BS4449 ASTM A615 DCL Reinforcing Steel Rebar

BS4449 ASTM A615 DCL Reinforcing Steel Rebar System 1

BS4449 ASTM A615 DCL Reinforcing Steel Rebar System 2

BS4449 ASTM A615 DCL Reinforcing Steel Rebar System 3

BS4449 ASTM A615 DCL Reinforcing Steel Rebar System 4

BS4449 ASTM A615 DCL Reinforcing Steel Rebar

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 10000 m.t./month

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BS4449 ASTM A615 DCL Reinforcing Steel Rebar

Details of the BS4449 ASTM A615 DCL Reinforcing Steel Rebar

Standard & Grade:	GB1499-98 : HRB335,HRB400,HRB500
	BS4449-1997 : GR460,GR500
	CAN/CSA-G30.18-M92 : 400W
	ASTM A615 : Gr.40, Gr.60
Diameter:	6mm;8mm;10mm;12mm;14mm;16mm;18mm;20mm;22mm;25mm;28mm;30mm;32mm;35mm;40mm
Length:	6m,9m,12m
Packing:	Bundle packing
Origin:	China
Application:	Construction,Road,Machinery processing,Welding fields.
Delivery time:	10-25 days
Shipment:	By bulk vessel or Container
Documents:	Mill Test Certificate,Commercial Invoice,Packing List,Certificate of Origin

Company Introduction of the BS4449 ASTM A615 DCL Reinforcing Steel Rebar

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

BS4449 ASTM A615 DCL Reinforcing Steel Rebar

Packaging & Delivery of the BS4449 ASTM A615 DCL Reinforcing Steel Rebar

Packaging Detail	Sea worthy packing /as per customer's packing instruction
Delivery Detail	15 ~ 40 days after receiving the deposit

FAQ

Are you a trading company or manufacturer?	Manufacturer
What’s the MOQ?	1000m2
What’s your delivery time?	15-20 days after downpayment received
Do you Accept OEM service?	Yes
what’s your delivery terms?	FOB/CFR/CIF
What's the Payment Terms?	30% as deposit,70% before shipment by T/T
	Western Union acceptable for small amount.
	L/C acceptable for large amount.
	Scrow ,Paybal,Alipay are also ok
Why choose us?	Chose happens because of quality, then price, We can give you both. Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.
Why choose us?
What's your available port of Shipment?	Main Port, China
What’s your featured services?	Our service formula: good quality+ good price+ good service=customer's trust
What’s your featured services?
Where are your Market?	Covering more than 160 countries in the world

Q: What is the specific concept of thread steel through water and what is the difference?: The principle of water cooling technology to produce rebar is that austenite can be strongly deformed in the process of continuous rolling in the recrystallization zone, resulting in very fine, strongly hardened austenite grains with a lot of defects. With the high speed of cooling on the enhanced cooling of austenite, in a very short period of time, generally not more than 0.5s, is rapidly cooled to near the phase transition temperature, inhibit the growth of austenite grain, try to keep the hardening state of austenite. When the temperature is near the phase transition point, the fine hardening austenite grains are transformed into ferrite with proper grain size under proper air cooling conditions.

Q: How do steel rebars affect the overall weight of a concrete structure?: Steel rebars play a vital role in reinforcing concrete structures and have a significant impact on the structure's weight. Typically made of carbon steel, which is renowned for its strength and durability, rebars provide tensile strength when combined with concrete. The addition of rebars increases the weight of a concrete structure, although the effect on the overall weight is relatively minimal compared to the advantages they offer. While the weight of rebars is significantly lower than that of concrete, their inclusion does contribute to the total weight. The primary purpose of rebars is to reinforce the concrete and ensure its ability to withstand the loads and stresses imposed on the structure. By distributing the tensile forces throughout the concrete, rebars prevent cracking and structural failure. As a result, they enable the construction of larger and more robust structures, including bridges, buildings, and highways. Although the weight of rebars increases the overall weight of a concrete structure, it is a necessary compromise for improved strength and durability. The additional weight from the rebars is typically insignificant compared to the weight of the concrete itself. Moreover, when considering the overall load-bearing capacity and structural integrity of the entire construction, the increased weight is often negligible. In conclusion, steel rebars have a minor impact on the overall weight of a concrete structure, but the benefits they provide are significant. By reinforcing the concrete, rebars ensure its structural integrity, durability, and the ability to construct larger, safer, and more resilient structures.

