Steel Round Bar Reliable Manufacturers from China

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
554 m.t.
Supply Capability:
2000000 m.t./month

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Product Description:

Description of steel round bar:

1. Commodity: Round steel bar 

3. Technical: Hot rolling 
2. Length: Min. 5.8meter, according to requirement.
3. Diameter: 16mm-250mm


Festures of steel round bar:

1.Dia 80-800mm Length:2000-13000mm or as required 
2.Technique:Forged 
3.Delivery Time:45 days 

 

Specifications of steel round bar:

1. Standards:  AISI 4340 8620 8640 4320 , JIS SNCM8  GB:40CrNiMoA 

2. Specification: Dia: 80~450mm  Length:2000-13000mm or as required

The highest temperature is 427 degrees Celsius.it has good strength,and high quenching property ,the toughness is good and small deformation during quenching.At high temperature.

C

Si

Mn

S

P

Cr

Ni

Cu

Mo

0.37-0.44

0.17-0.37

0.40-0.80

0.025(max)

0.025(max)

0.60-0.90

1.25-1.65

0.025(max)

0.15-0.25

 

Images of steel round bar:

Steel Round Bar Reliable Manufacturers from China

FAQ:                                               

1. What is your package?

Packing situation: standard seaworthy packing or as customer required.

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.

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Q:What is the diameter deviation of 12 mm galvanized round bar?
It is widely used in hardware, building, automobile, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace and other architectural decoration. The most extensive machining of general machine parts, general rod type steel parts, CD pole, bolt, nut.
Q:What is the difference between the heat treatment of cold drawn round steel and the heat treatment of wrought round steel?
Annealing: the annealing of hypoeutectoid steel workpiece heated to AC3 above 20 - 40 degrees heat after a period of time, furnace cooling (or buried in the sand or lime cooling) to 500 degrees Celsius in air cooling heat treatment process.
Q:Why is it better to use round steel than flat steel in lightning protection?
Of course, the contact area of flat steel and soil are large, relatively scattered large flow area, the construction is more convenient, in terms of price, we are willing to use flat, as for the problem of anti-corrosion, anti-corrosion paint, zinc can be taken, you know, the thickness of galvanized steel pipe is generally not flat, so true to see the term for the use of galvanized flat steel is not bad.
Q:The difference between galvanized round bar and galvanized flat steel?
Galvanized round bar and galvanized flat steel are of different shapes and different uses.
Q:What is the difference between common wire and high-speed wire?
P line: refers to the use of "ordinary mill (usually open-train double wire rod rolling mill)". The rolling speed of 20-60 meters per second, per root weight (disc) in 0.4-0.6 tons (market show is generally three root six head is a market), in the rolling process can only be cooled by air cooling or air cooling line to ensure product performance.
Q:Are the bolts for the round bar or round steel?
The template is generally used round bar, two ends of the wire, wear the backing plate after the nut.
Q:Requirements for groove welding of grade 22mm round steel and manual arc welding
On the lathe, the car C9 chamfer (the car is sharp and difficult to weld, the car's chamfer is too small, the root is not welded).When welding, pull apart the gap of 2mm above the root clearance, the condition allows the edge to rotate while welding, otherwise it can only be welded in all positions.
Q:The difference between round steel and screw steel
The difference between round bar and round bar is that the surface has longitudinal ribs and transverse ribs, usually with two longitudinal ribs and transverse ribs uniformly distributed along the length direction. The rebar is a kind of small section steel, mainly used for the skeleton of reinforced concrete construction members. In use, some mechanical strength, bending deformation property and welding performance are required. The raw steel billet for the production of threaded steel is carbon structural steel or low alloy structural steel which is treated by calm melting, and the finished steel bar is delivered in hot rolling forming, normalizing or hot rolling state.
Q:The diameter of 20 solid round steel bend into a circle, what machine bending?
Worm and worm type steel bar benderStructure: worm and worm type steel bending machine, mainly each family, motor, transmission system, work mechanism (work disk, insert seat, gripper, shaft, etc.) and control system. A walking wheel is arranged under the frame for easy movement.Working principle: the power of the motor is rotated by the V belt pulley, the two straight gear and the worm gear rod, and then drives the working disk to rotate. The working disk usually has 9 shafts, the center hole is used to insert the central shaft, and the 8 hole seats around each have 6 holes, which are used to insert the retaining shaft. In order to move the reinforcing steel bar, two times of each work table is also provided with a feeding roller. When working, according to the bending shape of the steel bar, the square of the reinforcing steel bar is arranged between the central axis of the work disc and the corresponding forming shaft, and the inner side of the iron block is blocked. When the working disc is rotated, one end of the reinforcing bar is prevented from rotating by the iron blocking shaft, the central shaft position is fixed, and the forming shaft is rotated in an arc direction around the central shaft, and the reinforcing bar is bent.As a result of the specification, the bending diameter of the steel bar shall be no less than 2.5 times of the diameter of the steel bar when it is taken as a 180 degree bending hook. Therefore, the center shaft is also made into 16~100mm in 9 different specifications to meet the requirements of bending different diameter steel bars.
Q:Is yuan 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.

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