Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 1

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 2

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 3

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 4

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H

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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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Grade	C	Si	Mn	S	P	Cr	B
55Si7	0.42-0.60	1.50-2.00	0.60-0.90	Max 0.030	Max 0.030		0.0008-0.0030
60Si7	0.57-0.64	1.50-2.00	0.60-0.90	Max 0.030	Max 0.030		0.0008-0.0030
60SiCr7	0.56-0.64	1.60-2.00	0.70-1.00	Max 0.025	Max 0.025	0.20-0.40
55Cr3	0.52-0.59	Max 0.40	0.70-1.00	Max 0.025	Max 0.025	0.70-1.00

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: How do steel round bars differ from other types of steel bars?: Steel round bars differ from other types of steel bars primarily in their shape and versatility. Unlike other steel bars such as square or flat bars, steel round bars are cylindrical in shape and have a circular cross-section. This unique shape allows for greater flexibility and adaptability in their usage. One of the main advantages of steel round bars is their ability to withstand high levels of stress and pressure. Due to their circular shape, they distribute weight and pressure evenly, making them ideal for applications that require durability and strength. These bars are often used in construction, manufacturing, and engineering projects where structural integrity is crucial. Another key difference is the ease with which steel round bars can be machined and manipulated. Their cylindrical shape allows for easy drilling, cutting, and shaping, making them highly versatile and suitable for a wide range of applications. They can be easily welded, bent, or formed into various shapes, giving them an advantage over other types of steel bars in terms of customization. In terms of appearance, steel round bars also have a distinct visual appeal. The smooth and cylindrical surface of these bars offers a sleek and polished look, making them aesthetically pleasing in architectural and decorative applications. Overall, steel round bars stand out from other types of steel bars due to their shape, versatility, and strength. Their ability to withstand high levels of stress, ease of machining, and appealing appearance make them a popular choice in various industries.

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, sulfur, and phosphorus. Carbon is the most important alloying element and is responsible for the strength and hardness of the steel. It enhances the overall performance and makes the steel more durable and resistant to wear and tear. Manganese is another crucial element that improves the hardenability and strength of the steel. It also helps in reducing the brittleness and increasing the toughness of the material. Silicon is added to enhance the steel's resistance to oxidation, while sulfur and phosphorus are added in small amounts to improve machinability. These alloying elements work together to create steel round bars with specific properties suitable for various applications in industries such as construction, automotive, and manufacturing.

Q: Are steel round bars resistant to fire?: Yes, steel round bars are highly resistant to fire. Steel is a non-combustible material and has a high melting point, making it suitable for use in high-temperature environments.

Q: Can steel round bars be used for making fuel system components?: Fuel system components can indeed be made using steel round bars. Steel is widely employed in the production of various fuel system components because it possesses strength, durability, and corrosion resistance. Steel round bars are capable of being machined, welded, and shaped into diverse forms and dimensions, rendering them suitable for a broad array of fuel system applications. Moreover, steel's elevated melting point and its capacity to withstand high pressure and temperature conditions make it a dependable option for fuel system components that are exposed to extreme circumstances.

Q: Can steel round bars be used in the telecommunications industry?: Yes, steel round bars can be used in the telecommunications industry. Steel round bars are commonly used to provide structural support for various telecommunications equipment such as antennas, satellite dishes, and communication towers. These bars are highly durable and can withstand harsh weather conditions, making them suitable for outdoor installations. Additionally, steel round bars can be easily fabricated and shaped to meet specific design requirements, allowing for the integration of various components in the telecommunications infrastructure.

Q: Can steel round bars be used for making transmission towers?: Certainly, transmission towers can be constructed using steel round bars. The construction industry frequently utilizes steel round bars owing to their robustness, longevity, and adaptability. Transmission towers necessitate materials capable of enduring harsh weather conditions, accommodating hefty loads, and ensuring structural steadiness. Steel round bars effectively fulfill these criteria, rendering them a fitting option for erecting transmission towers. Moreover, steel round bars can be effortlessly fabricated and welded, permitting the swift and efficient construction and installation of transmission towers.

Q: What is the difference between a hot-finished and a cold-finished steel round bar?: The manufacturing process and resulting physical properties distinguish hot-finished and cold-finished steel round bars. Hot-finished bars are made by subjecting the steel to high temperatures in a furnace, followed by rolling processes. This method allows for greater malleability, making it easier to shape the steel to its desired dimensions. Consequently, hot-finished bars often have a rougher surface and may exhibit imperfections such as scaling and decarburization. Nonetheless, the high-temperature process enhances the steel's mechanical properties, including tensile and yield strength, making it suitable for applications requiring greater strength and durability. Conversely, cold-finished bars undergo a distinct manufacturing process. They are formed by cold rolling the steel at room temperature, resulting in a smoother surface finish and tighter dimensional tolerances compared to hot-finished bars. The absence of high temperatures eliminates scaling and decarburization, yielding a more uniform and cleaner appearance. Although cold-finished bars may have slightly lower tensile and yield strength than their hot-finished counterparts, they offer improved dimensional accuracy and a smoother surface, making them ideal for precision machining or applications that prioritize aesthetics. To summarize, the disparities between hot-finished and cold-finished steel round bars lie in the manufacturing process, surface finish, dimensional accuracy, and mechanical properties. Hot-finished bars provide greater strength and suit applications that prioritize durability, whereas cold-finished bars offer superior surface finish and dimensional accuracy, making them ideal for precision machining or applications where aesthetics are crucial.

Q: What is the difference between a turned and a polished steel round bar?: A turned steel round bar and a polished steel round bar both undergo separate processes that result in different surface finishes and properties. A turned steel round bar is typically created by using a lathe machine to remove material from the surface of a steel bar. This process involves rotating the bar against a cutting tool, which cuts away the outer layer and leaves behind a smooth and cylindrical surface. The turned bar may have visible machining marks due to the cutting process, although it is generally considered to have a more precise and uniform diameter compared to other types of steel bars. Turned bars are often used in applications where dimensional accuracy is crucial, such as in machinery or tooling. On the other hand, a polished steel round bar undergoes a different process that involves grinding or buffing the surface to achieve a smooth and reflective finish. Polishing removes any imperfections or roughness from the surface of the steel bar, resulting in a highly lustrous appearance. Polished bars are often used in decorative applications or where visual aesthetics are important, such as in architectural designs or high-end consumer products. In summary, the main difference between a turned and a polished steel round bar lies in their respective manufacturing processes and resulting surface finishes. A turned bar is machined to achieve precise dimensions, while a polished bar is subjected to a polishing process to obtain a smooth and reflective surface. The choice between the two depends on the specific requirements of the application, with turned bars being preferred for dimensional accuracy and polished bars for aesthetic appeal.

Q: Can steel round bars be used for making interior components?: Yes, steel round bars can be used for making interior components. Steel is a durable and versatile material that can be shaped and formed into various designs and structures. Round bars are particularly suitable for creating interior components such as handrails, staircases, furniture frames, and decorative elements. They provide strength, stability, and an aesthetic appeal to interior spaces. Additionally, steel round bars can be easily welded, bent, or cut to meet specific design requirements, making them an ideal choice for custom-made interior components.

Q: Are more bars used in high-rise buildings?: Look at the architectural design requirements and seismic grade, light steel reinforcement is mainly stirrups, columns, beams, shear walls generally use thread steel, plate bars and distribution bars are generally cold and twisted steel bars

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