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: What is the impact of steel rebars on the overall energy efficiency of a building?: Steel rebars have a significant impact on the overall energy efficiency of a building. As an integral part of reinforced concrete structures, rebars provide strength and stability to the building, reducing the need for excessive materials and minimizing energy consumption during construction. Additionally, steel rebars help enhance the thermal performance of a building by improving insulation, reducing heat loss, and increasing energy efficiency in heating and cooling operations. Overall, steel rebars contribute to a more sustainable and energy-efficient building design.

Q: Can steel rebars be used in the construction of underground parking structures?: Steel rebars are an effective choice for constructing underground parking structures. They are commonly used in reinforced concrete structures, such as underground parking, to reinforce and provide tensile strength. The rebars are strategically placed within the concrete to enhance its load-bearing capacity, durability, and resistance to cracking or deformation. Steel rebars are ideal for underground parking structures that require strong structural support, thanks to their high strength and ability to withstand heavy loads. To further enhance their resistance to corrosion, protective coatings or stainless steel rebars can be applied, which is particularly important in underground environments with moisture and exposure to chemicals. Ultimately, the use of steel rebars is a standard practice in constructing underground parking structures to ensure long-lasting structural integrity.

Q: What are the common misconceptions about steel rebars?: Steel rebars are often mistakenly thought to be exclusively used in large construction projects. While they are indeed commonly employed in the construction of big buildings, bridges, and other infrastructure, they are also utilized in smaller endeavors such as residential homes, retaining walls, and even garden structures. By providing strength and reinforcement to concrete structures, rebars ensure the durability and longevity of these constructions. Another misconception pertains to the assumption that all rebars are identical. In reality, there are numerous types of rebars available, each possessing unique characteristics and serving specific purposes. Some common variations include carbon steel rebars, epoxy-coated rebars, stainless steel rebars, and galvanized rebars. The particular type selected depends on factors such as the environment, exposure to corrosive elements, and project requirements. Additionally, there is a misconception that rebars can be haphazardly placed or spaced within a concrete structure. However, improper placement or inadequate spacing of rebars can result in structural weaknesses, compromising the integrity of the concrete. It is essential to adhere to engineering specifications and guidelines to ensure that the rebars are correctly positioned and spaced, thus providing optimal reinforcement. Furthermore, there is a belief that steel rebars are prone to rusting. While it is accurate that steel can corrode when exposed to moisture and oxygen, construction practices can greatly mitigate this risk. For instance, the use of epoxy-coated or galvanized rebars offers an additional layer of protection against corrosion. Additionally, appropriate concrete cover and the application of protective coatings can prevent moisture penetration and prolong the lifespan of the rebars. Lastly, some individuals argue that steel rebars are costly and not cost-effective. Although it is true that steel rebars can contribute to the overall expenses of a construction project, they are an indispensable investment in ensuring structural integrity and safety. The cost of repairing or replacing a structure due to insufficient reinforcement far exceeds the initial investment in quality rebars. Furthermore, the use of rebars can reduce the need for excessive concrete, resulting in cost savings in terms of materials and construction time. In conclusion, it is imperative to debunk prevailing misconceptions surrounding steel rebars. They are not solely limited to large construction projects, they come in various types, necessitate proper placement and spacing, can be safeguarded against corrosion, and represent a cost-effective investment in guaranteeing the durability and safety of concrete structures.

Q: What is the effect of steel rebars on the thermal conductivity of concrete?: The presence of steel rebars in concrete has a significant effect on its thermal conductivity. Steel is a good conductor of heat, meaning it can easily transfer thermal energy through its structure. When steel rebars are embedded within concrete, they create a pathway for heat to flow through the material. This thermal conductivity of steel rebars can have both positive and negative implications on the overall thermal performance of concrete structures. On one hand, it can enhance the overall heat transfer within the structure, allowing for more efficient heating or cooling. This can be advantageous in applications where thermal conductivity is desired, such as in building designs that require active temperature control. However, the presence of steel rebars can also lead to increased heat loss or gain depending on the environmental conditions. In situations where there is a temperature difference between the inside and outside of the structure, the steel rebars can act as thermal bridges, allowing heat to escape or enter the building more easily. This can result in higher energy consumption for heating or cooling purposes. To mitigate these potential issues, additional insulation measures can be implemented to reduce the thermal bridging effect caused by steel rebars. This could include using thermal break materials or coatings, or adopting insulation techniques such as adding foam or other insulating materials around the rebars. In summary, steel rebars in concrete have a significant impact on its thermal conductivity. While they can enhance heat transfer within the structure, they can also lead to increased heat loss or gain. Proper insulation measures should be considered to minimize the negative effects of thermal bridging caused by steel rebars.

