ASTM A615/BS4449 Standard Deformed Steel Rebars

ASTM A615/BS4449 Standard Deformed Steel Rebars System 1

ASTM A615/BS4449 Standard Deformed Steel Rebars System 2

ASTM A615/BS4449 Standard Deformed Steel Rebars System 3

ASTM A615/BS4449 Standard Deformed Steel Rebars System 4

ASTM A615/BS4449 Standard Deformed Steel Rebars

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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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ASTM A615/BS4449 Standard Deformed Steel Rebars

Details of ASTM A615/BS4449 Standard Deformed Steel Rebars

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 ASTM A615/BS4449 Standard Deformed Steel Rebars

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.

ASTM A615/BS4449 Standard Deformed Steel Rebars

Packaging & Delivery of the ASTM A615/BS4449 Standard Deformed Steel Rebars

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: How are steel rebars bundled and tied together on construction sites?: Rebar tying, a specific technique employed in construction sites, is the process by which steel rebars, commonly utilized to reinforce concrete structures, are bundled and secured. This practice guarantees the stability and position of the rebars during activities such as concrete pouring. To bundle the rebars, construction workers gather a predetermined number based on the project's specifications and align them in parallel. They then employ wire or steel straps to bind the rebars tightly, creating a compact bundle. These straps are wrapped around the rebars at regular intervals, ensuring the bundle remains intact and the rebars remain in place. Once bundled, the rebars are further secured using specialized tools. The primary tool used for rebar tying is a rebar tying gun or tier. This tool automates the tying process by swiftly twisting wire around the rebars, forming secure connections. Rebar tying guns or tiers are equipped with a spool of wire that is fed through the tool. The construction worker positions the tool above the rebars, activates a trigger or button, and the tool automatically twists the wire around the rebars, tying them together. This process is repeated at regular intervals along the length of the rebars to ensure a secure fastening. The wire used for rebar tying is typically a thin, high-tensile steel wire designed to withstand the exerted forces during construction. This wire, specifically manufactured for rebar tying, is available in pre-cut lengths or on spools. Overall, the bundling and tying of steel rebars on construction sites play a critical role in ensuring the structural integrity of concrete structures. By utilizing wire or steel straps, along with specialized rebar tying tools, construction workers can create secure bundles of rebars, preventing any movement or separation during construction activities.

Q: How do steel rebars improve the flexural strength of concrete?: Steel rebars improve the flexural strength of concrete by providing reinforcement and resisting tensile forces. Concrete is a strong material in compression but relatively weak in tension. When subjected to bending or other flexural stresses, concrete tends to crack and fail due to its limited tensile strength. By adding steel rebars to the concrete, the composite material gains enhanced flexural strength. The rebars act as a reinforcement by absorbing the tensile forces and distributing them throughout the structure. When the concrete is subjected to bending, the rebars resist the tension, preventing the formation and propagation of cracks. The rebars are typically placed in areas where tensile stresses are expected, such as the bottom of a beam or the tension face of a slab. They are designed to provide sufficient strength to carry the tensile forces and prevent the concrete from failing. The bond between the rebars and the concrete is crucial to ensure effective load transfer from the concrete to the steel reinforcement. Additionally, the use of rebars allows for the design of thinner and more efficient concrete elements. By providing the necessary tensile strength, the amount of concrete required can be reduced, resulting in cost savings and lighter structures. The combination of concrete and steel rebars maximizes the material properties of both components, creating a composite material that is strong in both compression and tension. Overall, steel rebars improve the flexural strength of concrete by reinforcing it against tensile forces, preventing cracking and failure. This reinforcement allows for the design of more efficient and durable structures.

Q: Are there any health and safety concerns related to steel rebars?: Yes, there are potential health and safety concerns related to steel rebars. Handling and working with steel rebars can pose risks such as cuts, injuries from falling or displaced rebars, and musculoskeletal disorders due to heavy lifting or repetitive movements. Additionally, workers may be exposed to hazards during the fabrication process, such as welding fumes or noise pollution. Adequate safety measures, including personal protective equipment and proper training, should be implemented to mitigate these risks and ensure a safe working environment.

