HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed Steel Rebar

HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed Steel Rebar System 1

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HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed 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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HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed Steel Rebar

Details of the HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed 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 HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed 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.

HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed Steel Rebar

Packaging & Delivery of the HRB400 Tianjin Steel Rebar Manufacturer Supply Deformed 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:How do steel rebars resist alkali-silica reaction in concrete?: Steel rebars resist alkali-silica reaction in concrete primarily due to their passive film and the alkaline environment of the concrete. When steel rebars are embedded in concrete, they form a passive film on their surface. This film acts as a protective layer that prevents direct contact between the steel and the aggressive alkali-silica reactive aggregates present in the concrete. This passive film is formed due to the high pH of the alkaline environment created by the cement in the concrete, which typically ranges between pH 12-13. This high pH helps in creating a protective oxide layer on the surface of the steel rebar, preventing it from coming into contact with the reactive elements in the aggregates. Furthermore, the alkaline environment of the concrete helps in maintaining the passivity of the steel rebars. The alkalinity of the concrete allows the passive film to remain stable and intact, providing a continuous barrier against the alkali-silica reaction. As long as the pH of the concrete remains high, the steel rebars will continue to resist the reaction. It is worth noting that the thickness and quality of the passive film on the steel rebars are crucial in ensuring their resistance to alkali-silica reaction. Any factors that can compromise the integrity of this film, such as carbonation or chloride contamination, may increase the risk of the reaction occurring. In summary, steel rebars resist alkali-silica reaction in concrete due to the presence of a passive film on their surface, which is formed by the alkaline environment of the concrete. This film acts as a protective barrier, preventing the steel from coming into direct contact with the reactive aggregates and thus, mitigating the likelihood of the reaction occurring.

Q:Can steel rebars be used in industrial flooring?: Yes, steel rebars can be used in industrial flooring. Steel rebars are commonly used in concrete construction, including industrial flooring, due to their high tensile strength and durability. They are typically placed within the concrete to reinforce it and provide added strength to support heavy loads and resist cracking. The use of steel rebars in industrial flooring helps increase its load-bearing capacity and ensures the longevity and structural integrity of the floor. Additionally, steel rebars can be easily welded or connected to form a grid or mesh, which further enhances the strength and stability of the floor. Therefore, steel rebars are a suitable choice for industrial flooring applications.

Q:Can steel rebars be used in high-rise buildings?: Yes, steel rebars can be used in high-rise buildings. Steel rebars are commonly used as reinforcement in concrete structures, including high-rise buildings, to increase their strength and durability. The use of steel rebars helps to distribute the load and enhance the structural integrity of the building, making them a suitable choice for high-rise construction.

Q:How do steel rebars affect the overall creep and shrinkage of concrete structures?: Steel rebars can have a significant impact on the overall creep and shrinkage of concrete structures. Creep refers to the long-term deformation of concrete under sustained load, while shrinkage is the reduction in volume that occurs as the concrete dries and hardens. Steel rebars play a crucial role in controlling and mitigating both creep and shrinkage. When embedded in concrete, rebars provide tensile strength and improve the overall load-carrying capacity of the structure. This reinforcement allows for the distribution of stress and helps limit the amount of deformation that occurs over time. In terms of creep, steel rebars help minimize its effects by reducing the amount of stress transferred to the concrete. By absorbing a significant portion of the applied load, rebars alleviate the strain on the concrete, thus reducing the creep deformation. Additionally, the presence of rebars helps control the cracking that may occur due to creep, further preserving the structural integrity of the concrete. Regarding shrinkage, steel rebars can also influence its magnitude. As concrete shrinks during the drying and hardening process, the rebars act as restraints, preventing excessive volume reduction. By resisting the contraction forces, rebars help minimize the potential for cracking and maintain the structural stability of the concrete. It is important to note that the choice of rebar type, size, and spacing can affect the overall impact on creep and shrinkage. Proper design and placement of rebars, including appropriate cover thickness, are necessary to ensure optimum performance and minimize the potential for long-term deformations. In summary, steel rebars play a vital role in controlling the overall creep and shrinkage of concrete structures. By providing reinforcement and distributing stress, rebars help limit deformation, prevent cracking, and maintain the structural integrity of the concrete over time.

Q:What is the role of steel rebars in ensuring occupant safety?: Steel rebars play a crucial role in ensuring occupant safety in various structures, particularly in buildings and infrastructure. These reinforced steel bars are commonly used in concrete construction to enhance the strength and durability of the structure, ultimately safeguarding the individuals residing or working within them. The primary function of steel rebars is to provide structural reinforcement to concrete elements, such as columns, beams, and slabs. By incorporating rebars into the concrete, the overall load-bearing capacity of the structure is significantly increased, allowing it to withstand various external forces and loads. This greatly reduces the risk of collapse or structural failure, which could potentially harm the occupants. During seismic events, such as earthquakes, steel rebars play a critical role in dissipating and distributing the energy exerted on the structure. The ductility and tensile strength of steel allow it to absorb and distribute the seismic forces, reducing the chances of a sudden structural failure. This ensures that the occupants are protected from the potential hazards associated with seismic activity. Moreover, steel rebars enhance the fire resistance of concrete structures. While concrete itself possesses good fire-resistant properties, the inclusion of steel rebars further reinforces this resistance. Steel has a high melting point, and its thermal conductivity is relatively low compared to other materials. This means that steel rebars can withstand high temperatures for an extended period, ensuring the structural integrity of the building during a fire and providing occupants with a safe evacuation route. In addition to their structural benefits, steel rebars also contribute to the long-term durability and maintenance of the structure. By preventing cracks and minimizing the effects of corrosion, rebars help maintain the structural integrity of the concrete over time. This ensures that the occupants are not exposed to potential hazards caused by the deterioration of the structure. Overall, the role of steel rebars in ensuring occupant safety is indispensable. They provide structural reinforcement, increase load-bearing capacity, enhance fire resistance, and contribute to the long-term durability of a structure. By incorporating steel rebars into concrete construction, the risk of collapse, structural failure, and other potential hazards is significantly reduced, ultimately providing a safe environment for the occupants.

