flat bar

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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: What is the negative deviation allowed by the national standard for galvanized flat steel of 40*4?: 40*4 galvanized flat steel GB permitted negative deviation value is the thickness deviation value is 0.2mm, the deviation 0.4mm, the width deviation value is the upper deviation 0.5mm, lower deviation 1.0mm

Q: What is the carbon content in steel flat bars?: The carbon content in steel flat bars varies depending on the grade and type of steel being used. Generally, carbon steel flat bars contain a carbon content ranging from 0.15% to 0.60%. However, high carbon steel flat bars can have a carbon content as high as 2.1%. The carbon content in steel flat bars is a crucial factor that determines the strength, hardness, and other mechanical properties of the steel. It is important to consider the intended application and requirements when selecting the appropriate carbon content for steel flat bars.

Q: Are steel flat bars suitable for outdoor use?: Indeed, steel flat bars prove to be fitting for outdoor utilization. The durability and corrosion resistance of steel render it an impeccable selection for outdoor purposes. In fact, steel flat bars exhibit the ability to endure severe weather conditions, such as rain, snow, and extreme temperatures, without succumbing to rust or deterioration. Consequently, they are frequently employed in construction, fencing, and various outdoor structures. Furthermore, to heighten their resistance to corrosion and prolong their lifespan, steel flat bars can be coated with protective finishes, such as galvanization or powder coating. Ultimately, steel flat bars emerge as a dependable and enduring choice for outdoor use.

Q: What is the maximum thickness of a steel flat bar?: Various factors, including the manufacturing process, the desired application, and the specific type of steel used, determine the maximum thickness of a steel flat bar. Typically, the thickness of steel flat bars can vary from a few millimeters to several inches. Nevertheless, it is crucial to seek guidance from manufacturers, engineers, or industry standards to ascertain the maximum thickness suitable for a particular steel flat bar, as it may differ based on its intended use and structural needs.

Q: What are the different types of steel coatings available for flat bars?: There are several types of steel coatings available for flat bars, including galvanized coating, powder coating, epoxy coating, and enamel coating.

Q: How do you prevent twisting of steel flat bars during welding?: To avoid the twisting of steel flat bars during welding, there are several precautions that can be taken: 1. Proper preparation is essential. It is important to ensure that the flat bars are thoroughly cleaned and free from any contaminants such as oil, grease, or rust. A wire brush or grinder can be used to remove any impurities on the surface. 2. Securely clamp the flat bars before welding. Sturdy clamps or magnetic welding fixtures can be used to firmly hold the bars in place, preventing any movement or twisting during the welding process. 3. Prior to performing the full weld, temporary tack welds can be used to hold the flat bars together. This will help maintain their alignment and prevent twisting while the final weld is applied. 4. Adopt a strategic weld sequence that minimizes heat distortion and potential twisting. Instead of welding a continuous bead along the entire length of the flat bars, it is recommended to alternate between different sections or weld in short intervals, allowing each area to cool before continuing. 5. Control the heat input during welding by using the appropriate welding technique and adjusting the welding parameters. High heat levels can cause the steel to expand and contract, leading to twisting. Techniques such as pulse welding or reducing the amperage can help control heat input and minimize the risk of twisting. 6. For thicker or more susceptible steel flat bars, preheating the material before welding can help reduce the risk of twisting. Additionally, performing post-weld heat treatment can relieve residual stresses and prevent distortion. 7. Allow the welded flat bars to cool slowly and naturally after welding. Rapid cooling, such as through water quenching, can induce additional stresses and contribute to twisting. It is important to avoid abrupt temperature changes and provide sufficient time for the welded bars to cool down gradually. By implementing these preventive measures, the risk of twisting in steel flat bars during welding can be significantly reduced, ensuring a successful and distortion-free weld.

Q: Can steel flat bars be easily bent or shaped?: Steel flat bars can be easily bent or shaped depending on their thickness and the type of steel used. Thinner flat bars are generally more malleable and can be bent or shaped with relative ease. However, thicker and harder steel flat bars may require more force and specialized tools to bend or shape. It is important to note that the bending or shaping process may also depend on the specific requirements and desired outcome. Professional metalworkers or fabricators often use techniques such as heat treatment or cold working to achieve the desired shape or bend in steel flat bars.

Q: Can steel flat bars be used for making hand tools or equipment?: Hand tools or equipment can indeed be made using steel flat bars. Steel, a material known for its strength and durability, is commonly used in the manufacturing process of various tools and equipment. The versatility of flat bars allows for easy shaping and forming into different sizes and designs, specifically tailored to meet the unique requirements of hand tools or equipment. Moreover, steel flat bars offer exceptional strength and stability, making them ideal for applications where durability and reliability are of utmost importance. Furthermore, the corrosion resistance of steel ensures that hand tools or equipment crafted from steel flat bars will have a longer lifespan. In conclusion, steel flat bars are a favored option when it comes to creating hand tools or equipment due to their robustness, adaptability, and longevity.

Q: Can steel flat bars be used for manufacturing tools or machinery?: Manufacturing tools or machinery is indeed possible with steel flat bars. Steel, being a highly versatile and durable material, is apt for a wide array of applications. Due to their strength, rigidity, and capacity to withstand heavy loads and pressure, steel flat bars are commonly employed in the manufacturing industry. They can be easily shaped, welded, and machined to fabricate diverse components and parts for tools and machinery. Moreover, steel flat bars are renowned for their exceptional resistance to corrosion, a vital factor for ensuring the durability and dependability of tools and machinery. All in all, steel flat bars are a favored choice in the manufacturing industry, thanks to their reliability, versatility, and suitability for producing top-notch tools and machinery.

Q: What's the difference between hot rolled flat steel and flat rolling tool flat steel?: Hot rolled flat steel rolling tools - tool steel, commonly used for measuring and cutting tools with what. Material is tool steel, such as carbon tool steel (T8, T10), alloy tool steel (Cr12MoV), high-speed steel, etc..

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