Steel Billet from China Alibaba Q215 Q235 Q275

Steel Billet from China Alibaba Q215 Q235 Q275

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1000 m.t.

Supply Capability:: 17684 m.t./month

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Specification

Size:

100mm to 165mm

Length:

6~12meters

Grade:

Q195/Q215/Q235/Q275

Price term:

FOB/CIF/ CFR according to clients requirements

Payment terms:

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

Steel billets have distinct characteristics as compared with already furnished steel bars and products. Billets

have a specific grain structure, which enables the metal to be processed more intricately. Steel billets are also

known for their malleability and ductility, especially when exposed to varying temperatures during shaping and

molding.

Used for the plant, the bridge,shipment building high-rise building construction,lifting and transportation machinery, equipment manufracturing base building the support

foundation pile manufacturing.

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

Steel Billet from China Alibaba Q215 Q235 Q275

Other Specifications

Squar Tolerance: ±4

Length Tolerance: +100mm

Romboidity/Difference Diagonals: no more than 0.7%

Camber: no more than 1.5%(%)

Twist: no more than 3 degrees per 1 meter length

Our Advantage

* Professional Personnel of Steel Trading

* Strong Steel Industry Background

* Conveniently Geographic Location

Our Commitment

* Sincere, Practical, Efficient and Developing

* High Quality Steel Production

* Competitive Price and Timely Delivery

Packing :

Within 30 days

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

FAQ:

Q: How to get quotation?
A: When we receive your detailed enquiry, we will set the best price based on standard,
steel grade, outer diameter, wall thickness, quantity, country.
And we will send quotation to your mailbox.

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: How are steel billets reheated before rolling or forging?: Steel billets are reheated before rolling or forging through a process known as billet heating. This process involves subjecting the billets to high temperatures to make them more malleable and easier to shape. There are several methods commonly used for billet heating, including: 1. Furnaces: The most common method of reheating steel billets is through the use of furnaces. These furnaces are typically gas-fired and can reach temperatures of up to 1,200 degrees Celsius. The billets are loaded into the furnace and heated for a specific period of time to achieve the desired temperature. The furnace provides a controlled environment, allowing for even heating and uniformity. 2. Induction heating: Another method used for reheating steel billets is induction heating. This process utilizes electromagnetic induction to heat the billets. An alternating current is passed through a copper coil, creating a magnetic field. The billets are then placed inside the coil, and the magnetic field induces eddy currents within the billets, generating heat. Induction heating offers precise temperature control and rapid heating rates, making it suitable for high-speed production. 3. Electric resistance heating: Electric resistance heating is another technique employed for reheating steel billets. This method involves passing an electric current through the billets, causing them to heat up due to the resistance encountered. Electric resistance heating can be achieved using various types of heating elements, such as graphite electrodes or resistance heating wires. This method offers precise temperature control and is commonly used for smaller-scale operations. Regardless of the heating method used, it is essential to carefully control the temperature and heating time to ensure the billets reach the optimal temperature for rolling or forging. The reheating process allows the steel to become more pliable, reducing its hardness and increasing its ductility, making it easier to shape and form into the desired end product.

Q: What are the main factors that influence the strength of steel billets?: The strength of steel billets is impacted by various factors, including the chemical composition, heat treatment, and microstructure of the steel. The chemical composition plays a significant role in determining the strength of steel billets. Alloying elements like carbon, manganese, silicon, and chromium can enhance strength by forming solid solutions or precipitates that increase hardness and tensile strength. It is crucial to control impurity levels and maintain the desired balance of alloying elements to achieve the desired strength properties. Heat treatment is another important factor that affects the strength of steel billets. This process involves heating the steel to a specific temperature and then cooling it at a controlled rate. It significantly impacts the microstructure of the steel, which ultimately influences its strength. For example, quenching and tempering can result in the formation of desired microstructures like martensite or bainite, which enhance strength and toughness. The microstructure of steel billets also plays a crucial role in determining their strength. The arrangement of crystal grains and the presence of different phases within the steel greatly influence its mechanical properties. Fine-grained structures generally exhibit higher strength due to a greater number of grain boundaries, which inhibit dislocation movement and enhance strength. Additionally, the presence of specific microstructural features like precipitates or second-phase particles can contribute to the strength of steel billets. Other factors such as the manufacturing process, cooling rate during solidification, and mechanical working (such as rolling or extrusion) can also affect the strength of steel billets. These factors impact grain size, grain boundary density, and defect concentration, all of which influence the mechanical properties of the steel. In conclusion, the strength of steel billets is influenced by the chemical composition, heat treatment, and microstructure of the steel. These factors can be carefully controlled and optimized to achieve the desired strength properties for various applications.

