Prime quality square alloy steel billet 155mm Q235
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 m.t./month
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Structure of Prime quality square alloy steel billet 155mm Q235
Description of Prime quality square alloy steel billet 155mm Q235
1. Prepainted steel coil is coated with organic layer, which provides higher anti-corrosion property and a longer lifespan than that of galvanized or galvalume steel sheets.
2. The base metals for prepainted steel coil consist of cold rolled, HDGI Steel, electro-galvanized and hot-dip alu-zinc coated steel. The finish coats of prepainted steel coil can be classified into groups as follows: polyester, silicon modified polyesters, polyvinylidene fluoride, high-durability polyester, etc.
3. The production process has evolved from one-coating-and-one-baking to double-coating-and-double-baking, and even three-coating-and-three-baking.
4. The color of the prepainted steel coil has a very wide selection, like orange, cream-colored, dark sky blue, sea blue, bright red, brick red, ivory white, porcelain blue, etc.
5. The prepainted steel coils can also be classified into groups by their surface textures, namely regular prepainted sheets, embossed sheets and printed sheets.
Main Feature of Prime quality square alloy steel billet 155mm Q235
Uncoated CR steel sheet
With the features of in line with the international highest standards in demension and shape, excellent surface finish and properties, the products are mainly used in home appliance and automobile industries.
Galvanized steel sheet(include HDG and EG)
With the features of good corrosion resistance, the products are mainly used in automobile, home appliance, electronics, building and machinery manufacture industries, etc.
Precoated steel sheet
With the features of enviromental protection and good processablility, long lasting surface durability, rich in colors, the products are maily used in building, home appliance and furniture industries, etc.
Applications of Prime quality square alloy steel billet 155mm Q235
Construction
Manufacture anticorrosion, industrial and civil architecture roof boarding, roof grille
Light industries
Home appliance's case, civil chimney, kitchen utensils
Auto industry
Corrosion resistant parts of cars
Agriculture
Food storage, meat and aquatic products' freezing and processing equipment
Commerce
Equipments to store and transport materials, and packing implements
Specifications of Prime quality square alloy steel billet 155mm Q235
Product | Prime quality square alloy steel billet 155mm Q235 |
Material Grade | SGCC / SGCH / DX51D+AZ, etc |
Thickness | 0.6-3.0mm |
Width | 500-1500mm |
Tolerance | Thickness: +/-0.02mm , Width:+/-2mm |
Zinc-coating | Z30-150g/m2 |
Technique | Raw material: Hot rolled steel coil --> Cold rolled_>hot dipped galvalume |
Surface | Dried, Chromated, Unoiled |
Spangle | Regular spangle , small spangle, zero spangle |
ID | 508MM 610MM |
Coil weight | 1-25MT |
Export package | Cardboard inner sleeves, Waterproof paper, galvanized steel covered and steel strip packed |
FAQ of Prime quality square alloy steel billet 155mm Q235
We have organized several common questions for our clients，may help you sincerely：
1. How Can I Visit There?
Our company is located in Tianjin City, China, near Beijing. You can fly to Tianjin Airport Directly. All our clients, from home or aboard, are warmly welcome to visit us!
2. How Can I Get Some Sample?
We are honored to offer you sample.
3. Why choose CNBM?
Our delivery time about 15-20days for standard sizes, if you have other requirements like hardness, quanity and width ,it is about 20-40days. But don't worry we also try our best for the delivery time ,because time longer and our cost is higher.
- Q:Are there any international standards for steel billets?
- Indeed, steel billets are subject to international standards. The International Organization for Standardization (ISO) has formulated multiple standards that outline the prerequisites and specifications for steel billets. ISO 683-2 stands out as the most widely utilized ISO standard for steel billets, as it delineates the technical delivery requirements for hot-rolled steel bars, sections, and billets intended for general engineering applications. Moreover, the American Society for Testing and Materials (ASTM) has also established its own set of standards for steel billets, exemplified by ASTM A615/A615M. This particular standard specifies the criteria for deformed and plain carbon-steel bars designed for concrete reinforcement. These global standards ensure that steel billets, produced and traded worldwide, fulfill the essential quality and performance criteria, thereby fostering uniformity and compatibility within the industry.
