Hot Rolled Steel Deformed Bar HRB400 HRB500 HRB600 for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 10000 m.t./month
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Product Description:
OKorder is offering Hot Rolled Steel Deformed Bar HRB400 HRB500 HRB600 for construction at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
Hot Rolled Steel Deformed Bar HRB400 HRB500 HRB600 for construction are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.
Product Advantages:
OKorder's Hot Rolled Steel Deformed Bar HRB400 HRB500 HRB600 for construction are durable, strong, and resist corrosion.
Main Product Features:
· Premium quality
· Prompt delivery & seaworthy packing (30 days after receiving deposit)
· Corrosion resistance
· Can be recycled and reused
· Mill test certification
· Professional Service
· Competitive pricing
Product Specifications:
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 | ||
Packaging & Delivery of Hot Rolled d-bar Steel
1. Packing: it is nude packed in bundles by steel wire rod
2. Bundle weight: not more than 3.5MT for bulk vessel; less than 3 MT for container load
3. Marks:
Color marking: There will be color marking on both end of the bundle for the cargo delivered by bulk vessel. That makes it easily to distinguish at the destination port.
Tag mark: there will be tag mark tied up on the bundles. The information usually including supplier logo and name, product name, made in China, shipping marks and other information request by the customer.
If loading by container the marking is not needed, but we will prepare it as customer request.
4. Transportation: the goods are delivered by truck from mill to loading port, the maximum quantity can be loaded is around 40MTs by each truck. If the order quantity cannot reach the full truck loaded, the transportation cost per ton will be little higher than full load.
5. Delivered by container or bulk vessel
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q5: Can stainless steel rust?
A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
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- Q: Can steel rebars be used in structures with high resistance to creep?
- Yes, steel rebars can be used in structures with high resistance to creep. Steel rebars are commonly used in reinforced concrete structures and provide strength and durability to the overall structure. Creep is the gradual deformation of a material under constant stress over time. While steel does exhibit some creep, it is considered to have a low creep rate compared to other materials such as concrete or timber. Additionally, the use of rebars in reinforced concrete structures can help distribute the load and minimize the effects of creep by adding stiffness and reducing the overall stress on the concrete. Therefore, steel rebars can be effectively used in structures with high resistance to creep when designed and installed properly.
- Q: How are steel rebars stored to prevent damage?
- To prevent damage, steel rebars are commonly stored in various ways. Firstly, they are typically kept in a clean and dry area that is protected from the elements. This safeguards against rust and corrosion, which can weaken the rebars over time. Moreover, rebars are often stored elevated off the ground, either on pallets or racks, to avoid contact with moisture and dirt. This not only makes them more accessible and easier to inspect but also eliminates the risk of damage. Additionally, bundling the rebars together and securely tying them with wire or bands ensures that they remain in place during storage and transportation. This prevents any unintentional movement or shifting that could potentially cause harm. Sometimes, a protective layer such as epoxy or plastic is applied to the rebars to create an extra barrier against moisture and other corrosive elements. Lastly, it is crucial to handle and transport rebars with caution to avoid accidental damage. Appropriate equipment, like cranes or forklifts, should be used to lift and move them, and workers should be trained in proper handling techniques to minimize the risk of bending, twisting, or other physical harm. Overall, storing steel rebars in a clean, dry area, elevated off the ground, securely bundled, and handled with care significantly reduces the risk of damage, ensuring that the rebars remain in optimal condition for their intended use in construction projects.
- Q: What are the factors to consider while designing a reinforced concrete structure with steel rebars?
- Designing a reinforced concrete structure with steel rebars requires careful consideration of various factors to ensure its strength, durability, and safety. Here are some key factors to consider: 1. Structural Requirements: The first step is to determine the specific purpose of the structure and its load-bearing capacity. This includes considering the intended use, maximum load, and any potential dynamic loads such as wind or earthquakes. 2. Material Selection: Choosing the right type and grade of concrete and steel rebars is crucial. The concrete mix should have adequate strength, workability, and durability to withstand the anticipated conditions. Similarly, the rebars should have sufficient yield strength and corrosion resistance to maintain structural integrity over time. 3. Reinforcement Layout: The design should include an appropriate layout and spacing of rebars to distribute the load uniformly and prevent cracking or structural failure. This involves determining the rebar size, quantity, and arrangement based on the calculated forces and bending moments. 4. Concrete Cover: The concrete cover refers to the thickness of concrete surrounding the rebars. It is crucial to provide adequate cover to protect the rebars from corrosion, fire, and other environmental factors. The cover thickness should be determined based on the exposure conditions and the required durability. 5. Bonding between Concrete and Rebars: Proper bonding between the concrete and rebars is essential for transferring forces effectively. The design should consider factors such as mechanical interlocking, chemical adhesion, and surface treatment to ensure a strong bond and prevent slippage or separation. 6. Construction Considerations: The design should account for practical construction aspects such as formwork, placement, and compaction of concrete. It should also incorporate appropriate detailing for construction joints, lap splices, and anchorage of rebars to ensure proper installation and ease of construction. 7. Serviceability and Durability: The design should address serviceability requirements such as deflection limits, cracking control, and long-term performance. Additionally, it should consider factors that impact durability, such as exposure to moisture, chemicals, temperature variations, and potential for corrosion. 8. Quality Control and Inspection: Quality control measures, including testing of materials, monitoring during construction, and inspection of completed work, are crucial to ensure that the design requirements are met. Regular inspections and adherence to construction standards and codes are essential for the overall integrity and safety of the structure. By considering these factors and following appropriate design codes and standards, a reinforced concrete structure with steel rebars can be designed to provide the desired strength, durability, and safety throughout its lifespan.
