A615 deformed steel bar deformed steel bar

A615 deformed steel bar deformed steel bar System 1

A615 deformed steel bar deformed steel bar

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Packaging & Delivery

Packaging Detail:	In bundles (standard export package or as per clients' requirement)
Delivery Detail:	According to the actual order quantity

Specifications

Standard: ASTM, GB, JIS, BS, AISI
Grade: HRB400, HRB335
Application: Construction, shipping, building material

Product Description

Type	steel rebar
Standard Grade	a. GB1499.2-2007, HRB335, HRB400, etc.
	b. ASTM A615 Gr.40, Gr.60, etc.
	c. BS4449, etc. d. JISG3112-SD390
Diameter	6mm-32mm etc. as per customers' requirement
Length	6m, 8m, 9m,12m as standard
Application	Construction, shipping, building material
Packing	standard export packing, or as per customers' requirement
Quality	First quality
Delivery time	Right now after the deposit.
Others	1. our products conform to all the standards
	2. we can offer special specification products as per our customers
	3. we can offer the original mill test certificate and original product

1.Diameter:6mm-32mm
2.Material:BS4449 Grade 460B,ASTM A615 GR60
3.Length:6-12meters

1. Length: 6m-12m as standard.
2. Reputation first, best competitive price, high quality, quotes price promptly and confirm the delivery on time!

3. Application : Used for housing construction.

4. PRICE: Keep lower operating costs so as to offer competitive price for our clients.

5. Minimum Order Quantity: 300 MTS as per size.
6. Invoicing: Actual or Theoretical Weight Basis as buyer’s request.
7. Payment terms: TT payment in advance or irrevocable LC at sight.

8. Delivery time: 25-30 days after we receive your TT payment at sight

Steel Rebar / Deformed Bar / Reinforcing Bar

FAQ:

Q1: How do we guarantee the quality of our products?

A1: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q2: What makes stainless steel stainless?

A2: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

Q: How are steel rebars used in the construction of airports?: Steel rebars are used in the construction of airports to reinforce and strengthen concrete structures such as runways, taxiways, terminal buildings, and other infrastructure. These rebars are embedded within the concrete to provide tensile strength and prevent cracking, ensuring the structural integrity and durability of the airport facilities.

Q: How are steel rebars bent on-site?: Rebar benders, specialized machinery used on-site, are typically employed to bend steel rebars. These machines possess the requisite force and precision to achieve the desired shape and angle for the rebars. To begin the process, the location where the rebar needs to be bent is measured and marked. Subsequently, the rebar is placed within the rebar bender, which is equipped with adjustable rollers and bending arms. These rollers serve to guide the rebar throughout the bending process, while the bending arms gradually apply the necessary force to bend the rebar to the desired angle and shape. The operator of the rebar bender meticulously adjusts the rollers and bending arms to ensure the accurate bend radius and angle are achieved. This requires skill and experience to guarantee the rebars are bent precisely in accordance with the construction plans and specifications. After the rebar has been bent to the desired shape, it is securely fastened in place using tie wire or rebar clips. This ensures that the rebars retain their shape and position during the process of pouring concrete. Bending rebars on-site presents several advantages. Firstly, it allows for greater flexibility and adaptability during construction, as the rebars can be customized and adjusted to meet specific design requirements. Secondly, on-site bending reduces transportation and storage costs, since rebars can be delivered in longer lengths and bent as needed. Lastly, on-site bending saves time and enhances construction efficiency, as the rebars can be bent and installed immediately, eliminating the need for off-site fabrication and transportation delays. In summary, steel rebars are bent on-site utilizing specialized rebar benders, which provide the necessary force and precision to achieve the desired shape and angle. This process offers flexibility, cost savings, and improved construction efficiency.

Q: Are steel rebars suitable for reinforcement in historical buildings?: Yes, steel rebars are suitable for reinforcement in historical buildings. They provide strength and durability to the structure, enhancing its stability and longevity. Additionally, steel rebars can be designed and installed while minimizing visual impact, preserving the historical aesthetics of the building.

