GR40 deformed steel bar bar for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10000 m.t.
- Supply Capability:
- 100000 m.t./month
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Specification
OKorder is offering high quality GR40 deformed steel bar bar 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:
GR40 deformed steel bar bar for construction for construction 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 deformed steel 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:
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 & Delivery of HR Deformed Steel Rebars of Good Quality: 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 terms: TT payment in advance or Irrevocable LC at sight. Trade terms :FOB, CFR, CIF Delivery Detail: within 45 days after received advanced payment or LC. FAQ： Q1: What makes stainless steel stainless? A1: 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. Q2: Can stainless steel rust? A2: 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. |
- Q: How do steel rebars affect the durability of a structure?
- The durability of a structure is greatly influenced by steel rebars. These reinforcements, which are made of high-strength steel, are embedded in concrete to improve its tensile strength and overall structural integrity. Steel rebars prevent structural failures and ensure the long-term durability of the construction by resisting cracking and flexural stresses. One of the main advantages of using steel rebars is their ability to withstand tension forces. While concrete is strong in compression, it is weak in tension. When a structure is subjected to loads that cause bending or stretching, the rebars distribute these forces throughout the concrete, preventing it from cracking or breaking. This reinforcement enhances the load-bearing capacity of the structure, making it more resistant to external forces like earthquakes or strong winds. Furthermore, steel rebars also play a critical role in preventing corrosion within the structure. Concrete is porous, and with time, moisture can infiltrate it, leading to rusting of the embedded reinforcement. Rusting rebars expand, resulting in cracks and weakening of the structure. However, by using rebars that are resistant to corrosion, such as epoxy-coated or stainless steel rebars, the risk of corrosion is significantly reduced, thus improving the durability of the structure. In addition to their mechanical properties, steel rebars also contribute to the durability of a structure in terms of construction speed and long-term maintenance. Compared to other traditional reinforcement materials, rebars are relatively easy to install, reducing construction time and costs. Furthermore, their long lifespan and minimal maintenance requirements ensure the longevity and durability of the structure over time. To conclude, steel rebars are indispensable for guaranteeing the durability of a structure. Their ability to withstand tension forces, prevent cracking, and mitigate the risk of corrosion greatly enhances the structural integrity and longevity of the construction. It is crucial to incorporate steel rebars into the design and construction process to create robust, secure, and long-lasting structures.
- Q: What is the lifespan of a steel rebar in a concrete structure?
- The lifespan of a steel rebar in a concrete structure can vary depending on various factors such as the quality of the rebar, the design and construction of the structure, and the environment it is exposed to. However, on average, steel rebars in concrete structures can last for several decades to even over a century if properly designed, constructed, and maintained.
- Q: Are steel rebars suitable for use in structures with aggressive soil conditions?
- Yes, steel rebars are suitable for use in structures with aggressive soil conditions. Steel rebars have excellent strength and durability, making them resistant to the corrosive effects of aggressive soil. Additionally, rebars can be coated with protective materials or used in conjunction with other corrosion-resistant techniques to enhance their performance in such conditions.
- Q: What are the factors to consider when choosing the right steel rebar for a project?
- Several factors must be considered when choosing the appropriate steel rebar for a project. These factors encompass the project type, structural requirements, environment, and specific rebar characteristics. The project type is a key factor to consider, as each type has unique structural demands. Residential buildings, bridges, and highways, for example, require different strengths and capacities. The chosen steel rebar must be able to withstand the expected loads and stresses of the project. Additionally, its size and shape should match the project's design and specifications. Structural requirements are crucial in selecting the right steel rebar. This involves evaluating the required tensile strength, yield strength, and elongation properties. It is essential to choose a rebar that provides the necessary strength and durability to maintain the project's structural integrity. The project's environment also plays a significant role. If the project will be exposed to corrosive elements like saltwater or chemicals, corrosion-resistant rebar is necessary. This choice prevents premature deterioration and ensures the structure's longevity. Furthermore, specific rebar characteristics must be assessed. The grade of the steel, which determines its strength and ductility, is important. Different grades, such as ASTM A615 or ASTM A706, possess distinct properties suitable for various applications. The rebar's surface finish, whether plain or deformed, also affects its bonding ability with concrete. Availability and cost are additional factors to consider. It is vital to ensure that the selected rebar is readily available in the required quantities and sizes. Moreover, the rebar's cost should align with the project's budget constraints. In conclusion, choosing the appropriate steel rebar for a project entails considering the project type, structural requirements, environmental conditions, and specific rebar characteristics. By carefully evaluating these factors, one can select the most suitable steel rebar that guarantees the structure's durability and longevity.
