steel billets, square steel bar, mild steel bar China manufacturer
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 800000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Steel billets, square steel bar, mild steel bar China manufacturer
Size:30*30mm-150*150mm
Standard: GB,BS,ASTM
Grade: Q195/215/235/345/45#/3SP/5SP,ect
Application: Carbon structural steel, alloy structural steel, gear steel, spring steel,
bearing steel, etc.
Packaging Detail: exporting standard packing in mill or as request
Delivery Detail: within 15-30 days after receiving deposits or original LC
The Billets produced by the company can be broadly divided into three main types i.e.
1. M.S. Billets
2. CRS Billets
3. Special Alloy Billets
M.S. Billets are used for rolling of TMT Re-Bars of Fe415 and Fe500 Grade and
various other structural steel products.
CRS Billets are used for rolling of CRS TMT Re-Bars.
Special Alloy Billets are used for rolling of any special grade TMT Re-Bars like
Earthquake resistant TMT Re-Bars and for special grade structural steel products.
Steel billets, mild steel bar chemical properties
| Ladle Analysis: | ||
| Designation | Carbon | Manganese |
| C15 | 0.12-0.18 | 0.30-0.60 |
| C18 | 0.15-0.21 | 0.30-0.60 |
| C20 | 0.17-0.23 | 0.30-0.60 |
| C15 MMn | 0.12-0.18 | 0.60-1.00 |
| C18 MMn | 0.15-0.21 | 0.60-1.00 |
| C20 MMn | 0.17-0.23 | 0.60-1.00 |
| C15 HMn | 0.12-0.18 | 1.00-1.50 |
| C18 HMn | 0.15-0.21 | 1.00-1.50 |
| C20 HMn | 0.17-0.23 | 1.00-1.50 |
- Q: How are steel billets classified based on their chemical composition?
- Steel billets are classified based on their chemical composition primarily into three categories: carbon steel, alloy steel, and stainless steel. Carbon steel contains mainly iron and carbon, with trace amounts of other elements. Alloy steel is a combination of iron with other elements, such as manganese, chromium, nickel, or molybdenum, to enhance its mechanical properties. Stainless steel, on the other hand, contains iron along with a minimum of 10.5% chromium, which provides excellent corrosion resistance.
- Q: How are steel billets used in the production of structural steel?
- Steel billets are a crucial component in the production of structural steel. These billets, which are essentially semi-finished steel products, serve as the starting point for the manufacturing process. The first step in making structural steel involves melting scrap steel in a furnace at extremely high temperatures. Once the steel has reached its liquid state, it is poured into molds to form billets. These molds are designed to shape the steel into a solid, rectangular shape with a consistent cross-section. Once the billets have solidified, they are then transferred to a rolling mill. Here, the billets are reheated to a specific temperature and passed through a series of rollers, which gradually reduce the billet's size and shape. This process is known as hot rolling and is essential for refining the steel's mechanical properties. The hot-rolled billets are then further processed through a variety of techniques such as forging, extrusion, or casting to create specific shapes and sizes required for structural applications. These techniques allow the billets to be transformed into beams, columns, plates, or other structural components. After the desired shape is achieved, the structural steel undergoes various treatments to enhance its strength, durability, and resistance to corrosion. This may include heat treatment, surface coating, or additional alloying elements. Finally, the finished structural steel products are used in a wide range of applications, including the construction of buildings, bridges, and infrastructure projects. The consistent size and shape of the steel billets ensure that the resulting structural steel components have the necessary strength, stability, and structural integrity to withstand the loads and stresses they will encounter in their designated roles. In summary, steel billets play a crucial role in the production of structural steel. They serve as the starting material, which is transformed through various processes into the desired shapes and sizes required for construction projects. The quality and consistency of the billets are essential in ensuring the strength and durability of the final structural steel products.
- Q: What are the different types of steel billets used in the manufacturing industry?
