GR40 deformed steel bar bar for construction
- Ref Price:
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- 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: Can steel rebars be used in the construction of airports?
- Yes, steel rebars can be used in the construction of airports. Rebars are commonly used in concrete structures to provide reinforcement and increase the strength and durability of the construction. Given the heavy loads, long spans, and high traffic volumes associated with airports, steel rebars are essential for ensuring the structural integrity of runways, taxiways, and other airport infrastructure.
- Q: Which is more expensive, rebar or round steel? Which is your business opportunity, such as thread steel and round bar?
- The two thread steel and round steel, which will be more expensive, steel and round steel prices now are soaring, steel prices per ton in 4300 yuan / ton, quality steel grade three Beijing qianshengcheng price is in 3950-4200 yuan / ton.
- Q: What are the best practices for handling and storing steel rebars on a construction site?
- Some best practices for handling and storing steel rebars on a construction site include: 1. Properly stacking and bundling rebars to prevent accidents and injuries. Ensure that they are stored in a well-organized manner to minimize the risk of collapsing stacks. 2. Use appropriate lifting equipment, such as cranes or forklifts, to handle and move rebars safely. Avoid dragging or rolling them on the ground, as this can cause damage and compromise their structural integrity. 3. Protect rebars from exposure to moisture, excessive heat, and corrosive substances. Store them in a dry and covered area to prevent rusting and degradation. 4. Label rebars with relevant information, such as size, type, and grade, to ensure proper identification and usage. This helps in maintaining accurate inventory and preventing mix-ups during construction. 5. Regularly inspect rebars for any signs of damage, such as bends, cracks, or excessive rust. Damaged rebars should be removed from the site and replaced to maintain structural integrity. 6. Train construction workers on safe handling and storage practices for rebars, emphasizing the importance of following guidelines and using appropriate personal protective equipment (PPE). By adhering to these best practices, construction sites can ensure the safety and integrity of steel rebars, contributing to the overall success of the project.
- Q: How do steel rebars affect the overall lifespan of bridge structures?
- Enhancing the overall lifespan of bridge structures is a crucial role played by steel rebars. The reinforcement and strength they provide to the concrete aids in distributing the load and increasing the structural integrity of the bridge. To begin with, the utilization of steel rebars involves reinforcing the concrete components of the bridge, such as beams, columns, and slabs. This reinforcement effectively prevents cracks from forming and reduces the risk of structural failure. Acting as a support system, the rebars enable the concrete to withstand heavy loads, vibrations, and external forces like wind and earthquakes. Consequently, the structural stability of the bridge is maintained throughout its lifespan. Furthermore, steel rebars exhibit resistance to corrosion, which is a significant concern for bridge structures exposed to harsh environmental conditions, like saltwater or high humidity. Corrosion of the reinforcing bars can lead to the deterioration of the concrete and overall weakening of the structure. Nevertheless, steel rebars are usually coated with protective materials or made from corrosion-resistant alloys, substantially diminishing the risk of corrosion and prolonging the bridge's lifespan. Moreover, steel rebars offer flexibility and adaptability in bridge design and construction. They can be effortlessly bent, shaped, and positioned to meet the specific structural requirements of the bridge. This flexibility empowers engineers to design bridges with various shapes, spans, and load capacities, thereby enhancing their overall durability and lifespan. In conclusion, the impact of steel rebars on the overall lifespan of bridge structures is substantial. By reinforcing the concrete, resisting corrosion, and providing flexibility in design and construction, steel rebars significantly improve the structural integrity and durability of bridges, ensuring their safe and long-lasting operation.
- Q: What are the recommended practices for welding steel rebars?
- When it comes to welding steel rebars, there are some recommended practices that ensure a strong and reliable bond. These practices include: 1. Cleanliness: Before welding, it is crucial to ensure that the rebar surfaces are clean and free from any contaminants such as dirt, rust, or grease. A thorough cleaning can be achieved through wire brushing or sandblasting. 2. Preheat: Preheating the steel rebars before welding can help reduce the risk of cracking and improve the quality of the weld. The preheating temperature will depend on the rebar's thickness and the specific welding procedure being used. 3. Welding process: There are various welding processes suitable for steel rebars, with the most commonly used being shielded metal arc welding (SMAW) and gas metal arc welding (GMAW). The choice of process will depend on factors such as the rebar size, project requirements, and local regulations. 4. Electrodes and filler material: Selecting the appropriate electrodes and filler material is crucial for achieving a strong and durable weld. It is recommended to use electrodes and filler materials that match the rebar's carbon content and strength. 5. Welding technique: Employing proper welding techniques, such as maintaining a consistent arc length, controlling the travel speed, and ensuring proper joint alignment, will help produce high-quality welds. 6. Post-weld treatment: After welding, it is essential to allow the welded rebars to cool gradually to avoid thermal stress. It is also recommended to perform post-weld treatments, such as stress relieving, to minimize residual stresses and improve the weld's integrity. 7. Inspection and testing: Conducting regular visual inspections and non-destructive testing, such as ultrasonic or magnetic particle testing, can help ensure the quality and integrity of the welded rebar joints. 8. Compliance with codes and standards: Always adhere to the relevant welding codes and standards specified by local authorities or project requirements. Compliance ensures that the welding process and quality meet the necessary specifications and safety guidelines. It is important to note that welding steel rebars should be performed by trained and qualified personnel who are well-versed in welding techniques and safety practices. Following these recommended practices will help ensure the strength, durability, and safety of steel rebar welds.
