GB STANDARD HIGH QUALITY HOT ROLLED STEEL REBAR
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 100000 m.t./month
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Product Description:
Specifications of Hot Rolled Steel Rebar:
The production process of Steel Rebar
1-Waling beam furnace 2-Roughing rolling group 3-Intermediate rolling train
4-Finishing rolling group 5-Water-cooling device 6-Walking beam cooler
7-Finishing equipment(including the cold scale shear,short feet collection system,
automatic counting device,bundling machine, collect bench)
Usage and Applications of Hot Rolled Steel Rebar:
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 Hot Rolled Steel Rebar:
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
Label:to be specified by customer, generally, each bundle has 1-2 labels
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 long do steel rebars last?
- Steel rebars have a lifespan of approximately 50 to 100 years, depending on factors such as environmental conditions, maintenance, and quality of the steel.
- Q: What is the recommended diameter of steel rebars for slab reinforcement?
- The recommended diameter of steel rebars for slab reinforcement typically ranges from 8mm to 32mm, depending on the specific requirements of the slab design and the expected load-bearing capacity.
- Q: What is the average lifespan of steel rebars in marine environments?
- The average lifespan of steel rebars in marine environments can vary depending on several factors. However, in general, steel rebars have a lifespan of around 50 to 100 years in marine environments. This estimate takes into account the corrosive nature of saltwater, which can accelerate the deterioration of steel structures. Additionally, factors such as the quality of the steel, the design and construction of the marine structure, and maintenance practices can also affect the lifespan of steel rebars. Regular inspections, protective coatings, and proper maintenance can help extend the life of steel rebars in marine environments.
- Q: How do steel rebars resist corrosion?
- Steel rebars resist corrosion through a process called passivation. When the steel is exposed to air and moisture, a thin layer of iron oxide forms on its surface, which acts as a protective barrier against further corrosion. This layer, also known as rust, prevents oxygen and moisture from reaching the inner layers of steel, thereby preventing further oxidation. Additionally, steel rebars are often coated with materials such as epoxy or zinc to provide an extra layer of protection against corrosion. These coatings act as a physical barrier between the steel and the environment, preventing contact with corrosive elements. Regular maintenance, such as cleaning and applying protective coatings, can also help to extend the lifespan of steel rebars and prevent corrosion.
- Q: What are the considerations for using epoxy-coated steel rebars?
- When considering the use of epoxy-coated steel rebars, there are several important factors to take into account. These considerations include the corrosion resistance, durability, cost-effectiveness, and construction requirements. One primary consideration is the corrosion resistance provided by epoxy-coated steel rebars. The epoxy coating acts as a protective barrier against moisture, chemicals, and other corrosive elements that are typically present in concrete structures. This coating significantly reduces the risk of corrosion, thus increasing the lifespan of the rebar and the overall durability of the reinforced concrete. Durability is another key consideration. Epoxy-coated steel rebars are designed to withstand harsh environmental conditions, including exposure to chloride ions, which are known to accelerate corrosion in traditional black steel rebars. This enhanced durability ensures that the structure remains structurally sound over an extended period, reducing the need for costly repairs or replacements. Cost-effectiveness is also an important consideration. While epoxy-coated steel rebars may have a higher initial cost compared to black steel rebars, their long-term cost-effectiveness is evident. The reduced risk of corrosion and subsequent maintenance or repair expenses can result in significant savings over the life of a structure. Additionally, the extended lifespan of the rebar can contribute to lower life-cycle costs. Construction requirements must also be taken into consideration when using epoxy-coated steel rebars. The application of the epoxy coating requires careful handling and storage to prevent damage or contamination. Special care must be taken during transportation, storage, and installation to ensure the integrity of the coating. Contractors must also be trained and experienced in working with epoxy-coated steel rebars to ensure proper installation and adherence to industry standards. In conclusion, the considerations for using epoxy-coated steel rebars include their corrosion resistance, durability, cost-effectiveness, and the specific construction requirements they impose. While they may have a higher initial cost and require additional care during handling and installation, the long-term benefits of increased corrosion resistance and durability make them a favorable choice for reinforced concrete structures.
- 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: What are the different types of steel rebars used in beam reinforcement?
- There are three main types of steel rebars commonly used in beam reinforcement: mild steel rebars, high-strength deformed steel rebars, and epoxy-coated rebars.
- Q: What are the different types of steel rebars used in railway bridges?
- There are several types of steel rebars used in railway bridges, each with their own specific characteristics and applications. Some of the common types include: 1. Carbon Steel Rebars: These are the most commonly used rebars in railway bridges. They are made of carbon steel and provide high tensile strength and excellent durability. Carbon steel rebars can withstand heavy loads and are suitable for various railway bridge applications. 2. Stainless Steel Rebars: Stainless steel rebars are highly resistant to corrosion and are used in railway bridges located in coastal or high humidity areas. They offer excellent long-term performance and are particularly beneficial in preventing rust and deterioration caused by exposure to moisture and salt. 3. Galvanized Steel Rebars: Galvanized steel rebars are coated with a layer of zinc to enhance their corrosion resistance. They are commonly used in railway bridges in areas with aggressive environmental conditions, such as industrial zones or areas prone to chemical exposure. The zinc coating provides an additional protective barrier, increasing the rebars' lifespan. 4. Epoxy-Coated Steel Rebars: Epoxy-coated rebars are coated with a layer of epoxy resin, providing enhanced corrosion protection. They are commonly used in railway bridges exposed to harsh environments, such as bridges located near chemical plants or in heavily polluted areas. The epoxy coating acts as a barrier against corrosion and extends the rebars' service life. 5. Prestressed Steel Rebars: Prestressed steel rebars are designed to withstand high tension loads. They are used in railway bridges that require additional strength and stability, particularly in areas with heavy train traffic or where long spans need to be covered. Prestressed rebars are tensioned before the concrete is poured, allowing them to counteract the tensile forces and prevent cracking or deformation. These are just a few examples of the different types of steel rebars used in railway bridges. The choice of rebar type depends on various factors, including the environmental conditions, load requirements, and design specifications of the bridge. It is essential to select the appropriate type of rebar to ensure the structural integrity and longevity of railway bridges.
- Q: How are steel rebars affected by temperature fluctuations?
- Steel rebars are affected by temperature fluctuations in several ways. Firstly, when exposed to high temperatures, steel rebars can expand, which can lead to cracking and weakening of the structure they are supporting. On the other hand, in extremely cold temperatures, steel rebars can contract, potentially causing stress and cracking. These temperature fluctuations can also impact the overall durability and longevity of the rebars, potentially reducing their structural integrity over time. Therefore, it is crucial to consider the effects of temperature fluctuations when designing and constructing structures with steel rebars to ensure their long-term stability and safety.
- Q: What is the process of galvanizing steel rebars?
- The process of galvanizing steel rebars involves immersing them in a bath of molten zinc to create a protective coating. This coating helps to prevent corrosion and extends the lifespan of the rebars. The steel rebars are first cleaned and prepared by removing any impurities or mill scale. Then, they are dipped into the zinc bath, where the zinc bonds with the surface of the steel through a metallurgical reaction. Afterward, the rebars are withdrawn from the bath, excess zinc is removed, and they are allowed to cool and solidify. The resulting galvanized rebars are ready to be used in construction projects, providing increased durability and resistance to environmental factors.
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GB STANDARD HIGH QUALITY HOT ROLLED STEEL REBAR
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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