High Quality Steel Round Bar Q235, A36, SS400

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Loading Port:
Lianyungang
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
200000 m.t./month

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Product Description:

Specifications of High Quality Steel Round Bar Q235, A36, SS400

1. Grade: GB, JIS, ASTM, EN

2. Grade: Q235, SS400, A36, S235JR

3. Diameter and mass: As below

Diameter

Mass

Diameter

Mass

Diameter

Mass

(mm)

(kg/m)

(mm)

(kg/m)

(mm)

(kg/m)

6

0.22

22

2.98

53

17.30

7

0.30

24

3.55

56

19.30

8

0.40

25

3.85

60

22.20

9

0.50

26

4.17

63

24.50

10

0.62

28

4.83

65

26.00

11

0.75

30

5.55

70

30.20

12

0.89

32

6.31

75

34.70

13

1.04

34

7.13

80

39.50

14

1.21

36

7.99

85

44.50

15

1.39

38

8.90

90

49.90

16

1.58

40

9.86

95

55.60

17

1.78

42

10.90

100

61.70

18

2.00

45

12.50

120

88.85

19

2.23

48

14.20

140

120.93

20

2.47

50

15.40

150

138.82

4. Material: Mild Steel

5. Heat treatment of high quality steel:

Fire: Isothermal annealing temperature is 800 ~ 880 °C, with 10 ~ 20 °C, the furnace cooling to about 600 °C, hardness above HB269.

Preheat temperature: 730-730 °C

Quenching temperature: 1190-1210 °C

Tempering temperature: 540-595 °C

Cold drawn, hardness 285 HBS

Cold drawn after annealing condition, hardness 277 HBS

Quenching methods: oil quenching, air cooling or salt bath quenching

Usage and Applications of High Quality Steel Round Bar Q235, A36, SS400

1) Suitable for making various strong cutting tool abrasion resistance, impact resistance.

2) Used to produce all kinds of high hard and super hard saw blade, drill, tap, broach, gear hob and various kinds of milling cutter.

3) Used for advanced punching die, screw die, and the toughness and complicated shape of the punch, etc.

4) Is used for cold forging die and drawing mode, etc.

5) Recommended watchcase factory, screw factory and other cold stamping products industry use.

Packaging & Delivery of High Quality Steel Round Bar Q235, A36, SS400

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

Production Flow of High Quality Steel Round Bar Q235, A36, SS400

The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process. The main measures process is high temperature solution and refinement cycle. High temperature solution can improve the carbide morphology and particle size. The aim is to make the loop refinement ultrafine austenite grains.


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Q:Difference between forging and round steel
The castings need to be uniform in each piece without any porosity, excess space, inclusions, or other defects. The component produced by this method has a high ratio of strength to weight. These elements are usually used in aircraft structures.
Q:What is round steel?
Round steel is a solid strip of steel whose cross section is round. Its specifications are expressed as millimeters in diameter. For example, "50" means a round steel with a diameter of 50 millimetersRound bar is divided into three kinds of hot rolling, forging and cold drawing. The specification of hot rolled round bar is 5.5-250 millimeters. Among them, 5.5-25 rounds of small round bars are mostly supplied by straight strips. They are commonly used as reinforcing bars, bolts and various mechanical parts;
Q:40CrMo what is the round steel material?
Requirements for the manufacture of 35CrMo steel with higher strength and conditioning section large forgings, such as locomotive traction gears, with supercharger drive gear, the rear axle, the connecting rod and the spring load greatly clip, 2000m can also be used for the following deep oil drill pipe joints and fishing tools etc..
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:What are the main differences between wrought round steel, hot rolled round steel and cold drawn round steel? Where are they used separately?
Cold drawn round steel (don't know, you mean can not cold dial round bar). But I understand by the cold dial round bar Also mainly used in hardware parts processing and production. Such as hinge shaft core or other surface and diameter requirements of production and processing occasions.
Q:What are the scientific names of round bar and screw steel?
Round steel and thread steel are just popular terms for steel reinforcement in construction. In the construction, steel by HPB235, belonging to the carbon steel, steel is Q235; steel by HRBxxx, the steel is the most commonly used HRB335 and HRB400, they are called hot rolled alloy steel, cold steel lines, is heat treated in a bar.
Q:Is HRB335 round steel or rib steel?
H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words.The numbers behind HRB represent the mechanical properties of the material they produce. The specific value is the yield strength of the material, sigma S (or Sigma P0.2). HRB335, indicating rebar with a yield strength of 335MPa.
Q:What kind of nuts do you need for round 20 rounds?
The M22 thread can be made, if made M20, need a car off some. You may be talking about support, depending on how big your lead screw is.Stainless steel round bar refers to the solid steel strip with round section. The specifications are expressed in millimeters of diameter, such as "50", which means a stainless steel round bar of 50 millimeters in diameter.
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:Do you need paint for roof lightning proof steel bars?
If the metal surface is coated with a thick layer of insulating paint, it will seriously affect the flashover effect. In the national standard, the metal roof is directly used as a flash receiver. The thickness of the paint used on the roof must be less than the required value. That is what it means.

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