HIGH QUALITY HOT ROLLED STEEL REBARBS STANDARD
- 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 do steel rebars impact the overall construction cost estimation process?
- The overall construction cost estimation process is significantly influenced by steel rebars. These reinforcing bars play a crucial role in reinforced concrete structures, providing strength and durability to the building. Consequently, including them in the cost estimation is essential for accurately assessing the total project cost. To begin with, the material cost of the construction project is impacted by steel rebars. Rebars are typically priced based on weight, so the quantity and size of rebars required directly affect the material cost estimation. Accurately identifying and quantifying rebars is necessary to ensure an appropriate budget allocation for the project. Furthermore, labor cost estimation is also influenced by steel rebars. Skilled labor is required to install rebars, and the time and effort involved in cutting, bending, and placing the rebars must be taken into account. The complexity of the reinforcement design, such as intricate shapes or complex detailing, can increase labor costs. Therefore, accurately estimating rebars allows for better planning of labor resources and cost allocation. In addition to material and labor costs, steel rebars impact other aspects of the construction cost estimation process. For example, the weight and placement of rebars affect the structural design, which can influence the cost estimation of the concrete mix design and formwork requirements. The size and spacing of rebars may also impact the excavation and foundation costs, as well as the overall project timeline. Moreover, steel rebars contribute to the long-term costs of the construction project. The quality and durability of rebars directly affect the lifespan and maintenance requirements of the structure. Investing in high-quality rebars can reduce future maintenance and repair costs, as well as enhance the overall life cycle cost analysis of the project. To conclude, the overall construction cost estimation process is significantly impacted by steel rebars. Accurately estimating rebars is essential for determining material and labor costs, as well as influencing other cost-related aspects of the project. It allows for precise budget allocation, resource planning, and consideration of long-term costs, ultimately resulting in a more reliable and comprehensive construction cost estimation.
- Q: How are steel rebars protected from moisture during storage?
- Steel rebars are protected from moisture during storage by applying a protective coating, such as anti-corrosion paint or epoxy, or by covering them with waterproof materials like plastic sheets or tarps. Additionally, storing rebars in a dry and well-ventilated area can help prevent moisture buildup.
- Q: How do steel rebars contribute to the fire resistance of concrete?
- Concrete's fire resistance is enhanced by steel rebars in several ways. Firstly, steel rebars possess a non-combustible nature and a high melting point, ensuring they do not burn or add fuel to fires. This characteristic aids in preventing the spread of fire and maintaining the concrete's structural stability during fire incidents. Additionally, steel rebars act as reinforcement within the concrete, boosting its overall strength and load-bearing capacity. This reinforcement effectively prevents cracking or fragmentation of the concrete under high temperatures caused by fire. The presence of steel rebars also enhances the concrete's ductility, enabling it to deform and absorb energy during fires, rather than abruptly shattering or collapsing. Moreover, steel's thermal conductivity surpasses that of concrete, enabling it to effectively conduct heat away from the fire zone. This assists in dissipating heat and preventing it from reaching critical levels that could compromise the concrete's structural integrity. By absorbing and distributing heat, steel rebars contribute to slowing down the temperature rise within the concrete during fires. In conclusion, steel rebars contribute to concrete's fire resistance by providing structural stability, improving strength and load-bearing capacity, enhancing ductility, and dissipating heat. These attributes make concrete structures reinforced with steel rebars more resilient, enabling them to withstand fires for extended periods. As a result, the safety of occupants is increased, and potential property damage is reduced.
- Q: What are the different methods of reinforcing concrete structures using steel rebars?
- There are several methods of reinforcing concrete structures using steel rebars. 1. Traditional Reinforcement: This method involves placing steel rebars in the formwork before pouring concrete. The rebars are positioned in a predetermined pattern and secured with wire or tie rods to ensure they stay in place during the concrete placement. This method is commonly used for reinforcing columns, beams, and slabs. 2. Pre-stressed Reinforcement: In this method, high-strength steel rebars are pre-stressed before being placed in the concrete structure. This is usually achieved by stretching the rebars and then anchoring them to resist the tensile forces that will be exerted on the structure. Pre-stressed reinforcement is commonly used in bridges and large-span structures where high strength and durability are required. 3. Post-tensioning: Post-tensioning is a technique used to reinforce concrete structures after the concrete has hardened. It involves inserting steel tendons into pre-determined ducts or sleeves within the concrete and then applying tension to the tendons using hydraulic jacks. This process helps to counteract the tensile forces and increase the overall strength and load-carrying capacity of the structure. 4. Fiber Reinforcement: Instead of using traditional steel rebars, fiber reinforcement involves adding small fibers made of materials like glass, polypropylene, or steel to the concrete mix. These fibers help to distribute and control cracks that may occur due to shrinkage or thermal expansion. Fiber reinforcement is often used in applications such as industrial flooring, shotcrete, and precast concrete products. 5. Reinforced Concrete Masonry: In this method, steel rebars are inserted into the mortar joints of concrete masonry units (CMUs) to increase the strength and stability of the structure. The rebars are placed vertically and horizontally at specific intervals and then grouted to ensure a solid bond between the rebars and the CMUs. Overall, these different methods of reinforcing concrete structures using steel rebars provide various options for engineers and designers to enhance the strength, durability, and load-carrying capacity of concrete structures, depending on the specific requirements of the project.