- Q: What are the different types of steel coatings used on rebars?
- There are several types of steel coatings used on rebars, including epoxy coatings, zinc coatings, and galvanized coatings. Epoxy coatings provide corrosion resistance and can be used in both indoor and outdoor applications. Zinc coatings, such as zinc-rich paint or zinc thermal spray, provide sacrificial protection against corrosion. Galvanized coatings involve immersing the rebar in molten zinc, providing long-lasting corrosion resistance.
- Q: Are there any specific guidelines for handling and placing steel rebars in concrete?
- Yes, there are specific guidelines for handling and placing steel rebars in concrete. These guidelines are outlined in various construction codes and standards, such as the American Concrete Institute (ACI) standards and the Building Code Requirements for Structural Concrete (ACI 318). These guidelines address aspects like proper handling, storage, and installation of rebars, as well as requirements for bar spacing, lap lengths, and cover thickness to ensure structural integrity and durability of the reinforced concrete. It is important to follow these guidelines to ensure the quality and safety of the concrete structure.
- Q: What are the different types of steel rebars used in precast concrete constructions?
- There are several different types of steel rebars commonly used in precast concrete constructions. These rebars are designed to provide reinforcement and increase the strength and durability of the concrete structure. 1. Mild Steel Rebars: These are the most commonly used type of rebars due to their affordability and easy availability. They have a low carbon content and are suitable for most precast concrete applications. 2. High Strength Deformed (HSD) Rebars: These rebars have a higher yield strength compared to mild steel rebars. They are made by hot rolling process and have deformations on their surface to provide a better grip with concrete. HSD rebars are commonly used in heavy-duty structures or where additional strength is required. 3. Carbon Steel Rebars: Carbon steel rebars are made from carbon steel alloys and have a higher carbon content compared to mild steel rebars. They offer improved strength and durability and are often used in precast concrete constructions that require high tensile strength. 4. Epoxy-Coated Rebars: These rebars are coated with an epoxy layer to protect them from corrosion and increase their lifespan. Epoxy-coated rebars are commonly used in precast concrete constructions that are exposed to harsh environments or have high moisture content. 5. Stainless Steel Rebars: These rebars are made from stainless steel alloys, which provide excellent resistance to corrosion. Stainless steel rebars are used in precast concrete constructions that are exposed to corrosive substances, such as seawater or chemicals. It is important to select the appropriate type of rebar for a precast concrete construction based on the specific requirements of the project, including the load-bearing capacity, durability, and environmental conditions. Consulting with a structural engineer or a construction professional can help determine the best type of rebar for a particular application.
- Q: What is the length and size of thread steel?
- Domestic sales of domestic thread steel, if the contract does not specify requirements, usually fixed length of 9m, 12m two length.
- Q: Can steel rebars be used in cold storage construction?
- Yes, steel rebars can be used in cold storage construction. Steel rebars are widely used in construction due to their high strength and durability. In cold storage construction, where low temperatures are maintained, steel rebars offer several advantages. Firstly, steel rebars have excellent thermal conductivity, which allows them to quickly adjust to the low temperatures inside the cold storage facility. This helps in maintaining a consistent temperature throughout the structure and prevents any potential expansion or contraction issues. Secondly, steel rebars have a high tensile strength, making them suitable for withstanding heavy loads and providing structural stability in cold storage construction. The cold storage facility often requires a strong framework to support the weight of products and equipment stored within. Furthermore, steel rebars are corrosion-resistant, which is particularly important in cold storage environments. The low temperatures and high humidity levels can create a favorable environment for corrosion. However, steel rebars are typically coated with epoxy or galvanized to protect them from moisture and prevent rusting. Lastly, steel rebars are readily available and cost-effective, making them a practical choice for cold storage construction projects. They can be easily sourced and fabricated to meet specific design requirements, ensuring that the structure is built to withstand the unique challenges of a cold storage environment. In conclusion, steel rebars can be effectively used in cold storage construction due to their thermal conductivity, high tensile strength, corrosion resistance, and availability. They provide the necessary structural support and durability required for the construction of cold storage facilities.
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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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