low price of round bar hot rolled

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Specifications

Hot rolled round bar
1)Sizes:10mm-600mm
2)Lengths:4m-9m,other lengths can be customised
3)Standard:GB

Product Description

 

Hot rolled steel bar /alloy steel bar

Specification:

OD

Length

Material

Standard

Technique

16-260mm

6-12m or aques per request

20#

GB ASTM DIN

Hot rolled

16-350mm

45#

200-500mm

45#

Forged

20-250mm

20Cr,40Cr,20-42CrMo

Hot rolled

50-300mm

GCr15

Chemical component:


C

Mn

Si

P

S

Cr

Ni

Cu

0.18-0.24

0.50-0.80

0.17-0.37

0.035

0.035

0.70-1.00

0.030

0.030



Application:


30Cr round steel bar is mostly used in carburized parts(oil quenching), such as: transmission gear, gear shaft, CAM, worm, piston pin, claw clutch, etc.


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Q:What is the tensile strength of round steel bars of diameter 28?
The tensile strength of round steel bars of diameter 28 is 27079.36~33849.2 kg. It is explained as follows: the material of rebar is generally Q235-A carbon structural steel, its yield strength is 235 MPa, tensile strength is 441~550 MPa, and it is 44~55 kg / mm2. The cross-sectional area of 28 mm in diameter is about 615.44 mm2, and its tensile strength is about 27079.36~33849.2 kg.
Q:What's the difference between bar and round bar?
If it is used for machining parts, it can be used in general. However, there are six bar material, and in general circumstances are not fixed feet, and round steel is generally sold according to the length of fixed length
Q:How about the difference between round steel and shaped steel? Where are they mainly used?
Low carbon steel structure steel Q235, Q345 rolled out section is I-shaped, C shape, L shape, flat strip, plate shape... Etc.... Called into "type", as used in steel structure component.
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:What is the reason that the diameter 130-45 round steel will break after welding?
Steel No. 45 belongs to medium carbon steel. Because of its high carbon content, it has poor weldability, but its comprehensive property is good. If welding is needed, it needs to be preheated before welding and heat treated after welding to reduce its internal stress. The more commonly used weldability is No. 20 steel. In order to improve the performance of No. 20 steel, heat treatment is usually applied to its surface.
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:12 of the diameter of the round steel can be M12 out of the thread is not
It depends on your material straight straight, generally should be right, you check the metric thread specification table, there is large size can be much, I think you are a little round a little better, so that you may get the car, do not appear to have a side material shortage phenomenon
Q:Why can't the grounding device be replaced by steel bar instead of round steel?
When using the steel structure as the ground, and hidden in concrete ground, in addition to the local connection is not what you said most of the other for round steel, screw steel, is the existence of these 1 steel, is more curved surfaces, easy to discharge. 2, the thread steel belongs to high carbon steel, conductivity is inferior to round steel." The problem? Then the building, simply all alone round or flat! Don't get it, do more beneficial and carp, social progress! Therefore, it is a mistake to use the steel bar instead of round steel to join the bar
Q:Why is the round bar bent?
In fact, the stress and deformation complex around reinforced concrete, bond stress varies with grip length of the rebar so bond strength with steel type, shape and position of the embedded in concrete, different direction and change, is also related to concrete strength, concrete compressive strength the higher the strength, the bond strength is generally determined by R=P/3.14dL. P for pullout force, D, rebar diameter, L, steel embedment length.
Q:Special steel bar steel products used to do what
But the red hardness difference of this kind of steel, that is, when the working temperature is greater than 250 degrees, the hardness and wear resistance of steel will decline rapidly, and lose their ability to work. In addition, carbon tool steels, such as those made of larger parts, are difficult to harden and easy to produce

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