High quality deformed bar 6mm-50mm BS4449

High quality deformed bar 6mm-50mm BS4449 System 1

High quality deformed bar 6mm-50mm BS4449

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 m.t./month

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Product Description:

Specifications of HRB400 Deformed Steel Bar:

Standard	GB	HRB400
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length	6M, 9M,12M or as required
Place of origin	Hebei, China mainland
Advantages	exact size, regular package, chemical and mechanical properties are stable.
Type	Hot rolled deformed steel bar
Brand name	DRAGON

Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)

Grade	Technical data of the original chemical composition (%)
	C	Mn	Si	S	P		V
HRB400	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045		0.04-0.12
	Physical capability
	Yield Strength (N/cm²)		Tensile Strength (N/cm²)			Elongation (%)
	≥400		≥570			≥14

Theoretical weight and section area of each diameter as below for your information:

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m bar(kg)
6	28.27	0.222	2.664
8	50.27	0.395	4.74
10	78.54	0.617	7.404
12	113.1	0.888	10.656
14	153.9	1.21	14.52
16	201.1	1.58	18.96
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76
25	490.9	3.85	46.2
28	615.8	4.83	57.96
32	804.2	6.31	75.72
36	1018	7.99	98.88
40	1257	9.87	118.44
50	1964	15.42	185.04

Usage and Applications of HRB400 Deformed Steel Bar:

Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger..

Packaging & Delivery of HRB400 Deformed Steel Bar:

Packaging Detail: products are packed in bundle and then shipped by container or bulk vessel, deformed bar is usually naked strapping delivery, when storing, please pay attention to moisture proof. The performance of rust will produce adverse effect.

Each bundle weight: 2-3MT, or as required

Payment term: TT or L/C

Delivery Detail: within 45 days after received advanced payment or LC.

Label: to be specified by customer, generally, each bundle has 1-2 labels

Trade terms: FOB, CFR, CIF

Q:How do steel rebars contribute to the overall seismic performance of a building?: Steel rebars contribute to the overall seismic performance of a building by providing reinforcement and strength to the structure. They help resist the forces generated during an earthquake by increasing the ductility and tensile strength of the concrete. This reinforcement prevents the building from collapsing or suffering severe damage during seismic events, making it more resistant to lateral and vertical movements caused by ground shaking.

Q:Can steel rebars be used in structures with limited construction timeframes?: Yes, steel rebars can be used in structures with limited construction timeframes. Steel rebars are commonly used in construction projects due to their high tensile strength, which makes them suitable for reinforcing concrete structures. They can be quickly and efficiently installed, allowing for faster construction times compared to other reinforcement materials. Additionally, steel rebars provide durability and long-term stability to the structure, ensuring its integrity even in time-constrained projects. Therefore, utilizing steel rebars can be an effective solution for structures with limited construction timeframes, as they provide both strength and speed in the construction process.

Q:What are the safety measures to consider while handling steel rebars?: To minimize the risk of accidents or injuries when working with steel rebars, it is important to consider several safety measures: 1. Personal Protective Equipment (PPE): Always wear the necessary PPE, such as safety glasses, steel-toe boots, gloves, and a hard hat. These items will protect you from potential hazards like falling rebars, sharp edges, or flying debris. 2. Proper Lifting Techniques: Use proper lifting techniques to avoid straining your back or causing injury. Bend your knees, keep your back straight, and lift with your leg muscles instead of your back. 3. Secure Storage: Store steel rebars in a secure and organized manner to prevent them from falling or rolling onto someone. Stack them stably and use support structures if needed. 4. Communication and Signage: Maintain clear communication among workers involved in rebars handling. Use hand signals or verbal cues to prevent accidents. Additionally, place safety signs or warning labels in the area to indicate potential hazards or restricted access. 5. Appropriate Tools and Equipment: Use tools and equipment specifically designed for handling steel rebars. This may include lifting clamps, rebars benders, or cutting tools. Regularly inspect and maintain these tools to ensure proper functioning. 6. Inspection and Removal of Defective Rebars: Before using steel rebars, inspect them for defects such as cracks, rust, or damage. Remove and replace any defective rebars to ensure the structural integrity. 7. Secure Work Area: Keep the work area clean and free from clutter to prevent tripping hazards and allow for easy maneuvering. Ensure sufficient lighting and remove any obstacles or potential hazards. 8. Training and Supervision: Provide proper training to workers involved in rebars handling, ensuring they are aware of safety protocols and best practices. Regularly supervise their work to identify unsafe practices and provide guidance or corrective actions. By following these safety measures, the risk of accidents and injuries when handling steel rebars can be significantly reduced, resulting in a safer work environment.

