Deformed Steel Bar HRB400
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Product Description:
OKorder is offering Deformed Steel Bar HRB400 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.
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 | ||
Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)
Grade | Technical data of the original chemical composition (%) | ||||||
C | Mn | Si | S | P | V | ||
HRB400 | ≤0.25 | ≤1.60 | ≤0.80 | ≤0.045 | ≤0.045 | 0.04-0.12 | |
Physical capability | |||||||
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) | |||||
≥400 | ≥570 | ≥14 | |||||
Theoretical weight and section area of each diameter as below for your information:
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 |
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 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
Product Applications:
Deformed Steel Bar HRB400 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 Deformed Steel Bar HRB400 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
Product Specifications:
Standard: GB
Material: Q235
Origin place: China
FAQ:
Q1: Can stainless steel rust?
A1: 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.
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.
bdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
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- Q: How are steel rebars used in elevator shafts?
- Steel rebars are used in elevator shafts to reinforce the concrete structures and provide strength and stability to the shaft walls. The rebars are typically placed vertically and horizontally within the concrete walls to enhance their load-bearing capacity and prevent any potential structural damage.
- Q: How do steel rebars affect the overall thermal stability of a structure?
- The thermal conductivity properties of steel rebars can have a significant impact on the overall thermal stability of a structure. Thermal stability refers to a structure's ability to withstand temperature changes without deformation or damage. Steel rebars possess high thermal conductivity, enabling efficient heat transfer throughout a structure. This characteristic can have positive and negative effects on thermal stability. On the positive side, steel rebars aid in dissipating heat from the structure, preventing heat concentration in specific areas. This prevents localized thermal expansion, which could result in cracks and structural failures. By evenly distributing heat, steel rebars enhance the overall thermal stability. However, steel rebars can also transfer heat to colder areas of the structure, creating thermal gradients. This can cause differential expansion and contraction, leading to stress and potential damage. Additionally, during fire incidents, steel rebars can rapidly heat up and transfer heat to the surrounding concrete, compromising the structure's stability. To mitigate these potential negative effects, engineers and architects must carefully consider the placement, spacing, and design of steel rebars. Proper reinforcement layout and the use of insulation materials can enhance thermal stability. Furthermore, incorporating fire-resistant coatings or insulation around rebars can minimize heat transfer during fires. In conclusion, steel rebars significantly impact the thermal stability of structures. While their high thermal conductivity aids in heat dissipation, it can also lead to thermal gradients and potential damage. By carefully considering design and implementing appropriate measures, the negative effects of steel rebars on thermal stability can be minimized, ensuring the long-term durability and safety of the structure.
- Q: What is the difference between steel rebars and FRP rebars?
- Construction projects use steel rebars and FRP rebars as reinforcement materials, but they differ in composition and mechanical properties. Steel rebars, made of carbon steel, are known for their strength and durability, making them a reliable choice for reinforcing concrete structures. On the other hand, FRP rebars are composed of fibers embedded in a polymer matrix, such as glass or carbon. This composite material offers advantages over steel rebars. Firstly, FRP rebars are lighter, making them easier to handle and transport, reducing labor and equipment costs. Secondly, FRP rebars do not corrode, unlike steel rebars. Steel rebars are prone to corrosion when exposed to moisture and chemicals, weakening the structure over time. FRP rebars, however, are resistant to rust and corrosion, making them ideal for environments with high humidity, saltwater, or chemical exposure. Additionally, FRP rebars have a high resistance to electromagnetic fields, making them suitable for sensitive areas like hospitals, power plants, or telecommunication facilities, where minimizing electromagnetic interference is crucial. However, FRP rebars have lower tensile strength compared to steel rebars, making them less suitable for heavy-load-bearing structures. Moreover, FRP rebars initially cost more than steel rebars, but their long-term durability and reduced maintenance requirements can offset this expense. In conclusion, the differences between steel rebars and FRP rebars lie in their composition, mechanical properties, and performance in various environmental conditions. Steel rebars offer high tensile strength but are susceptible to corrosion, while FRP rebars are lighter, non-corrosive, and have a high resistance to electromagnetic fields. The choice between the two depends on project requirements, load-bearing needs, and environmental factors.
