• Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars System 1
  • Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars System 2
  • Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars System 3
Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars

Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
40000 m.t./month

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Advantage of Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars

1.Prime quality 
2.Competitive price 
3.Professional service 
4.Prompt delivery & Seaworthy packing 
5.Mill Test Certificate

Specification of Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars


Material: Q235; A36; SS400; ST37; SAE1006/1008; S275JR; Q345,S355JR; 16Mn; ST52 etc.
thickness: 3-30mm, width 10-400mm, length 5-12M
Length: fixed length, random length

 

Application of Steel Flat Bar ISO and SGS Certificate Cold Rolled Flat Bars

Household Appliance

Refrigerator shutter &side panels, Rice Cooker, Washer, Microwave Ovens, Freezers, Air conditions, Water Heaters, Sterilization Cabinets, Range Hoods, Computer Panels , DVD/DVB panels, TV back panel etc.

Construction Material

Fireproof Door &Kitchen Cabinet ,Ceiling, Sanitary Unit, Elevator etc.

Transportation

Car, Ship, Trains, Aircraft Equipment. etc.

Education and Health Field

Electronic Writing Boards, Projection Screens, Clean Operating Rooms, etc.


A)Features of Stainless Steel Flat Bar:

 

a)     The appearance of cold-rolled products gloss is good, beautiful;

b)     Excellent high temperature strength;

c)     Excellent work-hardening (after processing weakly magnetic)

d)     Non-magnetic state solution.

 

B)Specifications of Stainless Steel Flat Bar:

 

1. Standard:  GB ASTM, JIS, etc.

 

2. Grade: 200,300,400series

 

3. Size: 3mm*19mm ~ 12mm*140mm

 

4. Thickness: from 3mm to 12mm

 

5. Width: from 19mm to 140mm

 

6. Shape Manufactured: flat bar

 

7. Length: 2-6m or as customers' request

 

8. Surface finish:  Black & Pickled & Bright

 

9. Manufacture technology: cold drawn/cold rolled/hot rolled

 