- Q: What is the role of steel rebars in reducing concrete creep?
- Steel rebars play a crucial role in reducing concrete creep. Concrete creep refers to the gradual deformation or movement of concrete over time under sustained loading. This phenomenon occurs due to the long-term effects of stress and environmental factors on the concrete structure. By incorporating steel rebars into concrete structures, the creep behavior of concrete is significantly reduced. Steel rebars are high-strength reinforcement bars that are embedded within the concrete to enhance its structural integrity and durability. They provide tensile strength to counteract the tensile stresses that can cause concrete to creep. When concrete is subjected to sustained loads, such as the weight of a building or a bridge, it experiences internal stresses that can lead to creep. However, the presence of steel rebars helps to distribute these stresses more evenly throughout the structure. The rebars act as a reinforcement, absorbing and redistributing the tensile forces, thus minimizing the deformation of the concrete. Additionally, steel rebars also improve the bond between concrete and the reinforcement. This bond is essential for transferring the tensile forces from the concrete to the rebars and ensuring that they work together as a composite material. The strong bond between concrete and rebars prevents the formation of cracks, which can further contribute to creep. Furthermore, steel rebars also enhance the overall stiffness and rigidity of the concrete structure. This increased stiffness helps to resist the deformation caused by creep, maintaining the integrity and stability of the structure over time. In summary, the role of steel rebars in reducing concrete creep is vital. They provide tensile strength, distribute internal stresses, improve the bond between concrete and reinforcement, and enhance the overall stiffness of the structure. By incorporating steel rebars, engineers can effectively mitigate the effects of creep and ensure the long-term performance and durability of concrete structures.
- Q: What are the common types of coatings applied to steel rebars for corrosion protection?
- The common types of coatings applied to steel rebars for corrosion protection include epoxy, zinc, and polyethylene.
- Q: What are the different types of steel rebars used in railway bridges?
- There are several types of steel rebars used in railway bridges, each with their own specific characteristics and applications. Some of the common types include: 1. Carbon Steel Rebars: These are the most commonly used rebars in railway bridges. They are made of carbon steel and provide high tensile strength and excellent durability. Carbon steel rebars can withstand heavy loads and are suitable for various railway bridge applications. 2. Stainless Steel Rebars: Stainless steel rebars are highly resistant to corrosion and are used in railway bridges located in coastal or high humidity areas. They offer excellent long-term performance and are particularly beneficial in preventing rust and deterioration caused by exposure to moisture and salt. 3. Galvanized Steel Rebars: Galvanized steel rebars are coated with a layer of zinc to enhance their corrosion resistance. They are commonly used in railway bridges in areas with aggressive environmental conditions, such as industrial zones or areas prone to chemical exposure. The zinc coating provides an additional protective barrier, increasing the rebars' lifespan. 4. Epoxy-Coated Steel Rebars: Epoxy-coated rebars are coated with a layer of epoxy resin, providing enhanced corrosion protection. They are commonly used in railway bridges exposed to harsh environments, such as bridges located near chemical plants or in heavily polluted areas. The epoxy coating acts as a barrier against corrosion and extends the rebars' service life. 5. Prestressed Steel Rebars: Prestressed steel rebars are designed to withstand high tension loads. They are used in railway bridges that require additional strength and stability, particularly in areas with heavy train traffic or where long spans need to be covered. Prestressed rebars are tensioned before the concrete is poured, allowing them to counteract the tensile forces and prevent cracking or deformation. These are just a few examples of the different types of steel rebars used in railway bridges. The choice of rebar type depends on various factors, including the environmental conditions, load requirements, and design specifications of the bridge. It is essential to select the appropriate type of rebar to ensure the structural integrity and longevity of railway bridges.
- Q: What are the factors to consider while selecting steel rebars for a construction project?
