EN STANDARD HIGH QUALITY HOT ROLLED REBAR

EN STANDARD HIGH QUALITY HOT ROLLED REBAR

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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:

Appearance: Black

Technique: Slitting hot rolled steel coil

Grade: Q235, Q195,A36 SS400 S235jr.St37-2

Standard: AISI,GB,DIN,ASTM,EN,JIS

Length: 6m, 9m, 12m or as your requirement.

Width: 10mm-1010mm

Thickness: 1.5mm-20mm

Business type: big manufacture

Place of origin: Tianjin China (Mainland)

Packaging Details: In bundles for exporting and sea worthy

Delivery Detail: Within 15-35 days after receiving L/C or deposite T/T

EN STANDARD HIGH QUALITY HOT ROLLED REBAR

General specification as below:

Flat Bar Specification
Width (mm)	Thickness (mm)	Length (m)	Theoretical Weight (kg/m)
20	2.0	6/9/12	0.31
20	2.5	6/9/12	0.39
20	2.75	6/9/12	0.43
25	2.5	6/9/12	0.49
25	3.75	6/9/12	0.74
30	2.5	6/9/12	0.59
30	3.5	6/9/12	0.82
30	9.75	6/9/12	2.30
40	3.5	6/9/12	1.10
40	4.75	6/9/12	1.50
40	11.75	6/9/12	3.69
50	2.75	6/9/12	1.08
50	4.5	6/9/12	1.77
50	9.75	6/9/12	3.83
60	5.5	6/9/12	2.60
60	7.5	6/9/12	3.53
60	11.5	6/9/12	5.42
80	5.5	6/9/12	3.45
80	7.5	6/9/12	4.71
80	11.75	6/9/12	7.38
100	3.25	6/9/12	2.55
100	4.75	6/9/12	3.73
100	7.5	6/9/12	5.89
120	9.75	6/9/12	9.18
120	11.75	6/9/12	11.07
150	9.75	6/9/12	11.48
150	11.5	6/9/12	13.54
150	13.5	6/9/12	15.90
160	11.75	6/9/12	14.76
200	9.5	6/9/12	14.92
250	5.75	6/9/12	11.28
340	7.75	6/9/12	20.68

Products Advantages

1. high quality competitive price and Accurate in size

2. high dimensional accuracy

3. Guaranteed raw material

4.high utilization rate of material

5.convenient in construction, saving much time and labor

6. high mechanical strength

Application: Widely used for construction, Ship building, Machinery manufacturing ,steel structure,agriculture and steel grating.

Q: Can steel rebars be used in structures with limited construction space?: Yes, steel rebars can be used in structures with limited construction space. Steel rebars are commonly used in reinforced concrete structures to provide tensile strength and reinforce the overall structural integrity. Due to their small size and flexibility, steel rebars can be easily maneuvered and installed in tight spaces. They can be bent, cut, or shaped to fit the specific requirements of the construction project. Additionally, steel rebars can be prefabricated off-site and transported to the construction site, which further facilitates their use in limited construction spaces. Overall, steel rebars are a versatile and practical choice for reinforcing structures with limited construction space.

