Hot Rolled Alloy Carbon Structural Steel Bars

Hot Rolled Alloy Carbon Structural Steel Bars System 1

Hot Rolled Alloy Carbon Structural Steel Bars System 2

Hot Rolled Alloy Carbon Structural Steel Bars System 3

Hot Rolled Alloy Carbon Structural Steel Bars System 4

Hot Rolled Alloy Carbon Structural Steel 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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Product Name	Alloy Steel 1.2379
Standard	ASTM A689, JIS G4801, DIN 17221, GB/T 18254, ASTM A295, JIS G4805, etc.
Spring steel	65Mn, 1566, 60Si2Mn, 9260, etc.
Bearing steel	GCr15, SAE52100, GCr15SiMn, 100CrMnSi6-4, SJU2, etc.
Cold heading steel	ML25, ML35, etc.
Alloy structural steel	40CrNiMo, SAE4330, 42CrMo, 15Cr2Ni2, 40CrNi2Mo, 35CrMoV, 12Cr1MoV, ASTM4130, SCM420, 40CrV, etc.
Military steel	20Cr2Ni4A, 18Cr2Ni4WA, 23CrNiMo7-4-7, etc.
Heat resistant steel	5CrNiMoV, 4Cr10Si2Mo, etc.
Mold and tool steel	SKD62, Cr12, 31CrMoV9, H11, 4Cr5MoSiV1, SKD61, DIN1.2344, H13, 35CrMoV, Cr12Mo1V1, SKD11, X153CrMoV12, D2, O1, DIN1.2510, P20, DIN1.2311, 3Cr2Mo, 9CrWMn, 4Cr13, AISI420, DIN1.2083, Cr12MoV, DIN1.2601, P20+Ni, Cr8Mo2SiV, DC53, DIN1.2738, etc.
Gear steel	ASTM8620, SAE4340, SNCM430, 40CrNiMo, etc.
Size	Round bar: 15-1200mm Square bar: 80-800mm
Length	2-12m, as customers' requirement.
Melting process	EAF+LF+VD
Ultrasonic testing	SEP1921-84 C/C, D/D, E/E
Surface treatment	Black, grinded, peeled, polished are available
Delivery condition	Annealing, tempering, quenching + tempering
Technique	hot rolled, cold drawn, forged are available
Package	Standard seaworthy packing, as customers’ requirement
Delivery Time	30 days after receipt of the deposit, negotiable.

Grade	Size (mm)
Round rolled steel (Dia.)	Flat rolled steel	Round forged steel (Dia.)	Square forged steel	Bright bar (Dia.)
High-quality carbon structural steel	16-320	5-38 44-150	120-900	100-750	12-150
Alloy structural steel	16-320	5-38 44-150	120-900	100-750	12-150
Carbon tool steel	16-320	5-38 44-150	120-350	100-310	12-150
Alloy tool steel	30-90		100-900	100-750	12-150
High speed tool steel			80-120	80-110	12-150
Bearing steel	16-320	5-38 44-150	120-300	100-600	12-150
Spring steel	14-180	5-38 44-150	120-300	100-260	12-150
Stainless steel	16-250		120-750	120-600	12-150
High temperature alloy steel			55-200	80-200	12-150
Free-cutting steel	14-250		120-400		12-150
Gear steel	16-320	5-38 44-150	120-900		15-150

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 in the production of flanges?: Yes, steel round bars can be used in the production of flanges. Round bars made of steel are commonly used as raw materials in the manufacturing process of flanges. These round bars are often machined, forged, or rolled into the desired flange shape. Steel round bars offer several advantages in the production of flanges, including high strength, durability, and resistance to corrosion. They can be easily fabricated and machined to meet specific size and dimensional requirements. Steel round bars are widely utilized in various industries, such as oil and gas, petrochemical, power generation, and construction, for producing flanges that are used in piping systems to connect pipes or equipment.

Q:What are the advantages of using steel round bars in construction?: There are several advantages of using steel round bars in construction: 1. Strength and Durability: Steel round bars are known for their exceptional strength and durability. They have a high tensile strength, which means they can withstand heavy loads and provide robust support. This makes them ideal for construction projects that require structural integrity and stability. 2. Versatility: Steel round bars come in various sizes and grades, offering versatility in construction. They can be easily shaped, bent, and welded to fit specific design requirements, making them suitable for a wide range of applications. Whether it's for building frameworks, reinforcement in concrete structures, or even decorative elements, steel round bars can be tailored to meet different project needs. 3. Cost-effectiveness: Steel round bars offer cost-effectiveness in construction due to their long lifespan and low maintenance requirements. They are resistant to corrosion, weathering, and pests, which reduces the need for frequent repairs or replacements. Additionally, their strength allows for the utilization of lighter construction materials, leading to potential cost savings in the overall project. 4. Fire Resistance: Steel round bars have excellent fire-resistant properties, making them a safe choice for construction. They do not burn, melt, or emit toxic fumes under high temperatures, which can be crucial in preventing the spread of fire and ensuring the safety of occupants. 5. Sustainability: Steel is a highly sustainable material as it is 100% recyclable. Using steel round bars in construction contributes to reducing environmental impact by minimizing waste and conserving natural resources. Additionally, the process of recycling steel requires less energy compared to manufacturing it from raw materials, making it an eco-friendly choice. 6. Availability and Quality Control: Steel round bars are readily available in the market, making them easily accessible for construction projects. Moreover, their production undergoes strict quality control measures, ensuring consistent and reliable material properties. This guarantees the structural integrity and safety of the constructed buildings or infrastructures. In conclusion, the advantages of using steel round bars in construction include their strength, versatility, cost-effectiveness, fire resistance, sustainability, availability, and quality control. These attributes make them a popular choice for builders and engineers seeking reliable and efficient materials for their construction projects.

