High Quality GB Standard Steel Square Bar 21mm-25mm

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t
Supply Capability:
10000 m.t/month

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Product Description:

Product Description:

-Standard: GB,

-Grade: Q195 or equivalent.

-Chemical Composition:

Standard

Grade

Element (%)

GB

Q195

C

Mn

S

P

Si

0.06~0.12

0.25~0.50

≤0.050

≤0.045

≤0.30

 

 

Measures of HR Square Bar (small measures):

 

HR Square Bar.

(Section of HR Square Bar)

 

-Length of a side and Theoretical weight of Square Bar.

Length of a side(mm)

Theoretical weight(kg/m)

Length of a side(mm)

Theoretical weight(kg/m)

7

0.385

22

3.80

8

0.502

24

4.52

9

0.636

25

4.91

10

0.785

26

5.30

11

0.950

28

6.15

12

1.13

30

7.06

13

1.33

32

8.04

14

1.54

34

9.07

15

1.77

36

10.17

16

2.01

38

11.24

17

2.27

40

12.56

18

2.54

42

13.85

19

2.82

45

15.90

20

3.14

48

18.09

21

3.46

50

19.63

Notes:

1, The theoretical weights in the list, base on the density of 7.85 g/cm3.

2, Formula for theoretical weight of Square bar: (length of a side)2 * 0.00785

3, The numbers with *mean that they are not regular or we don’t offer them.

 

 

-Regular length of Square Bar:

Steel

Length of a side (mm)

Length of steel (m)

Normal steel

< 25

4~10

> 25

3~9

Steel of high quality

All measure

2~6

Tool steel >75

1~6

 

 

Usage/Applications of HR Square Bar:

-The Square Bar is normally used as structure steel.

-Row material for other structure steel like steel angles, channels, I-beams, H-beams, etc…

 

Packaging & Delivery of HR Square Bar:

-Packing Detail: The products can be packed in bundles by steel wires.

-Marks: We make tag marks and color marks. The tag marks with white background and red company logo will be tied up to each bundle of the products. The information is usually including basic information of products and company and other information requested by customers. As for color marks, we will paint both ends of bundles to make sure that it will be more convenient for customers to distinguish them from other products.

-Delivery Detail: 30~45 working days after receive buyer’s T.T. or L/C.

 

Transportation:

-The products can be delivered by bulk vessel or by container. As for container, products with the length of 6m will be loaded in 20’ container, with 9m or 12m, in 40’ container.

-The maximum quantity of loading of container is 25 tons.

-The products are usually transported to the nearest port from the production place.

 

Send a message to us:

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Q:How to hollow square steel welding
Because the hollow steel thin wall, the use of electric welding should be used for small diameter with 2.5 electrodes, current should not be too large, can be around 100.
Q:100*100*2.5 square with 20 square meters of housing security light steel structure:
What is the covering frame above, how much weight is the use of PC plates or laminated glass or three layer hollow glass, covering the different weight of great disparity, has the distinction of frame grid size.
Q:Square steel and C steel which is better?
Then use the square. Beautiful C steel, general color steel is not used. See you square high-rise, is firmly with the 100 by 100.
Q:How to make the steel arc
The steel made arc:Solid steel:1, bending machine bend into arc2, flame cutting off arc baking3, bending machine coil windingHollow square:The hollow square filled with sand again by the method of solid steel bending arc.
Q:Building height is 5m, the main dry hanging stone square spacing value should be how much better?
Man, I specialize in this industry. You are not very clear, some data depends on how thick you use, what specifications of stone. More important is to see how large the main keel (channel or Fang Gang) you use, and how far the stone faces are separated from the structural surface.
Q:The steel structure material can do?
First of all, will cause the waste of steel using square large section case, increase the weight of the structure, which is contrary to the steel structure of light weight advantages, small cross section from the processing, production process, the use of steel will be more, in addition to the special requirements, do not recommend the use of square steel.
Q:The difference between galvanized square and galvanized steel
Hello, SECC is a hot-rolled or cold-rolled galvanized steel or galvanized sheet for the blank shape by the cold bending process after section steel pipe welded square hollow square cross-section shape and size of the high-frequency; galvanized square cold-formed steel hollow or well in advance of the hot dip galvanized after processed tube.Galvanized square steel: first the steel bar is solid. Different from the square pipe, hollow, belong to the pipe. The steel surface is galvanized, galvanized steel.
Q:The steel structure of 40*80 steel, it is tempered glass top. The steel internal fight foaming agent. But there is rust in the inner surface. Will it affect the safety? How to deal with
The rust removal on the inner wall of pipe profiles has always been a thorny problem. If the corrosion is not serious, the treatment is usually not done. If you want to anti-corrosion effect is good, but also to go inside the paint corrosion prevention practices, very few.
Q:As for steel structure steel, how appropriate
Column: 200*200*8 rectangular tube as column, beam (main beam) is 300*300*12, secondary beam is 150*150*8@1500 evenly distributed. Roof beam 150*150*8 herringbone roof truss.
Q:How much is the thick wall hollow square 30*30
Steel is an important material for national construction and the realization of the four modernization indispensable, wide application, wide variety, according to the different steel profile is generally divided into sections and plates, pipes and metal products four categories, in order to facilitate the organization of steel production, supply and improve order management, and divided into heavy rail, light rail, large steel, and steel, small steel, steel cold-formed steel, high-quality steel, wire rod, steel plate, steel sheet, electrical silicon steel sheet, strip steel, seamless steel pipe, welded steel pipe, steel, metal products and other varieties.

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