Q: Can steel rebars be used in marine construction projects?: Yes, steel rebars can be used in marine construction projects. They are commonly used for reinforcing concrete structures in marine environments due to their high strength, durability, and resistance to corrosion. However, proper protective measures such as coating or stainless steel rebars should be used to enhance their resistance against saltwater and prevent corrosion.

Q: What are the common mistakes to avoid when installing steel rebars?: Some common mistakes to avoid when installing steel rebars include improper placement or spacing of rebars, inadequate concrete cover, insufficient reinforcement overlap, incorrect bar bending or cutting, and neglecting to secure the rebars in place during concrete pouring. It is essential to follow the specifications and guidelines provided by structural engineers and adhere to industry standards to ensure proper reinforcement installation.

Q: How are steel rebars classified based on their diameter?: The standardized system for categorizing steel rebars is based on their diameter. Rebars are measured in millimeters and assigned a specific number to indicate their diameter. The most commonly used classification system is known as the "nominal diameter" system, which groups rebars into different sizes according to their diameter. The nominal diameter is represented by a whole number, such as 6, 8, 10, 12, and so on. Under this system, the nominal diameter provides an approximation of the rebar's diameter in millimeters. For example, a rebar with a nominal diameter of 8 has an approximate diameter of 8 millimeters. Rebars can have diameters ranging from 6 millimeters to 50 millimeters or even larger. It is important to consider that the actual diameter of a rebar may slightly differ from its nominal diameter due to manufacturing tolerances. Nevertheless, these variations typically fall within an acceptable range. The classification of steel rebars based on their diameter holds great significance in construction and engineering. It plays a crucial role in determining the appropriate size and strength of rebars needed for specific applications. Different diameters of rebars possess varying load-bearing capacities, and accordingly, they are utilized in various structural elements like beams, columns, slabs, and foundations. In conclusion, steel rebars are categorized according to their diameter using the nominal diameter system, where the approximate diameter is expressed as a whole number in millimeters. This classification system aids in selecting the suitable size and strength of rebars for different construction purposes.

Q: How are steel rebars protected against lightning strikes in buildings?: Steel rebars in buildings are typically protected against lightning strikes through the installation of a lightning protection system. This system consists of lightning rods or air terminals placed at the highest points of the building, connected to a network of conductors that are bonded to the rebar. This allows for the safe dissipation of lightning currents into the ground, protecting the steel rebars from potential damage caused by lightning strikes.

Q: How are steel rebars protected from fire damage?: Steel rebars are protected from fire damage through various methods. One commonly used method is the application of fire-resistant coatings. These coatings are specifically designed to withstand high temperatures and prevent the steel from reaching its critical temperature, which is when it starts to lose its structural integrity. Another method is the use of fire-resistant concrete encasement. In this method, the rebars are embedded within a layer of concrete that has been specifically designed to resist fire. This concrete acts as a barrier, preventing the heat from directly reaching the steel rebars and thus protecting them from fire damage. Additionally, fire-resistant wraps or blankets can be used to provide temporary protection to steel rebars during construction. These wraps are made from fire-resistant materials and are applied directly to the rebars, creating a barrier that prevents direct exposure to fire. It is important to note that the level of fire protection required for steel rebars depends on the specific building codes and regulations in place. These codes typically specify the minimum fire resistance rating that must be achieved for structural elements, including rebars, in order to ensure the safety of the building and its occupants.

Q: How do steel rebars enhance the load-bearing capacity of a structure?: Steel rebars enhance the load-bearing capacity of a structure by providing reinforcement and increasing its tensile strength. They are embedded within the concrete, creating a composite material that can withstand higher loads and prevent cracking or failure under stress.

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