FLAT BAR 20-200

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Product Description:

Specification of Mild Steel Flat Bar

Commodity: Mild Steel Flat Bar

Standard: GB;JIS

Material: Q195-235;SS400

Brand name: FLATSPACE

Origin place: China

Thickness: 3mm-30mm

Width:20mm-200mm

Length: Max 12m

Certification: SGS/BV

Chemical composition of Q235

Alloy No

Grade

Element(%)

Q235

0.12—0.20

0.3—0.7

≤0.045

≤0.3

Physical properties of Q235

Alloy No	Grade	Yielding strength point(Mpa)				Tensile strength (Mpa)	Elongation after fracture(%)
		Thickness (mm)					Thickness (mm)
		≤16	＞16--40	＞40--60	＞60--100		≤16	＞16--40	＞40--60	＞60--100
		≥					≥
Q235	B	235	225	215	205	375--500	26	25	24	23

Usage/Applications of Mild Steel Flat Bar

Widely used for construction, Machinery manufacturing, Iron tower steel structure, Shipbuilding; Steel grating, Staircase, Bridge, Viaduct, Railway spare parts, Boilers making etc.

Packaging & Delivery of Mild Steel Flat Bar

Packaging Details: The Mild Steel Flat Bars are packed in bundles and loaded in 20 feet/40 feet container, or shipped by bulk cargo ,also we can do as customer's requirements.

Delivery Details:30~45 days upon the receipt of buyer payment by T.T. or L/C.

Production Flow of Mild Steel Flat Bar

The Mild steel flat bar is made through three processes:

1.Feeding the material: Feeding the row material (the steel plate) to Slitting Line.

2.Slitting:The steel plate would be slitted into expected width by lengthways cutter.

3. Leveled and cutting: The plat bar would be ground into level by the grinder and then cut into required length

Q: How is the thickness of a steel flat bar measured?: The thickness of a steel flat bar is typically measured using a caliper or a micrometer. These tools allow for precise measurement by closing their jaws around the bar and displaying the thickness on a scale or digital readout.

Q: Please: hot galvanized flat steel and copper clad steel ground!: Copper layer adhesion is high: because the copper layer and the surface of the steel is the combination of molecules, so the degree of adhesion is high, in the stranding of synthetic strands, the copper layer will not be damaged, there will be no separation, skin cracking and cracking.

Q: What are the common methods of surface protection for steel flat bars?: To safeguard steel flat bars from corrosion and elongate their lifespan, there exist various prevalent techniques for surface protection. One technique entails the application of a safeguarding coating. This can be achieved through processes like galvanization, wherein a layer of zinc is affixed to the steel flat bar's surface. This zinc coating acts as a sacrificial layer, shielding the steel from corrosion. Another coating alternative involves painting, where a layer of paint is administered to the surface. The paint acts as a barrier, blocking moisture and other corrosive elements from reaching the steel. Corrosion inhibitors represent another surface protection method. These inhibitors are commonly administered as a thin film or coating on the steel flat bar's surface. They function by forming a protective layer that restricts the corrosion process. Spraying, brushing, or dipping the steel flat bars into a solution containing the inhibitor are methods for applying corrosion inhibitors. Moreover, certain steel flat bars undergo protection through the process of metal plating. This entails the application of a thin layer of a different metal like chrome or nickel onto the steel's surface. The plating acts as a safeguarding barrier, averting corrosion while enhancing the aesthetic appeal of the steel flat bar. Lastly, mechanical surface treatments serve as another surface protection method for steel flat bars. These treatments involve processes like shot blasting or sandblasting, where small abrasive particles are propelled at high speeds to eliminate any rust or surface contaminants. This facilitates the creation of a clean and smooth surface, prepared for further protection like painting or coating. In conclusion, the various common methods for surface protection of steel flat bars encompass protective coatings, corrosion inhibitors, metal plating, and mechanical surface treatments. The chosen method depends on factors like the intended use of the steel flat bars, environmental conditions, and aesthetic requirements.

Q: Are steel flat bars suitable for making conveyor systems?: Yes, steel flat bars are suitable for making conveyor systems. They possess excellent strength, durability, and load-bearing capacity, making them ideal for supporting heavy loads and enduring continuous movement. Additionally, steel flat bars can be easily fabricated and customized to meet specific conveyor system requirements, making them a popular choice in industrial applications.

