HRB400 GB Steel Rebar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Supply Capability:: -

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Theoretical weight and section area of each diameter as below for your information:

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m bar(kg)
6	28.27	0.222	2.664
8	50.27	0.395	4.74
10	78.54	0.617	7.404
12	113.1	0.888	10.656
14	153.9	1.21	14.52
16	201.1	1.58	18.96
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76
25	490.9	3.85	46.2
28	615.8	4.83	57.96
32	804.2	6.31	75.72
36	1018	7.99	98.88
40	1257	9.87	118.44
50	1964	15.42	185.04

Usage and Applications of Construction

1. Construction steel round bar is mostly used for straight bundles supply, and used for steel, bolts and various mechanical parts. While the bigger round bar, or more than 25mm hot rolled bar, is mainly for the manufacture of mechanical parts or for seamless steel billet.

2. Steel round bar is used in construction and a large number of architectural and engineering structures.

3. Besides, we can supply some especial material steel round bar that can be used for main shaft of steamer, hummer shank, with big section and supper force.

Packaging & Delivery

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

Q: How are steel billets used in the manufacturing of shipbuilding parts?: Steel billets are used in the manufacturing of shipbuilding parts as they serve as the primary raw material for shaping and forming various components. These billets are heated and then passed through a series of rolling processes to produce different shapes, such as plates, beams, and angles, which are essential for constructing the hull, decks, and structural components of ships. The strength and durability of steel billets make them ideal for withstanding the harsh conditions at sea, ensuring the integrity and longevity of shipbuilding parts.

Q: How do steel billets contribute to the manufacturing of tools and equipment?: Tools and equipment manufacturing relies heavily on steel billets, which serve as a crucial component. These semi-finished steel products play a vital role in shaping and forming the final products used across different industries. To begin with, steel billets function as raw materials during the production of various tools and equipment. They act as the starting point for processes like forging, rolling, and extrusion. These processes involve heating and shaping the steel billets to achieve the desired form and dimensions of the tools and equipment. Furthermore, steel billets possess several advantages that make them suitable for tool and equipment manufacturing. The strength and durability of steel make it an ideal material for tools that need to endure heavy loads and harsh conditions. Additionally, the versatility of steel allows for the production of a wide range of tools and equipment, including cutting tools, machine parts, construction equipment, and automotive components. Moreover, steel billets can be easily machined and formed into complex shapes, enabling the production of intricate tools and equipment that meet specific requirements. The excellent machinability of steel allows for precise cutting, drilling, and milling processes, resulting in accurate dimensions and smooth surfaces. Additionally, steel billets can undergo heat treatment to enhance their mechanical properties, such as hardness and toughness. Processes like quenching and tempering can significantly improve the performance and longevity of tools and equipment. When combined with the inherent strength of steel, these processes ensure that the final products have the necessary strength, hardness, and wear resistance to effectively fulfill their intended functions. In conclusion, steel billets are indispensable in the manufacturing of tools and equipment due to their raw material capabilities and advantageous properties. They provide a reliable and versatile starting point for producing various tools and equipment, enabling the creation of durable, precise, and high-performance products that are vital to numerous industries.

Q: What are the different types of welding processes used for joining steel billets?: There are several different types of welding processes that can be used for joining steel billets. Each method has its own unique characteristics and advantages, depending on the specific requirements of the project. Here are some of the most commonly used welding processes for joining steel billets: 1. Shielded Metal Arc Welding (SMAW): Also known as stick welding, SMAW uses a consumable electrode coated in flux to create an arc between the electrode and the base material. This process is versatile and can be used for both thick and thin steel billets, making it widely used in various industries. 2. Gas Metal Arc Welding (GMAW): Commonly known as MIG welding, GMAW uses a continuous wire electrode and a shielding gas to protect the weld from atmospheric contamination. This process offers high productivity and is suitable for welding steel billets of various thicknesses. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, FCAW uses a continuously fed tubular electrode filled with flux. This process is ideal for welding thicker steel billets and is often used in heavy fabrication applications. 4. Gas Tungsten Arc Welding (GTAW): Also known as TIG welding, GTAW uses a non-consumable tungsten electrode and a separate filler metal. This process produces high-quality welds and is commonly used for joining steel billets in applications that require precision and aesthetic appeal. 5. Submerged Arc Welding (SAW): SAW involves the use of a continuously fed electrode and a granular flux that covers the weld area. The process is particularly suitable for welding thick steel billets and is often used in the construction of pressure vessels and heavy machinery. 6. Laser Beam Welding (LBW): LBW utilizes a laser beam to generate heat and join the steel billets. This process offers high precision and speed, making it suitable for a wide range of applications, including automotive and aerospace industries. 7. Electron Beam Welding (EBW): EBW uses a high-velocity electron beam to melt and join the steel billets. This process provides deep penetration and precise control, making it ideal for critical applications that require high-quality welds. It is important to consider the specific requirements, thickness, and material properties of the steel billets when selecting the appropriate welding process. Consulting with a welding expert can help determine the most suitable method for a given project.

