Iron rods for construction concrete for building metal
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 17497 m.t./month
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Specification
bars of steel commonly used in construction, especially for reinforcing concrete structures such as driveways,
foundations, walls, and columns. These bars come in different sizes and strength grades, and can be smooth
or may include deformations that provide greater adhesion for concrete poured over the bars. When used in poured
concrete, the bars are typically placed in a grid pattern, the concrete poured over them, and then readjusted to
maintain the proper shape while the concrete sets. Steel rebar can be purchased from a number of manufacturers
and is often found at construction retailers or large hardware stores
Product Description :
Chemical composition (%): | Steel | C | Si | Mn | P | S | Ceq | ||||
HRB335 |
0.25 |
0.80 |
1.60 |
0.045 |
0.045 | 0.52 | |||||
HRB400 | 0.54 | ||||||||||
HRB500 | 0.55 | ||||||||||
Mechanical properties | Steel | Rel/ MPa | Rm/ MPa | A/ % | Agt/ % | ||||||
≥ | |||||||||||
HRB335 | 335 | 455 | 17 |
7.5 | |||||||
HRB400 | 400 | 540 | 16 | ||||||||
HRB500 | 500 | 630 | 15 | ||||||||
Package: | Standard export packing or as customer's request | ||||||||||
Application: | Construction, building, bridge, road. ect | ||||||||||
Payment terms | 1).100% irrevocable L/C at sight. | ||||||||||
Delivery time | 15-30 days after receipt of L/C or deposit by T/T | ||||||||||
Features
1、Pure steel quality, stable chemical contents, small tolerance.
2、Constant Quality, good drawing performance.
3、High dimension accuracy degree, accuracy degree of Level C up to 80%, smooth surface, less scale, easy to be pickled.
4、Automatic bundling with 4 lines by Machine in tidy and good looks
5、Big high quality percentage, small coil percentage, and heavy coil weight for Hard Coil.
6、High sorbitizing percentage.
Packing:
In bundles, each bundle weight 3.5 tons. Load by container or by bulk verssel.
FAQ:
1.Q: What's your MOQ(minimum order quantity)?
A: One full container, mixed acceptable .
2. Q: What's your packing methods?
A: Packed in bundle or bulk ..
3. Q: How can I buy CNBM products in my country?
A:Please send us an inquiry or email ,we will reply to you if there is distributor in your country
4. Q: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
5. Q: How long does it take to get the product if i place an order?
A:With the process of your requirements,we will pack and deliver in 3-7 days. If it is by sea shipment,it will take 15-45 days depending on different locations
- Q: Can steel rebars be used in other applications besides construction?
- Indeed, steel rebars can be utilized in applications beyond construction. Although their main purpose is to reinforce concrete structures and provide them with added strength and durability, their properties and characteristics make them suitable for diverse applications. One such application is in the manufacturing of bridges and highways. Steel rebars are commonly employed in the construction of bridge decks and highway pavements, enhancing their load-bearing capacity and resistance to cracking. Another application is in the automotive industry. Steel rebars can be used to manufacture car frames and chassis, improving the structural integrity and safety of vehicles. Furthermore, steel rebars can be utilized in the production of various types of machinery and equipment that require high strength and durability. This can include industrial machinery, agricultural equipment, and even appliances. Additionally, due to their malleability and ability to hold intricate shapes, steel rebars can also be employed in the production of sculptures and artworks. To conclude, although steel rebars are primarily used in construction, their properties enable them to be versatile and applicable in various other industries and contexts.
- Q: How do steel rebars affect the thermal conductivity of a structure?
- Steel rebars can significantly affect the thermal conductivity of a structure. The thermal conductivity of steel is much higher than that of other construction materials such as concrete. When steel rebars are embedded within concrete structures, they create a path for heat to flow more easily through the structure. This increased thermal conductivity can have both positive and negative effects. On the positive side, the presence of steel rebars allows for efficient transfer of heat, which can be beneficial in certain applications. For example, in structures that require heating or cooling, such as buildings with HVAC systems, the steel rebars can assist in distributing the desired temperature more evenly throughout the structure. However, the increased thermal conductivity can also have negative consequences. In buildings where thermal insulation is crucial, such as those in extreme climates, the presence of steel rebars can lead to higher heat loss or gain. This can result in increased energy consumption and higher heating or cooling costs. To mitigate these negative effects, various insulation techniques can be applied to reduce the heat transfer through the steel rebars. One common practice is to add insulation layers around the rebars or to use materials with lower thermal conductivity for the concrete mix. These measures help to minimize the impact of the steel rebars on the overall thermal conductivity of the structure. In summary, steel rebars have a significant influence on the thermal conductivity of a structure. While they can enhance heat distribution in some cases, they can also contribute to increased energy consumption and heat loss. Proper insulation techniques should be implemented to minimize these negative effects and optimize the thermal performance of the structure.
