Hot Rolled Steel Rebar, Deformed Steel Bar, D-BAR
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 35000 m.t./month
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OKorder Financial Service
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Product Description:
OKorder is offering Hot Rolled Steel Rebar, Deformed Steel Bar, D-BAR 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 Rebar, Deformed Steel Bar, D-BAR 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 Rebar, Deformed Steel Bar, D-BAR 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:
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 |
Packaging & Delivery of Hot Rolled Steel Rebar, Deformed Steel Bar, D-BAR
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: How do steel rebars resist corrosion?
- Passivation is the process by which steel rebars resist corrosion. When exposed to air and moisture, a thin layer of iron oxide is formed on the surface of the steel. This layer, commonly known as rust, acts as a protective barrier, preventing oxygen and moisture from reaching the inner layers of steel and halting further oxidation. To provide an additional layer of protection against corrosion, steel rebars are often coated with materials like epoxy or zinc. These coatings create a physical barrier, shielding the steel from the corrosive elements of the environment. Regular maintenance, which includes cleaning and applying protective coatings, can also contribute to prolonging the lifespan of steel rebars and preventing corrosion.
- Q: What is the typical weight of a steel rebar?
- The typical weight of a steel rebar varies depending on its size and length. However, a commonly used steel rebar, such as a #4 rebar, typically weighs around 9.5 pounds per foot or 14.2 kilograms per meter.
- Q: How do steel rebars contribute to the overall seismic performance of a structure?
- Steel rebars contribute to the overall seismic performance of a structure by providing strength, ductility, and reinforcement. They help to absorb and distribute the energy generated during an earthquake, reducing the risk of structural failure. By reinforcing concrete and enhancing its tensile strength, rebars enable the structure to withstand the lateral forces and ground motion caused by seismic activity. This reinforcement increases the overall resilience and safety of the building, minimizing the potential for damage and ensuring the structure's stability during an earthquake.
- Q: What are the maintenance requirements for steel rebars in a structure?
- To ensure the stability and longevity of a building, it is crucial to consider the maintenance requirements for steel rebars in its structure. Steel rebars, also referred to as reinforcing bars, are utilized to strengthen concrete structures and withstand tension forces. Here are some important maintenance requirements to bear in mind: 1. Conducting Visual Inspections: Qualified personnel with knowledge and experience in recognizing structural issues should regularly perform visual inspections to identify any signs of corrosion, cracks, or damage in the rebars. 2. Keeping the Rebars Clean: It is necessary to keep the rebars free from debris, dirt, or chemicals that could accelerate corrosion. Employing proper cleaning methods, such as mild detergents and water, is essential to maintain their condition. 3. Protecting Against Corrosion: Steel rebars are prone to corrosion, particularly in environments with high humidity, exposure to saltwater, or chemical pollutants. Applying protective coatings like epoxy or zinc can help prevent or delay corrosion, thereby increasing the lifespan of the rebars. 4. Prompt Repair or Replacement: In the event of severe corrosion, cracks, or damage to any rebars, it is crucial to promptly repair or replace them. Neglecting these issues can compromise the structural integrity of the building and pose safety hazards. 5. Continuous Monitoring: It is advisable to continuously monitor the condition of the rebars to detect any changes or deterioration over time. Advanced techniques such as ultrasonic testing or electrical potential measurements can be utilized to assess the rebars' integrity. 6. Ensuring Proper Drainage: The structure should have proper drainage systems in place to prevent water accumulation and reduce the risk of corrosion in the rebars. Well-designed and well-maintained gutters, downspouts, and waterproofing measures can minimize water exposure. 7. Establishing a Regular Maintenance Schedule: It is crucial to establish a regular maintenance schedule to systematically conduct all necessary inspections, cleaning, and repairs. This aids in early identification of potential issues and enables prompt corrective actions. By adhering to these maintenance requirements, the steel rebars in a structure can be preserved, contributing to the overall safety, durability, and longevity of the building. Regular maintenance not only prevents costly repairs but also ensures the necessary structural integrity for the safety of occupants and the longevity of the structure.
- Q: Can steel rebars be used in water storage tanks?
- Yes, steel rebars can be used in water storage tanks. Steel rebars provide structural strength and reinforcement to the tanks, making them suitable for holding and retaining water.
- Q: Is the finish steel 3 grade steel?
- The mechanical properties of finishing rolling rebar with GB/T "20065-2006" thread steel bar for prestressed concrete, the prestressed concrete rebar (also known as the finishing rolling rebar, hereinafter referred to as reinforced) the terms and definitions, strength grade, size, shape, weight and tolerances, technical requirements, test method, inspection rules, packaging, mark and quality certificate. The standard applies to the use of hot rolling, after rolling waste heat treatment or heat treatment processes such as the production of prestressed concrete rebar.
- Q: How do steel rebars improve the ductility of concrete?