- 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: What are the different types of steel rebars used in foundation constructions?
- Foundation constructions commonly utilize various types of steel rebars, each possessing distinct properties and advantages. These rebars cater to different construction needs and offer unique benefits. 1. Mild Steel Rebars, or black bars, are crafted from carbon steel and boast a low carbon content. They find extensive use due to their cost-effectiveness and versatility. Mild steel rebars are suitable for most general construction ventures, providing commendable strength and durability. 2. High-strength Deformed Steel Rebars (HSD) exhibit a higher tensile strength in comparison to mild steel rebars. Manufactured by subjecting the steel to high temperatures and twisting it, these rebars possess a deformed surface that fosters excellent concrete bonding. HSD rebars are frequently employed in robust structures requiring elevated strength, such as tall buildings and bridges. 3. Epoxy-Coated Rebars undergo a protective epoxy resin coating to combat corrosion. The epoxy coating acts as a barrier, shielding the steel from moisture and chemicals that lead to rusting. These rebars are commonly implemented in regions with high humidity or exposure to corrosive elements, such as coastal areas. 4. Stainless Steel Rebars, composed of corrosion-resistant stainless steel comprising chromium and nickel, exhibit remarkable resistance to corrosion. Consequently, they prove ideal for structures exposed to hostile environments or chemicals. Marine constructions, wastewater treatment plants, and regions with high chloride content frequently employ stainless steel rebars. 5. Galvanized Rebars possess a zinc coating, providing corrosion protection. The zinc coating functions as a sacrificial layer, corroding instead of the steel rebars. Galvanized rebars find wide application in areas with high humidity or chemical exposure, such as industrial buildings, parking garages, and highway structures. 6. Welded Wire Mesh, although not a conventional rebar, is frequently employed in foundation constructions. Comprising interconnected steel wires welded together in a mesh grid, this mesh offers reinforcement and facilitates even load distribution across the foundation. It is commonly utilized in slabs, foundations, and retaining walls. Ultimately, the selection of steel rebars for foundation constructions hinges upon factors such as project requirements, environmental conditions, and budgetary limitations. It is imperative to consider the specific demands of the construction project and consult structural engineers to determine the most suitable type of steel rebars, ensuring a sturdy and enduring foundation.
- Q: Can steel rebars be used in the construction of shopping complexes?
- Shopping complexes can indeed utilize steel rebars in their construction. These rebars are frequently employed as reinforcement in concrete structures, including shopping complexes, owing to their exceptional strength and capacity to bear heavy loads. By providing structural integrity, they bolster the overall robustness and longevity of the building. Furthermore, steel rebars possess corrosion resistance, a vital attribute for structures such as shopping complexes that face diverse weather conditions and extensive foot traffic. Additionally, the utilization of steel rebars permits flexibility in design and construction, empowering architects and engineers to fashion intricate and distinctive structures. In summary, steel rebars are a dependable and extensively utilized material for reinforcing concrete in the construction of shopping complexes.
- Q: How are steel rebars inspected for quality on construction sites?
