Mild steel billet for hot rolled steel products

Mild steel billet for hot rolled steel products

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 1000 m.t.

Supply Capability:: 15950 m.t./month

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Specification

Grade:

Q195/Q215/Q235/Q275

Payment terms:

100%Irrevercable L/C at sight or T/T

Length:

6~12meters

Size:

100mm to 165mm

Billets, or ingots (as they sometimes referred to), are not of practical use until they have been formed

into more functional shapes and sizes. While they have already been put in the furnace, they still require

a series of shaping and molding procedures such as hot and cold working, milling and cutting before they

are sold in hardware stores, or used for different applications. The unformed billets, however, can be used

in striking currency such as coins and as reserves, similar to gold bars.

Rectangular billet continuous casting billet and mainly general carbon steel, low carbon low silicon cold-rolled material, high quality carbon structural steel, high strength low alloy steel, special steel, etc.

The billet is mainly divided into two kinds from the shape:

Slab: cross section width and height of the ratio of the larger, mainly used for rolling plate.

Gade:

Standard	C(%)	Mn(%)	S(%)	P(%)	Si(%)
Q195	≤0.12	≤0.50	≤0.040	≤0.035	≤0.30
Q235	≤0.20	≤1.40	≤0.045	≤0.045	≤0.35
Q275	≤0.22	≤1.50	≤0.045	≤0.045	≤0.35
20MnSi	0.17-0.25	1.2-1.6	≤ 0.050	≤ 0.050	0.40-0.80
3SP	0.14-0.22	0.40-0.85	≤ 0.050	≤ 0.040	0.05-0.15
5SP	0.28-0.37	0.50-1.00	≤ 0.050	≤ 0.040	0.15-0.30

Mild steel billet for hot rolled steel products

Our service :

We have a plant and professional team to provide our best service, from the start of production until the

loading into the vessel, we have a complete quality follow up procedure, to assure our products arrives to the customer with satisfaction. Welcome new and old customers

to contact us for future business relationships! We will give you a surpise price.

Packing :

Within 30 days

1.Standard export package
2.In bundles with steel strips
3.As the requirements of the customers

FAQ:

Q: What is payment terms?
A: FOB 30% T/T IN ADVANCE AS DEPOSIT AND 70% T/T BEFORE SHIPMENT
CIF and CFR 30% T/T IN ADVANCE AS DEPOSIT AND 70% T/T AS THE COPY OF B/L OR L/C AT SIGHT

Q:How to guarantee the quality of the products?

A:We have established the international advanced quality management system,every link from raw material

to final product we have strict quality test;We resolutely put an end to unqualified products flowing into the market.

At the same time, we will provide necessary follow-up service assurance.

Q:How long can we receive the product after purchase?

A :In the purchase of product within three working days, We will arrange the factory delivery as soon as possible.

The pecific time of receiving is related to the state and position of customers.

Q: Difference between medium frequency continuous casting billet and electric furnace continuous casting billet: In general, the difference between medium frequency furnace steelmaking and electric arc furnace steelmaking:1, intermediate frequency furnace slag can not, so the harmful elements such as P, S and other elements can not be removed, and the electric arc furnace can;2, if not blowing furnace carbon reduction, so C elements cannot be adjusted downward, and the arc furnace can only increase;

Q: How is the surface condition of steel billets checked?: The surface condition of steel billets is typically checked through visual inspection and various non-destructive testing methods. Visual inspection involves thoroughly examining the surface of the billets for any visible defects such as cracks, pits, dents, or scratches. This is usually done by trained inspectors who have a keen eye for detecting surface imperfections. In addition to visual inspection, various non-destructive testing techniques are employed to assess the surface condition of steel billets. These techniques include magnetic particle testing, liquid penetrant testing, ultrasonic testing, and eddy current testing. Magnetic particle testing involves applying a magnetic field to the billet's surface and then applying fine iron particles. If there are any surface defects, such as cracks or inclusions, the magnetic particles will be attracted to these areas and form visible indications. Liquid penetrant testing involves applying a liquid dye to the surface of the billet. The dye penetrates any surface defects, and after a certain period of time, excess dye is removed, and a developer is applied. The developer draws out the dye from any surface defects, making them visible and easy to detect. Ultrasonic testing utilizes high-frequency sound waves to detect surface and subsurface defects. A transducer is used to generate sound waves that penetrate the billet's surface. If there are any defects, such as cracks or voids, the sound waves will reflect back, and by analyzing the reflected waves, any surface or subsurface flaws can be identified. Eddy current testing involves passing an alternating current through a coil placed near the billet's surface. Any surface defects or variations in the material's conductivity will cause changes in the current flow, which can be detected and analyzed to determine the surface condition. These non-destructive testing methods provide accurate and reliable information about the surface condition of steel billets, helping to ensure their quality and integrity before further processing or usage.

Q: How are steel billets used in the production of marine parts?: Steel billets are an integral component in the production of marine parts. These billets, which are essentially semi-finished steel products, are used as the raw material for shaping and forming various marine components. To begin with, steel billets undergo a process called hot rolling, where they are heated to high temperatures and passed through rolling mills to produce different shapes and sizes. This hot rolling process helps in refining the steel's grain structure, enhancing its mechanical properties and making it suitable for marine applications. Once the desired shape and size are achieved, these billets are further processed through various techniques such as forging, machining, and welding to create specific marine parts. For instance, steel billets are used to manufacture propeller shafts, rudder stocks, and various structural components like hull frames and bulkheads. The high strength and durability of steel make it an excellent choice for marine parts, as it can withstand the harsh conditions of saltwater, extreme temperatures, and heavy loads. Additionally, steel billets can be easily customized to meet specific design requirements, ensuring the production of precise and reliable marine parts. Furthermore, steel billets also play a crucial role in the repair and maintenance of marine vessels. In cases where existing components need to be replaced, steel billets can be shaped and machined to match the exact specifications of the original parts. This ensures compatibility and seamless integration, allowing for efficient repairs and ensuring the continued operation of marine vessels. In conclusion, steel billets are essential in the production of marine parts as they provide the raw material necessary for shaping and forming various components. Their high strength, durability, and customization capabilities make steel billets an ideal choice for marine applications, ensuring the reliability and performance of marine vessels.