- Q:What are the different types of steel billet cutting tools?
- There are several different types of steel billet cutting tools available, each designed for specific purposes and applications. Some of the most common types include: 1. Bandsaw: This type of cutting tool uses a continuous loop of toothed blade to cut through steel billets. Bandsaws are versatile and can be used for both straight and curved cuts. 2. Circular saw: Circular saws feature a toothed blade that rotates in a circular motion to cut through steel billets. They are known for their speed and efficiency, making them a popular choice for large-scale cutting operations. 3. Abrasive cut-off saw: These tools use a high-speed rotating abrasive disc to cut through steel billets. Abrasive cut-off saws are ideal for cutting through thick and hard materials quickly. 4. Plasma cutter: Plasma cutters use a high-velocity jet of ionized gas to melt and cut through steel billets. They are known for their precision and ability to cut through thick materials with ease. 5. Waterjet cutter: Waterjet cutters use a high-pressure jet of water mixed with abrasive particles to cut through steel billets. This type of cutting tool is highly accurate and does not generate heat, making it suitable for cutting heat-sensitive materials. 6. Laser cutter: Laser cutters use a high-powered laser beam to melt and vaporize steel, creating a precise and clean cut. Laser cutting is known for its high level of accuracy and versatility. These are just a few examples of the different types of steel billet cutting tools available. The choice of tool depends on factors such as the type and thickness of the material being cut, the desired level of precision, and the specific application requirements.
- Q:What are the different methods of steel billet surface treatment?
- The industry commonly utilizes several methods for steel billet surface treatment, aiming to enhance properties such as corrosion resistance, hardness, and aesthetics. Some of the most widely used methods include: 1. Pickling and Passivation: By utilizing acid solutions, impurities and oxide layers are removed from the steel surface. Passivation follows pickling to create a protective layer against future corrosion. 2. Shot Blasting: This mechanical treatment involves bombarding the billet surface with high-speed steel shots or grits, effectively eliminating scale, rust, and contaminants to achieve a clean and uniform surface. 3. Hot-Dip Galvanizing: Steel billets are immersed in molten zinc, which forms a protective coating on the surface. This method provides exceptional corrosion protection, making it suitable for outdoor applications. 4. Electroplating: A thin layer of metal, such as chrome or nickel, is deposited onto the steel surface using an electric current. This process enhances appearance, corrosion resistance, and wear resistance. 5. Powder Coating: A dry powder is applied to the steel surface and then cured through heat, resulting in a durable and visually appealing finish. This method is popular for aesthetic purposes. 6. Painting: The steel surface is cleaned, primed, and applied with a suitable paint system. This method enhances appearance and provides protection against corrosion and environmental factors. 7. Nitriding: Nitrogen diffuses into the steel surface through a heat treatment process. This method improves billet hardness, wear resistance, and fatigue strength. These are just a few of the available methods for steel billet surface treatment. The choice of method depends on specific application requirements, desired properties, and budget considerations.
- Q:How are steel billets recycled or reused?
- Various methods can be employed to recycle or reuse steel billets, which are semi-finished metal products. One commonly used method is electric arc furnace (EAF) steelmaking, where the billets are melted down in an electric arc furnace and utilized in the production of new steel products. This process effectively utilizes resources and aids in the reduction of greenhouse gas emissions and energy consumption compared to primary steel production. Steel billets can also be repurposed in industries like construction, automotive, and manufacturing. They can be transformed and reconfigured to create novel steel products or utilized as raw material for forging, rolling, or extrusion processes. By reusing steel billets, the industry can alleviate the demand for newly manufactured steel and conserve natural resources. Moreover, steel billets can be recycled through continuous casting. In this technique, the molten steel is poured into a continuous casting machine, resulting in the formation of solid billets. These billets can then undergo hot or cold rolling processes to produce various steel products such as bars, rods, or wire. Furthermore, steel billets can be melted and recast into different forms via remelting. Technologies like induction melting or vacuum arc remelting can be employed to purify the steel and achieve desired chemical and mechanical properties. Remelting facilitates the production of high-quality steel billets suitable for specialized applications in industries such as aerospace, defense, or medical sectors. In conclusion, steel billets are effectively recycled or reused through processes like electric arc furnace steelmaking, continuous casting, remelting, and reshaping. These methods not only contribute to the sustainability of the steel industry but also aid in resource conservation, emission reduction, and meeting the rising demand for steel products.
