• Deformed steel bar HRB500 400 System 1
  • Deformed steel bar HRB500 400 System 2
  • Deformed steel bar HRB500 400 System 3
Deformed steel bar HRB500 400

Deformed steel bar HRB500 400

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1000 m.t.
Supply Capability:
10000 m.t./month

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Usage and Applications of HRB500 Deformed Steel Bar:

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 HRB500 Deformed Steel Bar:

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

Delivery Detail: within 45 days after received advanced payment or LC.

Label: to be specified by customer, generally, each bundle has 1-2 labels

Trade terms: FOB, CFR, CIF

Deformed Steel Bar in stock

Note:

1. Our products are produced according to national standard (GB), if not, supply according to national standards (GB) or agreement as customer required.

2. Other Grade and Standard Deformed Steel Bar we can supply:

   Grade: GR40/GR60, G460B/B500A/B500B/B500C,BST500S

   Standard: ASTM, BS, DIN

   The Minimum Order Quantity of these products is high, and need to be confirmed.

3. We can not only supply Deformed Steel Bar; if you need anything about building materials, please contact us for further information.

4. Please send us your detail specifications when inquire. We will reply to you as soon as possible. We sincerely hope we can establish a long stable business relationship.


Q:How do steel rebars affect the shrinkage and creep of concrete?
Steel rebars can have a significant impact on the shrinkage and creep behavior of concrete. Shrinkage refers to the reduction in volume of concrete due to the loss of moisture during the drying process, while creep refers to the time-dependent deformation of concrete under sustained load. The presence of steel rebars helps to mitigate the shrinkage of concrete. As the concrete shrinks, the rebars, being much stiffer than concrete, resist this shrinkage and provide a restraining effect. This restraint reduces the overall volume change of the concrete and helps to minimize cracking that may occur due to shrinkage. Additionally, the tensile strength of the steel rebars allows them to distribute stress and prevent localized cracking, further reducing the impact of shrinkage on the overall performance of the concrete. In terms of creep, the presence of steel rebars can increase the creep deformation of concrete. This is because the rebars can introduce additional stress and strain into the concrete, leading to greater creep deflections. However, the effect of steel rebars on creep is generally considered to be minor compared to other factors such as the mix design, water-cement ratio, and curing conditions. It is important to note that proper design and detailing of the reinforcement layout can help minimize the impact of steel rebars on shrinkage and creep. Adequate spacing and cover of rebars, as well as appropriate reinforcement ratios, can optimize the performance of both the concrete and the rebars. Additionally, the use of supplementary cementitious materials like fly ash or silica fume can also help reduce shrinkage and mitigate the impact of creep. In summary, steel rebars play a crucial role in minimizing the shrinkage-related issues in concrete by providing restraint and distributing stress. While they may increase the creep deformation of concrete, their impact is generally minor compared to other factors. Proper design and detailing of the reinforcement can optimize the performance of both concrete and steel rebars in terms of shrinkage and creep.
Q:Are there any limitations on using steel rebars in cold climates?
Yes, there are some limitations on using steel rebars in cold climates. The main concern is the potential for corrosion due to the presence of moisture, salt, and de-icing chemicals commonly used on roads and bridges during winter. When steel rebars are exposed to these elements, they can rust and weaken over time, compromising the structural integrity of the concrete. To mitigate this issue, several measures can be taken. One common practice is to use epoxy-coated rebars, which provide a protective layer against moisture and chemicals. Additionally, stainless steel rebars can be used, as they are highly resistant to corrosion. However, these options can be more expensive than traditional steel rebars. Furthermore, the construction process in cold climates can also present challenges. Concrete cures and gains strength more slowly in low temperatures, which can impact the overall project timeline. Special precautions, such as heating the concrete or using accelerators, may be necessary to ensure proper curing. It is important to consult local building codes and regulations specific to cold climates to ensure compliance and safety. Engineering professionals experienced in cold weather construction practices can provide valuable insights and recommendations to address the limitations associated with using steel rebars in these conditions.
Q:What is the impact of steel rebars on the carbon footprint of a building?
Steel rebars have a significant impact on the carbon footprint of a building due to their production process and overall lifecycle. The manufacturing of steel rebars involves the extraction of raw materials, such as iron ore, and the energy-intensive process of smelting and refining them into steel. This phase alone contributes to greenhouse gas emissions and consumes substantial amounts of energy. Additionally, the transportation and construction of steel rebars also contribute to the carbon footprint of a building. The transportation process involves the use of fossil fuels, which release carbon dioxide into the atmosphere. Furthermore, the construction phase requires heavy machinery and equipment, which also rely on fossil fuels, further adding to the carbon emissions. Moreover, the carbon footprint of steel rebars extends beyond the construction phase. Steel is highly durable and can last for decades, but it also requires maintenance and potential replacement over time. These activities, such as repairs or demolitions, incur additional carbon emissions due to transportation, energy consumption, and waste management. However, it is important to note that steel rebars can offer environmental benefits when used in high-performance buildings or sustainable construction practices. For instance, steel is recyclable, and reusing steel rebars can significantly reduce the carbon footprint associated with their production. Additionally, steel rebars provide structural strength, allowing for the construction of taller and more efficient buildings that can potentially reduce energy consumption in the long run. To minimize the carbon footprint of a building, it is essential to consider alternative materials, such as recycled steel or other low-carbon materials, in the construction process. Additionally, implementing energy-efficient practices throughout the building's lifecycle, including reduced energy consumption and improved waste management, can further mitigate the environmental impact of steel rebars.
Q:Are there any limitations on the maximum length of steel rebars used in construction?
