Concrete Reinforcing Steel Bar from 8mm to 40mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 1500 m.t./month
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Concrete Reinforcing Steel Bar from 8mm to 40mm
Main Structure of Concrete Reinforcing Steel Bar
Standard: AISI, ASTM, BS, DIN, GB
Grade: HRB400
Diameter: 6mm-10mm
Length: 1.6-1.9ton/coil
Application: for construction
rebar coil size: 6mm-10mm
steel grade: hrb400 , hrb500, gr.60 , hrb335,q235 q255 q275
Description for Concrete Reinforcing Steel Bar
Type | Coiled reinforced bar/rebar coil |
Steel Grade | hrb500, gr.60 ,q235 ,q255,q275 |
Size | 6mm-10mm |
Unit weight | 1.6-1.9tons/coil |
Application | Building/project construction |
Packing | In coil with steel strip ,in bulk . |
Datas for Concrete Reinforcing Steel Bar
HRB400 | Chemical Composition(%) | C | Mn | Si | P | S |
0.25max | 1.60max | 0.80max | 0.045max | 0.045max | ||
Mechanical Property | Yield Strength | Tensile Strenth | Elongation | |||
400Mpa min | 540Mpa min | 16% | ||||
HRB500 | Chemical Composition(%)
| C | Mn | Si | P | S |
0.25max | 1.60max | 0.80max | 0.045max | 0.045max | ||
Mechanical Property | Yield Strength | Tensile Strength | Elongation | |||
500Mpa min | 630Mpa min | 15% | ||||
HRB335 | Chemical Composition (%) | C | Mn | Si | P | S |
0.25max | 1.60max | 0.80max | 0.045max | 0.040max | ||
Mechanical Property | Yield Strength | Tensile strength | Elongation | |||
335Mpa min | 455Mpa min | 17% | ||||
FAQ
Q: Why should you choose us:
A: 1. More than 10 years experience in this industry
2. 100,000 tons exporting per month
3. Professional foreign trade tea
4. OEM&ODM capacity
5. High quality assured & competitive price
6. Try our best to meet your needs & save your budget
7. Very popular in Southeast Asia, Africa, Mid-East and South America etc.
8. VIP membership system, first time customers and long-term cooperation customers can get extra discount on some products.
12px; font-style: inherit; font-variant: inherit; font-weight: 400; line-height: inherit; float: none; word-wrap: break-word; color: rgb(0, 0, 0); border: 1px solid rgb(204, 204, 204);"> Elongation 335Mpa min 455Mpa min 17%
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- Q: How are steel rebars used in construction?
- Steel rebars are used in construction to reinforce concrete structures and provide them with increased strength and durability. They are embedded within the concrete to withstand tension forces and prevent cracking or collapsing, ensuring the structural integrity of buildings, bridges, and other infrastructure projects.
- Q: What is the recommended diameter of steel rebars for foundation reinforcement?
- The recommended diameter of steel rebars for foundation reinforcement typically ranges from 10mm to 32mm, depending on the size and load-bearing requirements of the specific foundation project.
- Q: How do steel rebars affect the overall fire resistance of concrete structures?
- Steel rebars can significantly improve the fire resistance of concrete structures. The high thermal conductivity of steel helps in dissipating heat away from the concrete, preventing rapid temperature rise and structural failure. Additionally, the presence of rebars enhances the load-bearing capacity of the structure during a fire, enabling it to withstand the intense heat for a longer duration before collapsing.
- Q: How are steel rebars anchored into existing concrete?
- Reinforcing existing concrete structures commonly involves the use of steel rebars. The process to anchor these rebars into the concrete consists of several steps. Firstly, preparation of the concrete surface is necessary. This typically includes cleaning the area where the rebar will be anchored in order to remove any dirt, debris, or loose concrete. Additionally, roughening the surface may be required to enhance adhesion. After the surface is prepared, a bonding agent such as epoxy or a cementitious grout is applied. This bonding agent facilitates a strong bond between the rebar and the concrete. Next, the steel rebar is positioned and inserted into the prepared area. The depth at which the rebar is inserted into the concrete depends on the required anchorage depth and design specifications. Alignment at the correct depth is essential, in accordance with the structural requirements. To ensure proper anchorage, it is often necessary to bend or hook the end of the rebar. This prevents the rebar from pulling out of the concrete under tension or external forces. Lastly, the bonding agent is left to cure as per the manufacturer's instructions. This allows it to harden and form a strong bond between the rebar and the concrete. It is important to note that the precise method of anchoring steel rebars into existing concrete may vary based on the specific application and design requirements. Additional reinforcement methods, such as mechanical anchors or post-installed anchors, may be utilized in certain cases to enhance anchorage strength. Expertise from professionals and adherence to engineering guidelines are crucial to ensure the proper and safe anchoring of steel rebars into existing concrete structures.
- Q: Are steel rebars resistant to extreme temperatures?
- Yes, steel rebars are generally resistant to extreme temperatures. Steel has a high melting point and can withstand both high and low temperatures without significant structural changes or loss of strength. However, extremely high temperatures can cause some degradation in the rebar's mechanical properties over time.
- Q: How do steel rebars affect the aesthetics of a construction project?
