321 Stainless Steel Round Bar Diameter 2mm 3mm 6mm Metal Rods

Round steel is a solid strip of steel with a circular cross section. Its specifications are expressed in millimeters of diameter, such as "50" refers to the diameter of 50 millimeters of round steel. Round steel is divided into hot rolling, forging and cold drawing. Hot rolled round steel is 5.5-250mm in size. Most of the small round steel of 5.5-25mm are supplied in straight bundles, which are commonly used as reinforcing bars, bolts and various mechanical parts. Round steel larger than 25 mm, mainly used in the manufacture of mechanical parts or as seamless steel billet.
Classification by process
Round steel is divided into hot rolling, forging and cold drawing. Hot rolled round steel is 5.5-250mm in size. Among them: 5.5-25mm small round steel is mostly supplied in straight bundles, commonly used as reinforcement, bolts and various mechanical parts; Round steel larger than 25 mm, mainly used for manufacturing mechanical parts, seamless steel tube billet, etc.
Classified by chemical composition
Carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel according to chemical composition (i.e. by carbon content).
(1) low carbon steel
Also known as mild steel, carbon content from 0.10% to 0.30% low carbon steel is easy to accept all kinds of processing such as forging, welding and cutting, often used in the manufacture of chains, rivets, bolts, shafts and so on.
(2) the medium carbon steel
Carbon steel 0.25% to 0.60% carbon. There are killed steel, semi-killed steel, boiling steel and other products. In addition to carbon, it can also contain a small amount of manganese (0.70% ~ 1.20%). According to product quality, it is divided into ordinary carbon structural steel and high quality carbon structural steel. Good hot working and cutting performance, poor welding performance. The strength and hardness are higher than low carbon steel, while the plasticity and toughness are lower than low carbon steel. Without heat treatment, directly use hot rolled material, cold drawn material, can also be used after heat treatment. The quenched and tempered medium carbon steel has good comprehensive mechanical properties. The highest hardness that can be achieved is about HRC55(HB538) and σb is 600 ~ 1100MPa. So in a variety of uses of moderate strength level, medium carbon steel is the most widely used, in addition to as a building material, but also a large number of used in the manufacture of various mechanical parts.
(3) high carbon steel
Often called tool steels, with carbon content from 0.60% to 1.70%, can be hardened and tempered. Hammers, crowbars, etc. are made of 0.75% carbon steel; Cutting tools such as drills, taps, reamers, etc. are made from 0.90% to 1.00% carbon steel.

Jiangsu Irunt Steel Group Co., Ltd. is located in Wuxi City , Jiangsu Province, China, which is the largest steel production base. After 30 years of efforts, it has grown from a family factory to a group company.

The group company mainly produces and sells a series of steel products such as steel pipe, steel coil, steel plate, copper pipe, copper plate, copper strip, aluminum pipe, aluminum plate, galvanized steel pipe, galvanized coil, galvanized plate and so on.The group company has established five platforms, including three production plants and two processing plants. At present, it is still expanding its production line, basically forming a development model of integration of production, processing and sales.

Our annual production capacity of various specifications is about 1 million metric tons. In addition to being a supplier of our series of products, the group company is also committed to expanding its commitment to customers by strengthening services and adding new facilities. A dedicated team is responsible for providing technical support, recommending the correct use of steel, and assisting customers to give full play to their products.

Over the years, we have opened up new markets in Africa, Southeast Asia, the Middle East and America. Our best service and excellent quality have led long-term partners in many countries and established continuous business relations with all customers. Our principle is "service first, sales second". Most of the time, we have comprehensive inspection and procurement to control the quality of finished products. We will have a professional inspection team to test each delivery of products.

Since its establishment, in line with the mission of "contributing high-quality products and services to the world" and the core values of "customer first, excellence, coexistence and win-win", we ensure that we can deeply cooperate with all our friends in the field of iron and steel, and win more affirmation and praise from the market and customers with its high-quality products, perfect product team and thoughtful service, I believe tomorrow will be better!