Q: Is there an export duty? Or is there a tax refund?: Your specification 13*13*6 or 12 meters, this is a square cross section, so 7207120000 this can not be used, your billet carbon content is 0.17 to 0.23% less than 0.25%, so we must use the following7207190000 Other Billets with carbon content less than 0.25%Export tax refund: 0%MFN country of import tariff: 2%General customs duties: 11%Export tariff rate: 0%VAT: 17%

Q: How are steel billets used in the manufacturing of agricultural machinery parts?: Steel billets are used in the manufacturing of agricultural machinery parts as they serve as the raw material for forging or casting processes. These billets are heated and shaped into specific forms such as gears, shafts, brackets, or other components required for the machinery. The strength and durability of steel make it an ideal choice for these parts, ensuring the equipment can withstand the demanding conditions of agricultural operations.

Q: What are the different types of steel billet machining processes?: There are several types of steel billet machining processes used in the industry. Some of the most common ones are: 1. Turning: This process involves rotating the steel billet against a cutting tool to remove material and shape it into the desired form. Turning is commonly used to create cylindrical or conical shapes. 2. Milling: In milling, a rotating multi-point cutting tool is used to remove material from the steel billet. This process is versatile and can be used to create various shapes, including flat surfaces, slots, and grooves. 3. Drilling: Drilling is the process of creating holes in the steel billet using a rotating drill bit. It can be done manually or using automated machines, and is often used to create holes for bolts, screws, or other fasteners. 4. Grinding: Grinding involves using an abrasive wheel to remove material from the surface of the steel billet. This process is commonly used to achieve a smooth and precise finish on the billet, or to remove any unwanted surface imperfections. 5. Sawing: Sawing is the process of cutting the steel billet using a saw blade. It can be done using various types of saws, such as band saws, circular saws, or abrasive saws. Sawing is often used to cut the billet into smaller pieces or to remove excess material. 6. Broaching: Broaching is a process that involves using a specialized cutting tool called a broach to remove material from the steel billet. This process is commonly used to create internal or external features, such as keyways or splines. 7. Honing: Honing is a finishing process that involves using abrasive stones to create a smooth and precise surface on the steel billet. It is often used to improve the dimensional accuracy, surface finish, and overall quality of the billet. These are just a few examples of the different types of steel billet machining processes. The choice of process depends on the specific requirements of the project, such as the desired shape, size, and surface finish of the steel billet.

Q: How are steel billets used in the production of railway infrastructure?: Steel billets are an essential component in the production of railway infrastructure. These billets, which are semi-finished steel products, serve as the starting material for the manufacturing of various railway components such as rails, sleepers, and fasteners. To begin with, steel billets are first heated to a high temperature and then passed through a series of rollers to shape them into the desired profile. This process, known as hot rolling, ensures that the billets are transformed into long and narrow sections with a consistent cross-section. These sections serve as the foundation for the construction of railway tracks. One of the primary uses of steel billets in railway infrastructure is the production of rails. After the hot rolling process, the billets are further processed to form rails of various lengths and dimensions. These rails are then used to create the track structure, providing a stable platform for trains to run on. The high strength and durability of steel make it an ideal material for railway tracks, ensuring that they can withstand heavy loads and frequent traffic. Steel billets are also utilized in the production of sleepers, which are the horizontal supports that hold the rails in place. The billets are shaped and formed into concrete or wooden sleepers, which are then laid on the track bed to provide support and stability to the rails. These sleepers play a crucial role in distributing the weight of the trains and maintaining the alignment and gauge of the tracks. Additionally, steel billets are used in the manufacturing of fasteners such as bolts, nuts, and clips. These fasteners are essential for securing the rails to the sleepers and ensuring that they remain in position during train operations. The high strength and resilience of steel make it a reliable material for these critical components, as they need to withstand substantial stress and vibrations. In conclusion, steel billets play a vital role in the production of railway infrastructure. Their versatility and strength make them suitable for creating rails, sleepers, and fasteners, which are essential components of a reliable and robust railway system. Without the use of steel billets, the construction and maintenance of railway tracks would not be possible, ultimately impacting the efficiency and safety of train operations.

