Factory 12mm 16mm 20mm A400 Reinforcement Steel Rebar

Factory 12mm 16mm 20mm A400 Reinforcement Steel Rebar System 1

Factory 12mm 16mm 20mm A400 Reinforcement Steel Rebar System 2

Factory 12mm 16mm 20mm A400 Reinforcement Steel Rebar System 3

Factory 12mm 16mm 20mm A400 Reinforcement Steel Rebar System 4

Factory 12mm 16mm 20mm A400 Reinforcement 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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Factory 12mm 16mm 20mm A400 Reinforcement Steel Rebar

Details of the Factory 12mm 16mm 20mm A400 Reinforcement 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 Factory 12mm 16mm 20mm A400 Reinforcement 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.

Factory 12mm 16mm 20mm A400 Reinforcement Steel Rebar

Packaging & Delivery of the Factory 12mm 16mm 20mm A400 Reinforcement 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 are the guidelines for ensuring proper bond between steel rebars and concrete?: The guidelines for ensuring proper bond between steel rebars and concrete are crucial to ensure the structural integrity and performance of reinforced concrete structures. Here are some key guidelines to follow: 1. Proper Bar Placement: The rebars should be positioned within the concrete member as per the design specifications, including the required spacing, cover, and lap lengths. The spacing between rebars and the concrete surface should be maintained to provide enough concrete cover and prevent corrosion. 2. Adequate Surface Preparation: The steel rebars should be free from any loose rust, scale, or contaminants that could hinder the bond with the concrete. Surface preparation techniques such as wire brushing, sandblasting, or using a high-pressure water jet can be employed to clean the rebars effectively. 3. Mechanical Bond: Ribbed or deformed rebars offer better mechanical bond with concrete compared to smooth bars. The surface deformations increase the contact area between the rebar and the concrete, 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 crucial to achieve the desired bond performance. 5. Concrete Quality: The quality of concrete, including its strength, workability, and curing, plays a significant role in achieving a proper bond with steel rebars. The concrete mix should be proportioned correctly, ensuring adequate cement content, appropriate water-to-cement ratio, and proper compaction during placement. 6. Adequate Concrete Cover: Sufficient 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 multiple rebars need to be connected, proper splicing techniques should be employed to ensure a continuous and strong bond. Lap splices, mechanical couplers, or welded splices can be used depending on the design requirements and project specifications. 8. Effective Vibrations: 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. Avoidance 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: Finally, 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, taking into account various factors such as loadings, environmental conditions, and durability requirements.

Q: Can steel rebars be used in the construction of stadiums for indoor sports?: Yes, steel rebars can be used in the construction of stadiums for indoor sports. Steel rebars are commonly used in the construction industry to provide reinforcement and strength to concrete structures. In the case of stadiums, steel rebars can be used to reinforce the concrete columns, beams, and slabs that make up the foundation, walls, and floors of the indoor sports facility. This ensures the structural integrity and durability of the stadium, making it capable of withstanding heavy loads and providing a safe environment for athletes and spectators.

Q: What are the common challenges in handling steel rebars during construction?: There are several common challenges in handling steel rebars during construction. One of the main challenges is the weight and size of the rebars. Steel rebars can be quite heavy and bulky, making them difficult to lift and maneuver on the construction site. This can pose a risk of injuries to the workers if proper lifting techniques and equipment are not used. Another challenge is the proper storage and organization of the rebars. Since rebars come in various lengths and sizes, it is important to have a well-organized storage area to keep them separated and easily accessible. Failure to do so can result in delays and inefficiencies during construction. Additionally, steel rebars are prone to rust and corrosion if not properly handled and stored. Exposure to moisture, rain, or even excessive humidity can cause the rebars to deteriorate, leading to weakened structures. Therefore, it is crucial to protect the rebars from these elements and store them in a dry and well-ventilated area. Furthermore, the placement and alignment of rebars within concrete structures can be challenging. It requires skilled labor and precision to ensure that rebars are correctly positioned according to the construction plans. Any errors in placement can compromise the structural integrity of the building, leading to safety concerns and costly repairs. Lastly, the transportation of rebars to the construction site can be a logistical challenge. Coordinating the delivery of rebars and ensuring they arrive on time and in the required quantities can be complex, especially in large-scale construction projects. Delays in receiving the rebars can cause project delays and additional costs. Overall, handling steel rebars during construction requires careful planning, proper storage, skilled labor, and adherence to safety protocols. By addressing these common challenges, construction projects can ensure the successful and efficient use of steel rebars.

Q: Are steel rebars suitable for use in structures with high vibration levels?: Steel rebars are commonly used in structures with high vibration levels. The strength and durability of steel rebars make them suitable for such applications. When structures are subjected to high vibration levels, the rebars help to provide stability and prevent any potential damage or failure. Steel rebars have excellent tensile strength, which enables them to withstand the dynamic forces generated by vibration. Additionally, steel rebars have good ductility, allowing them to absorb and dissipate energy during vibrations, thereby reducing the risk of structural damage. Proper design and installation techniques, including the use of appropriate reinforcement detailing, can further enhance the performance of steel rebars in structures with high vibration levels. Overall, steel rebars are a reliable choice for ensuring the structural integrity and safety of buildings and infrastructure exposed to significant vibrations.