Q:Can steel round bars be plated with other metals?: Steel round bars can indeed be plated with other metals, a process known as plating. Plating involves applying a thin layer of one metal onto the surface of another metal. This is commonly done to enhance the appearance of the steel round bar or to provide it with additional properties like corrosion resistance or improved conductivity. To plate the steel round bar, it is immersed in a solution containing ions of the desired metal. These metal ions are then deposited onto the surface of the steel through the use of electrical currents or chemical reactions, resulting in a thin and even coating. Nickel, chrome, zinc, and copper are among the popular metals used for plating steel round bars. Plating is a versatile and cost-effective technique for enhancing the performance and aesthetics of steel round bars in various applications.

Q:Is round steel bar round steel?: NoRound steel bars refer to hot rolled round steel bars for reinforced concrete. Round bars include high-quality carbon structural steel, round steel, ordinary carbon structural steel round bars, steel bars for prestressed concrete, etc.. Although the shape is round, but the material is different, so steel and round bar is two yards.

Q:How do you determine the strength of a steel round bar?: Various methods can be used to determine the strength of a steel round bar, including physical testing and material specifications. One commonly used method involves conducting a tensile test, where the bar is pulled until it breaks. This test helps determine the ultimate tensile strength (UTS) of the steel, which is the maximum stress it can handle before fracturing. The UTS is typically measured in units of force per cross-sectional area, such as pounds per square inch (psi) or megapascals (MPa). Another important strength property to consider is the yield strength. This is the stress level at which the steel starts to permanently deform, without any increase in load. The yield strength is crucial in assessing the structural integrity of the bar, as it indicates the maximum load it can bear without undergoing plastic deformation. In addition to physical testing, the strength of a steel round bar can also be determined by examining its material specifications. Steel manufacturers provide information about the composition and mechanical properties of their products. This includes details about the steel grade, which indicates the alloying elements present in the steel and their concentrations. Different steel grades have varying strength properties, which can help assess the strength of the round bar. It is important to consider that factors like heat treatment or surface conditions can also influence the strength of a steel round bar. Heat treatment processes, such as quenching and tempering, can enhance the strength and hardness of the steel. Additionally, surface conditions like coatings or treatments can improve corrosion resistance. To accurately determine the strength of a steel round bar, it is recommended to consult the material specifications provided by the manufacturer and, if necessary, conduct physical tests like tensile testing.

Q:Can steel round bars be used for making bridges?: Yes, steel round bars can be used for making bridges. Steel is a commonly used material in bridge construction due to its high strength and durability. Round bars, also known as reinforcing bars or rebars, are often used to reinforce concrete structures, including bridge decks and piers. They provide additional tensile strength and help to distribute loads more evenly, making the bridge more resistant to bending or twisting forces. Additionally, round bars can be used as structural elements in the construction of cable-stayed or suspension bridges, where they are used to support and strengthen the main load-bearing cables. Overall, steel round bars are a versatile and reliable choice for bridge construction, offering the necessary strength and stability required to withstand the heavy loads and harsh environmental conditions experienced by bridges.

Q:What are the different treatments available for steel round bars?: There are several different treatments available for steel round bars, depending on the desired properties and applications. Some common treatments include: 1. Heat Treatment: This process involves heating the steel round bars to a specific temperature and then cooling it rapidly or slowly to alter its mechanical properties. Heat treatment can improve hardness, strength, toughness, and resistance to wear and corrosion. 2. Quenching and Tempering: Quenching involves rapidly cooling the heated steel round bars in a liquid medium, such as water or oil, to increase hardness. Tempering follows quenching and involves reheating the steel to a lower temperature to reduce brittleness and increase toughness. 3. Surface Hardening: This treatment is used to increase the hardness of the outer layer of the steel round bar while maintaining a tough and ductile core. Common surface hardening methods include carburizing, nitriding, and induction hardening. 4. Cold Working: Cold working involves deforming the steel at room temperature through processes like rolling, drawing, or extrusion. This treatment can increase the strength and hardness of the steel round bars, while also improving dimensional accuracy and surface finish. 5. Coating: Applying a protective coating to steel round bars can enhance their resistance to corrosion and wear. Common coatings include zinc plating, galvanizing, and various types of paint or epoxy coatings. 6. Shot Blasting: This treatment involves shooting small metallic or abrasive particles at high speeds onto the surface of the steel round bars. Shot blasting can remove contaminants, scale, and rust, resulting in a clean and polished surface. It's important to note that the choice of treatment depends on the specific requirements of the steel round bars and the intended application. Consulting with experts or metallurgists is recommended to determine the most suitable treatment for a particular situation.

Q:Why can't the grounding device be replaced by steel bar instead of round steel?: Steel is known as hot rolled ribbed bar. Ordinary hot rolled steel bars are made up of HRB and the minimum yield point of the brand. H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words. Hot rolled ribbed bar is divided into two levels, HRB335 (old No. 20MnSi), three HRB400 (20MnSiV, 20MnSiNb, old No. 20Mnti), four grade HRB500 three grade.

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.

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