- Q: Are steel rebars easy to bend and shape?
- No, steel rebars are not easy to bend and shape as they are typically made of strong and rigid materials, making them resistant to deformation.
- Q: What is the lifespan of steel rebars in concrete structures?
- The lifespan of steel rebars in concrete structures can vary depending on several factors. Generally, steel rebars are designed to provide durability and strength to concrete structures. With proper design, construction, and maintenance, steel rebars can last for several decades or even up to a century in concrete structures. One crucial factor influencing the lifespan of steel rebars is the quality of materials used. High-quality rebars manufactured with corrosion-resistant coatings or stainless steel tend to have a longer lifespan compared to regular carbon steel rebars. Additionally, the quality of concrete used and its ability to protect the rebars from moisture and corrosive agents is also important. Environmental conditions play a significant role in determining the lifespan of steel rebars. Exposure to harsh climates, such as areas with high humidity, saltwater, or acidic environments, can accelerate corrosion and reduce the lifespan of the rebars. Adequate protective measures, such as proper concrete cover thickness, waterproofing, and the use of corrosion inhibitors, can help extend the lifespan of steel rebars in such conditions. Maintenance and inspection are essential to ensure the longevity of steel rebars in concrete structures. Regular inspections for signs of corrosion, cracking, or damage should be conducted, and any necessary repairs or protective measures should be undertaken promptly. In some cases, periodic coating or rebar replacement may be required to maintain the structural integrity of the concrete elements. In summary, the lifespan of steel rebars in concrete structures can range from several decades to over a century, depending on various factors such as material quality, environmental conditions, and proper maintenance. By employing appropriate design, construction, and maintenance practices, the lifespan of steel rebars can be significantly extended, ensuring the long-term integrity and durability of the concrete structure.
- Q: How are steel rebars classified based on their shapes?
- Steel rebars are classified based on their shapes into various types. One of the commonly used types is the plain round bar, which is a straight cylindrical rod with no deformations or protrusions. Another type is the deformed bar, which has deformations or ribs on its surface. These deformations provide better bonding between the bar and the concrete, thus enhancing the overall strength of the structure. There are different patterns of deformations used in deformed bars, such as ribbed, twisted, and indented. Ribbed bars have evenly spaced protrusions along the length of the bar, which increase the surface area and improve the grip with the concrete. Twisted bars have a helical pattern of deformations, providing a strong grip. Indented bars have small indentations or notches on their surface, enhancing the bond strength. In addition to plain round and deformed bars, there are also other specialized shapes available for specific applications. These include square bars, which have a square cross-section, and rectangular bars, which have a rectangular cross-section. These shapes are often used in applications where the rebars need to be positioned in a specific orientation or where additional strength is required in a particular direction. Overall, the classification of steel rebars based on their shapes allows for the selection of the most suitable type for different construction projects, considering factors such as bonding strength, load-bearing capacity, and specific design requirements.
- Q: What is the difference between steel rebars and steel mesh?
- Steel rebars and steel mesh are both widely used in construction as reinforcement materials, but they differ in their shape and application. Rebars are long, cylindrical bars that are typically used to reinforce concrete structures, such as beams, columns, and slabs. They are placed in a grid-like pattern and provide tensile strength to the concrete, preventing it from cracking under pressure. On the other hand, steel mesh consists of interconnected wires that form a grid or sheet-like pattern. It is commonly used in applications such as concrete pavements, sidewalks, and walls. Steel mesh provides both tensile and shear strength to the concrete, distributing the load more evenly and reducing the risk of cracking. In summary, rebars are used for localized reinforcement in specific areas, while mesh provides overall reinforcement across larger surfaces.
- Q: Can steel rebars be used in structures subjected to chemical exposure?
- Steel rebars can be used in structures subjected to chemical exposure, but their suitability depends on the specific type and concentration of chemicals involved. In general, stainless steel rebars or epoxy-coated rebars are preferred for such applications as they provide better resistance to corrosion and chemical attack compared to plain carbon steel rebars. However, it is important to conduct a thorough evaluation of the chemical environment and consult with experts to determine the most appropriate rebar material for the specific structure and its intended use.
- Q: What are the different types of coatings available for steel rebars to prevent corrosion?
- There are several types of coatings available for steel rebars to prevent corrosion. These include epoxy coatings, zinc coatings, galvanized coatings, and polyethylene coatings. Each coating has its own unique properties and level of protection against corrosion.
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GR40 deformed steel bar bar for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10000 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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