Q: What are the different surface treatments applied to alloy steel billets?: There are several different surface treatments that can be applied to alloy steel billets to enhance their properties and improve their performance. One common surface treatment is shot blasting, which involves bombarding the surface of the billets with small metal or ceramic particles at high velocity. This process helps to remove any impurities or contaminants on the surface, creating a clean and uniform surface finish. Shot blasting also promotes adhesion of subsequent coatings or treatments that may be applied to the billets. Another surface treatment is pickling, which involves immersing the billets in an acid solution to remove oxides and scale from the surface. This process helps to improve the surface quality and removes any surface defects, preparing the billets for further processing or treatments. A popular surface treatment for alloy steel billets is heat treatment, which involves subjecting the billets to controlled heating and cooling processes to alter their microstructure and improve their mechanical properties. Heat treatment can be used to increase the hardness, strength, and toughness of the billets, making them more suitable for specific applications. Additionally, alloy steel billets can be coated with various protective coatings to enhance their corrosion resistance and improve their durability. Common coating techniques include hot-dip galvanizing, electroplating, and painting. These coatings provide a barrier between the alloy steel surface and the environment, preventing corrosion and extending the lifespan of the billets. In summary, the different surface treatments applied to alloy steel billets include shot blasting, pickling, heat treatment, and protective coatings. These treatments help to improve the surface quality, enhance mechanical properties, and protect the billets from corrosion, ultimately ensuring optimal performance in various applications.

Q: What are the different types of defects that can occur in steel billets?: There are several types of defects that can occur in steel billets. These defects can occur during the manufacturing process or as a result of external factors. Some of the common types of defects include: 1. Surface defects: These defects occur on the outer surface of the billet and can include scratches, pits, scabs, scale, and cracks. Surface defects can be caused by handling, improper cooling, or contamination during manufacturing. 2. Internal defects: These defects occur within the body of the billet and are not visible on the surface. They can include voids, porosity, inclusions, and segregation. Internal defects can be caused by improper solidification, improper casting, or impurities in the steel. 3. Dimensional defects: These defects occur when the billet does not meet the desired dimensions or tolerances. Dimensional defects can include variations in length, width, thickness, or straightness. These defects can be caused by improper rolling, uneven cooling, or misalignment of the equipment. 4. Mechanical defects: These defects affect the mechanical properties of the steel billet. They can include improper grain structure, low hardness, brittleness, or poor toughness. Mechanical defects can occur due to improper heat treatment, incorrect alloy composition, or inadequate rolling processes. 5. Weld defects: In case of welded billets, defects related to the welding process can occur. These defects can include lack of fusion, incomplete penetration, porosity, or cracks in the weld zone. Weld defects can be caused by improper welding parameters, inadequate preparation, or contamination during the welding process. It is important to detect and address these defects to ensure the quality and integrity of the steel billets. Various inspection techniques such as visual inspection, ultrasonic testing, magnetic particle testing, or radiographic testing can be employed to identify and classify these defects.

Q: How do steel billets contribute to the overall seismic resistance of a structure?: Steel billets play a crucial role in enhancing the overall seismic resistance of a structure. Seismic resistance refers to a structure's ability to withstand the forces and vibrations caused by earthquakes. Firstly, steel billets are commonly used as reinforcement in concrete structures. When placed within the concrete, they provide additional strength and durability to the structure, making it more resistant to seismic forces. The high tensile strength of steel billets allows them to absorb and distribute the seismic energy more effectively, reducing the risk of structural failure during an earthquake. Moreover, steel billets can be used to create specialized structural elements, such as braces or shear walls. These elements are strategically placed within the structure to resist lateral forces caused by earthquakes. By using steel billets, these elements can effectively absorb and dissipate the seismic energy, preventing it from causing significant damage to the overall structure. Furthermore, steel billets can be employed in the construction of seismic dampers. These dampers are devices designed to absorb and dissipate the energy generated by seismic events. By installing steel billet-based dampers, the structure can effectively reduce the amount of seismic energy transferred to the building, thus minimizing potential damage. Additionally, steel billets offer excellent ductility, which is the ability to deform without breaking. During an earthquake, structures undergo significant movements and vibrations. The ductile nature of steel allows it to bend and flex under these forces, absorbing the seismic energy and preventing sudden and catastrophic failure of the structure. In conclusion, steel billets contribute to the overall seismic resistance of a structure by providing additional strength and durability, creating specialized structural elements, allowing the construction of seismic dampers, and offering excellent ductility. Their use enhances the structure's ability to withstand seismic forces, reducing the risk of damage and ensuring the safety of the occupants.

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