Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction

Ref Price:
Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
25000 m.t.
Supply Capability:
200000 m.t./month
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Specification of Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction:

 

Chemical Composition. Q195

Standard

Grade

Element (%)

GB

Q195

C

Mn

S

P

Si

0.06~0.12

0.25~0.50

≤0.050

≤0.045

≤0.30


Chemical Composition. Q235

Standard

Grade

Element (%)

GB

Q235B

C

Mn

S

P

Si

0.12~0.20

0.30~0.70

≤0.045

≤0.045

≤0.30


Technology process of Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction:

1.Heat the EVA film

2.Cover the heated EVA film on the mould(can be made from wood or aluminum)

3.Spray a coating in a certain baume degree

4.Put on the empty blask

5.Sand-up the flask and vibrate to compaction

 

Packaging & Delivery of Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction:

Packaging Details:containers

Delivery Detail:Complete one set of equipment needs for three months

The products can be delivered by bulk vessel or by container. As for container, products with the length of 6m will be loaded in 20’ container, with 9m or 12m, in 40’ container.

-The maximum quantity of loading of container is 25 tons.

-The products usually are transported to the nearest port from the production place.

 

FAQ:

Q1: How soon can we receive the product after purchase?

A1: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q2: What makes stainless steel stainless?

A2: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

Q3: Can stainless steel rust?

A3: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.

 

Images:

 

  • square bar
    square bar

 

