GB Standard HRB400 Steel Deformed Bar 18mm/20mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 50 m.t
- Supply Capability:
- 20000 m.t/month
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Steel Deformed Bar of GB Standard HRB400 Steel Deformed Bar 18mm/20mm
Description:
-Standard: GB
-Material: HRB400
-Specification:
| Diameter(mm) | Section Area(mm2) | Mass(Kg/m) | Length(m) |
| 18 | 254.5 | 2.00 | 9, 12 or as customs' request |
| 20 | 314.2 | 2.47 | 9, 12 or as customs' request |
Chemical Composition(%) of GB Standard HRB400 Steel Deformed Bar 18mm/20mm:
| C | Mn | Si | S | P | V |
| ≤0.25 | ≤1.60 | ≤0.08 | ≤0.045 | ≤0.045 | 0.04-0.12 |
Mechanical Properties of GB Standard HRB400 Steel Deformed Bar 18mm/20mm:
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) |
≥400 | ≥570 | ≥14 |
Usage and Applications of GB Standard HRB400 Steel Deformed Bar 18mm/20mm:
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 GB Standard HRB400 Steel Deformed Bar 18mm/20mm:
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
Images of GB Standard HRB400 Steel Deformed Bar 18mm/20mm:
*If you would like to get our price, please inform us the size, standard/material and quantity. Thank you very much for your attention.
- Q: How are steel rebars stored and handled on construction sites?
- Steel rebars, also referred to as reinforcing bars, play a vital role in construction projects that involve reinforced concrete structures. To guarantee their safety and effective utilization, these rebars are systematically and meticulously stored and managed on construction sites. Initially, steel rebars are typically delivered to construction sites bundled together and secured with wire or binding materials. Once unloaded from the delivery truck, they are carefully placed in specific areas called rebar yards or cages. These designated spaces are purposefully designed to accommodate the rebars' length, size, and weight, ensuring that they are elevated above the ground and shielded from moisture, dirt, and potential damage. Within the rebar yard, the rebars are commonly arranged horizontally and grouped based on their size, length, and grade. This arrangement enables easy identification and accessibility when required for construction purposes. Moreover, spacers or wooden blocks are often placed between the rebars to prevent direct contact, minimizing the risk of corrosion or entanglement. When it comes to handling steel rebars, construction workers must prioritize safety and adhere to specific guidelines. It is essential to wear personal protective equipment, such as gloves and safety boots, to prevent injuries and maintain a secure grip on the rebars. In certain cases, lifting equipment like cranes or forklifts may be utilized to move and transport the rebars to different areas of the construction site. During transportation, it is crucial to properly secure the rebars to prevent any shifting or falling that could result in accidents. Dragging the rebars on the ground should be avoided, as it can cause damage or deform their shape, compromising their structural integrity. It is of utmost importance to inspect steel rebars before use to ensure they meet the required specifications and are free from any defects. Rusty or damaged rebars should be either discarded or repaired, depending on the severity of the issue. In conclusion, steel rebars are stored and handled with great care and attention on construction sites. Proper storage in designated rebar yards, appropriate grouping and separation, and adherence to safety guidelines during handling are all crucial factors that contribute to the successful and efficient use of steel rebars in construction projects.
- Q: What are the different methods for cutting steel rebars on-site?
- There are several methods available for cutting steel rebars on-site, depending on the specific requirements and limitations of the project. Some of the common methods include: 1. Manual Cutting: This method involves using handheld manual tools such as rebar cutters or bolt cutters to cut through the steel rebars. It is suitable for smaller projects or areas where power tools may not be accessible. 2. Abrasive Cutting: Abrasive cutting, also known as grinding or cut-off saws, utilizes a high-speed rotating disc with abrasive particles to grind through the steel rebars. This method is effective for cutting rebars of various sizes and is commonly used in construction sites. 3. Torch Cutting: Using oxy-fuel or plasma torches, this method involves heating the steel rebars to a high temperature and then cutting through them using the intense heat. Torch cutting is suitable for thicker and larger rebars but requires caution and safety measures due to the open flame involved. 4. Shear Cutting: Shear cutting involves using hydraulic or mechanical shears to cut through the steel rebars. This method is efficient for cutting rebars quickly and accurately, especially for larger projects. 5. Hydraulic Cutting: Hydraulic cutters use hydraulic pumps to generate high pressure, which is then used to power the cutting blade. This method is commonly used for heavy-duty cutting tasks and can cut through thick rebars with ease. 6. Electric Cutting: Electric cutters, such as electric rebar cutters or portable band saws, are powered by electricity and provide a clean and precise cut. They are commonly used in construction sites where power is readily available. It is essential to consider the specific requirements of the project, including the size and thickness of the rebars, available power sources, and safety considerations, when selecting the appropriate method for cutting steel rebars on-site.
- Q: Can steel rebars be used in the construction of industrial facilities?
- Yes, steel rebars can definitely be used in the construction of industrial facilities. Steel rebars provide excellent strength and durability, making them ideal for reinforcing concrete structures in industrial settings where heavy loads and high stress conditions are common. Additionally, steel rebars are resistant to corrosion, which is crucial in industrial environments that may be exposed to moisture or chemicals. Overall, steel rebars are a popular and reliable choice for reinforcing industrial facilities.
