S45C Grade Steel Round Bar for Machine Structural Use

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100 m.t.
Supply Capability:
500000 m.t./month

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Item specifice:

Standard: AISI,JIS,GB,BS,DIN,API,EN,ASTM Technique: Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring Shape: U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ
Surface Treatment: Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated Steel Grade: Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B) Certification: ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Thickness: 16mm-360mm Length: 6m Net Weight: 2mt

Product Description:

S45C Grade Steel Round Bar for Machine Structural Use


Product Description of S45C Grade Steel Round Bar for Machine Structural Use

1. Steel grade: SAE1045, 45#, C45, S45C

2. Length: 6M-12M
3. Diameter: 16mm-300mm

4. Product range: round bar, flat bar, square bar

5. Technique: Hot rolled, forged, cold drawn


Specification of S45C Grade Steel Round Bar for Machine Structural Use





EAF + LF + VD + Forged + Heat Treatment (optional)

Length (mm)   

Max 12m

Heat treatment

Normalized / Annealed / Quenched / tempered

Flat bar



Delivery condition

Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)




Ultrasonic test according to SEP 1921-84 D/d

Length (mm)   

Max 12m


Chemical Composition of S45C Grade Steel Round Bar for Machine Structural Use














Photo Show of S45C Grade Steel Round Bar for Machine Structural Use

S45C Grade Steel Round Bar for Machine Structural Use

Packing and Delivery:

Packing in bundle package, or as customer's requirements.

Delivery Detail: 45 days after receiving the deposit.


Usage and Applications of S45C Grade Steel Round Bar for Machine Structural Use

1. Steel round bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.

2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.

3. Some special material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.

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.

Astm 615 Bs4449 B500B Deformed Steel RebarsAstm 615 Bs4449 B500B Deformed Steel Rebars 



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

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      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.

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Q:What is the difference between 40Cr round steel and 40Cr forging parts?
The utility model has the advantages of high strength and good plasticity, and is suitable for making important parts with large force and high requirement.The properties of forgings are superior to those of ordinary ones.
Q:The diameter of 20 solid round steel bend into a circle, what machine bending?
Or a bar bending machine machine, the installation of a 20cm diameter on the rotating die on the line, available 20mm manual welding steel die making.
Q:What is the difference between strip steel and round steel? Where are they mainly used?
Strip steel is a kind of narrow and long steel plate produced by various rolling mills to meet the needs of industrial production of various metal or mechanical products in different industrial sectors. Strip steel, also known as steel strip, is within 1300mm in width, and the length varies slightly according to the size of each roll. The strip is supplied in general, and has the advantages of high dimensional accuracy, good surface quality, easy processing and material saving. Same as steel plate, strip steel is divided into two kinds of ordinary strip steel and high quality strip steel according to the material used, and two kinds of hot-rolled strip steel and cold rolled strip steel according to processing method.Strip steel is widely used in the production of welded steel pipe, made of cold formed steel billet, manufacturing bicycle frame, rim, clamp, gasket, spring, saw blades, hardware and blades.
Q:How many positive and negative tolerances are allowed for round steel GB?
Because of the deviation of cold rolled steel plate and hot rolled steel plate is not the same as the.5mm hot rolling strip is usually made of steel plate shear, the thickness deviation according to the different width and different. But the minimum of plus or minus 0.19, the highest of plus or minus 0.29 this standard applies to the diameter of 5.5mm ~ 250mm hot rolled round and length of hot-rolled square steel 5.5mm ~ 200mm.
Q:The difference between galvanized round bar and galvanized flat steel?
Round steel (grade 1 steel) belongs to ordinary low carbon steel with low strength. However, the plasticity of the round bar is stronger, that is, the round steel has a larger deformation before it is pulled off.It has been widely used in the fields of hardware, construction, automobile, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, space, etc.. The most extensive machining of general machine parts, general rod type steel parts, CD pole, bolt, nut.Refers to the galvanized flat steel width 12-300mm, thickness 4-60mm, cross section is rectangular and with pure edge of galvanized steel. Galvanized flat steel can be finished steel, also can be galvanized pipe blank and galvanized belt. With high strength, light structure: strong grid welding structure, so that it has high load, light structure, easy lifting and other features, beautiful appearance, durable.
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:What kind of steel is used for anchor bolt material? What's the quality of anchor bolt material?
The general anchor bolt is made of Q235 steel, which is round. Rebar (Q345) strength, do nut thread no light round easily.
Q:What kind of nuts do you need for round 20 rounds?
The nut is connected to mechanical equipment parts, through the inside of the thread, the same specifications of nuts and bolts to connect together, such as M4-P0.7 and M4-P0.7 only bolt nut series connection (nut, M4 nut diameter is about 4mm, 0.7 fingers between the two thread distance of 0.7mm); US made products as well, such as screw nut only with the 1/4-20 1/4-20's collocation (1/4 refers to the nut inner diameter is about 0.25 inches, 20 inches each, 20 teeth).Self locking nut, lock nut, locking nut, four claw nut, the nut is screwed into the nut, screw rod nut insurance connecting nut cap nut six self-locking angle of anchor bolt with nut, six special angle crown thin nut eyenut.
Q:Why is the round bar bent?
Gripping force: generally expressed by the strength of the concrete.Physical quantity of reinforced concrete to resist sliding ability, its sliding force divided by the holding area to express (Mpa), under normal circumstances, the bond strength is along the steel and concrete interface shear stress, which is the bond stress.
Q:1, three, two, steel, wire rod, round steel what is the difference?
Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Among them, 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets.

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