- Concrete's ductility is enhanced by steel rebars in several ways. Firstly, the distribution and dissipation of stress throughout the concrete structure is facilitated by the presence of rebars. This prevents the concentration of loads in specific areas, thus preventing cracks or fractures and improving overall ductility. Secondly, when concrete undergoes tension or bending forces, rebars act as reinforcement to resist these forces. The tensile strength of steel rebars is higher compared to concrete, which is weak in tension. This reinforcement allows concrete to withstand higher tensile stresses without breaking, thereby increasing ductility. Furthermore, the bond between steel rebars and the concrete matrix plays a crucial role in improving ductility. The rough surface of rebars provides better adhesion with the surrounding concrete, increasing stress transfer between the two materials. This bond ensures that rebars do not slip out of the concrete during deformation, maintaining structural integrity and enhancing the ductility of the composite material. Additionally, the presence of steel rebars contributes to the post-cracking behavior of concrete. When cracks develop under high loads, rebars help hold the concrete together and prevent further crack propagation. This post-cracking behavior enables concrete to maintain its load-bearing capacity even in a damaged state, thereby improving overall ductility. In conclusion, steel rebars improve concrete's ductility by distributing stress, resisting tension and bending forces, enhancing the bond between concrete and rebars, and providing post-cracking reinforcement. These combined effects result in a more flexible and durable concrete structure capable of withstanding deformation without catastrophic failure.
- Q: What are the guidelines for using steel rebars in pre-stressed or post-tensioned concrete elements?
- The guidelines for using steel rebars in pre-stressed or post-tensioned concrete elements involve several key considerations to ensure structural integrity and performance. 1. Design and Engineering: The first step is to consult with a qualified structural engineer who specializes in pre-stressed or post-tensioned concrete design. They will determine the appropriate size, spacing, and type of rebars required for the specific project based on the structural loads, design requirements, and desired performance. 2. Material Selection: The rebars used in pre-stressed or post-tensioned concrete elements should conform to the relevant industry standards, such as ASTM A615 or ASTM A706 for reinforcing steel. The rebars should have sufficient strength, ductility, and corrosion resistance to withstand the stresses and environmental conditions. 3. Placement and Anchorage: The rebars need to be accurately placed and anchored within the concrete elements. The specific placement and anchorage requirements will depend on the project's design and engineering specifications. The rebars should be properly aligned and secured to ensure effective transfer of forces to the concrete. 4. Tensioning Process: For pre-stressed concrete elements, the rebars are tensioned before the concrete is poured. This process involves applying a predetermined amount of force to the rebars using specialized jacks or hydraulic systems. The tensioning force should be carefully controlled to achieve the desired amount of pre-stress and avoid overloading the rebars or damaging the concrete. 5. Post-Tensioning: In the case of post-tensioned concrete elements, the rebars are tensioned after the concrete has hardened. This is typically done by passing the rebars through ducts or sleeves within the concrete and applying tension using hydraulic jacks. The post-tensioning force should be carefully calibrated to achieve the desired structural performance and avoid excessive strain on the rebars or the concrete. 6. Quality Control and Inspection: Throughout the construction process, regular quality control and inspection should be carried out to ensure compliance with design specifications and industry standards. This includes verifying the correct placement, alignment, and tensioning of the rebars, as well as checking for any defects or damage. 7. Maintenance and Durability: To ensure the long-term durability and performance of pre-stressed or post-tensioned concrete elements, proper maintenance is crucial. This may involve periodic inspections, maintenance of protective coatings, and addressing any signs of corrosion or deterioration promptly. By following these guidelines, construction professionals can ensure the safe and effective use of steel rebars in pre-stressed or post-tensioned concrete elements, resulting in structurally sound and durable concrete structures.
- Q: What is the role of steel rebars in preventing concrete cracking?
- Steel rebars play a crucial role in preventing concrete cracking by providing reinforcement and enhancing the overall strength and durability of concrete structures. When concrete undergoes tensile stress, it tends to crack due to its low tensile strength. However, steel rebars, which are typically embedded within the concrete, act as a reinforcement by absorbing and distributing these tensile forces throughout the structure. The presence of steel rebars in concrete helps to counteract the natural tendency of concrete to crack under tension. When a load is applied to the concrete, the rebars bear a significant portion of the tensile stress, preventing it from being solely concentrated on the concrete matrix. This distribution of forces helps to minimize the formation and propagation of cracks, ensuring the structural integrity of the concrete. Moreover, steel rebars also contribute to the overall strength and durability of concrete structures. The combination of steel's high tensile strength and concrete's compressive strength results in reinforced concrete, which exhibits superior resistance to various external forces such as bending, shear, and seismic loads. This added strength makes the concrete less susceptible to cracking and enhances its ability to withstand heavy loads and environmental factors over time. In summary, steel rebars play a crucial role in preventing concrete cracking by providing reinforcement, absorbing and distributing tensile forces, and enhancing the overall strength and durability of concrete structures. Their presence significantly improves the structural integrity and longevity of concrete, making it a reliable and widely used construction material.
- Q: Are steel rebars compatible with other construction materials?
- Yes, steel rebars are compatible with other construction materials. They are commonly used in conjunction with concrete to reinforce structures and provide additional strength and durability. Steel rebars can also be used with other materials such as wood, masonry, or composite materials, depending on the specific construction project requirements.
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Hot Rolled Steel Rebar, Deformed Steel Bar, D-BAR
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 35000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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