Q: Can steel rebars be used in sports arena construction?: Yes, steel rebars can be used in sports arena construction. Steel rebars are commonly used as reinforcement in concrete structures, including sports arenas. The use of steel rebars provides added strength and stability to the concrete, ensuring that the structure can withstand the loads and stresses imposed by the arena's design, such as the weight of the roof, seating, and equipment. Additionally, steel rebars help to prevent cracking and improve the overall durability of the arena. They are often embedded within the concrete foundation, columns, and beams of the structure to enhance its structural integrity and longevity.

Q: What is the role of steel rebars in road bridge construction?: Steel rebars play a crucial role in road bridge construction as they provide reinforcement and strength to the concrete used in building the bridge. They help to distribute the load and forces evenly, enhancing the structural integrity and durability of the bridge. Additionally, rebars prevent the concrete from cracking or breaking under heavy loads, ensuring the safety and longevity of the bridge.

Q: What is the corrosion resistance of steel rebars?: Steel rebars have excellent corrosion resistance due to the protective layer that forms on their surface. This layer, known as a passive film, is formed through the interaction of the steel with the surrounding environment. The passive film acts as a barrier, preventing oxygen and moisture from reaching the underlying steel and thus inhibiting the corrosion process. Various factors contribute to the corrosion resistance of steel rebars. For instance, the presence of alloying elements such as chromium, nickel, and molybdenum enhances 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 corrosion resistance. 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 found in marine environments or de-icing salts, can accelerate the corrosion process and reduce the effectiveness of the passive film. Similarly, exposure to acidic or alkaline environments can also negatively impact the corrosion resistance of steel rebars. To mitigate the risk of corrosion, various protective measures can be employed. These include applying coatings or paints to the rebars, using corrosion inhibitors, or utilizing 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, steel rebars possess excellent corrosion resistance due to the formation of a protective passive film. However, the corrosion 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: How do steel rebars help in load distribution within a structure?: Steel rebars help in load distribution within a structure by providing reinforcement and strength to the concrete. They are embedded within the concrete to enhance its tensile strength and prevent cracking or failure under heavy loads. The rebars act as a framework, distributing the applied load across a larger area and reducing stress concentrations, thereby ensuring the stability and durability of the structure.

Q: How are steel rebars protected against extreme weather conditions?: Steel rebars are protected against extreme weather conditions through various methods such as epoxy coating, galvanization, and concrete cover. These protective measures prevent corrosion and degradation of the rebars, ensuring their durability and strength even in harsh weather conditions.

Q: What is the maximum length of steel rebars available?: The maximum length of steel rebars available varies depending on the specific manufacturer and supplier. However, in general, steel rebars are commonly available in lengths ranging from 6 meters (20 feet) to 18 meters (60 feet). These lengths are determined by factors such as transportation logistics, handling capabilities, and construction industry standards. It is important to consult with the manufacturer or supplier to determine the specific maximum length of steel rebars they offer.

Q: How do steel rebars help in load distribution within a structure?: Steel rebars, also referred to as reinforcing bars, are essential for the distribution of loads within a structure. They are extensively utilized in concrete structures, like buildings, bridges, and highways, to enhance their strength and durability. The main objective of steel rebars is to provide tensile strength to the concrete. While concrete is highly capable of withstanding compression, it is relatively frail when it comes to tension. Any structure exposed to loads, whether from the weight of the building itself or external forces, will encounter both compression and tension forces. By incorporating steel rebars into the concrete, they act as reinforcements and resist tensile forces. When an external load is applied to the structure, the rebars bear a significant portion of the generated tension forces. This prevents the concrete from cracking or failing under the applied load. Furthermore, steel rebars aid in the distribution of the load throughout the structure. When a load is imposed on a structure, it generates stress that is spread across the various components. The presence of rebars enables a more uniform distribution of these stresses, reducing the concentration of forces in specific areas. This prevents localized failures and ensures that the load is evenly dispersed across the structure, thereby improving its overall strength and stability. Another crucial aspect of steel rebars is their capacity to bond with concrete. The rough surface of the rebars prevents them from slipping or separating from the concrete, ensuring a robust bond between the two materials. This bond further enhances the distribution of loads by enabling the rebars to effectively transfer the tensile forces to the surrounding concrete. In conclusion, steel rebars play a critical role in the distribution of loads within a structure. They furnish the necessary tensile strength to withstand tension forces, distribute the load evenly across the structure, and bond with the concrete, guaranteeing a sturdy and stable construction. Without steel rebars, concrete structures would be considerably weaker and more prone to cracking or failure under load.

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