Q345D bright bar is a high-quality low-alloy high-strength steel. The appearance is uniform and bright without defects. In terms of performance, Q345D bright bar has high strength and can withstand large loads. At the same time, it can still maintain good toughness in low temperature environment, and is not prone to brittle fracture. It is suitable for engineering construction or low-temperature working conditions in cold areas. The material also has good welding performance, and it is not easy to produce defects such as cracks during welding. The welded joint has high strength and good toughness; it has good cutting performance, forging performance, etc., and can be easily processed into parts of various shapes and sizes to meet different usage requirements.

Chemical element content (%)

Specification：1.00~300.00mm

Application: Mainly used to manufacture transmission shafts, gears, sprockets, bearing seats, structural parts, etc.; widely used in machinery manufacturing, construction engineering, bridge engineering, energy and other fields.

Compared with other brands of Q345D bright bars, what are the advantages of Sividen's Q345D bright bars?

1. High quality stability: Advanced and strict production process and quality control system, strict control from raw material screening to production in all links, very precise control of chemical composition, can accurately control the content of various elements such as carbon, silicon, manganese, etc., to meet the standard requirements, to ensure the mechanical properties and quality stability of Q345D bright bar. The performance and quality fluctuations of Sividen bright bar are very small, which can meet customers' high requirements for product consistency and provide reliable guarantee for subsequent processing and use.

2. Excellent surface quality: The use of advanced production equipment and processing technology makes the surface smoothness, flatness and finish of Q345D bright bar very high. Smooth surface can not only reduce friction in subsequent processing and improve processing efficiency, but also reduce stress concentration caused by surface defects and extend the service life of the product. The surface treatment process is optimized during the production process, so that the surface of the bright bar has better corrosion resistance. In some environments with high requirements for corrosion resistance, Q345D bright bar can maintain good performance and is not easy to rust and corrode.

3. High dimensional accuracy: Advanced production equipment and precision testing instruments can accurately control the size of Q345D bright bar, making its dimensional tolerance range smaller, which can meet customers' requirements for high-precision dimensions. Not only is the dimensional accuracy of a single product high, but the dimensional difference between bright bars in the same batch is also very small, with good dimensional uniformity. For some products that require batch processing, this can ensure the dimensional consistency of each part, improve production efficiency and product quality.

4. Rich product variety: According to market demand and customer's special requirements, customized Q345D bright bar products are provided to meet the use requirements under various complex working conditions, providing customers with more choices.

5. Perfect after-sales service: The perfect after-sales service system can respond to customer needs and feedback in a timely manner. For problems encountered by customers during use, technical support and solutions are provided to customers quickly.

We mainly engage in cold heading wire, bar, peeled bar, and profiled bar; our products cover 11 series and more than 300 grades, and we continue to develop a variety of professional steels. We can provide all-round solutions such as cold heading finishing line manufacturing and high-precision bright bar customization, and provide one-stop procurement services and package procurement solutions for global customers. The website displays some grades. If you don’t have the grade you need, please contact us by phone or email.