- The manufacturing industry utilizes various types of steel billets, each possessing unique properties and qualities. Here are a few examples: 1. Carbon Steel Billets: Predominantly composed of iron and carbon, carbon steel billets are widely utilized due to their exceptional strength and durability. They find applications in construction, automotive, and machinery manufacturing sectors. 2. Alloy Steel Billets: By introducing alloying elements like manganese, nickel, chromium, and molybdenum to carbon steel, alloy steel billets exhibit enhanced characteristics such as increased strength, hardness, and resistance to corrosion. They are commonly employed in the production of high-strength components and machinery parts. 3. Stainless Steel Billets: Consisting of iron, chromium, and other alloying elements like nickel and molybdenum, stainless steel billets demonstrate exceptional resistance to corrosion and staining. They are extensively used in the manufacturing of kitchen appliances, automotive parts, and medical equipment. 4. Tool Steel Billets: Tailored specifically for the production of tools, dies, and molds, tool steel billets possess superior hardness, wear resistance, and toughness. These attributes make them ideal for applications involving cutting, shaping, or molding materials. 5. Micro-Alloyed Steel Billets: This category of billets incorporates trace amounts of alloying elements such as vanadium, niobium, or titanium. Micro-alloyed steel billets are employed to enhance the strength and toughness of the steel, rendering them suitable for structural applications in industries like construction and transportation. It is crucial to recognize that these examples represent only a fraction of the various specialized steel billets available in the manufacturing industry. Each type is tailored to meet specific requirements for different applications and industries.
- Q: Are steel billets magnetic?
- Yes, steel billets are magnetic. Steel is an alloy primarily composed of iron, which is a ferromagnetic material. This means that it can be magnetized and therefore exhibits magnetic properties. Steel billets, being solid blocks or bars of steel, retain the magnetic properties of the material they are made from.
- Q: What are the different surface treatments for improved formability in steel billets?
- There are several different surface treatments that can be used to improve formability in steel billets. These treatments are designed to enhance the ability of the steel to be shaped and formed without cracking or breaking. One common surface treatment for improved formability is the application of a lubricant or coating. This can help to reduce friction between the steel and the forming tools, making it easier to shape the billet without causing damage. Lubricants can be applied in the form of oils, greases, or solid films, and they can be used in both hot and cold forming processes. Another surface treatment for improved formability is shot peening. This involves bombarding the surface of the steel with small, high-velocity steel or ceramic particles. This creates a compressive stress layer on the surface, which can help to prevent crack initiation and propagation during forming. Shot peening can also improve the fatigue resistance of the steel. In some cases, heat treatment can be used to improve formability. This involves heating the steel to a specific temperature and then rapidly cooling it. This process, known as quenching and tempering, can alter the microstructure of the steel, making it more ductile and easier to shape. Heat treatment can also help to relieve residual stresses in the steel, which can improve formability. Finally, surface coatings can be applied to steel billets to improve formability. These coatings can provide a barrier between the steel and the forming tools, reducing friction and preventing wear. Coatings can be applied using various methods, such as electroplating, thermal spraying, or chemical vapor deposition. In conclusion, there are several different surface treatments that can be used to improve formability in steel billets. These treatments include the application of lubricants or coatings, shot peening, heat treatment, and surface coatings. Each of these treatments has its own advantages and can be used depending on the specific requirements of the forming process.
- Q: What are the physical properties of steel billets?
- Steel billets possess various physical properties that render them highly suitable for a multitude of industrial applications. Primarily, they exhibit a remarkable strength-to-weight ratio, ensuring impeccable structural integrity and the ability to endure heavy loads without deformation or breakage. Another significant physical attribute of steel billets lies in their hardness. Steel is renowned for its hardness, which grants it resistance against wear and tear. Consequently, steel billets prove to be ideal for sectors where durability and long-term performance are of utmost importance, such as construction, automotive, and machinery industries. Furthermore, steel billets boast a lofty melting point, enabling them to withstand extreme heat without deformation or liquefaction. This trait proves indispensable in applications involving high temperatures, such as the manufacturing of tools, machinery, and equipment within the aerospace and energy sectors. Additionally, steel billets exhibit exceptional ductility and malleability, facilitating their effortless manipulation into diverse structures and products. This adaptability makes steel billets highly versatile and amenable to various manufacturing processes, including rolling, forging, and extrusion. Moreover, steel billets demonstrate commendable electrical and thermal conductivity, rendering them suitable for applications that necessitate efficient heat transfer and electrical conduction. These properties hold particular value in the production of electrical wiring, power transmission lines, and heat transfer equipment. In conclusion, steel billets possess key physical properties encompassing high strength, hardness, melting point, ductility, malleability, and conductivity. These attributes enable their utilization across a wide range of industries and applications, where their exceptional performance and reliability are indispensable.
