42CrMO Forged or Hot Rolled Sae 4140 Steel Round Bars

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Min Order Qty:
332 m.t.
Supply Capability:
2000000 m.t./month

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Description of steel round bar:

Mild Steel Round Bar is used for making security grills, screens, Construction and Machine Manufacture.Stainless steel bar is widely used in Architecture,Machine Manufacture,Power Station,Electric Equipment and Factory,Oil and Chemical Industry,Food and Medical Industry,City Decoration Industry

Festures of steel round bar:

Length: standard 6m,9m,12m, or as customers' requirement

Surface: Black, polished, grinded, ,Bright, Turn smooth(Peeled),Brush,Mill,Pickled

Process:Hot rolled,cold drawn,forged

Packing: In bundle, tied by steel straps, covered with protecting film

Use wooden box, fill with foam to keep the surface from damaging

Specifications of steel round bar:

Description : Steel Bar/Stainless Steel Round Bar/Alloy Steel Round Bar/Carbon Steel Bar

Stainless Steel Bright Bar/Stainless Steel Peeled Bar/Stainless Steel Polishing Bar


1 Hot rolled round bar diameter from 5.5mm to 110mm

2.Hot forged round bar diameter  from 110mm to 400mm

3.Cold drawn round bar diameter from 2.0mm to 60mm

4.Grinding bar diameter from 4.0mm to 40mm

5.Turn smooth diameter from 40mm to 250mm

Images of steel round bar:

42CrMO Forged or Hot Rolled Sae 4140 Steel Round Bars


1. What is your main market?

We mainly export to Asia such as Japan,Korea,Thailand and North America and Middle East.

2. How long is the lead time?

Delivery time: 45 days after order confirmed.

3. What  payment term do you accept?

Payment: T/T or L/C at sight.

4.Why do you choose to cooperate with us?

We have over10 years experience in this business so we are able to provide you the high quality products with the best price.

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Q:Excuse me, the difference between round steel, screw steel, steel, plate material, steel wire, hope professional answer?
Anything you say can be called steel bar, except steel wire. Round and round is a name, and wire coil, general line.
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 round steel round steel?
The difference between steel and other steel: 1 is not the same, round shape light round, no pattern without ribs, other steel surface appearance is engraved or ribbed, cohesive force that cause steel and concrete, and the bond strength of steel and concrete in the other. 2 ingredients are different, round steel (grade a steel) belongs to ordinary low carbon steel, and other steel bars are mostly alloy steel. 3 strength, steel and other steel with high strength low strength, namely, diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, and it reinforced the deformation the break before the much smaller
Q:4145H round steel is equivalent to the domestic brand?
4145H is round steel, oil drilling steel, domestic steel, Xingcheng Special Steel, steel and other steel mills have production in the Great Wall. The industry commonly used 42CrMo instead.
Q:Excuse me and steel disc round what is the difference?
Steel wire and round steel are two different materials.
Q:Are lightning checks required for galvanized steel, flat steel and round steel?
When you buy hot galvanized round steel and flat steel, please provide inspection documents. In addition, in the procurement of materials must be explained that hot galvanizing, or else the business to provide you with cold plating will not work; there is a certain price gap between the two.
Q:Which is stronger, steel pipe or round steel? Which is good at bending?
The strength of the steel pipe is slightly lower, but its weight is light, so as long as the wall thickness is reasonable, the experienced designer uses steel pipe instead of round steel.Like me, that's it
Q:Lightning protection earthing zinc plating flat iron and round steel welding method, need to flat iron wrapped in round steel outside welding?
The flat steel is not required to be wrapped outside the round bar, and the round steel can be directly welded on the flat steel, and the welding joint area can not be smaller than round steel or flat steel, and the section is a cross section
Q:How many grades of steel are round steel?
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. It is divided into three kinds: hot rolling, forging and cold drawing. There is no classification of steel. However, high quality finished steel must be in the form of round steel, otherwise it is called ingot or billet and section steel.

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