Hot rolled Reinforcing Steel rebar 6-12m

Hot rolled Reinforcing Steel rebar 6-12m

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 1000 m.t.

Supply Capability:: 17497 m.t./month

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Item specifice

Standard:

AISI,EN

Technique:

Hot Rolled

Shape:

U Channel

Surface Treatment:

Dry

Steel Grade:

Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400

Certification:

ISO

Thickness:

6-40mm

Length:

6M/12M

Net Weight:

1-2.5MT

Rebar has ridges that bind it mechanically to the concrete with friction, it can still be pulled out of the concrete

under high stresses, an occurrence that often precedes a larger-scale collapse of the structure. To prevent such

a failure, rebar is either deeply embedded into adjacent structural members, or bent and hooked at the ends to lock

it around the concrete and other rebars. This first approach increases the friction locking the bar into place while the

second makes use of the high compressive strength of concrete.

Product Description :

Chemical composition (%):	Steel		C		Si	Mn		P	S		Ceq
	HRB335		0.25		0.80	1.60		0.045	0.045		0.52
	HRB400										0.54
	HRB500										0.55
Mechanical properties	Steel	Rel/ MPa		Rm/ MPa			A/ %			Agt/ %
		≥
	HRB335	335		455			17			7.5
	HRB400	400		540			16
	HRB500	500		630			15
Package:	Standard export packing or as customer's request
Application:	Construction, building, bridge, road. ect
Payment terms	1).100% irrevocable L/C at sight. 2).30% T/T prepaid and the balance against the copy of B/L. 3).30% T/T prepaid and the balance against L/C
Delivery time	15-30 days after receipt of L/C or deposit by T/T

Hot rolled Reinforcing Steel rebar 6-12m

Features

1、Pure steel quality, stable chemical contents, small tolerance.
2、Constant Quality, good drawing performance.
3、High dimension accuracy degree, accuracy degree of Level C up to 80%, smooth surface, less scale, easy to be pickled.
4、Automatic bundling with 4 lines by Machine in tidy and good looks
5、Big high quality percentage, small coil percentage, and heavy coil weight for Hard Coil.
6、High sorbitizing percentage.

Packing:

In bundles, each bundle weight 3.5 tons. Load by container or by bulk verssel.

Hot rolled Reinforcing Steel rebar 6-12m

FAQ:

1.Q: What's your MOQ(minimum order quantity)?

A: One full container, mixed acceptable .

2. Q: What's your packing methods?

A: Packed in bundle or bulk ..

3. Q: How can I buy CNBM products in my country?

A:Please send us an inquiry or email ,we will reply to you if there is distributor in your country

4. Q: Can we visit your factory?

A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.

5. Q: How long does it take to get the product if i place an order?

A:With the process of your requirements,we will pack and deliver in 3-7 days. If it is by sea shipment,it will take 15-45 days depending on different locations

Q:Can steel rebars be used in reinforced masonry?: Yes, steel rebars can be used in reinforced masonry. Reinforced masonry refers to the use of steel reinforcement within masonry walls, columns, or other structural elements to increase their strength and resistance to various forces. Steel rebars are commonly used as reinforcement in reinforced masonry due to their high tensile strength and ability to withstand bending and stretching forces. The rebars are typically embedded within the masonry units or mortar, creating a composite structure that can resist compressive, tensile, and shear forces more effectively. The use of steel rebars in reinforced masonry enhances the structural integrity, durability, and overall performance of the masonry construction, making it a widely accepted and practiced technique in the industry.

Q:What are the different corrosion protection methods for steel rebars?: There are several corrosion protection methods available for steel rebars, which are commonly used in reinforced concrete structures. These methods aim to prevent or minimize the corrosion of the steel rebars, as corrosion can significantly weaken the overall structure. 1. Concrete Cover: The most common corrosion protection method is providing an adequate thickness of concrete cover over the steel rebars. The concrete acts as a physical barrier, preventing exposure of the rebars to corrosive elements. 2. Galvanization: Galvanizing involves coating the steel rebars with a layer of zinc. This protective layer acts as a sacrificial anode, corroding before the steel rebars. Galvanization significantly enhances the rebars' resistance to corrosion. 3. Epoxy Coating: Epoxy coating is a popular corrosion protection method where a layer of epoxy resin is applied over the steel rebars. The epoxy acts as a barrier, preventing moisture and corrosive substances from reaching the rebars. 4. Cathodic Protection: Cathodic protection is an electrochemical method that involves the application of a sacrificial anode or an impressed current system. In a sacrificial anode system, a more reactive metal, such as zinc or magnesium, is connected to the steel rebars, sacrificing itself and preventing corrosion. In an impressed current system, an external power source is used to provide a protective current to the rebars, preventing corrosion. 5. Corrosion Inhibitors: Corrosion inhibitors are chemicals added to the concrete mix or applied as a surface treatment to the rebars. These inhibitors form a protective film on the rebars' surface, preventing corrosion by blocking the access of corrosive agents. 6. Stainless Steel Rebars: Using stainless steel rebars is an effective corrosion protection method. Stainless steel has a high resistance to corrosion, making it suitable for structures exposed to aggressive environments. It is important to note that the selection of the appropriate corrosion protection method depends on various factors, including the environmental conditions, expected service life of the structure, and cost considerations. Additionally, regular inspection and maintenance of the corrosion protection system are essential to ensure its effectiveness over time.