- Steel rebars, an essential element of reinforced concrete structures, have a significant influence on the aesthetics of construction projects. Although their primary purpose is to provide strength and reinforcement to concrete, their presence can have an impact on the overall appearance of the project. The visibility of steel rebars is one way they affect aesthetics. In infrastructure projects like bridges or parking garages, it is common to leave rebars exposed during construction. This exposure can create a distinct industrial or modern look that some find aesthetically pleasing. Architects and designers may intentionally embrace this raw and utilitarian appearance to achieve a specific aesthetic vision. However, in many architectural projects, particularly those involving residential or commercial buildings, the visibility of steel rebars is often undesirable. In such cases, rebars are typically concealed within the structure and covered with finishes such as concrete, plaster, or decorative cladding. This approach enhances the aesthetics of the construction project by shifting the focus from structural elements to the overall design and finishes. Furthermore, the placement and arrangement of rebars can also impact aesthetics. In intricate architectural designs, rebars must be precisely positioned to ensure the desired structural integrity. This presents challenges for designers as they strive to achieve functionality and visual appeal. However, with careful planning and coordination, rebars can be strategically placed to minimize their visual impact while maintaining the desired aesthetics of the project. It is important to note that aesthetics should never compromise the safety and structural integrity of a construction project. While efforts can be made to conceal or minimize the visual impact of steel rebars, proper installation and adherence to engineering standards must always take priority. Ultimately, the aesthetic impact of steel rebars on a construction project depends on the design intent, architectural style, and the balance between functionality and visual appeal.
- Q: How are steel rebars identified based on their grades?
- Steel rebars are classified according to their grades using a distinct marking system, which is essential for construction purposes. This system ensures that rebars are used correctly based on their strength requirements. Typically, the marking system for steel rebars involves numbers, letters, or symbols. The most common approach is to mark the rebar with numbers representing the minimum yield strength of the steel. For instance, a rebar with a grade of 40 will have "40" stamped on it, indicating a minimum yield strength of 40,000 psi. In addition to numerical markings, some rebars may also have letters or symbols providing more detailed information about their characteristics. These additional markings can include the type of steel (e.g., "A" for mild steel or "W" for weldable steel). Other symbols may indicate the rebar's country of origin or specific manufacturer details. It is important to note that different countries and regions may have their own unique marking systems and standards for identifying steel rebars. Therefore, it is crucial to consult local building codes or regulations to understand the specific grading system used in a particular area. Overall, the grade markings on steel rebars supply critical information about their strength and mechanical properties. This enables engineers, contractors, and construction workers to choose and utilize the appropriate rebars for diverse structural applications.
- Q: What is the process of installing steel rebars in slabs and beams?
- The process of installing steel rebars in slabs and beams involves several steps. Firstly, the design and layout of the rebars are determined based on the structural requirements. The rebars are then cut, bent, and shaped according to the specifications. Next, the concrete forms for the slabs and beams are prepared, ensuring they are clean and properly aligned. Once the forms are ready, the rebars are placed inside the forms in the desired positions, maintaining the required spacing and clearances as per the design. Proper support is provided to hold the rebars in place and prevent displacement during the concrete pouring process. After the rebars are correctly positioned, concrete is poured into the forms, covering the rebars entirely. During pouring, care is taken to ensure that the concrete adequately surrounds and encases the rebars, providing the necessary structural integrity. Finally, the concrete is allowed to cure and harden, creating a strong bond with the rebars. Once the concrete has fully cured, the forms are removed, and any excess concrete or debris is cleaned off the surface. Overall, the process of installing steel rebars in slabs and beams involves careful planning, precise positioning, and proper concrete placement to create a reinforced structure that can withstand the intended loads and stresses.
- Q: How do steel rebars prevent concrete structures from spalling?
- The reinforcement and increased strength provided by steel rebars prevent spalling in concrete structures. Spalling occurs when the concrete surface cracks and breaks off due to internal pressure from factors like temperature changes, moisture, or structural loads. When steel rebars are embedded in the concrete, they act as a support system that evenly distributes applied loads throughout the structure. This prevents localized stress concentrations, which can cause spalling, by absorbing and dissipating the load. By reinforcing the concrete, rebars enhance its ability to withstand external forces and improve its tensile strength. Furthermore, steel rebars help control crack formation in the concrete. Concrete is a brittle material with low tensile strength, making it prone to cracking under stress. However, rebars hinder crack propagation by bridging them and transferring the stress to the surrounding concrete. This prevents the cracks from spreading and results in a more durable and resilient structure. Additionally, steel rebars protect against corrosion. Concrete's natural alkalinity forms a protective layer on the steel surface, preventing rusting. This alkaline environment acts as a barrier against corrosion, ensuring the rebars maintain their structural integrity over time. By avoiding corrosion, the rebars can continue to reinforce the concrete and prevent spalling. In conclusion, steel rebars are essential in preventing spalling in concrete structures by providing reinforcement, improving tensile strength, controlling crack formation, and protecting against corrosion. They enhance the stability and durability of the concrete, allowing it to withstand external pressures and maintain its integrity for an extended period.
- Q: Can steel rebars be used for both residential and commercial constructions?
- Yes, steel rebars can be used for both residential and commercial constructions. Steel rebars are commonly used as reinforcement in concrete structures, providing strength and stability to the building. Whether it is a residential house or a commercial building, steel rebars are essential components in the construction process to ensure the durability and structural integrity of the structure.
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Concrete Reinforcing Steel Bar from 8mm to 40mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 1500 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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