Q: What are the different methods of steel billet surface coating?: Various industries commonly utilize several methods for steel billet surface coating in order to enhance durability, corrosion resistance, and appearance. Some of these methods include: 1. Hot-dip galvanizing: Steel billets are immersed in molten zinc, creating a protective layer that offers exceptional corrosion resistance. This method finds wide application in construction, automotive, and infrastructure industries. 2. Electroplating: A thin layer of metal, such as chromium or nickel, is deposited onto the steel billets using an electric current. This process not only improves the steel's appearance but also provides a protective coating against corrosion. 3. Powder coating: Dry powder is electrostatically sprayed onto the steel billets' surface and then cured with heat, resulting in a hard, durable, and visually appealing coating. Powder coating offers excellent resistance to impact, corrosion, and chemicals. 4. Painting: Steel billets can be coated with paint through spraying, dipping, or brushing techniques. Paint coatings enhance the appearance of the steel while also providing protection against corrosion and weathering. 5. Thermal spray coating: Molten or semi-molten materials, including metals, ceramics, or polymers, are projected onto the steel billets' surface. Upon solidification, these materials form a protective coating. Thermal spray coatings offer excellent corrosion resistance, wear resistance, and thermal insulation. 6. Anodizing: Although commonly used for aluminum, anodizing can also be applied to steel billets. This process involves immersing the billets in an electrolyte solution and subjecting them to an electric current, resulting in a controlled oxidation reaction that forms a protective oxide layer. Anodizing improves corrosion resistance and appearance. Each method has its own advantages and suitability for specific applications. The choice of coating method depends on factors such as the intended use of the steel billets, environmental conditions, and desired coating properties.

Q: How are steel billets cut and shaped into desired forms?: Steel billets are cut and shaped into desired forms through a process called hot rolling. The billets are heated and then passed through a series of rollers, which apply pressure and shape the steel into various profiles such as bars, rods, or sheets. This process allows for precise control over the dimensions and specifications of the final product.

Q: What is the role of steel billets in the manufacturing of structural steel buildings?: Steel billets are the raw materials used in the manufacturing of structural steel buildings. They undergo various processes such as heating, rolling, and shaping to form different structural components like beams, columns, and trusses. These billets provide the necessary strength, durability, and flexibility required for constructing sturdy and reliable steel structures.

Q: What are the different surface treatments for improved corrosion resistance in steel billets?: There are several different surface treatments that can be applied to steel billets in order to improve their corrosion resistance. These treatments are designed to create a protective barrier on the surface of the steel, preventing the corrosive agents from reaching the underlying metal. Some common surface treatments for improved corrosion resistance in steel billets include: 1. Hot-dip galvanizing: This process involves immersing the steel billets in a bath of molten zinc. The zinc reacts with the steel to form a protective layer of zinc-iron alloy, known as a galvanized coating. This coating provides excellent corrosion resistance and can extend the lifespan of the steel billets. 2. Electroplating: Electroplating is a process in which a thin layer of metal, such as zinc or nickel, is deposited onto the surface of the steel billets using an electric current. This creates a protective barrier that prevents corrosion and provides a decorative finish. 3. Powder coating: Powder coating involves applying a dry powder to the surface of the steel billets and then heating it to form a protective layer. The powder is typically made of a mixture of resin and pigment, which melts and bonds to the steel when heated. Powder coating provides excellent corrosion resistance and is available in a wide range of colors and finishes. 4. Paint coatings: Painting steel billets with corrosion-resistant paint is another effective surface treatment. The paint forms a protective barrier that prevents moisture and corrosive agents from reaching the steel. Multiple layers of paint may be applied to improve the durability and longevity of the coating. 5. Passivation: Passivation is a chemical process that removes free iron and other contaminants from the surface of the steel billets. This helps to prevent the formation of corrosion and promotes the formation of a protective oxide layer. Passivation is often used in combination with other surface treatments, such as electroplating or powder coating, to enhance their corrosion resistance. It is worth noting that the choice of surface treatment for improved corrosion resistance in steel billets depends on various factors such as the environment in which the billets will be used, the desired lifespan of the steel, and the cost considerations. Therefore, it is essential to carefully evaluate the specific requirements and consult with experts to determine the most suitable surface treatment.

Q: What are the physical properties of steel billets?: Steel billets have several physical properties including high strength, excellent toughness, good ductility, and high resistance to corrosion. They are typically solid, dense, and have a metallic luster. Steel billets are also known for their high melting point and conductivity, making them suitable for various industrial applications such as construction, automotive, and manufacturing.

Q: How are steel billets made?: Steel billets are made through a process called continuous casting, where liquid steel is poured into a water-cooled mold to form a solid rectangular shape. The mold is then gradually withdrawn, allowing the steel to solidify and form a billet.

Q: How are steel billets used in the manufacturing of pumps and compressors?: Steel billets are used in the manufacturing of pumps and compressors as raw material for forging or machining various components such as impellers, casings, and shafts. These billets are shaped and processed into specific parts, ensuring the strength, durability, and performance required for these industrial equipment.

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