Q:What are the different types of steel rebars used in railway construction?: There are primarily four types of steel rebars used in railway construction: plain carbon steel rebars, stainless steel rebars, epoxy-coated rebars, and galvanized rebars. Each type offers specific characteristics and benefits, such as corrosion resistance, durability, and strength, to ensure the longevity and stability of railway infrastructure.

Q:Why is thread steel thinner than crude?: Thread steel is used for the construction of reinforced concrete facilities, his material is generally low alloy steel grades is generally 16Mn (16 Mn low-alloy steel), or 45 carbon just, their yield strength is above 350Mpa, tensile strength 500Mpa, low carbon steel round steel than ordinary much higher (after heat treatment of the steel strength than low carbon steel nearly twice as high or higher)

Q:What are the common defects observed in steel rebars?: Steel rebars can exhibit several common defects, including rust and corrosion, cracks and fractures, lack of bond, bent or deformed shapes, dimensional inaccuracies, and inclusions or impurities. When exposed to moisture and oxygen, rebars are susceptible to rust and corrosion, which weaken their structural integrity and compromise the overall strength of concrete structures. Various factors such as excessive bending, improper handling during transportation and installation, or overloading can lead to cracks and fractures in rebars, reducing their load-bearing capacity and affecting the performance of concrete structures. Adequate bond between rebars and the surrounding concrete is crucial for effective load transfer, but poor surface preparation, improper placement, or the presence of contaminants can result in a lack of bond and reduced structural strength. Improper bending techniques, excessive bending, or mishandling can result in rebars with incorrect shapes or deformities, compromising their structural integrity and load-bearing capacity. Steel rebars must conform to specific dimensional tolerances to ensure proper fit and alignment within concrete structures, but manufacturing errors or improper storage and handling can cause dimensional inaccuracies, leading to difficulties during installation and potentially impacting structural performance. Ideally, steel rebars should be free from any inclusions or impurities that can weaken the material, but inadequate quality control during the manufacturing process can result in the presence of foreign materials or impurities, reducing the strength and durability of rebars. To minimize these defects and ensure the long-term structural integrity of concrete structures, it is important to implement proper quality control measures and adhere to industry standards during the manufacturing, transportation, and installation of steel rebars.

Q:What is the process of pre-stressing steel rebars?: The process of pre-stressing steel rebars involves applying a predetermined amount of stress or force to the rebars before they are subjected to loading. This technique is commonly used in the construction industry to improve the structural strength and durability of concrete structures. The process typically starts with the selection of high-strength steel rebars that have good tensile strength properties. These rebars are usually made from carbon steel or alloy steel and come in various sizes and shapes, depending on the specific application. Once the rebars are selected, they are cleaned and coated with a protective layer to prevent corrosion. After that, the rebars are placed into the desired position within the concrete structure, such as beams, columns, or slabs, according to the design specifications. Next, the pre-stressing process begins. There are two primary methods for pre-stressing steel rebars: pre-tensioning and post-tensioning. In pre-tensioning, the rebars are initially tensioned by fixing them to an anchorage point or a strong frame. The opposite end of the rebars is then pulled using hydraulic jacks or mechanical devices, applying a significant amount of force. Once the desired stress is achieved, the rebars are secured in their stressed position by casting concrete around them. After the concrete has hardened, the jacks or devices are released, transferring the stress to the rebars. In post-tensioning, the rebars are first placed into the concrete structure without any initial tension. After the concrete has hardened, a series of ducts or channels are created within the structure, running along the path of the rebars. High-strength steel strands or cables are then inserted through these ducts. The strands are anchored at one end of the structure and tensioned using hydraulic jacks or similar devices. This tensioning process applies a force to the rebars, which is transferred to the concrete, compressing it. Once the desired stress is achieved, the strands are secured and the ducts are filled with grout or mortar to protect them from corrosion. Both pre-tensioning and post-tensioning techniques result in pre-stressed steel rebars that provide several benefits to concrete structures. These include increased load-carrying capacity, improved resistance to cracking and deformation, enhanced durability, and overall better structural performance. The process of pre-stressing steel rebars is a vital aspect of modern construction practices, ensuring the longevity and safety of various types of concrete structures.

