Hot Rolled A36 Carbon Steel Round Bars System 1

Hot Rolled A36 Carbon Steel Round Bars System 2

Hot Rolled A36 Carbon Steel Round Bars System 3

Hot Rolled A36 Carbon Steel Round Bars System 4

Hot Rolled A36 Carbon Steel Round Bars

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Household Appliance	Refrigerator shutter &side panels, Rice Cooker, Washer, Microwave Ovens, Freezers, Air conditions, Water Heaters, Sterilization Cabinets, Range Hoods, Computer Panels , DVD/DVB panels, TV back panel etc.
Construction Material	Fireproof Door &Kitchen Cabinet ,Ceiling, Sanitary Unit, Elevator etc.
Transportation	Car, Ship, Trains, Aircraft Equipment. etc.
Education and Health Field	Electronic Writing Boards, Projection Screens, Clean Operating Rooms, etc.

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Carbon Steel	Mold bottom, Plastic mold, Construction machinery parts Automobile parts, Security grills, Screens, Construction
Bearing Steel	Aerospace, Navigation, Nuclear energy, Chemical industry Electronic information, Petrochemical, Instrument and meter Transportation
Cr-Mo Steel	Mechanism & Fasteners gear, Stressed components for vehicles Engines and machines, Parts of larger cross-section
Gear Steel	All kinds of gears, Statically and dynamically stressed component for vehicles Engines and machine, Larger cross-section parts, Crankshafts

Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

FAQ

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

5, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q: Can steel round bars be used for valve stem applications?: Steel round bars can indeed be utilized for valve stem applications. Their exceptional strength and durability make them a popular choice in numerous industrial settings. In valve stem applications, steel round bars are frequently employed to offer stability and structural support to the valve stem, thus guaranteeing seamless operation and enduring performance. Moreover, steel round bars can be effortlessly machined and fabricated to meet precise specifications, rendering them an adaptable option for valve stem applications.

Q: Are steel round bars resistant to chemicals or acids?: Yes, steel round bars are generally resistant to chemicals and acids due to their high corrosion resistance properties. However, the level of resistance may vary depending on the specific type of steel and the concentration and temperature of the chemicals or acids involved.

Q: What are the different grades of stainless steel round bars for marine applications?: There are several different grades of stainless steel round bars that are commonly used for marine applications. The most common grades include 304, 316, and 316L stainless steel. Grade 304 stainless steel is a versatile and widely used alloy that offers good corrosion resistance, high strength, and excellent formability. It is often used for marine applications where moderate corrosion resistance is required. Grade 316 stainless steel is similar to grade 304, but it contains additional molybdenum, which enhances its corrosion resistance, especially against chlorides and other aggressive environments commonly encountered in marine applications. This grade is often preferred for marine environments where increased resistance to corrosion is necessary. Grade 316L stainless steel is a low carbon version of grade 316, which further improves its resistance to sensitization and intergranular corrosion. This makes it highly suitable for marine applications where welding is required, as it minimizes the risk of corrosion at the welds. In addition to these grades, there are also specialized stainless steel alloys such as duplex stainless steel, which combines the benefits of austenitic and ferritic stainless steels. These alloys offer even higher corrosion resistance and strength, making them suitable for more demanding marine applications. When selecting the grade of stainless steel round bars for marine applications, it is important to consider the specific environmental conditions, such as exposure to saltwater, chemicals, or high temperatures. Consulting with a materials specialist or referring to industry standards can help ensure the right grade is chosen for the specific marine application.

Q: What are the advantages of using wear-resistant steel round bars?: Wear-resistant steel round bars offer numerous benefits: 1. Enhanced durability: These round bars are specifically designed to withstand high levels of abrasion and wear. They have a high hardness level, which makes them resistant to surface damage caused by friction, impact, or scraping. As a result, their lifespan is extended, reducing the need for frequent replacements. 2. Increased strength: Wear-resistant steel round bars possess exceptional strength properties, allowing them to withstand heavy loads and extreme conditions. This makes them suitable for various applications in industries like mining, construction, manufacturing, and transportation, where strength and resilience are crucial. 3. Improved safety: By using wear-resistant steel round bars, a safer working environment is ensured. Their high resistance to wear minimizes the risk of accidents and injuries caused by equipment failures or structural damage. This is particularly important in industries involving heavy machinery, tools, or structures. 4. Cost-effectiveness: Although wear-resistant steel round bars may have a higher initial cost compared to regular steel bars, their extended lifespan and reduced maintenance requirements make them a cost-effective choice in the long run. The reduced need for replacements and repairs leads to lower downtime, increased productivity, and ultimately, decreased operational costs. 5. Versatility: Wear-resistant steel round bars can be used in a variety of applications due to their versatility. They can be easily machined, welded, or formed into different shapes and sizes to meet specific requirements. This flexibility allows for their use in various industries and applications, making them an ideal choice for many projects. To sum up, the advantages of using wear-resistant steel round bars include enhanced durability, increased strength, improved safety, cost-effectiveness, and versatility. These properties make them a reliable and efficient option for applications where wear and tear are significant concerns.

