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: What are the advantages of using lead-alloy steel round bars?: Using lead-alloy steel round bars has numerous advantages: 1. Enhanced machinability: The presence of lead in the alloy greatly improves the machinability of the round bars. By acting as a lubricant during machining processes, lead reduces friction and heat generation. This results in longer tool life and superior surface finish for the machined components. 2. Superior wear resistance: Lead-alloy steel round bars possess exceptional wear resistance, making them ideal for applications involving abrasive conditions or frequent contact with other surfaces. The inclusion of lead in the alloy helps minimize wear and tear, thereby prolonging the lifespan of the round bars. 3. Improved thermal conductivity: Compared to regular steel, lead has higher thermal conductivity. As a result, lead-alloy steel round bars exhibit superior heat dissipation properties, making them suitable for applications that involve high temperatures. This characteristic effectively prevents overheating and potential damage to the material. 4. Reduced vibration and noise: The presence of lead in the alloy aids in dampening vibrations and reducing noise levels. This is particularly advantageous in applications where noise reduction is crucial, such as in construction equipment or automotive components. 5. Easy machinability of leaded zones: Selective machining of lead-alloy steel round bars allows the creation of leaded zones. These zones effectively act as self-lubricating areas, reducing friction and wear between moving parts. This feature proves highly beneficial in applications where frequent lubrication is impractical or unfeasible. 6. Cost-effective solution: Lead-alloy steel round bars provide a cost-effective solution for various industries. By enhancing performance and durability without significantly increasing the overall cost, the inclusion of lead in the alloy makes these round bars a popular choice for many applications.

Q: Can steel round bars be used for making stabilizer bars?: Yes, steel round bars can be used for making stabilizer bars. Steel round bars are commonly used in various industries, including automotive, for their high strength and durability. Stabilizer bars require materials that can withstand heavy loads and provide stability, making steel round bars an ideal choice for their construction.

Q: Can steel round bars be hardened through heat treatment?: Yes, steel round bars can be hardened through heat treatment. Heat treatment is a process that involves heating the steel to a specific temperature and then rapidly cooling it to achieve the desired hardness and strength. There are different heat treatment methods, such as quenching and tempering, which can be used to harden steel round bars. Quenching involves heating the steel to a critical temperature and then rapidly cooling it in a liquid medium, such as oil or water, to achieve maximum hardness. Tempering, on the other hand, involves reheating the quenched steel to a lower temperature to reduce brittleness and improve toughness while maintaining a desirable hardness level. Heat treatment can significantly improve the mechanical properties of steel round bars, making them suitable for various applications that require high strength and hardness.

Q: What are the different specifications for steel round bars?: The different specifications for steel round bars typically include the diameter, length, and grade of the steel. Other specifications may include the tolerance levels for diameter and length, as well as any specific requirements for surface finish or heat treatment.

Q: How do you prevent warping during welding of steel round bars?: To prevent warping when welding steel round bars, there are several precautions that can be taken: 1. Ensure proper fit-up: Before welding, make sure the round bars are correctly aligned and fitted together. Any gaps or misalignments can cause uneven heating and cooling, increasing the likelihood of warping. 2. Divide welding into smaller sections: Instead of continuously welding along the entire length of the round bar, break it down into multiple smaller sections. This will help distribute heat more evenly and decrease the risk of warping. 3. Use low heat input techniques: Employ welding techniques like pulse welding or tack welding that minimize heat input. These methods allow for controlled and intermittent heating, reducing the chances of warping. 4. Consider preheating: Preheating the round bars before welding can also prevent warping, especially with thicker bars or when welding dissimilar metals. Preheating helps minimize the temperature difference between the weld and the surrounding material, reducing the risk of warping. 5. Monitor and control heat input: Keep a close eye on the heat input during welding. Excessive heat can cause rapid expansion and contraction, leading to warping. Use appropriate welding parameters, such as lower amperage and shorter welding times, to control the heat input. 6. Utilize welding fixtures: Use welding fixtures or jigs to securely hold the round bars in place during welding. This helps maintain proper alignment and prevents movement, reducing the chance of warping. 7. Allow for natural cooling: After welding, let the round bars cool down slowly and naturally. Avoid rapid cooling methods like quenching, as they can induce stress and increase the risk of warping. By implementing these measures, the likelihood of warping when welding steel round bars can be significantly reduced, resulting in higher quality and more dependable welded joints.