Q:Can steel rebars be prefabricated off-site?: Absolutely, steel rebars can be manufactured off-site through the process of prefabrication. This method involves creating construction components in a controlled environment that is separate from the actual construction site. Steel rebars, which are frequently used to reinforce concrete structures, can be fabricated off-site in a specialized facility. Prefabricating steel rebars off-site provides several advantages. Firstly, it enables a more efficient and streamlined manufacturing process. By working in a controlled environment, the rebars can be produced with great precision and accuracy, ensuring consistent quality. This reduces the likelihood of errors and minimizes wastage. Furthermore, manufacturing steel rebars off-site can save time during the construction phase. Since the rebars are manufactured beforehand, they can be delivered to the site ready for installation, eliminating the need for on-site fabrication. This significantly speeds up the construction process and improves project timelines as a whole. Moreover, prefabrication offers improved safety conditions. By manufacturing the rebars off-site, workers are exposed to fewer on-site hazards, such as working at great heights or in confined spaces. The controlled environment of a fabrication facility also allows for better quality control and compliance with safety regulations. Lastly, prefabrication contributes to cost savings. The efficient production process, reduced on-site labor, and improved construction timelines all help to lower overall project costs. Additionally, the controlled environment of a fabrication facility enables better utilization of materials and decreases wastage. In summary, steel rebars can indeed be prefabricated off-site, providing numerous benefits such as enhanced quality, time savings, improved safety, and cost-effectiveness. This practice is widely utilized in construction projects to optimize efficiency and ensure the highest standards of construction.

Q:Are there any specific safety precautions to be taken while handling steel rebars?: There are several safety measures that need to be taken into account when handling steel rebars. Here are some important factors to consider: 1. Personal Protective Equipment (PPE) is essential. It is crucial to wear the appropriate gear, including safety goggles or glasses, gloves, and steel-toed boots. These items will help safeguard against potential eye injuries, cuts, and crushed toes. 2. Proper lifting techniques must be employed when handling rebars. This involves bending at the knees, maintaining a straight back, and utilizing leg muscles to lift the load. Twisting or jerking movements should be avoided to prevent strains or sprains. 3. Rebars should be stored in an organized and secure manner. They should not be leaned against walls or other structures to avoid falling and causing harm. 4. The sharp edges of rebars should be handled with caution. Careful handling is necessary to prevent cuts or punctures. Wearing protective gloves is recommended to minimize the risk of hand injuries. 5. When transporting rebars, it is crucial to ensure they are secured properly. This prevents movement or falling off the vehicle. Appropriate restraints such as ropes or straps should be used to secure the load safely. 6. It is important to be mindful of any overhead power lines or live electrical sources in the working area. Maintaining a safe distance from these sources prevents accidental contact with the rebars, which can conduct electricity. 7. Communication and awareness among workers are key. Constantly communicating with others in the vicinity ensures that everyone is aware of the presence of rebars. This helps prevent accidental injuries caused by tripping or colliding with the rebars. By adhering to these safety precautions, the risk of accidents or injuries while handling steel rebars can be minimized. It is also important to undergo proper training and comply with any specific safety guidelines provided by your employer or industry regulations.

Q:How do steel rebars resist corrosion?: Steel rebars resist corrosion through a process called passivation. When the steel is exposed to air and moisture, a thin layer of iron oxide forms on its surface, which acts as a protective barrier against further corrosion. This layer, also known as rust, prevents oxygen and moisture from reaching the inner layers of steel, thereby preventing further oxidation. Additionally, steel rebars are often coated with materials such as epoxy or zinc to provide an extra layer of protection against corrosion. These coatings act as a physical barrier between the steel and the environment, preventing contact with corrosive elements. Regular maintenance, such as cleaning and applying protective coatings, can also help to extend the lifespan of steel rebars and prevent corrosion.

Q:How do steel rebars improve the flexural strength of concrete?: Steel rebars improve the flexural strength of concrete by providing tensile strength, which is typically lacking in concrete. The rebars act as reinforcement, absorbing the tension forces that occur when the concrete is subjected to bending or flexing. This combination of concrete and steel rebars creates a composite material that is stronger and more resistant to cracking or breaking under flexural loads.

Q:Can steel rebars be used in structures with high levels of carbonation or acid attack?: No, steel rebars should not be used in structures with high levels of carbonation or acid attack. Steel is susceptible to corrosion in acidic environments, and high carbonation levels can increase the acidity of the surroundings. In such conditions, alternative materials that are resistant to corrosion and acid attack, such as stainless steel or fiber-reinforced polymers, should be considered for structural reinforcement.

Q:What are the weight and density of steel rebars?: The weight and density of steel rebars can vary depending on the specific composition and size of the rebar. On average, a typical steel rebar has a density of around 7850 kilograms per cubic meter and weighs approximately 7.85 kilograms per meter.

Q:How do steel rebars contribute to sustainable construction practices?: Steel rebars contribute to sustainable construction practices in several ways. Firstly, they are made from recycled materials, reducing the need for new resources and minimizing the environmental impact of steel production. Additionally, steel rebars have a long lifespan and high durability, leading to less frequent replacement and maintenance, which in turn reduces waste and energy consumption. Moreover, steel rebars provide structural strength to reinforced concrete, allowing for the construction of taller and more efficient buildings, which can optimize land use and minimize the urban sprawl. Overall, steel rebars play a vital role in sustainable construction by promoting resource conservation, reducing waste, and enhancing the longevity and efficiency of structures.

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