Q: How is a steel flat bar manufactured?: Hot rolling is the method used to manufacture a steel flat bar. This involves heating a large rectangular steel billet until it becomes malleable. The billet is then passed through a series of rolling mills where it is gradually compressed and shaped into a flat bar. To begin the manufacturing process of a steel flat bar, the steel billet must be prepared. Typically made of carbon steel, the billet is cast into a rectangular shape and then reheated in a furnace to a temperature that allows for easy shaping and manipulation. Once the billet has reached the desired temperature, it is fed into a series of rolling mills. These mills consist of rollers that gradually reduce the thickness and shape of the steel billet as it passes through. The billet is subjected to immense pressure from the rollers, causing it to elongate and take on the desired flat shape. As the billet passes through the rolling mills, it is cooled and lubricated to prevent overheating and excessive wear. Cooling methods such as water or air jets are used, while lubricants like oil or emulsions are applied to reduce friction and improve the surface finish. After undergoing several passes through the rolling mills, the steel billet is transformed into a flat bar with the desired dimensions. The bar is then cut to the required length and allowed to cool. Additional processes such as straightening, surface treatment, and quality inspection may be carried out before the bar is ready to be shipped or used in various applications. In summary, the manufacturing process of a steel flat bar involves heating the steel billet, passing it through rolling mills to shape and reduce its thickness, and then cutting and cooling the bar to its final dimensions. This process ensures that the steel flat bar possesses the necessary strength, durability, and surface finish required for its intended application.

Q: Why do some buildings need a steel bar around the top?: Galvanized round steel refers to the cross section of round solid steel. The specifications are expressed in millimeters of diameter, such as 50, which means a round bar of 50 millimeters in diameter. Round steel is not the same as other steel bars. Round steel is round in shape and has no ribs and no ribs, which makes the bonding strength between round bar and concrete very small.

Q: How do steel flat bars contribute to the strength and stability of structures?: Steel flat bars play a crucial role in enhancing the strength and stability of structures in multiple ways. To begin with, their flat shape allows for a wide surface area, facilitating the even distribution of loads. Consequently, they can effectively bear heavy weights and resist bending or warping, making them particularly suitable for load-bearing applications like beams, columns, and trusses. Furthermore, the high tensile strength of steel flat bars enables them to withstand significant tension without breaking. This characteristic is of utmost importance in structural design, ensuring their ability to endure forces that pull them apart, such as those arising from earthquakes or strong winds. Moreover, the rigid nature of steel flat bars acts as a deterrent against excessive deflection or movement within structures. By functioning as stiffening elements, they effectively minimize any undesired bending or sagging, thereby enhancing the overall stability of the structure. Additionally, steel flat bars exhibit exceptional durability and corrosion resistance, making them highly suitable for use in diverse environments and weather conditions. This longevity guarantees that structures constructed with steel flat bars will maintain their strength and stability over an extended period. In conclusion, the incorporation of steel flat bars in construction significantly contributes to the strength and stability of structures. Their ability to provide even load distribution, high tensile strength, resistance to deflection, and durability make them a reliable and indispensable component in building structures capable of withstanding various external forces while preserving their integrity for years to come.

Q: Are steel flat bars prone to rusting?: Yes, steel flat bars are prone to rusting. Steel is primarily made of iron, which is highly susceptible to rust when exposed to moisture and oxygen over time. Rust is the result of a chemical reaction called oxidation, where iron combines with oxygen to form iron oxide. This process weakens the steel's structural integrity and can lead to deterioration and eventual failure if not addressed. To prevent or minimize rusting, steel flat bars are often coated with protective finishes such as paint, galvanization, or powder coating. Regular maintenance and proper storage, such as keeping the steel dry and away from moisture, can also help prevent rusting.

Q: Are steel flat bars commonly used in the manufacturing industry?: Steel flat bars are a common sight in the manufacturing industry, with their versatility and widespread use across various applications like construction, fabrication, and machinery. Manufacturers favor steel flat bars for their strength, durability, and cost-effectiveness. Furthermore, these bars offer customization and design flexibility as they can be easily shaped, cut, and welded. Additionally, they provide stability and support, making them ideal for structural purposes in buildings and infrastructure projects. In summary, steel flat bars play a vital role in the manufacturing industry due to their numerous benefits and extensive range of applications.