Deformed Bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Supply Capability:: -

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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: Are there any limitations in using steel rebars in construction?: Yes, there are limitations in using steel rebars in construction. Some of the limitations include susceptibility to corrosion, which can weaken the structure over time if not properly protected; limited flexibility compared to other materials, which may impact design options; and potential weight constraints in certain applications. Additionally, steel rebars can be expensive, requiring careful budgeting and cost considerations during construction projects.

Q: What is the effect of exposure to acidic soil on steel rebars?: Exposure to acidic soil can have a detrimental effect on steel rebars. The acidic nature of the soil can cause corrosion and degradation of the steel rebars over time. This corrosion weakens the rebars, reducing their structural integrity and potentially leading to structural failures in constructions where they are used. Regular inspections and appropriate measures, such as protective coatings or using non-corrosive materials, are necessary to prevent or mitigate the negative effects of acidic soil on steel rebars.

Q: What is the process of reinforcing concrete walls with steel rebars?: To ensure the strength and integrity of a concrete wall, it is necessary to reinforce it with steel rebars. This process consists of several steps. Engineers first determine the design and layout of the rebars based on the specific requirements of the wall. This involves considering the diameter, spacing, and placement of the rebars. Once the design is finalized, construction of the concrete wall can begin. The rebars are typically placed in a grid-like pattern within the formwork or molds. They are positioned at predetermined intervals and secured in place using wire ties or other fastening methods. During the pouring of the concrete, the rebars are completely enclosed within the mixture. This ensures that the concrete and steel work together to resist tension forces and provide additional strength to the wall. Once the concrete has been poured and cured, the rebars become an integral part of the structure. They act as reinforcement by absorbing and distributing tensile forces that may arise from external loads or environmental factors. In addition to the initial reinforcement, construction workers may also install vertical rebars along the height of the wall, commonly referred to as wall ties. These rebars provide further stability and prevent the wall from cracking or collapsing under pressure. Overall, the process of reinforcing concrete walls with steel rebars requires careful planning, precise placement, and proper integration between the rebars and the concrete. This technique significantly enhances the strength and durability of the walls, enabling them to withstand heavier loads and ensuring the safety of the structure.

Q: What is the impact strength of steel rebars?: The impact strength of steel rebars is high, making them capable of withstanding heavy loads and absorbing energy without breaking or fracturing easily.

Q: How do steel rebars contribute to sustainable construction practices?: There are several ways in which steel rebars contribute to sustainable construction practices: 1. Enhanced durability: Steel rebars possess a high level of durability and have a long lifespan, which results in less frequent replacements or repairs. This helps in minimizing the generation of waste and conserving valuable resources. 2. Advancement in structural strength: Steel rebars offer superior strength and structural integrity to reinforced concrete. This enables the construction of tall buildings and structures, reducing the need for land consumption and encouraging vertical growth in urban areas. 3. Energy-conscious production: Steel rebars are manufactured using energy-efficient processes, reducing the carbon footprint associated with their production. Moreover, their use in reinforced concrete structures improves energy efficiency by reducing the requirement for additional insulation materials. 4. Recyclability: Steel rebars are entirely recyclable, meaning they can be melted down and reused in new construction projects. This diminishes the demand for new steel, conserving natural resources and reducing greenhouse gas emissions related to steel production. 5. Waste reduction: The application of steel rebars in reinforced concrete structures reduces the quantity of construction and demolition waste generated. By providing a strong and long-lasting structure, it minimizes the necessity for frequent renovations or replacements, ultimately reducing waste generation over time. 6. Strengthened seismic resistance: Steel rebars enhance the ability of buildings and structures to withstand earthquakes and other natural disasters, thus improving their seismic resistance. This ensures the safety of occupants and reduces the post-disaster reconstruction efforts, contributing to sustainable development. Overall, the use of steel rebars in construction promotes sustainability by reducing waste, conserving resources, improving energy efficiency, and enhancing the durability and resilience of structures.

Q: What are the different methods for reinforcing concrete with steel rebars?: Some of the different methods for reinforcing concrete with steel rebars include placing the rebars in a grid pattern throughout the concrete structure, using stirrups or ties to hold the rebars in place, and using pre-fabricated mesh or rebar mats as a convenient way to reinforce large areas of concrete. Additionally, epoxy-coated rebars can be used to protect against corrosion and increase the longevity of the reinforced concrete.