Q: How to recognize high quality thread steel: Inferior steel due to poor production conditions, bulk, no metal signs, no quality guarantee. For safety reasons, we should not buy the inferior steel bars, or go to the direct agents of some famous brand manufacturers, so that the quality is guaranteed. Shandong hundred fertile Steel Pipe Co., Ltd. here recommends that users in the purchase of thread steel, must go to the formal steel business units to purchase, request steel quality certificate, and acceptance.

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 do steel rebars perform in corrosive environments?: Steel rebars perform well in corrosive environments due to their inherent resistance to corrosion. The presence of a protective oxide layer on the surface of steel rebars prevents direct contact with corrosive elements. Additionally, rebars can be further protected through the application of corrosion-resistant coatings or by using stainless steel rebars. These measures enhance their durability and ensure their long-term performance in corrosive environments, such as marine or industrial settings.

Q: Are steel rebars suitable for use in hospital construction?: Yes, steel rebars are suitable for use in hospital construction. Steel rebars provide excellent strength and durability, making them ideal for reinforcing concrete structures in hospitals. They ensure the integrity of the building, withstand heavy loads, and enhance the overall safety and stability of the hospital.

Q: How are steel rebars tested for quality and strength?: Steel rebars are tested for quality and strength through various methods such as visual inspection, dimensional checks, chemical composition analysis, and mechanical testing. Visual inspection ensures that there are no visible defects or irregularities on the surface. Dimensional checks verify that the rebars meet the specified size and shape requirements. Chemical composition analysis determines the elemental composition of the steel, ensuring it meets the required standards. Mechanical testing involves subjecting samples to tension, bending, or impact tests to assess their strength and confirm they can withstand the expected loads.

Q: Are steel rebars recyclable?: Yes, steel rebars are recyclable. Steel is a highly recyclable material, and rebars, being made of steel, can be easily recycled and reused in various industries. Recycling steel rebars helps conserve resources, reduces waste, and contributes to a more sustainable and eco-friendly construction industry.

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.

Q: How are steel rebars connected or joined together during construction?: Steel rebars are typically connected or joined together during construction using a variety of methods and techniques. The most common method is by overlapping the rebars and tying them together using steel wire. This process is known as rebar tying or wire tying. To ensure a strong and secure connection, the rebars are overlapped at a certain length, typically between 40 to 60 times the diameter of the rebars. The overlapping length allows for the transfer of load and ensures structural integrity. Once the rebars are properly overlapped, steel wire is tightly wrapped around the intersection point to hold them together. Another method of connecting rebars is by using mechanical couplers. Mechanical couplers are pre-fabricated devices that are used to join two rebars together. These couplers provide a threaded connection, allowing for a more precise and efficient joining process. The rebars are inserted into the couplers, and then the couplers are tightened using a wrench or other appropriate tool. Welding is also used to connect rebars, especially in larger construction projects. Welding involves melting the rebars at the intersection point and fusing them together using heat and pressure. This method provides a strong and permanent connection, but it requires skilled labor and proper safety precautions to ensure the quality of the weld. Furthermore, in some cases, rebars can be connected using epoxy bonding. Epoxy bonding involves applying an adhesive material to the surface of the rebars and then pressing them together. The epoxy acts as a bonding agent, creating a strong and durable connection between the rebars. The method of connecting rebars during construction depends on various factors such as the size of the rebars, the specific requirements of the project, and the construction techniques being used. It is essential to follow industry standards and guidelines to ensure the proper connection and integrity of the rebars, as they play a critical role in reinforcing concrete structures.

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