Q:How do steel rebars affect the overall maintenance requirements of concrete structures?: Steel rebars, being strong and durable, enhance the structural integrity of concrete structures. By providing reinforcement, rebars help in distributing the load and increasing the resistance to cracking and tension. This leads to reduced maintenance requirements for concrete structures as they become more resistant to wear and tear, environmental factors, and potential structural failures.

Q:What is the yield strength of different grades of steel rebars?: The yield strength of different grades of steel rebars varies depending on the specific grade. Generally, common grades of steel rebars such as Grade 40, Grade 60, and Grade 75 have yield strengths of approximately 40,000 psi, 60,000 psi, and 75,000 psi respectively. However, it is important to note that these values can vary slightly depending on the specific standard or specification being followed.

Q:What are the different types of steel rebars used in underground constructions?: There are several different types of steel rebars that are commonly used in underground constructions. These rebars are used to reinforce concrete structures and provide additional strength and durability. 1. Carbon Steel Rebars: Carbon steel rebars are the most commonly used type of rebars in underground constructions. They are made from carbon steel and have high tensile strength, making them suitable for various applications. 2. Epoxy-Coated Rebars: Epoxy-coated rebars are carbon steel rebars that are coated with an epoxy layer. This coating provides corrosion resistance, making them ideal for underground constructions where moisture and chemicals are present. 3. Stainless Steel Rebars: Stainless steel rebars are highly resistant to corrosion and have excellent strength properties. They are often used in underground constructions where extreme environmental conditions, such as high humidity or saltwater exposure, are expected. 4. Galvanized Rebars: Galvanized rebars are carbon steel rebars that have been coated with a layer of zinc. This coating provides enhanced corrosion resistance, making them suitable for underground constructions in areas with high levels of moisture or exposure to chemicals. 5. Fiberglass Rebars: Fiberglass rebars are made from glass fibers embedded in a resin matrix. They are lightweight, corrosion-resistant, and have high tensile strength. Fiberglass rebars are often used in underground constructions where non-magnetic properties are required, such as near sensitive equipment or in areas with electromagnetic interference concerns. Each type of steel rebar has its own advantages and is selected based on the specific requirements of the underground construction project. Factors such as environmental conditions, load-bearing capacity, and expected lifespan are considered when choosing the appropriate type of steel rebar for a particular application.

Q:What is the process of galvanizing steel rebars?: The process of galvanizing steel rebars involves the application of a layer of zinc to the surface of the rebar in order to prevent corrosion and prolong its lifespan. The process typically consists of the following steps: 1. Surface Preparation: The steel rebars are cleaned thoroughly to eliminate any dirt, oil, or scale from the surface. This is typically achieved through the use of chemical cleaning agents and mechanical methods, such as sandblasting or shot blasting. 2. Pickling: Once cleaned, the rebars are submerged in a pickling solution, usually a mixture of hydrochloric acid and water. This solution eliminates any remaining impurities or oxides from the surface of the rebars. 3. Fluxing: The pickled rebars are then rinsed to eliminate any residual acid and are immersed in a flux solution. The flux solution aids in the removal of any remaining oxides and ensures proper adhesion of the zinc coating. 4. Galvanizing: The fluxed rebars are then dipped into a molten zinc bath. The temperature of the zinc bath is typically kept between 815 to 850 degrees Fahrenheit (435 to 455 degrees Celsius). The rebars are carefully immersed and then slowly withdrawn to allow excess zinc to drain off. 5. Quenching: After the galvanizing process, the rebars may be rapidly cooled in a specialized solution to stabilize the zinc coating. This step helps to prevent the excessive formation of zinc oxide on the surface. 6. Inspection: Once the galvanized rebars have cooled down, they undergo a comprehensive inspection to ensure the quality of the coating. Visual inspection, thickness measurement, and adhesion tests are commonly conducted to assess the integrity of the zinc coating. Overall, the galvanizing process provides a robust and effective protective coating for steel rebars, rendering them highly resistant to corrosion and extending their lifespan in a variety of applications, including construction, reinforcement, and infrastructure projects.

Q:Are steel rebars susceptible to corrosion?: Yes, steel rebars are susceptible to corrosion. Corrosion is a natural process that occurs when steel is exposed to moisture, oxygen, and other environmental factors. When steel rebars are used in concrete structures, they are exposed to the elements and can come in contact with water or moisture, which can lead to the formation of rust. This rust can weaken the rebars and eventually compromise the structural integrity of the concrete. To prevent corrosion, various protective measures can be taken, such as applying a protective coating or using corrosion-resistant steel rebars. Regular maintenance and inspection of the concrete structures are also crucial to detect and address any signs of corrosion in a timely manner.

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