Q:What is the cost of steel rebars?: Different factors, including steel grade, market conditions, and location, can cause the price of steel rebars to vary. Generally, the price ranges from $500 to $800 per metric ton. Nevertheless, it is crucial to consider that prices can change due to factors like supply and demand, raw material expenses, and any taxes or tariffs imposed on steel imports. To obtain the most accurate and current pricing information, it is advisable to reach out to local suppliers or consult market reports.

Q:How do steel rebars help in preventing cracks in concrete?: Steel rebars help in preventing cracks in concrete by providing reinforcement and added strength to the structure. When concrete is poured, it is strong in compression but weak in tension. This means that it can withstand forces that push or compress it, but it is more susceptible to cracking under pulling or bending forces. Steel rebars are embedded within the concrete to counteract this weakness. The rebars act as a framework, distributing the tensile forces throughout the concrete, preventing cracks from forming and spreading. They reinforce the structure, making it more resistant to bending, shearing, and other external forces. Moreover, steel rebars help in preventing cracks by enhancing the overall structural integrity of the concrete. When concrete undergoes shrinkage during the drying and curing process, it tends to crack. However, with the presence of rebars, the tensile forces caused by shrinkage are absorbed by the steel, reducing or eliminating the formation of cracks. In addition, steel rebars can also prevent cracks in concrete by providing resistance against temperature changes and external loads. They help to control the expansion and contraction of the concrete due to temperature fluctuations, minimizing the risk of cracking. Furthermore, rebars reinforce the concrete against heavy loads, such as those caused by traffic or seismic activity, ensuring that the structure remains intact and crack-free. Overall, steel rebars play a crucial role in preventing cracks in concrete by reinforcing the material, distributing forces, absorbing tensile stresses, and enhancing structural integrity. Their presence significantly improves the durability and longevity of concrete structures, making them more resistant to cracking and ensuring their stability over time.

Q:What is the difference between carbon steel and stainless steel rebars?: Both carbon steel and stainless steel rebars are utilized in construction as types of steel reinforcement. However, they differ significantly in their composition and properties. Carbon steel rebars consist of a combination of iron and carbon, with trace amounts of other elements like manganese and copper. The carbon content in these rebars typically ranges from 0.15% to 0.60%. They possess strength, durability, and cost-effectiveness. Their tensile strength is crucial for reinforcing concrete structures. Nevertheless, they are prone to corrosion if not adequately protected, especially in environments with high moisture or exposure to chemicals. On the contrary, stainless steel rebars are created by combining iron, chromium, nickel, and other alloying elements. The chromium content in stainless steel usually exceeds 10.5%, leading to the formation of a protective layer of chromium oxide on the rebar's surface, which prevents corrosion. Stainless steel rebars exhibit exceptional corrosion resistance, even in harsh environments with high humidity, saltwater, or exposure to chemicals. Additionally, they are highly durable and possess high tensile strength, similar to carbon steel rebars. The primary distinction between carbon steel and stainless steel rebars lies in their corrosion resistance. Carbon steel rebars necessitate the application of protective coatings like epoxy or galvanization to prevent corrosion. In contrast, stainless steel rebars possess inherent corrosion resistance due to the presence of the chromium oxide layer, eliminating the need for additional coatings. Another differing factor is the cost. Carbon steel rebars are generally more affordable compared to stainless steel rebars. However, the total project cost should also consider the long-term maintenance expenses associated with corrosion protection measures required for carbon steel rebars. To summarize, carbon steel rebars are strong and cost-effective but require supplementary corrosion protection, while stainless steel rebars exhibit excellent corrosion resistance and durability at a higher cost. The selection between the two depends on the specific project requirements, budget constraints, and anticipated environmental conditions.

Q:Can steel rebars be used in structures with high wind loads?: Yes, steel rebars can be used in structures with high wind loads. Steel rebars provide strength and durability, making them suitable for reinforcing concrete structures against the forces exerted by high wind loads.

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