Yes, there are limitations on the maximum length of steel rebars used in construction. The maximum length of steel rebars can vary depending on various factors such as the structural design, construction codes, and transportation limitations. In general, the length of steel rebars is limited by practical considerations such as handling, transportation, and installation. Very long rebars can be difficult to transport and maneuver on construction sites. Additionally, excessively long rebars may be more prone to bending or sagging, which can affect their structural integrity. Therefore, construction industry standards and codes typically provide guidelines or restrictions on the maximum length of steel rebars to ensure their safe and efficient use in construction projects. It is important for architects, engineers, and contractors to adhere to these limitations to ensure the structural stability and safety of the building.
Q:How are steel rebars connected or joined together during construction?
Steel rebars are typically connected or joined together during construction by overlapping the ends of the rebars and tying them using steel wire or using mechanical couplers.
Q:What are the marking of the steel bars on the mills? Which factory is the 2LG16 thread?
2LG16 thread manufacturer is the Laiwu iron and steel works, referred to as "Laiwu Steel", the letter "LG", indicating that the steel produced by the diameter of 16 of the two grade thread steel.
Q:What are the standards and specifications for steel rebars?
International organizations such as ASTM and ISO primarily establish the standards and specifications for steel rebars, also known as reinforcing bars. These standards guarantee that steel rebars meet specific requirements for strength, durability, and dimensional accuracy. ASTM A615 is one of the most commonly used standards for steel rebars. It covers deformed and plain carbon-steel bars for concrete reinforcement. This standard sets the minimum yield strength, tensile strength, and elongation properties for various rebars grades, including Grade 40, Grade 60, and Grade 75. It also outlines the mechanical properties, chemical composition, and bending properties of rebars. Aside from 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 possess improved weldability and ductility to withstand seismic forces and other dynamic loads. ISO 15630 is another significant standard that addresses steel for concrete reinforcement. It provides specifications for hot-rolled and cold-worked steel bars, as well as welded fabric and lattice girders. ISO 15630 outlines the mechanical properties, chemical composition, and dimensional tolerances of rebars. Furthermore, regional or national organizations also establish their own standards for steel rebars. For instance, the BSI has developed the BS 4449 standard, which specifies the requirements for carbon steel rebars used in concrete reinforcement in the United Kingdom. Similarly, the ISI has set the IS 1786 standard for cold-twisted steel bars used in concrete reinforcement in India. In conclusion, 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.
Q:Can steel rebars be used in road or highway construction?
Yes, steel rebars can be used in road or highway construction. Steel rebars, also known as reinforcing bars, are commonly used in the construction industry to provide additional strength and support to concrete structures. In road and highway construction, rebars are typically used in the construction of reinforced concrete pavements, bridge decks, and retaining walls. Rebars are embedded in concrete to enhance its tensile strength, as concrete is strong in compression but weak in tension. By adding rebars to the concrete, it helps distribute the tensile forces and improves the overall durability and load-bearing capacity of the road or highway infrastructure. The use of steel rebars in road or highway construction offers several advantages. Firstly, it improves the structural integrity and longevity of the infrastructure, as reinforced concrete structures are better able to withstand heavy traffic loads, temperature changes, and environmental factors. Secondly, rebars help prevent cracking and deterioration of the concrete, reducing the need for frequent repairs and maintenance. Additionally, the use of rebars allows for more efficient and cost-effective construction, as it enables the use of thinner concrete sections without compromising strength. Overall, steel rebars are a crucial component in road or highway construction, as they provide the necessary reinforcement to ensure the strength, durability, and longevity of the infrastructure.
Q:What are the advantages of using ribbed steel rebars?
There are several advantages to using ribbed steel rebars in construction projects. Firstly, the ribbed design of these rebars provides enhanced bonding with concrete. The ribs increase the surface area of contact between the rebar and the surrounding concrete, improving the adhesion and preventing slippage. This leads to a stronger bond, ensuring the structural integrity of the reinforced concrete. Secondly, ribbed steel rebars offer improved resistance to shear forces. The ribs act as anchor points within the concrete, distributing the load more evenly and reducing the chances of failure due to shear stress. This makes ribbed rebars ideal for applications that experience high shear forces, such as beams and columns. Additionally, the ribbed pattern of these rebars enhances their ductility. Ductility is the ability of a material to undergo deformation without breaking. The presence of ribs allows the steel rebar to stretch and bend without fracturing, making it more resistant to cracking or failure under stress. This is especially crucial in earthquake-prone areas, where the ability of a structure to absorb and dissipate energy is essential for its survival. Furthermore, ribbed steel rebars have excellent corrosion resistance. The ribs create a barrier that prevents moisture and corrosive agents from reaching the steel core. This significantly extends the lifespan of the rebar, reducing maintenance costs and ensuring the long-term durability of the reinforced concrete structure. Lastly, ribbed steel rebars are readily available and cost-effective. They are manufactured in various sizes and lengths, allowing for easy customization to suit different construction needs. Moreover, due to their popularity and widespread use, ribbed rebars are competitively priced, making them a cost-effective option for reinforcing concrete structures. In conclusion, the advantages of using ribbed steel rebars include improved bonding with concrete, enhanced resistance to shear forces, greater ductility, excellent corrosion resistance, and cost-effectiveness. These benefits make ribbed rebars an ideal choice for reinforcing concrete structures, providing strength, durability, and longevity to the construction projects.
Q:What are the common problems associated with steel rebars in construction?
Some common problems associated with steel rebars in construction include corrosion, improper placement or spacing, inadequate cover, poor welding or splicing, and lack of proper anchorage.

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