- Q: What is the quality difference between round bar and screw steel?
- Different grades of steel (different chemical composition). Round steel (HPB235) is carbon steel, steel is Q235; thread steel is low alloy steel; HRB335 grade steel is 20MnSi (20 manganese silicon); HRB400 grade steel bars are 20MnSiV or 20MnSiNb or 20MnTi etc.;
- Q: Can steel rebars be used in marine construction projects?
- Yes, steel rebars can be used in marine construction projects. They are commonly used to reinforce concrete structures in marine environments due to their high strength, durability, and resistance to corrosion. However, it is important to use corrosion-resistant steel rebars or apply protective coatings to prevent rusting and maintain the structural integrity of the project.
- Q: What are the potential drawbacks of using steel rebars?
- One potential drawback of using steel rebars is their susceptibility to corrosion. When exposed to moisture and certain environmental conditions, steel rebars can rust over time, leading to structural damage and reduced strength. Additionally, steel rebars are prone to thermal expansion and contraction, which can cause cracking or displacement in concrete structures. Lastly, the high cost of steel rebars compared to alternative materials might pose a financial drawback for construction projects on a tight budget.
- Q: What are the different types of coatings available for steel rebars?
- There are several types of coatings available for steel rebars, including epoxy, galvanized, and black oxide coatings. Each type of coating provides different levels of protection against corrosion and helps to extend the lifespan of the rebars in various environments.
- Q: How do steel rebars affect the crack width in reinforced concrete?
- Steel rebars play a crucial role in controlling and minimizing the crack width in reinforced concrete structures. The primary function of steel rebars is to provide tensile strength to the concrete, as concrete alone is weak in tension. When a load is applied to the reinforced concrete, the steel rebars resist the tensile forces, preventing cracks from widening. The presence of steel rebars helps distribute the stress and strain more evenly throughout the concrete. As a result, the cracks that may occur due to external loads or shrinkage are confined and their width is limited. The rebars act as reinforcement, inhibiting the propagation of cracks and reducing their width. This is especially important in structural elements such as beams and columns, where crack control is critical for maintaining the integrity and durability of the structure. The diameter, spacing, and arrangement of the rebars also influence the crack width in reinforced concrete. Properly designed and placed rebars provide optimal crack control. As the diameter and spacing of the rebars decrease, the crack width decreases as well. Additionally, the arrangement of rebars in a specific pattern, such as using a mesh or a grid, can further enhance crack control by providing additional resistance to crack propagation. Moreover, the bond between steel rebars and concrete is essential in crack width control. Adequate bond strength ensures that the rebars effectively transfer stress to the concrete, limiting crack width. Insufficient bond can lead to slip between the steel rebars and the concrete, allowing cracks to widen. In summary, steel rebars significantly affect crack width in reinforced concrete by providing tensile strength, distributing stress and strain, confining cracks, and enhancing the bond between the steel and concrete. Proper design, placement, and arrangement of rebars are crucial for effective crack control, improving the overall performance and longevity of reinforced concrete structures.
- Q: How are steel rebars handled and stored on construction sites?
- Steel rebars are typically handled and stored on construction sites by being stacked horizontally in designated areas. They are often separated by size, type, and grade to ensure easy accessibility and organization. Additionally, rebars are often lifted and moved using cranes, forklifts, or manual labor, taking necessary safety precautions. Proper storage and handling of rebars is crucial to prevent damage, rusting, and maintain their structural integrity for construction purposes.
- Q: Can steel rebars be used in precast concrete walls?
- Yes, steel rebars can be used in precast concrete walls. In fact, they are commonly used to reinforce the concrete and provide strength and durability to the structure. The rebars are typically placed within the precast panels during the manufacturing process to enhance their load-bearing capacity and resistance to cracking or breaking.
- Q: How are steel rebars different from steel mesh?
- Steel rebars and steel mesh are both reinforcing materials used in construction, but they differ in terms of their shape, size, and application. Steel rebars are long, cylindrical bars typically made of carbon steel and are used to provide tensile strength and stability to concrete structures, such as beams, columns, and foundations. On the other hand, steel mesh consists of a grid-like pattern of interconnected steel wires and is used primarily to reinforce concrete slabs, walls, and other flat surfaces. While rebars are primarily used to resist tension, steel mesh distributes loads evenly and helps prevent cracking and shrinkage in concrete.
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Iron rods for construction concrete for building metal
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 17497 m.t./month
OKorder Service Pledge
OKorder Financial Service
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