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:How long do steel rebars last in structures?: Steel rebars can last for several decades, typically around 50 to 100 years, when used in structures. However, their lifespan can be affected by various factors such as the quality of the rebar, environmental conditions, maintenance practices, and exposure to corrosive agents. Regular inspections and proper maintenance can significantly extend the lifespan of steel rebars in structures.

Q:How are steel rebars protected against damage during the construction process?: Steel rebars are typically protected against damage during the construction process by using various measures such as proper handling, storage, and covering them with protective coatings or materials like epoxy or zinc to prevent corrosion. Additionally, rebars are often positioned and supported correctly to minimize the risk of damage or bending.

Q:How are steel rebars installed in concrete slabs?: Steel rebars are typically installed in concrete slabs by first determining the required size, spacing, and layout of the rebars as per structural design requirements. The rebars are then positioned and supported using chairs or spacers to ensure proper concrete cover. Once in place, the rebars are tied together using wire or mechanical connectors to form a reinforcing mesh. Finally, the concrete is poured and allowed to cure, effectively embedding the rebars within the slab to provide added strength and durability.

Q:How are steel rebars protected against rust or corrosion?: Steel rebars are protected against rust or corrosion through a process called corrosion protection, which involves either applying a protective coating or using corrosion-resistant materials such as stainless steel.

Q:How do steel rebars contribute to the overall safety of a structure?: The overall safety of a structure is significantly enhanced by steel rebars in multiple ways. Firstly, concrete, which is brittle and prone to cracking under tension, is reinforced by steel rebars. By embedding steel rebars within the concrete, the structure gains increased tensile strength, enabling it to withstand greater loads and resist cracking or failure. Secondly, stress is distributed and dissipated throughout the structure with the help of steel rebars. When a load is applied to a structure, such as an earthquake or strong winds, internal forces are generated that need to be managed and dispersed. Steel rebars serve as an interconnected network of bars, transferring the load from one rebar to another, and ultimately to the foundation. This prevents localized stress concentrations and ensures that the structure can better withstand external forces. Moreover, the ductility of a structure is improved by steel rebars. Ductility refers to the ability of a material to deform without breaking. When a structure is subjected to extreme forces, such as seismic activity or high winds, it must be able to flex and absorb energy without collapsing. Steel rebars provide this ductility by elongating and deforming under stress, absorbing and dissipating energy before reaching a critical point of failure. This characteristic is crucial in protecting the overall integrity of the structure and ensuring the safety of its occupants. Furthermore, steel rebars also contribute to the long-term durability of a structure. Concrete is vulnerable to various environmental factors, including moisture, temperature fluctuations, and chemical exposure, which can cause deterioration and weakening over time. By reinforcing the concrete with steel rebars, the structure becomes more resistant to these factors, maintaining its strength and stability for an extended period. In conclusion, steel rebars are essential for ensuring the overall safety of a structure. They enhance the tensile strength of concrete, distribute stress, improve ductility, and increase the durability of the structure. By providing these crucial properties, steel rebars significantly reduce the risk of structural failure and safeguard the lives and well-being of individuals within the building.

Q:What are the different types of steel rebars used in road bridges?: There are primarily three types of steel rebars commonly used in road bridges: carbon steel rebars, epoxy-coated rebars, and stainless steel rebars. Carbon steel rebars are the most widely used type due to their high strength and cost-effectiveness. Epoxy-coated rebars are used in areas prone to corrosion, as the coating protects the steel from moisture and chemicals. Stainless steel rebars, on the other hand, provide excellent resistance to corrosion and are typically used in highly corrosive environments or for aesthetic reasons.

Q:Are steel rebars prone to rusting?: Steel rebars have a tendency to rust. Rebars are composed mainly of carbon steel, which contains iron. When exposed to moisture and oxygen, the iron in steel rebars undergoes a chemical reaction known as oxidation, resulting in the formation of rust or iron oxide. This process can be accelerated in environments with high humidity, coastal regions with saltwater exposure, or when the rebars come into contact with water or other corrosive substances. The rusting of steel rebars can weaken their structural integrity and compromise the strength and durability of concrete structures. Therefore, it is crucial to protect rebars from rust by applying anti-corrosion coatings or using stainless steel rebars in areas prone to rusting. Regular maintenance and inspection are also important for promptly identifying and addressing any rust-related issues.

Q:How do steel rebars affect the overall construction timeline?: Steel rebars can have a significant impact on the construction timeline. These reinforced steel bars are essential for providing strength and stability to concrete structures, thus ensuring their durability. However, their installation requires careful planning, coordination, and time. The process involves cutting, bending, and positioning the rebars accurately, which can be time-consuming. Additionally, delays in the delivery of rebars or issues with their quality can further extend the construction timeline. Despite these potential time constraints, using steel rebars is crucial for ensuring the structural integrity of the project, making them an integral part of construction planning.

Q:What are the common mistakes to avoid when installing steel rebars?: To ensure a successful and safe installation of steel rebars, it is important to avoid several common mistakes: 1. Placing the rebars incorrectly is a frequent error that must be avoided. Accurate placement should be carried out in accordance with the engineering or construction drawings. Any deviation from the specified location can compromise the structural integrity of the reinforced concrete. 2. Insufficient concrete cover over the rebars is another mistake to avoid. The cover acts as a protective layer, preventing corrosion and providing fire resistance. Inadequate cover can lead to premature deterioration and structural failure over time. 3. Proper support for the rebars is crucial during the concrete pouring process. Insufficient support can cause sagging or movement of the rebars, resulting in an uneven distribution of steel reinforcement and compromising the structural strength of the concrete. 4. Correct alignment and spacing of the rebars according to design specifications is essential. Improper alignment can lead to congestion, difficulties in pouring concrete, and compromised bond strength between the rebar and concrete. Similarly, incorrect spacing can result in insufficient reinforcement, reducing the overall strength of the structure. 5. Thoroughly cleaning the rebars before installation is necessary to remove rust, dirt, and other contaminants. Failure to do so can lead to poor bond strength and an increased risk of corrosion, weakening the structure over time. 6. Adequate tying of the rebars using the appropriate wire or connectors is essential to maintain alignment and ensure the structural integrity of the reinforced concrete. Neglecting proper tying can result in shifting or movement during the concrete pouring process, compromising the structural strength. 7. Lack of supervision and quality control during the installation process is a common mistake. Experienced personnel should oversee the installation to ensure compliance with design specifications, proper installation techniques, and adherence to safety guidelines. By avoiding these common mistakes, the installation of steel rebars can be carried out effectively, resulting in a strong, durable, and safe reinforced concrete structure.

Q:Can steel rebars be used in tunnels and underground structures?: Tunnels and underground structures can indeed utilize steel rebars. These rebars are frequently employed in construction projects for the purpose of reinforcing concrete structures and providing added strength and durability. When it comes to tunnels and underground structures, where stability and load-bearing capacity are of utmost importance, incorporating steel rebars into the concrete walls, floors, and ceilings is a common practice to enhance their structural integrity. The utilization of rebars helps in distributing the load and resisting potential cracks or deformations that may arise from the pressure exerted by the surrounding soil or water. Furthermore, steel rebars possess resistance against corrosion, making them suitable for underground environments that may contain moisture and other corrosive elements. All in all, steel rebars play a vital role in the construction of tunnels and underground structures by ensuring their safety and longevity.

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