Q: What are the different heat treatment processes used for steel round bars?: Steel round bars can undergo several heat treatment processes to enhance their mechanical properties and overall performance. These processes include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing involves heating the steel round bars to a specific temperature and then slowly cooling it to relieve internal stresses and improve ductility. It also refines the grain structure, making the steel softer and more workable. 2. Normalizing is similar to annealing, but the steel round bars are cooled in still air. This process refines the grain structure and improves mechanical properties like strength and toughness. 3. Quenching is a rapid cooling process where the steel round bars are immersed in a quenching medium such as oil, water, or polymer. It achieves high hardness and strength by transforming the steel's microstructure into martensite. However, it can also make the steel more brittle, so tempering is often done afterward. 4. Tempering involves reheating the quenched steel round bars to a specific temperature and then slowly cooling it. This process reduces the brittleness caused by quenching and improves toughness and ductility. The temperature and duration of tempering can be adjusted for desired mechanical properties. 5. Case hardening is a surface heat treatment process that increases hardness and wear resistance. Carbon or other alloying elements are introduced to the steel's surface, which is then heated to a specific temperature. This creates a hardened outer layer while maintaining a tough core. These heat treatment processes offer steel round bars a wide range of mechanical properties and performance characteristics, making them suitable for various applications in industries like automotive, construction, manufacturing, and aerospace. The choice of specific heat treatment process depends on desired properties, steel composition, and intended application of the round bars.

Q: What are the advantages of using cobalt-alloy steel round bars?: There are several advantages to using cobalt-alloy steel round bars in various industries and applications. Firstly, cobalt-alloy steel has exceptional strength and hardness, making it highly resistant to wear, corrosion, and high temperatures. This makes it suitable for demanding environments where other materials would fail or degrade quickly. Secondly, cobalt-alloy steel has excellent dimensional stability, meaning it maintains its shape and size even under extreme conditions. This makes it ideal for applications that require precise tolerances and minimal deformation, such as in the aerospace and automotive industries. Additionally, cobalt-alloy steel has excellent heat resistance, allowing it to retain its mechanical properties even at elevated temperatures. This makes it valuable in applications that involve high-speed machining, cutting tools, and turbine components. Moreover, cobalt-alloy steel round bars can be easily machined and fabricated, allowing for customization and versatility in various applications. Their high machinability and weldability make them suitable for use in manufacturing processes, such as forging, casting, and machining. Furthermore, cobalt-alloy steel round bars have excellent fatigue resistance, ensuring long-lasting performance and durability. This makes them suitable for applications that involve repetitive stress or cyclic loading, such as shafts, springs, and fasteners. Lastly, cobalt-alloy steel is known for its biocompatibility, making it suitable for medical and dental applications. It is commonly used in orthopedic implants, surgical tools, and dental instruments due to its corrosion resistance and biocompatibility properties. In summary, the advantages of using cobalt-alloy steel round bars include exceptional strength, hardness, and dimensional stability, as well as heat resistance, machinability, fatigue resistance, and biocompatibility. These qualities make them valuable in a wide range of industries and applications, offering reliability, durability, and performance.

Q: What are the different types of steel round bar alloys for improved corrosion resistance?: There are several types of steel round bar alloys that are known for their improved corrosion resistance. Some of the commonly used alloys include stainless steel, weathering steel, and duplex stainless steel. 1. Stainless Steel: This alloy contains a minimum of 10.5% chromium, which forms a thin, protective layer of chromium oxide on the surface of the steel. This layer acts as a barrier against corrosion, making stainless steel highly resistant to rust and other forms of corrosion. Different grades of stainless steel, such as 304 and 316, offer varying levels of corrosion resistance depending on the specific application. 2. Weathering Steel: Also known as Corten steel, weathering steel develops a protective rust-like appearance when exposed to the weather. This self-healing characteristic makes it resistant to atmospheric corrosion. The addition of copper, chromium, and nickel in weathering steel enhances its corrosion resistance and enables it to withstand harsh environmental conditions without the need for painting. 3. Duplex Stainless Steel: Duplex stainless steel is a combination of austenitic and ferritic stainless steels. This alloy offers excellent corrosion resistance due to its high chromium and molybdenum content. Duplex stainless steel is particularly resistant to localized corrosion, such as pitting and crevice corrosion, making it suitable for applications in aggressive environments like marine and chemical industries. It is important to note that the choice of steel round bar alloy for improved corrosion resistance depends on the specific application requirements and environmental conditions. Consulting with a materials engineer or corrosion specialist can help determine the most suitable alloy for a particular application.