- Q:How are steel billets cast into shape?
- Steel billets are cast into shape using a process called continuous casting. This process involves pouring molten steel into a water-cooled copper mold, which is in the shape of a billet. As the steel is poured, it begins to solidify along the walls of the mold. At the bottom of the mold, a water spray is used to rapidly cool the steel, causing it to solidify completely. As the steel solidifies, it is continuously pulled out of the mold by a set of rollers or by a chain conveyor. Once the billet is completely solidified, it is cut into desired lengths using a high-speed torch or saw. These cut billets are then transported to the next stage of the steel manufacturing process, such as rolling or forging, where they are further shaped into the final desired product. Continuous casting allows for the production of steel billets with a consistent cross-sectional shape and size. This process is highly efficient and produces high-quality steel products with minimal waste.
- Q:How are steel billets used in the production of rebar?
- The production of rebar relies heavily on steel billets, which serve as a vital raw material. Rebar, or reinforcing bar, is a form of steel reinforcement that is utilized in concrete structures for added strength and stability. The process of manufacturing rebar commences with the creation of steel billets. Steel billets are solid, semi-finished steel products that typically exhibit a square or rectangular shape. They are generated through the casting procedure, in which molten steel is poured into molds and allowed to solidify. Once solidified, the billets are prepared for use in various applications, including the production of rebar. To produce rebar, the steel billets are initially heated to a high temperature within a furnace. This stage, known as hot rolling, renders the steel malleable and pliable. The heated billets are then passed through a sequence of rolling mills, where they are shaped into elongated, cylindrical rods with specific diameters. Throughout the rolling process, the steel billets endure immense pressure and heat, resulting in the alignment of the steel grains and an increase in strength. The rods are continuously rolled until they attain the desired dimensions and lengths. Once the rolling process is completed, the rods undergo cooling and are subsequently cut into standardized lengths for the purpose of being sold as rebar. The resulting rebar is a robust and enduring steel reinforcement that finds extensive usage in construction projects. It is commonly embedded within concrete structures, such as buildings, bridges, and highways, in order to enhance their capacity to bear weight and withstand tension and bending forces. The utilization of rebar assists in the prevention of cracking and failure of concrete structures, thereby ensuring their long-term durability and safety. In conclusion, steel billets play a critical role in the production of rebar as they undergo transformation via the hot rolling process, ultimately becoming elongated, cylindrical rods. These rods, once cooled and cut, serve as an indispensable reinforcement element within concrete structures, providing strength and stability to the overall construction.
- Q:How are steel billets shaped into other forms?
- A process known as hot rolling is used to transform steel billets into different forms. This process involves feeding the steel billet through heated rollers, which compress and mold it into the desired shape. To begin, the steel billet is heated to a high temperature in a furnace. This heat treatment makes the steel more malleable and easier to shape. Once the billet has reached the desired temperature, it is then sent into a rolling mill. Within the rolling mill, the billet undergoes a series of passes through rollers that apply pressure and force to shape the steel. These rollers come in various shapes and sizes depending on the desired outcome. As the billet passes through the rollers, it gradually takes on the desired form, such as sheets, bars, or beams. The rolling process not only shapes the steel but also improves its mechanical properties. It refines the grain structure, enhances strength and toughness, and eliminates any internal defects. This makes the steel more suitable for a range of applications, including construction, automotive, and machinery. Following the hot rolling process, the steel often undergoes additional processing through cold rolling. This involves passing the steel through cold rollers to further refine its surface finish and dimensions. Additionally, secondary operations like cutting, bending, and welding may be carried out to further shape the steel into the desired end product. In conclusion, hot rolling plays a vital role in transforming steel billets into various forms. It enables the production of a wide range of steel products, each with its own unique shape, size, and mechanical properties. This helps meet the diverse needs of industries worldwide.