Q:
Various methods and techniques are used to inspect the hardness of steel billets. Among these methods, the Rockwell hardness test is commonly employed. This test measures the depth of penetration of an indenter into the steel surface under a specific load to determine the hardness value. It is a quick and reliable way to assess the hardness of steel billets. Another method used for hardness inspection is the Brinell hardness test. This test involves applying a specific load on a hardened steel ball and measuring the diameter of the resulting indentation on the steel surface. The hardness value is calculated based on the applied load and the diameter of the indentation. The Brinell hardness test is useful for large steel billets or when a larger area needs to be tested. Additionally, the Vickers hardness test can be employed to inspect the hardness of steel billets. This method uses a diamond pyramid-shaped indenter to create an impression on the steel surface. The diagonals of the impression are measured, and the hardness value is determined based on the applied load and the surface area of the impression. The Vickers hardness test is commonly used for materials with high hardness or small components. In addition to these traditional hardness testing methods, advanced techniques such as ultrasonic testing and magnetic induction are also available. Ultrasonic testing involves sending high-frequency sound waves through the steel billet and measuring the time it takes for the waves to be reflected back. Any variations in the hardness of the billet can be detected through changes in the ultrasonic waves. On the other hand, magnetic induction utilizes magnetic fields to assess the hardness of steel. By measuring the electrical conductivity and permeability of the steel billet, the hardness can be estimated. Overall, there are several techniques available for inspecting the hardness of steel billets, including Rockwell, Brinell, and Vickers hardness tests, as well as ultrasonic testing and magnetic induction. These methods provide valuable information about the hardness properties of the billets, enabling manufacturers to ensure the quality and suitability of the steel for various applications.
Q:
Steel billets can undergo several heat treatment processes to modify their mechanical properties, including hardness, strength, and toughness, to meet specific requirements for different applications. One prevalent heat treatment process for steel billets is annealing. This involves heating the steel to a specific temperature and maintaining it at that temperature for a set duration, followed by gradual cooling. Annealing helps alleviate internal stresses in the steel, improve its machinability, and enhance its ductility. Another widely used heat treatment process for steel billets is quenching and tempering. Quenching involves rapidly cooling the steel from a high temperature to room temperature using a liquid or gas medium, like water or oil. This process results in hardened steel with increased strength and hardness. However, the steel becomes brittle after quenching, so it is then tempered by reheating it to a lower temperature and holding it at that temperature for a specific time period. Tempering reduces brittleness and improves the toughness and ductility of the steel. Normalizing is another heat treatment process employed for steel billets. It entails heating the steel to a temperature above its critical transformation temperature and then cooling it in still air. Normalizing helps refine the grain structure of the steel, improve its mechanical properties, and enhance its machinability. Lastly, stress relieving is a process used to reduce internal stresses in steel billets that may have been generated during manufacturing processes such as casting or forging. Stress relieving involves heating the steel to a specific temperature and maintaining it at that temperature for a certain duration, followed by gradual cooling. This process aids in improving dimensional stability and reducing the risk of distortion or cracking in the steel. Overall, these common heat treatment processes for steel billets play a vital role in optimizing the properties and performance of steel for various industrial applications, including automotive, construction, aerospace, and energy sectors.
Q:
Steel billets contribute to sustainable construction in several ways: 1. Reduced energy consumption: Steel billets are produced using electric arc furnaces, which require less energy compared to traditional steel manufacturing processes. This results in lower greenhouse gas emissions, contributing to the reduction of carbon footprint. 2. Recyclability: Steel is one of the most recycled materials in the world, and steel billets can be recycled multiple times without losing their mechanical properties. This reduces the need for new steel production, conserves natural resources, and decreases waste disposal. 3. Strength and durability: Steel billets have high strength and durability, making them an ideal choice for constructing sustainable buildings. Their structural integrity ensures long-lasting construction, reducing the need for frequent repairs or replacements. This helps to minimize waste generation and increase the lifespan of buildings. 4. Versatility: Steel billets can be shaped and formed into various structural components, allowing for flexibility in design and construction. This adaptability facilitates the construction of sustainable buildings that can be easily modified or expanded to accommodate changing requirements, reducing the need for new construction. 5. Resistance to natural disasters: Steel billets offer excellent resistance to seismic forces, hurricanes, and other natural disasters. This makes them suitable for constructing buildings in regions prone to such events, contributing to the resilience and safety of the built environment. 6. Reduced construction time: Steel billets enable faster construction due to their prefabricated nature. This reduces the overall construction time, minimizing disruption to the environment and nearby communities. Additionally, prefabricated steel components can be easily dismantled and reused, further enhancing sustainability. In conclusion, steel billets contribute to sustainable construction by reducing energy consumption, being highly recyclable, providing strength and durability, offering design versatility, resisting natural disasters, and reducing construction time. By incorporating steel billets into construction projects, we can create more environmentally-friendly and long-lasting structures, promoting sustainability in the built environment.
Q:
Steel billets have several advantages over other types of metal billets. Firstly, steel is known for its exceptional strength and durability, making steel billets highly resistant to wear and tear. This makes them suitable for a wide range of applications, including construction, automotive, and manufacturing industries. Additionally, steel billets have excellent heat resistance, allowing them to withstand high temperatures without deforming or losing their structural integrity. This makes steel billets ideal for use in the production of components that are exposed to extreme heat, such as engine parts or industrial machinery. Moreover, steel billets offer versatility in terms of shape and size. They can be easily molded and formed into various shapes, enabling manufacturers to create complex and intricate designs. This flexibility makes steel billets preferred in industries where customized or intricate parts are required. Furthermore, steel billets are highly recyclable, making them a sustainable choice. The recycling process of steel requires significantly less energy compared to other metals, resulting in reduced carbon emissions and environmental impact. This aspect has led to an increased preference for steel billets in industries that prioritize sustainability and environmental responsibility. In summary, steel billets outperform other types of metal billets due to their exceptional strength, heat resistance, versatility, and recyclability. These properties make steel billets a preferred choice for numerous industries, offering a combination of durability, functionality, and environmental sustainability.
