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:How do you calculate the fatigue strength of a steel round bar?: To calculate the fatigue strength of a steel round bar, you typically conduct a fatigue test, also known as a fatigue life assessment. This involves subjecting the round bar to repeated loading cycles, with varying stress levels, until it fails. The number of cycles the bar can withstand before failure is the fatigue strength. This test helps determine the endurance limit or fatigue limit of the steel round bar, which represents the maximum stress level that the bar can endure indefinitely without failure.

Q:What is the difference between the heat treatment of cold drawn round steel and the heat treatment of wrought round steel?: Normalizing: heating steel or steel parts to the critical point, AC3 or ACM above the appropriate temperature, after a certain period of time in the air cooling, pearlite structure of the heat treatment process.

Q:What are the advantages of using boron-alloy steel round bars?: The advantages of using boron-alloy steel round bars include increased strength, improved hardness and wear resistance, enhanced toughness, and better heat resistance. Boron-alloy steel round bars also have excellent machinability and can withstand high temperatures without losing their structural integrity. Additionally, these bars offer cost savings due to their longer service life and reduced maintenance requirements.

Q:How is the copper wire and galvanized round steel connected during the construction of the lightning protection device?: Grounding device is an important component of lightning protection device. The earthing device releases the lightning current to the earth, and limits the lightning protection device to the ground voltage not too high. In addition to the independent lightning rod, the grounding device can be shared with other grounding devices on the premise that the grounding resistance meets the requirements.

Q:Which is stronger, steel pipe or round steel? Which is good at bending?: Of resistance to shearing, of course, of high round steel, generally used with steel tubes (light weight and material saving) for transmitting torque

Q:How do you determine the hardness of a steel round bar?: There are various methods available to determine the hardness of a steel round bar. One commonly used method is the Rockwell hardness test, where a minor load is applied to the bar's surface using a diamond or hardened steel ball, followed by a major load. The depths of penetration for both loads are measured, and the hardness value is determined based on the difference between these depths. Another method is the Brinell hardness test, which involves indenting the steel bar's surface using a hardened steel ball under a specific load. The resulting indentation's diameter is measured, and the hardness value is calculated based on the load and indentation diameter. Alternatively, the Vickers hardness test can also be utilized. This test employs a diamond pyramid-shaped indenter applied to the steel bar's surface under a specific load. The size of the indentation is measured, and the hardness value is determined based on the load and indentation's surface area. It's important to consider that the choice of method depends on factors such as the steel type and desired accuracy of the measurement. Moreover, other factors like heat treatment and composition can impact the steel bar's hardness, so they should be taken into account during hardness determination.

Q:Is HRB335 round steel or rib steel?: HRB335 is the hot rolled ribbed steel, two steel.This is the representation of the mechanical grade and dimension of threaded steel.

Q:Can steel round bars be used for making springs or suspension components?: Certainly, springs or suspension components can be crafted using steel round bars. Steel is extensively employed in such cases owing to its exceptional strength, longevity, and capacity to bear substantial loads. The circular form of these bars facilitates their effortless transformation into diverse spring structures or suspension components. Moreover, steel can undergo heat treatment to enhance its elasticity and resistance against fatigue, both of which are crucial attributes for springs and suspension systems. On the whole, steel round bars present a dependable choice for the production of springs and suspension components that can endure the rigors of these applications.

Q:What are the different tolerances for steel round bars?: There are various tolerances for steel round bars, depending on the specific requirements and standards set by different industries and applications. These tolerances ensure that the dimensions and surface conditions of the steel round bars meet the desired specifications. The most common tolerance for steel round bars is the diameter tolerance. This refers to the allowable deviation from the specified diameter. For example, a steel round bar with a diameter tolerance of +/- 0.005 inches means that the actual diameter of the bar can vary within this range. Another important tolerance for steel round bars is the straightness tolerance. This refers to the allowable deviation from a straight line over a specified length of the bar. Straightness tolerances are usually given in terms of the maximum deviation in relation to the length, such as 0.010 inches per foot. Surface finish tolerance is also crucial for steel round bars. It refers to the acceptable variation in the surface texture or roughness of the bar. This tolerance is often specified using parameters such as Ra (average roughness) or Rz (maximum roughness depth). For example, a surface finish tolerance of Ra 0.8 micrometers means that the average roughness of the bar's surface should not exceed this value. In addition to these common tolerances, there may be other specific tolerances based on the intended application of the steel round bars. These can include tolerances for straightness, length, weight, or other dimensional properties. It is important to note that the tolerances for steel round bars can vary depending on the standards followed by different industries and countries. It is always recommended to refer to the relevant standards or specifications to determine the specific tolerances required for a particular application.

Q:What is the difference between a peeled and a polished steel round bar?: A peeled steel round bar is a bar that has had its outer layer or skin removed through a peeling process, resulting in a smooth surface. On the other hand, a polished steel round bar undergoes a polishing process to enhance its appearance and create a reflective, shiny surface. While both bars have a smooth finish, the peeled bar focuses on removing imperfections and enhancing the structural integrity, whereas the polished bar prioritizes aesthetics and visual appeal.

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