Q: What is the cost-effectiveness of using steel rebars?: Steel rebars are widely regarded as highly cost-effective. They provide reinforced concrete structures with strength and durability, making them a popular choice in construction. One major advantage of steel rebars is their extended lifespan, which minimizes the need for frequent repairs or replacements. This can lead to significant cost savings over time, allowing the initial investment in steel rebars to be recovered. Furthermore, steel rebars are readily available and have a lower cost compared to alternative reinforcement materials like carbon fiber or fiberglass. This makes them a cost-effective option for various construction projects. Moreover, steel rebars possess exceptional tensile strength, enabling them to withstand heavy loads and seismic forces. By reinforcing concrete structures with steel rebars, the risk of structural failure or collapse is greatly reduced. Consequently, this reduces the need for expensive repairs or reconstruction in the event of a disaster, resulting in additional cost savings. Additionally, steel rebars are versatile and can be easily fabricated and customized to meet specific project requirements. This versatility allows for efficient installation and reduces labor costs, further enhancing the cost-effectiveness of using steel rebars. In conclusion, the use of steel rebars is highly cost-effective due to their long lifespan, comparatively low cost, excellent tensile strength, and versatility. By opting for steel rebars as a reinforcement material, construction projects can benefit from reduced maintenance and repair expenses, improved structural integrity, and overall long-term savings.

Q: What is the minimum lap length required for steel rebars in concrete?: The minimum lap length required for steel rebars in concrete varies depending on the specific design and requirements of the structure, but it is generally recommended to follow the guidelines provided by relevant building codes and standards. These guidelines consider factors such as the diameter of the rebar, the concrete strength, and the structural loadings to determine the minimum lap length necessary for ensuring proper bonding and structural integrity. It is essential to consult the appropriate building codes or a structural engineer to accurately determine the minimum lap length for steel rebars in a concrete structure.

Q: What are the different types of steel rebars used in column reinforcement?: There are several different types of steel rebars commonly used in column reinforcement. These include: 1. Mild Steel Rebars: Also known as carbon steel rebars, these are the most commonly used type of rebars in construction. They have a low carbon content and are readily available and cost-effective. Mild steel rebars are suitable for most general construction projects. 2. High-Strength Deformed (HSD) Steel Rebars: HSD rebars have a higher carbon content and are heat-treated to increase their strength. They have a greater yield strength and tensile strength compared to mild steel rebars. HSD rebars are commonly used in high-rise buildings and structures where greater strength is required. 3. Epoxy-Coated Rebars: These rebars are coated with an epoxy layer to protect them from corrosion. Epoxy coating acts as a barrier between the steel and the surrounding environment, preventing the steel from coming into contact with moisture and other corrosive elements. Epoxy-coated rebars are commonly used in coastal areas or environments with high humidity levels. 4. Stainless Steel Rebars: These rebars are made from stainless steel, which contains chromium and other alloying elements that provide excellent resistance to corrosion. Stainless steel rebars are suitable for structures exposed to aggressive environments such as chemical plants, wastewater treatment facilities, and marine structures. 5. Galvanized Rebars: Galvanized rebars are coated with a layer of zinc to protect them from rust and corrosion. The zinc coating acts as a sacrificial layer, protecting the underlying steel from coming into contact with corrosive elements. Galvanized rebars are commonly used in corrosive environments where moisture and chemicals are present. It is important to consider the specific requirements of the project, including the level of corrosion resistance needed, the structural strength required, and the environmental conditions, in order to choose the appropriate type of steel rebar for column reinforcement.

Q: Can steel rebars be galvanized for added protection?: Indeed, an additional protective measure can be taken for steel rebars by galvanizing them. Galvanization involves the application of a thin layer of zinc onto the surface of the steel rebar. This zinc coating serves as a sacrificial layer, effectively safeguarding the rebar against corrosion. It creates a barrier between the steel and its surroundings, effectively blocking moisture and other corrosive elements from penetrating the rebar's surface. Galvanized steel rebars are widely utilized in construction ventures, particularly in regions prone to corrosion, such as coastal areas or environments with high humidity levels. Through the galvanization process, the longevity and durability of the steel rebar are significantly enhanced, rendering it highly resistant to rust and corrosion.

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