C) Product Photos  


Q:What does QB stand for in Q235B flat steel? What's the difference between Q235B and Q235A?
There are also some subtle differences between Q235A and Q235B:1, chemical composition: Q235A:C:0.14~0.22:Mn:0.30~0.65; S:0.050;2, mechanical properties: tensile test without distinction, impact test A do not do, Q235B I-beam, Q235B angle steel, Q235B channel steel, Q235BH steel, Q235B flat steel B do 20 degree impact test, V type impact power (longitudinal) J no less than 27.
Q:What are the different heat treatment processes for steel flat bars?
There are several heat treatment processes for steel flat bars, including annealing, quenching and tempering, normalizing, and hardening. Annealing involves heating the steel to a specific temperature and then slowly cooling it to improve its ductility and reduce internal stresses. Quenching and tempering involves heating the steel to a high temperature and then rapidly cooling it in a quenching medium to increase its hardness, followed by tempering to reduce brittleness. Normalizing is a heat treatment process similar to annealing, but with a faster cooling rate, to refine the grain structure and improve the steel's mechanical properties. Hardening is a process where the steel is heated to a high temperature and then rapidly cooled to increase its hardness and strength.
Q:What is the difference between hot-rolled and cold-rolled steel flat bars?
The production process and resulting characteristics distinguish hot-rolled steel flat bars from cold-rolled steel flat bars. Hot-rolled bars are created by heating a steel billet or slab to a high temperature and then rolling it through a series of rollers to achieve the desired shape and size. This results in a relatively rough surface and rounded edges. In contrast, cold-rolled bars are produced by cooling down the hot-rolled steel to room temperature and passing it through a series of rollers at room temperature. This process yields a smoother surface finish and sharper edges compared to hot-rolled bars. Regarding physical properties, hot-rolled bars generally have a larger size tolerance due to possible dimensional variations caused by the high-temperature rolling process. On the other hand, cold-rolled bars have a tighter size tolerance as a result of the controlled cold-rolling process. Furthermore, hot-rolled bars often have a scaled surface due to the heating and cooling process involved in their production. This scaled surface consists of a thin layer of iron oxide. In contrast, cold-rolled bars have a clean and smooth surface. Moreover, the mechanical properties of hot-rolled and cold-rolled bars differ. Hot-rolled bars tend to have lower yield strength and higher ductility, making them suitable for applications requiring shaping or bending. Conversely, cold-rolled bars have higher yield strength and lower ductility, making them more suitable for applications necessitating strength and durability. In summary, the primary differences between hot-rolled and cold-rolled steel flat bars lie in their production process, surface finish, dimensional tolerance, and mechanical properties. The choice between the two depends on the specific requirements of the application and the desired characteristics of the steel flat bars.
Q:How do you determine the corrosion resistance of a steel flat bar?
The corrosion resistance of a steel flat bar can be determined through various methods such as conducting corrosion tests, evaluating the composition and microstructure of the steel, and considering the environmental factors it will be exposed to.
Q:Can steel flat bars be used for making brackets or supports for industrial machinery?
Yes, steel flat bars can be used for making brackets or supports for industrial machinery. Steel flat bars are known for their strength, durability, and resistance to wear and tear, making them an ideal choice for providing structural support and stability to industrial machinery. Additionally, steel flat bars can be easily fabricated, welded, and customized to meet the specific requirements of different machinery, making them a versatile option for constructing brackets and supports.
Q:Are steel flat bars easy to work with?
Steel flat bars are widely recognized as being easy to work with. They possess versatility and can be effortlessly cut, drilled, welded, and shaped to suit different uses. With their consistent shape and availability in various thicknesses, widths, and lengths, steel flat bars are appropriate for a broad array of projects. Furthermore, their commendable strength and durability have made them highly favored in construction, manufacturing, and do-it-yourself endeavors. Nevertheless, it is crucial to acknowledge that handling steel flat bars may necessitate specific tools and expertise, and safety precautions should be implemented.
Q:Are steel flat bars suitable for making furniture or fixtures?
Yes, steel flat bars are suitable for making furniture or fixtures. They are strong, durable, and provide a modern and industrial aesthetic. They can be easily manipulated and welded to create various shapes and designs for furniture or fixtures.
Q:Where is the use of flat steel in electrical use?
Flat steel is used for earthing and galvanized. Mainly used for grounding and grounding to objects (such as the need to join line equipment ground and grounding, lightning arrester and grounding) and grounding connection between the neutral line and the center point, connected with the neutral line
Q:What are the different methods of surface coloring for steel flat bars?
There are several different methods of surface coloring for steel flat bars, each with its own unique advantages and applications. Some of the most commonly used methods include: 1. Hot-dip galvanizing: This process involves immersing the steel flat bar into a bath of molten zinc, which creates a protective layer on the surface. Galvanizing provides excellent corrosion resistance and is often used in outdoor or high-moisture environments. 2. Powder coating: Powder coating involves applying a dry powder paint to the surface of the steel flat bar, which is then cured using heat. This method offers a wide range of color options, excellent durability, and resistance to chipping, scratching, and fading. 3. Electroplating: Electroplating is a process where a thin layer of metal, such as chrome or nickel, is deposited onto the steel flat bar's surface using an electric current. This method can enhance the appearance of the steel while also providing corrosion resistance. 4. Paint coating: The traditional method of applying paint directly to the surface of the steel flat bar is still widely used. It allows for a wide variety of colors and finishes, but the durability and corrosion resistance may not be as high as other methods. 5. Chemical coloring: This method involves using chemicals to create a controlled oxidation process on the steel flat bar's surface, resulting in various colors and shades. Chemical coloring can provide an attractive appearance while also increasing corrosion resistance. 6. Anodizing: Anodizing is primarily used for aluminum, but it can also be applied to steel flat bars. It involves creating an oxide layer on the surface through an electrochemical process, resulting in enhanced corrosion resistance and the ability to add color through dyes. Each of these methods has its own set of advantages and considerations, such as cost, environmental impact, durability, and aesthetic appeal. The choice of surface coloring method will depend on the specific requirements of the application, including the desired appearance, level of corrosion resistance, and budget constraints.
Q:What are the different manufacturing processes for steel flat bars?
There are several different manufacturing processes for steel flat bars, including hot rolling, cold rolling, and extrusion. Hot rolling involves heating the steel billet and passing it through a series of rollers to reduce its thickness and shape it into a flat bar. Cold rolling, on the other hand, involves passing the steel through rollers at room temperature, resulting in a smoother surface finish. Extrusion is another method where the steel is forced through a die to create the desired shape and size. These processes offer various advantages and produce steel flat bars with different properties to meet specific requirements in different applications.

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