- Q: Are steel rebars suitable for reinforcement in historical buildings?
- Yes, steel rebars can be suitable for reinforcement in historical buildings. They provide structural strength and durability, and when used appropriately, they can help preserve the integrity of the historical structure. However, it is crucial to consider the specific characteristics and requirements of the historical building, as well as consult with experts and follow conservation guidelines, to ensure the appropriate use of steel rebars in reinforcement.
- Q: What is the role of steel rebars in bridge deck construction?
- Steel rebars play a crucial role in bridge deck construction. They are used to reinforce the concrete used in the construction of the bridge deck. The main function of rebars is to provide tensile strength to the concrete, as concrete is strong in compression but weak in tension. Bridge decks are subjected to various loads, including the weight of the vehicles, live loads, and environmental factors such as temperature changes and vibrations. These loads can cause the bridge deck to bend, crack, or even collapse if it lacks sufficient tensile strength. By incorporating steel rebars into the bridge deck, the tensile strength of the concrete is significantly enhanced. The rebars are strategically placed throughout the concrete structure to distribute the loads and resist tension, thereby preventing cracks and ensuring the overall structural integrity of the bridge. In addition to reinforcing the concrete, steel rebars also help to control cracks that may occur due to shrinkage or thermal expansion. When the concrete shrinks or expands, it can lead to the formation of cracks, which can compromise the durability and stability of the bridge. However, the inclusion of rebars helps to control and limit the size and extent of these cracks, ensuring the long-term performance of the bridge. Furthermore, steel rebars also aid in the transfer of loads between different components of the bridge, such as the bridge deck and the supporting piers or abutments. They help to create a continuous load path, ensuring that the loads are efficiently transmitted and distributed throughout the bridge structure. In summary, steel rebars are essential in bridge deck construction due to their ability to provide the necessary tensile strength to the concrete. They enhance the structural integrity of the bridge, control cracks, and facilitate the transfer of loads, ultimately ensuring the safety and longevity of the bridge.
- Q: What is the process of threading steel rebars?
- Threading steel rebars involves creating threads on the ends of the rebars to allow for easy and secure connection with other rebars or structural elements. This is typically done using a machine called a rebar threading machine. The first step is to cut the rebars to the desired length and clean the ends to remove any dirt, rust, or debris that could interfere with the threading process. This ensures a smooth and accurate threading operation. Once the rebars are prepared, the rebar threading machine is set up. It consists of a spindle that rotates at a high speed, along with a threading die positioned on the spindle. The threading die has grooves and ridges designed to cut threads into the rebars. To thread a rebar, one end is inserted into the threading machine while the other end is held firmly in place. The machine is then started, and the spindle rotates to cut into the rebar's surface, creating threads by removing small amounts of material. The machine is operated until the desired length of threads is achieved, which can vary depending on project requirements and the type of connection being made. It is crucial to ensure accurate and consistent cutting of the threads to maintain the structural integrity of the rebar connections. After the threading process is complete, the threaded rebars are inspected to ensure clean and defect-free threads that meet the required standards. They are then ready for use in construction projects, where they can be connected to other rebars or structural elements using various methods such as couplers or nuts. In conclusion, threading steel rebars involves cutting and cleaning the rebars, setting up a rebar threading machine, inserting the rebars, and using a threading die to create threads. This process ensures easy and secure connection of rebars in construction projects, providing strength and stability to the structures they are used in.
- Q: How are steel rebars classified based on their yield strength?
- Steel rebars are classified based on their yield strength by assigning them grades or designations, such as Grade 40, Grade 60, or Grade 75. These grades indicate the minimum yield strength in thousands of pounds per square inch (ksi) that the rebars are able to withstand before permanent deformation occurs.
- Q: What is the maximum allowable diameter for steel rebars?
- The maximum allowable diameter for steel rebars varies depending on the specific construction project and design specifications. However, commonly used steel rebars typically range from 6mm to 50mm in diameter.
- Q: What is the manufacturing process of the hot rolled thread steel production line?
- Reheating furnace, roughing mill, rolling mill, rolling mill, water cooling device, cooling bed, cold shear, automatic counting device, bundling machine, unloading bench is calculated from the Shanghai kuanli Steel Co. Ltd. to provide thread steel weight: diameter * * outer diameter theory 0.00617=kg/m theory and 6.50.260 steel manufacturers specifications Jiuzheng 8.00.395 Jiuzheng steel 100.617 steel 120.888 steel 141.21 nine nine nine nine nine steel 161.58 steel 182 steel 202.47 steel 222.98 steel 253.85 nine nine nine nine nine steel 284.83 steel 326.31 steel.
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HIGH QUALITY HOT ROLLED STEEL REBARBS STANDARD
- 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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