Q: What are the different types of steel rebars used in tunnel constructions?: Tunnel constructions rely on the use of different steel rebars to strengthen and fortify the tunnels. These rebars play a vital role in providing stability and reinforcement to the tunnel structures. Below are several types of steel rebars commonly utilized in tunnel constructions: 1. Mild Steel Rebars: Also known as black or carbon steel rebars, mild steel rebars are the most frequently employed in tunnel constructions. They are both cost-effective and possess sufficient strength to meet the structural demands of tunnels. 2. High-Strength Steel Rebars: High-strength steel rebars, sometimes referred to as tension steel, offer enhanced tensile strength, making them ideal for tunnels that require high load-bearing capabilities. These rebars are typically fabricated from alloys such as ASTM A615 Grade 80 or ASTM A706 Grade 80. 3. Stainless Steel Rebars: Stainless steel rebars are resistant to corrosion and provide excellent durability in harsh tunnel environments. They are commonly used in tunnel constructions where corrosion protection is vital, such as in marine or coastal areas. 4. Epoxy-Coated Rebars: Epoxy-coated rebars are regular mild steel rebars that have been coated with epoxy to safeguard against corrosion. They are often employed in tunnel constructions that are exposed to moisture, chemicals, or other corrosive elements. 5. Galvanized Rebars: Galvanized rebars are coated with a layer of zinc to shield them from corrosion. They are commonly used in tunnel constructions that are exposed to moisture or in regions with high humidity levels. 6. Fiberglass Rebars: Fiberglass rebars, also known as GFRP (Glass Fiber Reinforced Polymer) rebars, are lightweight and resistant to corrosion. They are used in tunnel constructions where reducing weight is crucial or in areas with high electromagnetic interference. 7. Carbon Fiber Rebars: Carbon fiber rebars, also called CFRP (Carbon Fiber Reinforced Polymer) rebars, possess high tensile strength and are resistant to corrosion. They are often utilized in tunnel constructions that require high tensile strength and resistance to chemical or environmental degradation. Choosing the appropriate type of steel rebar for tunnel constructions depends on various factors such as load-bearing requirements, exposure to corrosion, environmental conditions, and project budget. It is advisable to consult with structural engineers or construction experts to ensure the optimal selection of steel rebars for tunnel projects.

Q: What are the advantages of using composite steel rebars?: There are several advantages to using composite steel rebars in construction projects. Firstly, composite steel rebars offer superior strength and durability compared to traditional rebars. The combination of steel and a fiber-reinforced polymer (FRP) composite material provides enhanced tensile strength, allowing for a more robust and resilient structure. This is particularly advantageous in areas with high seismic activity or extreme weather conditions, where the reinforcement needs to withstand significant forces. Secondly, composite steel rebars are highly corrosion-resistant. Steel rebars alone are prone to corrosion when exposed to moisture and chemicals, leading to structural degradation over time. The addition of a protective FRP composite layer effectively shields the steel from these corrosive elements, prolonging the lifespan of the reinforcement and reducing the need for frequent maintenance. Moreover, composite steel rebars offer a lightweight alternative to conventional steel reinforcement. The use of FRP composites significantly reduces the weight of the rebars while maintaining their structural integrity. This lightweight characteristic makes transportation and installation easier, reducing construction time and costs. Additionally, composite steel rebars provide excellent electrical and thermal insulation properties. Unlike traditional steel rebars, which are conductive, the FRP composite layer acts as an insulator, minimizing the risk of electrical hazards and preventing the transfer of heat. This is especially beneficial in structures where electrical or thermal conductivity needs to be controlled, such as in power plants or buildings with sensitive equipment. Lastly, composite steel rebars are environmentally friendly. The production of steel rebars typically requires a significant amount of energy and emits greenhouse gases. By utilizing FRP composites, the overall carbon footprint of the reinforcement is reduced, making it a more sustainable choice. In conclusion, the advantages of using composite steel rebars include enhanced strength, corrosion resistance, lightweight construction, electrical and thermal insulation, and environmental sustainability. These benefits make composite steel rebars a compelling choice for various construction applications.

Q: What is the purpose of steel rebars?: The purpose of steel rebars is to reinforce and strengthen concrete structures. Rebars, also known as reinforcing bars, are steel rods or wires that are used to provide additional strength to concrete by acting as a tension device. When embedded within the concrete, rebars help to distribute the applied loads more evenly, preventing the concrete from cracking or failing under pressure. This reinforcement is particularly important in structures such as buildings, bridges, and highways that are subjected to heavy loads or potential stress, as it enhances their durability and structural integrity. Steel rebars are widely used in construction projects as they are strong, durable, and resistant to corrosion, making them an essential component for ensuring the long-term stability and safety of concrete structures.