Q: What is the allowable stress for steel rebars?: The allowable stress for steel rebars varies depending on the specific grade or type of steel being used. However, in general, steel rebars typically have an allowable stress range of 40,000 to 60,000 pounds per square inch (psi).

Q: What are the different types of steel rebars used in beam reinforcement?: There are several types of steel rebars commonly used in beam reinforcement. These include: 1. Mild Steel Rebars (MSR): These rebars are made from low carbon steel and are widely used due to their affordability and availability. They have a yield strength of 250 MPa and are suitable for general construction purposes. 2. High Yield Strength Rebars (HYSD): These rebars have a higher yield strength compared to mild steel rebars, typically ranging from 415 MPa to 600 MPa. HYSD rebars are commonly used in heavy-duty and high-stress applications, such as bridges and high-rise buildings. 3. Carbon Steel Rebars: These rebars are made from carbon steel, which contains a higher carbon content than mild steel rebars. Carbon steel rebars offer improved strength and ductility, making them suitable for seismic zones and areas prone to corrosion. 4. Stainless Steel Rebars: These rebars are made from stainless steel, which contains a high percentage of chromium and other alloying elements. Stainless steel rebars offer excellent corrosion resistance, making them ideal for structures exposed to harsh environments, such as marine applications or chemical plants. 5. Epoxy-Coated Rebars: These rebars are coated with an epoxy layer to provide additional protection against corrosion. Epoxy-coated rebars are commonly used in structures exposed to moisture or chloride-rich environments, such as coastal regions or areas with deicing salts. It is important to consider the specific requirements and conditions of the project when selecting the type of steel rebar for beam reinforcement. Consulting with structural engineers or industry professionals is recommended to ensure appropriate material selection for optimal performance and longevity of the reinforced beam.

Q: How are steel rebars protected against chemical attacks?: Corrosion protection is a process that shields steel rebars from chemical attacks. Various techniques and materials are utilized to prevent corrosive substances from harming the rebar. One method commonly employed is the application of protective coatings. These coatings, such as epoxy or zinc, create a barrier on the rebar's surface, obstructing corrosive substances from reaching the steel. Moreover, these coatings offer added protection against moisture and other environmental factors that contribute to corrosion. Corrosion inhibitors are another means of safeguarding the rebars. These chemicals can be added to the concrete mix or directly applied to the rebar. By forming a protective layer on the steel's surface, corrosion inhibitors impede the corrosion process. These inhibitors can be organic or inorganic compounds, targeting specific corrosion mechanisms. In certain cases, stainless steel rebars are used to protect against chemical attacks. Stainless steel possesses greater resistance to corrosion in comparison to regular steel rebars. The presence of chromium creates a passive layer on the steel's surface, guarding it against chemical reactions. Stainless steel rebars are frequently utilized in highly corrosive environments, such as marine structures or wastewater treatment plants. Regular maintenance and inspection play a crucial role in safeguarding steel rebars against chemical attacks. Any signs of damage or corrosion should be promptly addressed. Regular cleaning and removal of corrosive substances that accumulate on the rebars also aid in preventing chemical attacks. In conclusion, a combination of protective coatings, corrosion inhibitors, stainless steel rebars, and regular maintenance is essential for protecting steel rebars against chemical attacks. These measures prolong the rebars' lifespan and uphold the structural integrity of concrete structures.

Q: What is the minimum lap length required for steel rebars in concrete?: The minimum lap length required for steel rebars in concrete varies depending on the specific design and requirements of the structure, but it is generally recommended to follow the guidelines provided by relevant building codes and standards. These guidelines consider factors such as the diameter of the rebar, the concrete strength, and the structural loadings to determine the minimum lap length necessary for ensuring proper bonding and structural integrity. It is essential to consult the appropriate building codes or a structural engineer to accurately determine the minimum lap length for steel rebars in a concrete structure.

Q: How are steel rebars tested for quality?: Steel rebars are tested for quality through various methods such as visual inspection, dimensional checks, chemical composition analysis, and mechanical testing. Visual inspection ensures that rebars are free from surface defects and meet the required specifications. Dimensional checks involve measuring the diameter, length, and shape of the rebars to ensure they meet the required standards. Chemical composition analysis is conducted to verify the steel's composition, ensuring it meets the necessary strength and durability requirements. Mechanical testing involves subjecting the rebars to tension, bending, or impact tests to determine their mechanical properties and ensure they can withstand the intended use. These rigorous testing procedures help ensure the quality and reliability of steel rebars.

Q: How are steel rebars protected during construction?: Steel rebars are protected during construction by applying a layer of protective coating, such as epoxy or zinc, to prevent corrosion. Additionally, rebars are often encased in concrete to provide further protection from environmental factors and ensure their longevity.

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