flat bar

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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: Are steel flat bars suitable for structural applications?: Certainly, steel flat bars are appropriate for structural purposes. They find extensive use in the construction field for beams, columns, and braces. Steel flat bars possess numerous advantages that render them well-suited for structural applications. First and foremost, steel is renowned for its robustness and durability, and this characteristic extends to flat bars as well. They exhibit a high tensile strength, enabling them to withstand substantial loads and provide structural stability. Furthermore, steel flat bars exhibit exceptional resistance to bending and twisting forces, instilling confidence in their reliability for structural endeavors. Moreover, steel flat bars are adaptable and conveniently modifiable to satisfy specific design requirements. They can be effortlessly cut, welded, drilled, and shaped to create diverse structural elements, thereby affording flexibility in construction projects. Additionally, steel flat bars are available in various sizes and thicknesses, facilitating customization to accommodate precise structural needs. Furthermore, steel proves to be a cost-effective material for structural applications. It is readily accessible and boasts a lengthy lifespan, thereby diminishing the necessity for frequent maintenance or replacements. Steel also possesses commendable fire resistance properties, a vital characteristic in ensuring structural safety. To conclude, steel flat bars are undeniably appropriate for structural applications, owing to their strength, durability, versatility, and cost-effectiveness. They enjoy widespread utilization within the construction industry and offer a multitude of benefits that solidify their status as a dependable choice for various structural components.

Q: What is the tolerance for thickness in steel flat bars?: The tolerance for thickness in steel flat bars can vary depending on the specific standards and specifications set by the manufacturer or industry. However, in general, the tolerance for thickness in steel flat bars is typically specified within a range of +/- a certain measurement, such as +/- 0.005 inches or +/- 0.13 millimeters. This tolerance ensures that the thickness of the steel flat bars remains within an acceptable range and meets the required dimensional specifications.

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: Are steel flat bars susceptible to warping or twisting?: Under certain conditions, steel flat bars can warp or twist. This can happen due to factors like uneven heating or cooling during manufacturing, improper handling or storage, excessive stress during use, or if the bars are of low quality or have structural defects. Proper handling and storage of steel flat bars is crucial to avoid situations that could cause excessive stress or uneven heating/cooling. Regular inspections and maintenance can help detect signs of warping or twisting early on, enabling preventive measures to be taken to avoid further damage.

Q: Are steel flat bars suitable for the construction of walkways or catwalks?: Yes, steel flat bars are suitable for the construction of walkways or catwalks. Steel flat bars are known for their strength, durability, and versatility, making them an ideal choice for such applications. They provide a sturdy and reliable surface for walking, capable of withstanding heavy loads and high foot traffic. Additionally, steel flat bars can be easily fabricated, cut, and welded to meet specific design requirements, allowing for customization and flexibility in construction projects. Their resistance to corrosion and weathering also ensures that walkways or catwalks made from steel flat bars will have a longer lifespan and require minimal maintenance. Overall, steel flat bars are a popular and widely used material for constructing walkways or catwalks due to their strength, durability, and adaptability.

Q: Are steel flat bars suitable for welding or fabrication?: Yes, steel flat bars are suitable for welding or fabrication. Steel flat bars are commonly used in various industries, including construction, manufacturing, and transportation, due to their versatility and strength. They can be easily welded together to create larger structures or fabricated into different shapes and sizes to meet specific project requirements. Welding steel flat bars allows for the creation of strong and durable joints, making them suitable for applications that require structural integrity. Additionally, steel flat bars can be easily cut, drilled, and formed, making them a popular choice for fabricating a wide range of products.

Q: Can steel flat bars be used for marine applications?: Yes, steel flat bars can be used for marine applications. However, the type of steel used is crucial in determining its suitability for marine environments. Stainless steel flat bars, in particular, are highly resistant to corrosion and are commonly used in marine applications due to their excellent strength and durability. Stainless steel's resistance to rust and corrosion makes it suitable for use in saltwater environments, where regular carbon steel would quickly deteriorate. Therefore, when selecting steel flat bars for marine applications, it is important to choose stainless steel to ensure longevity and performance in harsh marine conditions.

Q: Are steel flat bars available in different lengths for packaging purposes?: Yes, steel flat bars are available in different lengths for packaging purposes. Steel flat bars can be cut to specific lengths to meet the packaging requirements of various industries. This allows for efficient and secure packaging of different products. Whether it is for protecting fragile items or securing heavy machinery, steel flat bars in different lengths can be used to provide the necessary support and stability during transportation and storage.

Q: Are steel flat bars available in different surface hardness options?: Indeed, there is a variety of surface hardness options for steel flat bars. The surface hardness of a steel flat bar depends on the heat treatment it undergoes during manufacturing. By utilizing heat treatment techniques like quenching and tempering, different levels of hardness can be achieved on the steel's surface. These levels of hardness are typically assessed using the Rockwell hardness scale, with higher values denoting increased hardness. In industries such as construction, manufacturing, and engineering, steel flat bars with varying surface hardness options are widely employed to meet specific hardness requirements for their intended applications.

Q: Are steel flat bars suitable for the construction of bridges or flyovers?: Yes, steel flat bars are suitable for the construction of bridges or flyovers. Steel is a versatile and durable material that offers high strength-to-weight ratio, making it ideal for structural applications such as bridges and flyovers. Steel flat bars provide stability and support for the bridge or flyover structure, and their flat surface allows for easy welding and connection to other components. Additionally, steel is resistant to corrosion, which is crucial for structures exposed to outdoor environments and varying weather conditions. Overall, steel flat bars are a reliable and commonly used material in the construction of bridges and flyovers due to their strength, durability, and ease of use.

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