Q: What are the main differences between hot-rolled and cold-rolled steel billets?: The main differences between hot-rolled and cold-rolled steel billets lie in the manufacturing process and the resulting characteristics of the steel. Hot-rolled steel billets are produced at high temperatures, resulting in a rougher surface and less precise dimensions. They are more malleable and ductile, making them suitable for applications that require shaping or bending. On the other hand, cold-rolled steel billets are manufactured at room temperature, resulting in a smoother and more precise surface finish with tighter dimensional tolerances. Cold-rolled steel billets are stronger and exhibit better surface hardness, making them ideal for applications that require strength, precision, and a superior surface finish.

Q: What are the quality standards for steel billets?: The quality standards for steel billets are a set of criteria and specifications that ensure the desired characteristics and properties of the billets are met. These standards are essential to guarantee the reliability, durability, and safety of the steel billets during their manufacturing and subsequent use in various industrial applications. One of the primary quality standards for steel billets is the chemical composition. It specifies the required levels of different elements present in the billets, such as carbon, manganese, silicon, sulfur, and phosphorus. The chemical composition directly affects the strength, hardness, and machinability of the steel billets. Another crucial quality standard is the physical properties of the billets. These include dimensions, surface finish, and straightness. The dimensions must meet the specified tolerances to ensure compatibility with downstream processes like forging, rolling, or extrusion. The surface finish should be free from defects and imperfections that could compromise the integrity of the billets. The straightness is important for proper alignment and handling during production and subsequent fabrication. Mechanical properties are also critical quality standards for steel billets. These properties include tensile strength, yield strength, elongation, and impact resistance. The billets must possess adequate strength and toughness to withstand the forces and stresses they will be subjected to during subsequent manufacturing processes and in the final application. Furthermore, defects and imperfections in steel billets need to be minimized or eliminated to meet quality standards. Common defects include cracks, inclusions, segregation, and porosity. These defects can compromise the structural integrity and performance of the billets, so they must be controlled within specified limits. To ensure compliance with quality standards, steel billets are subjected to various testing and inspection methods. These can include chemical analysis, mechanical testing, ultrasonic testing, magnetic particle inspection, and visual examination. These tests help identify any deviations from the desired quality standards and enable corrective actions to be taken. Overall, the quality standards for steel billets encompass chemical composition, physical properties, mechanical properties, absence of defects, and compliance with testing and inspection requirements. By adhering to these standards, manufacturers can ensure that the produced steel billets meet the required specifications and will perform reliably in their intended applications.

Q: How do steel billets come out?: Three, steel rolling:Rolling steel or continuous casting billet into various steels by rolling mill

Q: What are the different types of machining processes used for shaping steel billets?: There are several different types of machining processes that can be used to shape steel billets. Here are some of the most common ones: 1. Turning: This process involves rotating the billet against a cutting tool, which removes material from the outer surface. It is often used to create cylindrical shapes or to remove excess material from the billet. 2. Milling: In milling, a rotating cutting tool is used to remove material from the surface of the billet. This process can be used to create flat surfaces, slots, or complex shapes. 3. Drilling: Drilling is the process of creating holes in the billet using a rotating cutting tool. It can be done manually or with the help of a drilling machine. 4. Grinding: Grinding is a process that uses an abrasive wheel or belt to remove material from the surface of the billet. It is often used to achieve a smooth and precise finish. 5. Broaching: Broaching involves using a broach, which is a toothed cutting tool, to remove material from the billet. This process is often used to create internal or external splines, keyways, or other special shapes. 6. Sawing: Sawing is a cutting process that uses a saw blade to separate the billet into smaller pieces or to remove excess material. It can be done manually or with the help of a sawing machine. These are just a few examples of the machining processes used for shaping steel billets. Each process has its own advantages and is chosen based on the specific requirements of the final product.

Q: What is the maximum length of a steel billet?: The maximum length of a steel billet can vary depending on various factors such as the manufacturing process, equipment capabilities, and specific industry requirements. In general, steel billets can range in length from a few inches to several meters. However, it is important to note that longer billets are often more challenging to produce and handle due to their increased weight and potential for deformation. Therefore, the maximum length of a steel billet is typically determined by practical considerations and operational limitations within the steel industry.

Q: What does the billet of the steel plant refer to?And steel what is the difference?: Many species, usually by chemical composition, production process, rolling shape, supply form, diameter, and use in the structure the classification of steel bars for concrete reinforcement refers to straight or strip steel plate reinforced concrete reinforcement steel, its shape is divided into round steel bar and deformed steel two. Steel bars in concrete under tensile stress.

Q: How are steel billets used in the manufacturing of machinery and equipment?: Steel billets are used in the manufacturing of machinery and equipment as they serve as the primary raw material for creating various components such as gears, shafts, and structural frames. These billets are heated and subjected to a series of shaping processes, such as rolling, forging, and machining, to form the desired shape and size of the machinery parts. The strength, durability, and versatility of steel make it an ideal choice for producing robust and reliable machinery and equipment.

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