Q:
Steel billets are typically cut into desired lengths using a process called sawing or shearing. This involves using specialized machinery, such as band saws or circular saws, to cut through the steel billet along the desired length. The saw blades are designed to withstand the hardness of the steel and make precise cuts. This process allows for accurate and efficient production of steel billets in varying lengths as per the requirements of different industries.
Q:
Steel billets, which are essentially long, rectangular bars of raw steel, are cut and shaped into desired forms through a process known as steel billet shaping. This process involves several steps to transform the billets into different shapes and sizes, depending on the desired end product. The first step in shaping steel billets is to cut them into smaller, more manageable lengths. This is typically done using a sawing process, where the billets are cut using high-speed rotating blades. The saw blades can be either circular or bandsaw blades, depending on the specific requirements of the cut. Once the billets are cut into smaller lengths, they are then heated to a specific temperature in a furnace. This heating process is known as preheating and is essential for making the steel more malleable and easier to shape. The temperature and duration of preheating depend on the type of steel and the desired final shape. After preheating, the billets are transferred to a shaping machine, such as a rolling mill or a forging press. These machines exert high pressure on the heated billets to deform them into the desired shape. Rolling mills use a series of rollers to gradually shape the billets into various forms, such as bars, rods, or sheets. On the other hand, forging presses use immense force to reshape the billets by compressing them between dies or molds. During the shaping process, the billets may also undergo additional heat treatments, such as quenching or tempering, to enhance their mechanical properties. Quenching involves rapidly cooling the shaped billets to increase their hardness, while tempering involves reheating and slowly cooling them to improve their toughness and durability. Finally, once the steel billets have been shaped into the desired forms, they may undergo further processing steps, such as machining, grinding, or surface finishing, to achieve the required dimensional accuracy and surface quality. These additional processes ensure that the steel products meet the specified tolerances and surface requirements. In conclusion, steel billets are cut and shaped into desired forms by a combination of cutting, heating, shaping, and additional processing steps. This allows the raw steel material to be transformed into various products, ranging from bars and rods to sheets and other complex shapes, catering to the diverse needs of different industries.
Q:
There are several quality standards for steel billets, including ASTM (American Society for Testing and Materials), ISO (International Organization for Standardization), and EN (European Norm) standards. These standards define various parameters such as chemical composition, mechanical properties, and dimensional tolerances that steel billets must meet in order to ensure their quality and suitability for different applications.
Q:
The specifications for alloy steel billets used in the defense industry vary depending on the specific application and requirements of each project. However, there are certain common specifications that are typically followed. Firstly, the alloy steel billets used in the defense industry must meet stringent material standards and be certified to specific military or industry specifications. These standards often include requirements for the chemical composition, mechanical properties, and heat treatment of the alloy steel. The chemical composition of the alloy steel billets is crucial, as it determines the material's strength, hardness, and resistance to corrosion and high temperatures. The specific composition may vary depending on the intended use, but common alloying elements include chromium, molybdenum, vanadium, and nickel. Additionally, the carbon content is carefully controlled to achieve the desired strength and toughness. In terms of mechanical properties, alloy steel billets for defense applications generally need to have high strength, toughness, and impact resistance. They should be able to withstand extreme conditions, including high pressure, shock, and vibrations. The billets may undergo specific heat treatments, such as quenching and tempering, to achieve the desired mechanical properties. The dimensional specifications for alloy steel billets used in the defense industry are also crucial. They must meet precise size and shape tolerances, as well as surface finish requirements, to ensure compatibility with the manufacturing processes and final products. Furthermore, the billets may need to be certified to specific industry or military standards, such as MIL-STD or ASTM specifications, to ensure their suitability and reliability for defense applications. These standards define the testing methods, quality control requirements, and performance criteria that the alloy steel billets must meet. Overall, the specifications for alloy steel billets used in the defense industry encompass a range of factors, including chemical composition, mechanical properties, dimensional tolerances, and adherence to industry or military standards. These specifications are essential to ensure the performance, durability, and safety of the final defense products.
Q:
Yes, steel billets can be extruded into different shapes.
Q:
Steel billets, which serve as raw materials for the production of various steel products, must comply with several international standards. Notable examples of these standards include: 1. ASTM A615/A615M: This standard specifies the characteristics of deformed carbon-steel bars used for reinforcing concrete. It also covers the requirements for billets utilized in the manufacturing process of these bars. 2. EN 10025: Of European origin, this standard outlines the technical delivery conditions for structural steel products. It encompasses a wide range of steel grades, including billets, which find application in construction and engineering. 3. JIS G3112: Hailing from Japan, this Industrial Standard defines the specifications for steel bars, including billets, used in concrete reinforcement. It guarantees the quality and performance of steel billets within the construction industry. 4. GB/T 699: A Chinese standard, this document establishes the technical requirements for high-quality carbon structural steel, including billets. It encompasses aspects such as chemical composition, mechanical properties, and heat treatment. 5. IS 2830: This Indian Standard outlines the specifications for carbon steel billets used in general engineering purposes. It encompasses requirements related to chemical composition, mechanical properties, and dimensional tolerances. By adhering to these international standards, industries across the globe can ensure the consistency, quality, and safety of steel billets. The adherence to such standards facilitates the uniformity and encourages global trade of steel products.

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