- Some factors to consider while selecting steel rebars for a construction project include the grade of steel, corrosion resistance, strength requirements, size and shape of rebars, availability and cost, compliance with building codes and regulations, and the specific needs of the project such as seismic resistance or durability.
- Q: Can steel rebars be used in historical monument conservation?
- Yes, steel rebars can be used in historical monument conservation. They can be used to reinforce and strengthen the structures of historical monuments, ensuring their long-term stability and preservation. However, it is important to use appropriate and compatible materials to maintain the authenticity and historical integrity of the monument. Proper planning, expertise, and consultation with conservation experts are crucial in determining the best approach for incorporating steel rebars in historical monument conservation.
- Q: What are the guidelines for installing steel rebars in concrete columns?
- To ensure the structural integrity and durability of concrete columns, there are several important considerations to be made when installing steel rebars. Here are some guidelines to follow: 1. Reinforcement design: Begin by creating a proper reinforcement design that specifies the rebars' size, length, and spacing. This design should be prepared by a qualified engineer or consultant, keeping in mind the load-bearing requirements of the column and the structural design standards. 2. Rebar preparation: Before installation, thoroughly clean the steel rebars to eliminate any rust, oil, or other contaminants that could hinder the bond between the rebar and the concrete. Additionally, cut and bend the rebars' ends correctly according to the reinforcement design. 3. Placement: Accurately position the rebars as specified in the reinforcement design. They should be placed in the center of the column and secured to maintain the required spacing and alignment. Avoid allowing the rebars to touch the formwork or be placed too close to the edges of the column. 4. Splicing: If the height of the column exceeds the length of the rebar, splicing becomes necessary. Follow approved methods such as lap splicing, mechanical couplers, or welded splices. Ensure the spliced rebars have sufficient overlap length and provide a continuous load path. 5. Tying: Properly tying the rebars is crucial to maintain their position during concrete pouring. Use binding wire or other approved tying methods to securely tie the rebars at the intersections. The ties should be tight enough to prevent displacement but not so tight as to damage the rebars. 6. Concrete pouring: Once the rebars are installed, pour the concrete into the formwork, completely surrounding the rebars. Take care to avoid segregation or honeycombing in the concrete, as this can compromise the bond between the rebars and the concrete. 7. Concrete cover: The reinforcement design will specify the required concrete cover over the rebars. This cover protects the rebars from corrosion and provides fire resistance. It is crucial to maintain the specified concrete cover throughout the height of the column and ensure it is not compromised during construction. 8. Quality control: Regularly inspect and implement quality control measures during the installation process. This includes checking the alignment, spacing, and cover of the reinforcement, as well as verifying the use of proper tying methods and splicing techniques. By following these guidelines, you can effectively install steel rebars in concrete columns, ensuring their structural strength and durability. Remember to adhere to local building codes and standards and seek professional advice if necessary to ensure the proper installation of rebars in concrete columns.
- Q: What are the standards and specifications for steel rebars?
- The standards and specifications for steel rebars, which are also known as reinforcing bars, are primarily set by international organizations such as the American Society for Testing and Materials (ASTM) and the International Organization for Standardization (ISO). These standards ensure that steel rebars meet specific requirements for strength, durability, and dimensional accuracy. One of the most widely used standards for steel rebars is ASTM A615, which covers deformed and plain carbon-steel bars for concrete reinforcement. This standard specifies the minimum yield strength, tensile strength, and elongation properties for different grades of rebars, such as Grade 40, Grade 60, and Grade 75. It also outlines the requirements for the mechanical properties, chemical composition, and bending properties of rebars. In addition to ASTM A615, there are other standards that provide specifications for steel rebars. ASTM A706, for instance, focuses on low-alloy steel bars for concrete reinforcement. This standard ensures that rebars have enhanced weldability and ductility to withstand seismic forces and other dynamic loads. ISO 15630 is another significant standard that covers steel for the reinforcement of concrete. It provides specifications for hot-rolled and cold-worked steel bars, as well as welded fabric and lattice girders. ISO 15630 outlines the requirements for the mechanical properties, chemical composition, and dimensional tolerances of rebars. Moreover, regional or national organizations also establish their own standards for steel rebars. For example, the British Standards Institution (BSI) has developed the BS 4449 standard, which specifies the requirements for carbon steel rebars for concrete reinforcement in the United Kingdom. Similarly, the Indian Standards Institute (ISI) has set the IS 1786 standard for cold-twisted steel bars for concrete reinforcement in India. Overall, the standards and specifications for steel rebars ensure that these construction materials possess the necessary strength, ductility, and other properties required for reinforcing concrete structures. By adhering to these standards, manufacturers, engineers, and construction professionals can ensure the safety and durability of reinforced concrete projects.
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Hot Rolled Steel Deformed Bar HRB400 HRB500 HRB600 for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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