ASTM deformed steel bar for construction

ASTM deformed steel bar for construction System 1

ASTM deformed steel bar for construction System 2

ASTM deformed steel bar for construction

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 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

Deformed Steel Bar in container

Deformed Steel Bar in factory

Note:

1. Our products are produced according to national standard (GB), if not, supply according to national standards (GB) or agreement as customer required.

2. Other Grade and Standard Deformed Steel Bar we can supply:

Grade: GR40/GR60, G460B/B500A/B500B/B500C,BST500S

Standard: ASTM, BS, DIN

The Minimum Order Quantity of these products is high, and need to be confirmed.

3. We can not only supply Deformed Steel Bar; if you need anything about building materials, please contact us for further information.

4. Please send us your detail specifications when inquire. We will reply to you as soon as possible. We sincerely hope we can establish a long stable business relationship.

ASTM deformed steel bar for construction

Q: How do steel rebars contribute to the load-bearing capacity of concrete slabs?: Steel rebars contribute to the load-bearing capacity of concrete slabs by providing reinforcement and increasing the overall strength and durability of the structure. As concrete is strong in compression but weak in tension, steel rebars are embedded within the concrete to counteract tension forces. The rebars absorb and distribute the tensile stresses, preventing the concrete from cracking or failing under heavy loads. This combination of concrete and steel rebars creates a reinforced structure that can bear more weight and withstand various external forces, ensuring the integrity and safety of the concrete slab.

Q: How are steel rebars used in parking structures?: Steel rebars are used in parking structures to reinforce the concrete and provide structural strength. They are typically embedded within the concrete to ensure that the structure can withstand heavy loads and resist any potential cracks or damages. The rebars help distribute the weight evenly, enhancing the overall stability and durability of the parking structure.

Q: Can steel rebars be used in bridges?: Bridges can indeed utilize steel rebars. They are frequently incorporated into concrete structures like bridges to reinforce them. This reinforcement gives the concrete added robustness, enabling it to withstand substantial loads and forces. By employing steel rebars in bridges, their durability and structural integrity are improved, ensuring the safety of both the bridge and its users. Moreover, steel rebars possess exceptional tensile strength, a crucial characteristic for countering the tensile forces bridges commonly encounter. In summary, steel rebars are vital elements in bridge construction, contributing significantly to their strength, longevity, and safety.

Q: What is the standard length of steel rebars?: The length of steel rebars commonly differs according to the region and project specifications. In the United States, for instance, the standard length is typically 20 feet or 6.1 meters. Nevertheless, it is crucial to acknowledge that rebars can be tailored and adjusted to meet the required lengths for a specific construction project. Moreover, in certain countries or regions, rebars may come in various standard lengths as per local construction norms and regulations. Hence, it is imperative to refer to local codes and specifications for determining the appropriate standard length of steel rebars for a particular project.

Q: Are there any alternative materials to steel rebars for reinforcement?: Indeed, there exists a variety of alternative materials for reinforcement instead of steel rebars. One such material is FRP rebars, which consist of high-strength fibers like carbon, glass, or aramid embedded in a polymer matrix. These FRP rebars possess numerous advantages over steel rebars, such as a high strength-to-weight ratio, resistance to corrosion, and electromagnetic neutrality. They prove particularly valuable in situations where corrosion is a concern, such as marine environments or structures exposed to chemicals. Another alternative material is basalt rebars, which are formed by reinforcing basalt fiber with a polymer matrix. Similar to FRP rebars, basalt rebars offer advantages like a high strength-to-weight ratio and corrosion resistance. Additionally, they are non-conductive and non-magnetic, making them suitable for applications where electromagnetic neutrality is crucial, like in MRI facilities or near power lines. Besides FRP and basalt rebars, other alternative reinforcement materials include bamboo, timber, and composites made from natural fibers such as hemp or flax. These materials are commonly employed in sustainable construction practices or in regions where they are more easily accessible compared to traditional steel rebars. While they may not possess the same level of strength as steel, they can still provide adequate reinforcement for specific applications and offer other benefits like low environmental impact or ease of handling and installation. In conclusion, the availability of alternative materials to steel rebars provides engineers and architects with a range of options to select from based on their project's specific requirements, including factors such as strength, durability, cost, and sustainability.

Q: What are the guidelines for the proper spacing of steel rebars in slabs?: The guidelines for the proper spacing of steel rebars in slabs are crucial to ensure the structural integrity and strength of the concrete slab. Here are the general guidelines to follow: 1. Rebar Diameter: The diameter of the steel rebar should be determined based on the load and design requirements. Common rebars sizes range from 6mm to 32mm. 2. Spacing: The spacing between rebars is determined by the thickness of the slab and the design specifications. As a general rule, the spacing should not exceed three times the slab thickness. For example, if the slab thickness is 150mm, the maximum spacing between rebars should be 450mm. 3. Edge Distance: The distance between the rebar and the edge of the slab is also crucial. The minimum edge distance should be at least 50mm to prevent cracking and ensure proper load distribution. 4. Clear Cover: The clear cover refers to the distance between the rebar and the surface of the slab. It is essential to provide sufficient clear cover to protect the rebar from corrosion. The clear cover requirements vary depending on the environmental conditions, but commonly range from 20mm to 40mm. 5. Reinforcement Ratio: The reinforcement ratio is the amount of steel reinforcement used per unit area of the slab. This ratio is determined by the load requirements and the design specifications. Typically, the reinforcement ratio ranges from 0.5% to 2%. 6. Lap Splicing: In cases where the length of the rebar is insufficient, lap splicing is required. The lap length should be determined based on the rebar diameter, grade, and design requirements. 7. Placement: The rebars should be placed accurately and securely inside the slab formwork. Proper alignment and placement ensure that the rebars are positioned correctly to resist the anticipated loads. It is important to note that these guidelines are general and may vary depending on the specific project, structural design, and local building codes. It is recommended to consult with a structural engineer or refer to the relevant building codes and standards for precise guidelines specific to your project.