Q: Can steel round bars be used for construction purposes?: Yes, steel round bars can be used for construction purposes. Steel round bars are commonly used in construction for various applications such as reinforcement in concrete structures, as support for beams and columns, and as structural components in bridges, buildings, and infrastructure projects. The high tensile strength and durability of steel make it an ideal choice for construction purposes, as it can withstand heavy loads, provide stability, and ensure the longevity and safety of the structures. Additionally, steel round bars are versatile and can be easily fabricated and customized to meet specific project requirements. Therefore, steel round bars are widely used in the construction industry due to their excellent mechanical properties, reliability, and cost-effectiveness.

Q: What are the common alloying elements used in steel round bars?: The common alloying elements used in steel round bars are carbon, manganese, silicon, and sometimes chromium, nickel, and molybdenum.

Q: How do steel round bars compare to copper round bars?: Different applications call for distinct properties in steel and copper round bars. To begin with, steel round bars are known for their remarkable strength and durability. This versatile material can withstand high levels of stress, making it perfect for structural and industrial uses. With its high tensile strength, steel can resist pulling forces without breaking. Construction projects, automotive components, and machinery manufacturing frequently rely on steel round bars. On the other hand, copper round bars possess unique characteristics that set them apart from steel. Copper is an exceptional conductor of heat and electricity, making it indispensable in electrical wiring and plumbing systems. Its high resistance to corrosion makes copper pipes widely used in plumbing applications. Additionally, copper's antimicrobial properties make it a preferred material for medical equipment and food processing industries. When it comes to cost, steel round bars tend to be more affordable than copper round bars. Steel is abundantly available and has lower production costs compared to copper. This cost advantage makes steel a popular choice for budget-conscious applications. In terms of appearance, steel round bars have a sleek, metallic finish, while copper round bars exhibit a distinct reddish-brown appearance. This visual distinction often influences the selection of materials in architectural and decorative applications. In summary, steel round bars and copper round bars possess different properties that suit them for specific purposes. Steel offers exceptional strength and durability, making it suitable for structural and industrial applications. Copper, on the other hand, is valued for its conductivity, corrosion resistance, and antimicrobial properties, making it ideal for electrical, plumbing, and medical applications. The choice between steel and copper depends on the specific requirements of the project and the desired properties of the material.

Q: Can steel round bars be welded to other materials?: Yes, steel round bars can be welded to other materials. Welding is a common method used to join different materials together, including steel round bars and various other materials such as aluminum, stainless steel, and even non-metallic materials like plastics. However, it is important to note that the compatibility of the materials being welded is crucial for a successful weld. The welding process requires the use of appropriate welding techniques, filler metals, and sometimes pre-heating or post-weld heat treatment to ensure a strong and durable bond between the steel round bar and the other material. It is also important to consider the specific application and the properties required for the joint to determine the most suitable welding method and materials.

Q: Can steel round bars be used in the production of valves?: Valves can indeed utilize steel round bars during their production. The utilization of steel round bars typically occurs when forming the primary structure or stem of the valve. The circular form of the bar facilitates uncomplicated machining and molding into the desired valve constituent. Steel, renowned for its robustness and endurance, emerges as an optimal selection for valves, as they necessitate the capacity to withstand elevated pressures and temperatures. Furthermore, steel lends itself to effortless welding, permitting the affixation of additional valve components like flanges or fittings. To summarize, steel round bars furnish the essential potency and adaptability requisite for valve manufacturing.

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