- Q: How are steel billets inspected for surface cleanliness?
- Steel billets are inspected for surface cleanliness through a series of visual and nondestructive testing methods. One of the commonly used techniques is visual inspection, where trained inspectors visually examine the surface of the billets for any visible impurities, such as scale, rust, dirt, or any other contaminants. This method helps identify any surface irregularities that may affect the quality of the billets. Additionally, nondestructive testing methods like magnetic particle inspection (MPI) and ultrasonic testing (UT) are employed to further evaluate the surface cleanliness of steel billets. Magnetic particle inspection involves applying a magnetic field to the billet's surface and then applying iron particles to it. If any surface cracks or defects are present, the iron particles will be attracted to these areas, making them visible to the inspector. Ultrasonic testing, on the other hand, uses high-frequency sound waves to detect any internal or surface defects. A probe is placed on the billet's surface, and sound waves are transmitted into the material. These waves are then reflected back to the probe and analyzed to identify any defects, such as inclusions or voids, which may affect the surface cleanliness. Overall, a combination of visual inspection, magnetic particle inspection, and ultrasonic testing is used to ensure that steel billets meet the required surface cleanliness standards. These inspection methods help identify any impurities or defects that could potentially compromise the quality and performance of the final steel product.
- Q: How are steel billets inspected for dimensional accuracy?
- Steel billets are inspected for dimensional accuracy using various methods such as calipers, micrometers, and laser measurement devices. These tools are used to measure the length, width, and height of the billets and ensure they meet the required specifications. Additionally, visual inspections are also conducted to check for any defects or irregularities in the shape and size of the billets.
- Q: What are the common surface defects found in steel billets?
- Some common surface defects found in steel billets are scale, cracks, laps, seams, and surface decarburization.
- Q: What are the different surface defects that can occur in steel billets?
- Steel billets can suffer from a variety of surface defects. Among the most common are: 1. Scale: During heating, a rough, flaky oxide layer known as scale can form on the billet's surface. This coating can negatively impact the final product's quality. 2. Cracks: Thermal stress, improper handling, or excessive cooling can cause cracks to appear on the billet's surface. These cracks can be either longitudinal or transverse and compromise the overall structural integrity of the billet. 3. Decarburization: High temperatures or chemical reactions can lead to the reduction of carbon content at the steel's surface, a process known as decarburization. This weakens the outer layer, affecting the billet's mechanical properties. 4. Pits: Corrosion, inadequate cleaning, or chemical reactions can result in small depressions or cavities on the billet's surface, known as pits. Pits can reduce strength and create localized stress concentrations. 5. Surface roughness: Improper handling, insufficient machining, or poor surface finishing can leave steel billets with uneven or rough surfaces. This can impact the final product's appearance and performance. 6. Inclusions: Non-metallic materials become trapped in the steel during manufacturing, forming inclusions. They can appear as dark spots, streaks, or irregular shapes on the billet's surface. Inclusions weaken the steel and decrease its ductility. 7. Surface contamination: Handling or storage can introduce foreign materials like dirt, oil, or grease to steel billets, leading to surface defects, corrosion, or compromised quality. Detecting and addressing these surface defects early in the manufacturing process is crucial to ensure high-quality steel billets. Various inspection techniques, including visual examination, ultrasonic testing, and magnetic particle inspection, can be used to identify and mitigate these defects.
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steel billets, square steel bar, mild steel bar China manufacturer
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 800000 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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