- In construction projects, steel rebars play a critical role by providing reinforcement and strength to concrete structures. It is crucial to ensure the quality of steel rebars in order to guarantee the safety and durability of the overall construction. To inspect the quality of steel rebars on construction sites, various methods are commonly used. The first and most basic method of quality inspection is visual examination. This involves visually inspecting the rebars for any visible defects such as cracks, deformations, rust, or surface irregularities. Any rebars with such flaws are immediately identified and rejected. Another method involves measuring and checking the dimensions of the rebars. Inspection personnel use measuring tools like calipers or tape measures to verify the length, diameter, and other dimensions of the rebars. Any deviation from the specified tolerances may result in rejection. Magnetic Particle Testing (MPT) is a non-destructive testing method that is commonly employed to detect surface and near-surface defects in steel rebars. In this technique, the rebar is magnetized and ferromagnetic particles are applied, which accumulate at any surface defects or cracks. Trained inspectors carefully examine the surface to identify any areas of concern. Ultrasonic Testing (UT) is another non-destructive testing method used for inspecting rebars. It involves transmitting ultrasonic waves through the rebar. These waves reflect back differently when they encounter defects like voids, cracks, or inclusions. Trained technicians analyze the reflected waves to identify and assess the quality of the rebars. Tensile Testing is carried out to determine the tensile strength of the rebars, which is crucial in assessing their quality. A sample rebar is pulled until it breaks, and the force required to do so is measured. This test helps determine the strength and ductility of the rebar, ensuring it meets the required standards. Chemical analysis is often conducted on steel rebars to ensure they meet the specified composition requirements. Samples are collected from the rebars, and various tests are performed to determine the chemical composition, including carbon, manganese, and other alloying elements. This analysis helps ensure that the rebars possess the necessary properties for the intended application. These inspection methods are typically carried out by qualified and experienced personnel, such as certified welding inspectors or quality control technicians. By implementing these quality inspection procedures, construction sites can ensure that the steel rebars used in their projects meet the required standards, thereby ensuring the safety and longevity of the structures being constructed.
- Q: What is the effect of corrosion on the strength of steel rebars?
- Corrosion has a detrimental effect on the strength of steel rebars. As corrosion occurs, it causes the steel rebar to rust and deteriorate, leading to a loss of structural integrity. This can significantly weaken the rebars, compromising their ability to support loads and increasing the risk of structural failure. Regular inspection and maintenance are crucial to prevent corrosion and maintain the strength of steel rebars.
- Q: Can steel rebars be used in the construction of sound barriers and noise walls?
- Yes, steel rebars can be used in the construction of sound barriers and noise walls. Steel rebars are commonly used as reinforcement in concrete structures, which are often used to build sound barriers and noise walls. They provide strength, durability, and structural integrity to these barriers, ensuring they can effectively reduce noise pollution.
- Q: What are the different shapes and forms of steel rebars available?
- In construction projects, various shapes and forms of steel rebars are available, each tailored for specific applications and requirements. 1. The most commonly used steel rebars are plain round bars, which have a circular cross-section. They find wide-ranging applications, including general construction, reinforcement in concrete slabs, and foundation works. 2. Deformed bars, on the other hand, have surface protrusions or deformations to enhance adhesion with concrete. These deformations increase the bond strength between the rebar and the concrete, making them suitable for applications demanding high tensile strength, such as columns, beams, and retaining walls. 3. Square rebars, as their name suggests, have a square cross-section. They are commonly employed in applications requiring a strong bond with concrete, such as precast concrete elements, footings, and walls. 4. Rectangular rebars possess a rectangular cross-section and are frequently utilized in applications necessitating higher tensile strength, such as bridges, tunnels, and heavy structural elements. 5. Welded wire fabric (WWF) is a prefabricated reinforcement material comprising a grid-like pattern formed by welding longitudinal and transverse wires together. It is commonly used in slabs, walls, and pavements to ensure uniform reinforcement distribution. 6. Dowel bars are specifically employed to transfer loads between adjoining concrete elements, such as connecting slabs or pavements. Smooth round bars are typically used and inserted into drilled holes with epoxy adhesive to enhance load transfer. 7. T-shaped rebars have a T-like cross-section, featuring a stem and a flange. They find common applications where additional reinforcement is required at specific locations, such as joints, corners, and connections. To ensure optimal reinforcement and structural integrity, it is crucial to consider the specific requirements of the construction project and consult with structural engineers or professionals to determine the appropriate shape and form of steel rebars.
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Deformed Steel Bar HRB400
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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