Q: What is the process of anchoring steel rebars in masonry walls?: To ensure a secure and reliable connection between the steel reinforcement and the masonry structure, several steps are involved in anchoring steel rebars in masonry walls. Firstly, a detailed design and plan for the reinforcement layout in the masonry wall must be established. This involves determining the spacing, size, and placement of the rebars based on structural requirements. Next, the masonry wall needs to be prepared by cleaning the surface and removing any loose debris or obstructions. This creates a clean and stable base for the rebars. Then, holes are drilled into the masonry wall at predetermined locations according to the reinforcement design. These holes are slightly larger than the diameter of the rebars to allow for easy insertion. After drilling, the holes are cleaned to remove any dust or debris. A bonding agent, such as epoxy or cementitious grout, is then applied to the holes. This enhances the bond between the rebars and the masonry wall. The steel rebars are then inserted into the prepared holes, ensuring alignment according to the reinforcement design. They are pushed into the holes until they reach the desired depth, fully embedding them in the bonding agent. Once the rebars are in place, the bonding agent needs time to cure and harden. The curing time varies depending on the type of bonding agent used and the environmental conditions. It is crucial to follow the recommended curing time to ensure secure anchoring. After the curing process is complete, a thorough inspection is conducted to ensure the rebars are properly anchored and meet the required specifications. This involves checking for proper alignment, depth, and overall stability. By following these steps, the process of anchoring steel rebars in masonry walls provides structural reinforcement and strength to the overall masonry structure. This enhances durability and resistance to various forces and loads.

Q: What are the different grades of steel rebars available in the market?: There are several grades of steel rebars available in the market, including Grade 40, Grade 60, and Grade 75. These grades indicate the minimum yield strength of the rebars, with Grade 40 having a yield strength of 40,000 pounds per square inch (psi), Grade 60 having a yield strength of 60,000 psi, and Grade 75 having a yield strength of 75,000 psi. The choice of grade depends on the specific application and structural requirements.

Q: How do steel rebars affect the overall thermal expansion of concrete structures?: Steel rebars can significantly affect the overall thermal expansion of concrete structures. Concrete has a relatively low coefficient of thermal expansion, meaning it expands and contracts less compared to other materials when subjected to temperature changes. On the other hand, steel rebars have a higher coefficient of thermal expansion than concrete. When temperature fluctuations occur, such as during hot or cold weather, the steel rebars expand or contract at a different rate than the surrounding concrete. This difference in thermal expansion rates can lead to internal stresses within the concrete structure. These internal stresses can cause cracking or even structural failures if not properly addressed. To mitigate the effects of thermal expansion, engineers design concrete structures with appropriate reinforcement, including steel rebars. The rebars help to distribute the stresses caused by temperature changes more evenly, reducing the risk of cracking or damage. Additionally, the tensile strength of steel rebars allows them to resist the forces generated by the differential expansion, providing stability to the overall structure. However, it is important to note that steel rebars alone cannot completely eliminate the effects of thermal expansion. Other factors, such as the design of expansion joints and the use of proper construction techniques, also play a crucial role in minimizing the impact of temperature fluctuations on concrete structures.

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: Can steel rebars be used in the construction of high-speed rail tracks?: Yes, steel rebars can be used in the construction of high-speed rail tracks. Steel rebars are commonly used as reinforcement in concrete structures, including rail tracks. The high tensile strength of steel rebars provides the necessary stability and support required for high-speed trains, ensuring the tracks can withstand the heavy loads and dynamic forces generated by these trains.

Q: How are steel rebars used in pre-stressed concrete structures?: Steel rebars are used in pre-stressed concrete structures to provide tensile strength and reinforcement. They are typically placed in the concrete before it is poured and are then tensioned to withstand the loads and stresses that the structure will encounter. This pre-stressing process helps to enhance the overall strength and durability of the concrete, making it capable of withstanding greater loads and reducing the risk of cracking or failure.

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