304 grade is widely used due to its good corrosion resistance and formability, while 316 grade offers enhanced resistance to pitting and crevice corrosion, making it suitable for marine and chemical applications.

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Our round bars comply with multiple international standards including ASTM, AISI, GB, JIS, DIN, and EN. This means that they can be used in various industries around the world without any concerns about compatibility or quality. Whether you are in North America, South America, Europe, Asia, or Africa, our bars meet the local requirements, ensuring seamless integration into your projects.

• Construction: In the construction industry, these round bars can be used as structural supports, handrails, and reinforcement bars. Their corrosion resistance ensures long - term durability, even in harsh environmental conditions.

• Automotive: For automotive applications, they can be used in engine components, suspension systems, and exhaust systems. The high strength and corrosion resistance of the bars contribute to the overall performance and safety of vehicles.

• Chemical Processing: In chemical plants, the 316 and 2205 grades are particularly useful. They can withstand exposure to various chemicals and corrosive substances, making them suitable for pipes, valves, and reaction vessels.

We are Jiangsu Zhonggongte Metallurgical Technology Co., Ltd., a manufacturer established in 2022. However, our roots in the metal industry go back much further. In 1999, we opened our first metal material sales office in Beijing, China. In 2011, we expanded to Tianjin to focus on stainless steel materials. Since 2012, we have been involved in the research and sales of non - ferrous metals such as nickel - based alloys, Hastelloy alloys, titanium alloys, and cobalt - based alloys.

• Technical Team: Our technical team consists of sales elites who are well - versed in the specialized knowledge of special alloys. They can quickly explain the professional details of the products to customers and are constantly working on product iteration and upgrading.

• Market and Sales: Comprising experienced marketing and sales elites, this team accurately grasps market dynamics and effectively expands our market share across the globe.

• Customer Service: We put customers at the center of our operations. Our customer service team provides 24 - hour uninterrupted high - quality service to ensure continuous improvement in customer satisfaction.

• Product Information and Sample Supply: We offer detailed product information, including specifications, features, and uses. We also provide samples for customers to evaluate and confirm the quality of our products.

• Price and Negotiation: Based on customer needs, we provide quotations that include price, delivery terms, and payment methods. We are open to price negotiation to reach a mutually satisfactory agreement.

• Order Processing: We accept customer orders and ensure their accuracy and correctness. We confirm order details such as quantity, model, and delivery time.

• Production Follow - up and Quality Control: We closely follow up on the production progress to ensure timely delivery. Our strict quality control measures guarantee that the products meet customer requirements and international standards.

• Logistics Arrangement: We arrange transportation and logistics, including shipping, selecting the appropriate transportation mode (sea freight, air freight, etc.), and handling customs clearance procedures. We track the transportation of goods to ensure they reach the customer's designated location smoothly.

• After - Sale Service: We handle customer complaints and issues promptly to ensure customer satisfaction.

With our high - quality hot - rolled black polished duplex stainless steel round bars and comprehensive services, we are confident in meeting the diverse needs of international buyers.