Q: How are steel rebars used in the construction of chemical processing plants?: To reinforce and strengthen chemical processing plants, steel rebars are commonly employed. These rebars, also known as reinforcing bars, are typically crafted from carbon steel and are utilized to fortify various concrete structures like foundations, walls, columns, and beams. Considering the handling of hazardous and corrosive substances in chemical processing plants, the infrastructure is subjected to significant stress. Therefore, the utilization of steel rebars is of utmost importance as it safeguards the integrity of the structures and mitigates the risk of collapse or failure. When constructing chemical processing plants, it is customary to embed steel rebars within the concrete to create a reinforced concrete structure. This amalgamation of concrete and steel rebars forms a composite material that possesses augmented tensile strength, enabling it to endure the heavy loads, vibrations, and extreme temperature fluctuations frequently encountered in chemical plants. Furthermore, the deployment of steel rebars aids in averting cracks and structural deformations caused by shrinkage, settling, or external forces. This is particularly critical in chemical processing plants, where maintaining a secure and stable environment is imperative for employee safety and the plant's operational integrity. Moreover, steel rebars exhibit exceptional resistance to corrosion, a crucial attribute in chemical processing plants where exposure to corrosive chemicals and high humidity levels is prevalent. By serving as a protective barrier for the underlying concrete, steel rebars effectively prevent deterioration induced by corrosion, thereby prolonging the lifespan of the structures and reducing maintenance expenses. Overall, the presence of steel rebars assumes a vital role in the construction of chemical processing plants as they ensure structural stability, durability, and corrosion resistance, all of which are essential for the safe and efficient functioning of these facilities.

Q: How do steel rebars impact the constructability and formwork requirements of concrete elements?: The constructability and formwork requirements of concrete elements are greatly affected by steel rebars. These reinforcement bars, also called rebars, are extensively used in concrete construction to strengthen and increase the durability of structural elements. To begin with, the presence of rebars impacts the constructability of concrete elements by providing structural integrity and load-bearing capacity. By strategically placing rebars in areas like beams, columns, and slabs, the overall strength and stability of the structure are significantly improved. This enables the construction of larger and more intricate concrete elements, as rebars help distribute loads more efficiently. Additionally, rebars also have an impact on the formwork requirements of concrete elements. Formwork refers to the temporary structure used to support the concrete until it sets and gains enough strength to support itself. The inclusion of rebars requires careful consideration when designing the formwork, as the presence of reinforcement bars can increase the weight and volume of the concrete. The size, spacing, and positioning of rebars influence the design and construction process of the formwork. The formwork must be designed to accommodate the rebars and ensure proper placement and consolidation of the concrete around them. This may entail additional reinforcement in the formwork, such as tie wires or supports, to prevent displacement or movement of the rebars during concrete pouring. Furthermore, rebars also impact the overall timeline and cost of the construction project. The need for additional formwork materials and reinforcement can raise both material and labor costs. Additionally, the presence of rebars may require more time for formwork installation, concrete pouring, and curing, as the rebars need to be correctly positioned and secured within the concrete elements. In conclusion, steel rebars have a significant impact on the constructability and formwork requirements of concrete elements. They enhance the structural integrity of the concrete, allowing for the construction of larger and more intricate elements. However, their inclusion also necessitates careful planning and design of the formwork, considering the size, spacing, and positioning of the rebars. Overall, rebars play a crucial role in ensuring the strength, stability, and longevity of concrete structures.

Q: How do steel rebars affect the structural integrity of a building?: Steel rebars play a crucial role in enhancing the structural integrity of a building. They are used to reinforce concrete structures by providing extra strength and resistance to various forces, such as tension, compression, and bending. The inclusion of steel rebars helps to distribute loads more evenly, prevent cracks, and increase the overall durability and stability of the building.

Q: How do steel rebars contribute to the overall resistance against natural disasters?: Steel rebars contribute to the overall resistance against natural disasters in various ways. Firstly, steel rebars are extensively used in reinforced concrete structures such as buildings, bridges, and dams, which are designed to withstand natural disasters like earthquakes and hurricanes. The addition of steel rebars increases the structural integrity of these concrete elements, making them more resistant to the forces exerted by such disasters. During earthquakes, the flexible nature of steel rebars allows them to absorb and distribute the seismic energy throughout the structure. This helps in dissipating the destructive forces and reducing the chances of collapse or severe damage. The presence of steel rebars also enhances the ductility of reinforced concrete structures, which means they can deform and flex without breaking, thus improving their overall resilience against seismic events. In the case of hurricanes or strong winds, steel rebars provide additional strength and stability to concrete structures. They act as reinforcement, preventing the concrete from cracking or crumbling under the pressure of high winds. The combination of the tensile strength of steel and the compressive strength of concrete creates a robust and durable structure that can withstand the powerful forces generated by hurricanes. Furthermore, steel rebars play a crucial role in the construction of flood-resistant structures. During flooding events, the strength and corrosion resistance of steel rebars ensure the structural integrity of buildings and other infrastructure, preventing them from being severely damaged or washed away. The use of steel rebars in flood-prone areas helps in creating resilient structures that can withstand the erosive forces of water and remain intact. Overall, steel rebars significantly contribute to the overall resistance against natural disasters by enhancing the strength, durability, and flexibility of concrete structures. Their presence improves the structural integrity and resilience of buildings, bridges, and other infrastructure, making them more capable of withstanding the destructive forces unleashed by earthquakes, hurricanes, and floods.

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