- Q:What is the role of steel billets in the construction of commercial buildings?
- Steel billets play a crucial role in the construction of commercial buildings as they are the primary raw material used for manufacturing structural steel sections. These sections are used to construct the framework, columns, beams, and other load-bearing elements of the building. The high strength and durability of steel make it an ideal material for commercial buildings, as it can withstand heavy loads, resist deformation, and provide structural integrity. Steel billets are melted and cast into various shapes and sizes to create different sections, such as I-beams, H-beams, channels, angles, and plates. These sections are then fabricated, welded, and assembled to form the skeletal structure of the building. Steel billets are often utilized to produce long steel bars or rods, which are commonly used as reinforcement in concrete structures. Reinforced concrete is widely used in commercial buildings due to its ability to combine the compressive strength of concrete with the tensile strength of steel. Moreover, steel billets are essential in providing stability and support to the overall structure. They help distribute the weight and loads evenly throughout the building, ensuring the safety and integrity of the construction. Additionally, steel is a highly fire-resistant material, reducing the risk of damage in case of fire incidents and enhancing the overall safety of the building. Furthermore, steel billets offer design flexibility and cost-effectiveness. They can be easily fabricated and customized to meet the specific requirements of the building design, allowing architects and engineers to create innovative and efficient structures. Steel structures are also lightweight compared to traditional construction materials, reducing the overall weight of the building and potentially lowering construction costs. In conclusion, steel billets are integral to the construction of commercial buildings as they provide the necessary strength, durability, and stability required for the structural framework. Their versatility, fire-resistance, and cost-effectiveness make them a preferred choice for architects, engineers, and contractors in the construction industry.
- Q:What are the common surface defects in steel billets during reheating?
- During the reheating process of steel billets, several common surface defects may occur. These defects can have a negative impact on the quality and integrity of the final product. Some of the most common surface defects in steel billets during reheating include: 1. Scale Formation: When steel billets are exposed to high temperatures, a layer of iron oxide, known as scale, can form on the surface. Scale is brittle and can easily crack or flake off, leading to a rough and uneven surface. 2. Decarburization: Decarburization is the loss of carbon from the surface of the steel billets due to exposure to high temperatures. This can result in a reduced carbon content on the surface, making it prone to cracking, reduced hardness, and poor mechanical properties. 3. Surface Oxidation: Steel billets can undergo oxidation when exposed to oxygen in the air during reheating. This can lead to the formation of a thin layer of oxide on the surface, affecting the surface finish and potentially reducing the corrosion resistance of the steel. 4. Overheating: Overheating during reheating can cause localized melting or partial melting of the steel billets. This can result in surface irregularities, such as pits, cracks, or blisters, which compromise the integrity of the billets. 5. Hot Spots: Uneven heating of the steel billets can lead to the formation of hot spots on the surface. These localized areas of excessive heat can cause surface defects like warping, cracking, or surface defects like scorching or discoloration. 6. Surface Contamination: During reheating, steel billets can come into contact with contaminants, such as dirt, oil, or other foreign materials. These contaminants can adhere to the surface of the billets, leading to surface defects like stains, pitting, or uneven surface finish. 7. Thermal Shock: Rapid changes in temperature during reheating can cause thermal shock, leading to surface defects like cracks or distortions. This can occur when the steel billets are exposed to water or a cooling medium or when there are substantial temperature differences across the surface of the billets. To minimize these surface defects in steel billets during reheating, proper heating techniques, control of heating rates, and the use of protective coatings or atmospheres can be employed. Additionally, regular inspection and quality control measures can help identify and mitigate surface defects before they affect the final product's quality.
- Q:How are steel billets used in the manufacturing of valves and fittings?
- Steel billets are used in the manufacturing of valves and fittings as the starting material. These billets are heated and then mechanically or forge pressed to shape them into the desired valve or fitting component. The billets provide the necessary strength and durability required for these critical components in various industries.
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Prime quality square alloy steel billet 155mm Q235
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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