- Q: How do steel rebars contribute to the fire resistance of concrete?
- Concrete's fire resistance is enhanced by steel rebars in several ways. Firstly, steel rebars possess a non-combustible nature and a high melting point, ensuring they do not burn or add fuel to fires. This characteristic aids in preventing the spread of fire and maintaining the concrete's structural stability during fire incidents. Additionally, steel rebars act as reinforcement within the concrete, boosting its overall strength and load-bearing capacity. This reinforcement effectively prevents cracking or fragmentation of the concrete under high temperatures caused by fire. The presence of steel rebars also enhances the concrete's ductility, enabling it to deform and absorb energy during fires, rather than abruptly shattering or collapsing. Moreover, steel's thermal conductivity surpasses that of concrete, enabling it to effectively conduct heat away from the fire zone. This assists in dissipating heat and preventing it from reaching critical levels that could compromise the concrete's structural integrity. By absorbing and distributing heat, steel rebars contribute to slowing down the temperature rise within the concrete during fires. In conclusion, steel rebars contribute to concrete's fire resistance by providing structural stability, improving strength and load-bearing capacity, enhancing ductility, and dissipating heat. These attributes make concrete structures reinforced with steel rebars more resilient, enabling them to withstand fires for extended periods. As a result, the safety of occupants is increased, and potential property damage is reduced.
- Q: How do steel rebars prevent cracking in concrete structures?
- Steel rebars prevent cracking in concrete structures by providing reinforcement and strength. When concrete is poured, it is initially strong in compression but weak in tension. The rebars, made of high-strength steel, are embedded in the concrete to counteract this weakness. They absorb the tensile forces that occur due to bending or stretching of the concrete, preventing it from cracking. The rebars distribute the stress evenly throughout the structure, increasing its overall strength and durability. Additionally, rebars help to control the width and extent of any cracks that may occur, ensuring that the concrete structure remains stable and safe.
- Q: Do steel rebars have any specific markings or codes?
- Yes, steel rebars typically have specific markings or codes to indicate their size, type, and grade. These markings are essential for identifying and ensuring the correct usage of rebars in construction projects.
- Q: Can steel rebars be used in industrial flooring?
- Industrial flooring can indeed incorporate steel rebars, as they possess remarkable tensile strength and durability. The incorporation of steel rebars in concrete construction, particularly in industrial flooring, is a widespread practice. These rebars are strategically positioned within the concrete to reinforce it and provide additional strength, enabling it to withstand heavy loads and prevent cracking. By utilizing steel rebars in industrial flooring, the capacity to bear weight is significantly augmented, and the floor's longevity and structural integrity are assured. Furthermore, steel rebars can be effortlessly welded or linked together to form a grid or mesh, further enhancing the floor's strength and stability. Hence, steel rebars are a suitable choice for industrial flooring applications.
- Q: How do steel rebars contribute to the energy efficiency of a building?
- There are several ways in which steel rebars contribute to the energy efficiency of a building. To begin with, they are used to reinforce concrete structures like beams, columns, and walls. This reinforcement enhances the building's structural integrity, enabling it to withstand different loads and forces. Consequently, the construction process requires fewer materials, resulting in a more energy-efficient building. Moreover, steel rebars possess exceptional thermal conductivity properties. This means they can effectively transfer and distribute heat throughout the building, aiding in regulating the internal temperature. By evenly dispersing heat, steel rebars help to minimize temperature fluctuations, thereby reducing the need for excessive heating or cooling systems and conserving energy. Furthermore, steel rebars have a lengthy lifespan and necessitate minimal upkeep. This durability ensures that the building remains structurally sound over time, decreasing the frequency of repairs or replacements. As a result, the energy consumed in maintenance and renovation activities is significantly reduced. Additionally, the use of steel rebars enables the construction of larger, open spaces with fewer supporting columns. This design flexibility allows for the incorporation of natural light and ventilation, reducing dependence on artificial lighting and air conditioning systems. By maximizing the utilization of natural resources, steel rebars contribute to the energy efficiency of the building. In conclusion, steel rebars play a crucial role in improving the energy efficiency of a building. Their ability to reinforce structures, efficient thermal conductivity, durability, and design flexibility all contribute to decreasing the energy consumption associated with the construction, maintenance, and operation of the building.
- Q: What is the maximum spacing allowed between steel rebars in concrete slabs?
- The maximum spacing allowed between steel rebars in concrete slabs typically depends on various factors such as the thickness of the slab, the load it will bear, and the design requirements. However, as a general guideline, the maximum spacing is often specified to be around 3 times the slab thickness or 18 inches (whichever is less) to ensure proper reinforcement and structural integrity.
- Q: How are steel rebars used in road and pavement construction?
- Steel rebars are used in road and pavement construction to reinforce the concrete structures and provide strength and durability to withstand heavy traffic loads and environmental conditions. They are typically placed within the concrete to prevent cracking and enhance the overall structural integrity, ensuring the longevity and stability of the roads and pavements.
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GB Standard HRB400 Steel Deformed Bar 18mm/20mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 50 m.t
- Supply Capability:
- 20000 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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