Q: Can steel rebars be used in the construction of swimming pools or water tanks?: Yes, steel rebars can be used in the construction of swimming pools or water tanks. Steel rebars are commonly used as reinforcement in concrete structures, providing strength and durability. In the case of swimming pools or water tanks, where water exposure is expected, using steel rebars can help ensure the structural integrity and longevity of the construction.

Q: What are the different types of coating for steel rebars?: Steel rebars can be protected against corrosion and made more durable by applying various types of coatings. These coatings include: 1. Epoxy Coating: Epoxy coating is commonly used for steel rebars as it offers excellent corrosion protection. To ensure a thick and long-lasting coating, epoxy coatings are typically applied in multiple layers. 2. Galvanized Coating: Galvanized coating involves covering the steel rebar with a layer of zinc, which acts as a strong barrier against corrosion and extends the rebar's lifespan. This coating can be applied through hot-dip galvanizing or electroplating processes. 3. Fusion-Bonded Epoxy Coating (FBE): Fusion-bonded epoxy coating is another popular choice. It entails applying epoxy powder to the rebar and then fusing it to the surface through heat. FBE coatings provide exceptional resistance to chemicals and corrosion. 4. Stainless Steel Coating: Steel rebars can be coated with stainless steel to enhance their resistance to corrosion. This is achieved through thermal spray, in which stainless steel particles are sprayed onto the rebar surface. 5. Polyethylene Encasement: Polyethylene encasement involves wrapping the steel rebar with a layer of polyethylene material. This coating acts as a physical barrier, protecting against moisture and chemicals that cause corrosion. Each type of coating offers unique advantages and is suitable for different applications. The choice of coating for steel rebars depends on factors such as the environmental conditions, desired lifespan, and specific project requirements.

Q: What is the corrosion resistance of steel rebars?: The surface of steel rebars forms a protective layer, known as a passive film, which provides excellent corrosion resistance. This film is created when the steel interacts with the surrounding environment. By acting as a barrier, the passive film prevents oxygen and moisture from reaching the steel, thus inhibiting corrosion. There are various factors that contribute to the corrosion resistance of steel rebars. For example, the presence of alloying elements like chromium, nickel, and molybdenum improves the formation and stability of the passive film, making the rebars more resistant to corrosion. Additionally, the composition and microstructure of the steel rebars play a crucial role in determining their resistance to corrosion. However, it is important to note that the corrosion resistance of steel rebars can be compromised under certain conditions. High levels of chlorides, such as those in marine environments or de-icing salts, can accelerate corrosion and reduce the effectiveness of the passive film. Similarly, exposure to acidic or alkaline environments can also negatively affect the corrosion resistance of steel rebars. To minimize the risk of corrosion, various protective measures can be taken. These include applying coatings or paints to the rebars, using corrosion inhibitors, or implementing cathodic protection systems. Regular inspection, maintenance, and proper design and construction practices are also essential to ensure the long-term corrosion resistance of steel rebars in different applications. In conclusion, the excellent corrosion resistance of steel rebars is due to the formation of a protective passive film. However, this resistance can be influenced by factors such as the environment, alloying elements, and microstructure. By implementing appropriate protective measures and maintenance practices, the corrosion resistance of steel rebars can be effectively maintained, ensuring their durability and structural integrity.

Q: Can steel rebars be used in railway track construction?: Yes, steel rebars can be used in railway track construction. They are commonly used as reinforcement in concrete sleepers or ties, which form the base for railway tracks. The rebars provide strength and durability to the sleepers, ensuring the stability and longevity of the railway tracks.

Q: How do steel rebars affect the thermal properties of a structure?: Steel rebars can increase the thermal conductivity of a structure, making it more prone to heat transfer.