Q: Are steel round bars suitable for conveyor belt applications?: Depending on various factors, conveyor belt applications can benefit from the use of steel round bars. These bars are renowned for their strength, durability, and resistance to wear and tear, making them a viable choice for applications involving heavy loads, high speeds, or abrasive materials. One of the main advantages of utilizing steel round bars in conveyor belt applications lies in their ability to withstand heavy loads. Their strength ensures that the bars can support the weight of conveyed materials without bending or breaking. This is particularly crucial in industries where continuous transportation of large quantities of bulky or heavy materials is required. Moreover, steel round bars exhibit high resistance to wear and tear. The smooth surface of the bars reduces friction, resulting in minimal wear on the conveyor belt and prolonging its lifespan. This is especially important in applications where the conveyor belt constantly moves and comes into contact with abrasive materials, such as in the mining or construction industries. Additionally, steel round bars are capable of withstanding high speeds without compromising their structural integrity. Their high tensile strength enables them to handle the forces exerted on the conveyor belt during acceleration or deceleration. As a result, the conveyor system operates smoothly and efficiently, reducing downtime and enhancing productivity. However, it is crucial to consider the specific requirements of the conveyor belt application when selecting steel round bars. Factors such as the type of conveyed materials, the operating environment, and the specific load and speed requirements should be carefully evaluated. In certain cases, alternative materials or coatings may be necessary to enhance the performance and longevity of the conveyor system. In conclusion, steel round bars can be a suitable choice for conveyor belt applications due to their strength, durability, and resistance to wear and tear. Nonetheless, careful consideration of the specific application requirements is essential to ensure optimal performance and longevity of the conveyor system.

Q: How do you prevent scaling of steel round bars during heat treatment?: To prevent scaling of steel round bars during heat treatment, there are several measures that can be taken: 1. Use a protective atmosphere: Heat treatment can be carried out in a controlled atmosphere, such as in a furnace with a controlled gas environment. This prevents the exposure of the steel bars to oxygen, which is the primary cause of scaling. 2. Apply a protective coating: Coating the steel round bars with a protective substance, such as a refractory material or a thin layer of paint, can help prevent scaling. This coating acts as a barrier between the steel and the oxygen in the atmosphere, reducing the chances of scaling. 3. Use a reducing atmosphere: Instead of using a normal atmospheric environment, heat treatment can be conducted in a reducing atmosphere. This involves introducing gases like hydrogen or nitrogen into the furnace, which react with the oxygen to create a more controlled environment and prevent scaling. 4. Control the heating rate: Rapid heating can lead to increased scaling due to the sudden exposure of the steel to high temperatures. By controlling the heating rate, such as using a gradual ramp-up in temperature, scaling can be minimized. 5. Limit the exposure time: Minimizing the time that the steel round bars are exposed to high temperatures can help prevent scaling. This can be achieved by optimizing the heat treatment process and ensuring that the bars are not held at elevated temperatures for longer than necessary. 6. Clean the surface before heat treatment: Prior to heat treatment, it is crucial to remove any contaminants or residues from the surface of the steel round bars. This can be done through mechanical cleaning methods like wire brushing or chemical cleaning techniques, ensuring a clean surface that is less prone to scaling. By implementing these preventative measures, the scaling of steel round bars during heat treatment can be effectively minimized, leading to improved quality and performance of the treated bars.

Q: How do steel round bars compare to other types of steel products?: Steel round bars have several advantages over other types of steel products. Firstly, their cylindrical shape makes them highly versatile and easy to work with, allowing for various applications in construction, manufacturing, and engineering. Secondly, round bars have superior strength and durability, making them ideal for load-bearing structures and heavy-duty machinery. Additionally, their uniformity and smooth surface facilitate precision machining and fabrication processes. Lastly, steel round bars offer excellent resistance to corrosion and wear, ensuring a longer lifespan compared to other steel products. Overall, their unique properties and versatility make steel round bars a preferred choice for many industries.

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