Q: What are the different methods of joining steel rebars?: There are several methods of joining steel rebars, each with its own advantages and disadvantages. Here are the most common methods: 1. Lap Splicing: This is the most common method of joining rebars. In lap splicing, two rebars are overlapped and tied together using wire or metal ties. This method is simple and cost-effective, but it requires longer lap lengths to achieve the required strength. 2. Mechanical Splicing: Mechanical splicing involves joining rebars using mechanical couplers or splices. These couplers are designed to provide a strong and reliable connection between the rebars. Mechanical splicing offers quicker installation and reduces the need for lap lengths. However, it may be more expensive than lap splicing. 3. Welding: Welding is another method of joining steel rebars. In this process, the rebars are heated and fused together using electric arcs or gas flames. Welding provides a strong and permanent connection, but it requires skilled labor and specialized equipment. It is commonly used in precast concrete applications. 4. Bolted Connections: Bolted connections involve using bolts and nuts to connect the rebars. This method provides a flexible and adjustable connection, making it suitable for certain applications. However, bolted connections require additional hardware and may not be as strong as other methods. 5. Adhesive Bonding: Adhesive bonding involves using epoxy or other adhesives to join rebars. The adhesive is applied to the rebars, and they are pressed together until the adhesive cures and forms a strong bond. Adhesive bonding offers a clean and aesthetically pleasing finish, but it may not be as strong as other methods and is more suitable for non-structural applications. It is important to note that the choice of joining method depends on factors such as the specific project requirements, structural design, and construction techniques. Consulting with structural engineers and following industry standards and codes is crucial to ensure the proper selection and implementation of the joining method for steel rebars.

Q: What are the guidelines for ensuring proper bond between steel rebars and concrete?: Ensuring a strong bond between steel rebars and concrete is vital for the structural integrity and performance of reinforced concrete structures. To achieve this, the following guidelines should be followed: 1. Correct Placement of Rebars: The rebars must be positioned according to the design specifications, including the required spacing, cover, and lap lengths. It is important to maintain the appropriate spacing between rebars and the concrete surface to provide sufficient concrete cover and prevent corrosion. 2. Thorough Surface Preparation: The steel rebars should be free from loose rust, scale, or contaminants that could hinder the bond with the concrete. Effective surface preparation techniques such as wire brushing, sandblasting, or using a high-pressure water jet can be used to clean the rebars. 3. Mechanical Bond: Ribbed or deformed rebars offer a better mechanical bond with concrete compared to smooth bars. The surface deformations increase the contact area between the rebar and the concrete, thereby enhancing the bond strength. 4. Proper Embedment Length: The embedment length, also known as the development length, is the distance over which the rebar is embedded in the concrete. It is typically calculated based on the required bond strength, concrete strength, and rebar diameter. Adequate embedment length is essential for achieving the desired bond performance. 5. High-Quality Concrete: The quality of concrete, including its strength, workability, and curing, plays a crucial role in achieving a proper bond with steel rebars. The concrete mix should be proportioned correctly, ensuring sufficient cement content, appropriate water-to-cement ratio, and proper compaction during placement. 6. Sufficient Concrete Cover: Adequate concrete cover should be provided around the rebars to protect them from environmental factors, prevent corrosion, and ensure long-term durability. The concrete cover is typically specified in design codes and should be maintained during construction. 7. Proper Reinforcement Splicing: When connecting multiple rebars, proper splicing techniques should be used to ensure a continuous and strong bond. Lap splices, mechanical couplers, or welded splices can be employed based on the design requirements and project specifications. 8. Effective Vibration Techniques: During concrete placement, proper vibration techniques should be employed to ensure adequate compaction and minimize voids or honeycombs around the rebars. This helps to achieve a better bond between the steel rebars and the surrounding concrete. 9. Prevention of Contamination: The rebars should be protected from contamination during storage and construction. Exposure to excessive moisture, chemicals, or other corrosive substances can compromise the bond between the rebars and the concrete. 10. Adherence to Design Specifications: Lastly, it is crucial to strictly adhere to the design specifications and recommendations provided by structural engineers or relevant design codes. These guidelines are tailored to ensure a proper bond between steel rebars and concrete, considering factors such as loadings, environmental conditions, and durability requirements.

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