Iron rods for construction concrete for building metal

Iron rods for construction concrete for building metal

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1000 m.t.

Supply Capability:: 17497 m.t./month

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Specification

Standard:

AISI

Technique:

Hot Rolled

Shape:

Round

Surface Treatment:

Dry

Steel Grade:

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

Certification:

ISO

Thickness:

6-32m

Length:

5.8-12M

Net Weight:

1-2 MT

bars of steel commonly used in construction, especially for reinforcing concrete structures such as driveways,

foundations, walls, and columns. These bars come in different sizes and strength grades, and can be smooth

or may include deformations that provide greater adhesion for concrete poured over the bars. When used in poured

concrete, the bars are typically placed in a grid pattern, the concrete poured over them, and then readjusted to

maintain the proper shape while the concrete sets. Steel rebar can be purchased from a number of manufacturers

and is often found at construction retailers or large hardware stores

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

Iron rods for construction concrete for building metal

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.

Iron rods for construction concrete for building metal

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 tunneling and mining operations?: Yes, steel rebars can be used in tunneling and mining operations. Rebars, which are steel bars commonly used to reinforce concrete structures, can also be employed in underground construction projects such as tunnels and mines. These steel bars provide additional strength and stability to the structures in these environments, ensuring durability and safety. In tunneling projects, rebars are often embedded in shotcrete or concrete linings to enhance the structural integrity of the tunnel walls and prevent collapse. Similarly, in mining operations, rebars are used to reinforce the roofs, walls, and support structures within the mine, safeguarding against potential hazards such as rockfalls and cave-ins. The use of steel rebars in tunneling and mining operations is crucial for maintaining the integrity and stability of these underground structures.

Q:What are the guidelines for spacing and positioning steel rebars in concrete structures?: The guidelines for spacing and positioning steel rebars in concrete structures are critical to ensure the structural integrity and durability of the construction. Here are some key guidelines to follow: 1. Rebar Spacing: The spacing between steel rebars in concrete structures is determined by the structural engineer or designer. It is typically expressed in terms of center-to-center spacing or clear distance between rebars. The spacing depends on the load requirements, concrete strength, and other factors specific to the project. The most common spacing ranges from 4 to 12 inches. 2. Cover Depth: The concrete cover depth refers to the distance between the outer surface of the concrete and the nearest surface of the rebar. It is essential to provide adequate cover to protect the rebars from environmental factors, such as corrosion and fire. The cover depth is typically specified in the project's design and can vary depending on the concrete's exposure conditions. 3. Rebar Positioning: The proper positioning of rebars is crucial to ensure they are placed in the designated locations within the concrete structure. The rebars should be securely supported and maintained in the correct alignment during the concrete pouring process. The positioning requirements may include specific lap lengths, overlaps, or hooking of rebars at junctions to ensure proper load transfer and structural continuity. 4. Chair Supports: Rebar chair supports are widely used to maintain the correct spacing and elevation of the rebars within the concrete structure. These supports are placed under the rebars at regular intervals to prevent sagging or displacement during concrete placement. The appropriate chair support type and height should be selected based on the project's requirements and the diameter of the rebars. 5. Tying and Binding: Proper tying and binding of rebars are essential to ensure they remain in position and maintain the required spacing during the concrete pouring process. Rebars should be tied securely using wire or rebar ties at appropriate intervals, typically every 12-18 inches. The ties should be tight enough to prevent movement but not overly tight to avoid damaging the rebars or causing concrete segregation. 6. Concrete Consolidation: During concrete placement, it is crucial to properly consolidate the concrete around the rebars to eliminate air voids and ensure adequate bonding between the concrete and the rebars. Vibrators or other consolidation techniques should be used to achieve proper compaction and ensure the rebars are thoroughly embedded in the concrete. Compliance with the guidelines for spacing and positioning steel rebars in concrete structures is essential to guarantee the structural strength, durability, and safety of the construction. It is crucial to consult and follow the project's design specifications and engage qualified professionals to ensure proper execution and adherence to these guidelines.

Q:How do steel rebars affect the overall durability of marine structures?: Enhancing the overall durability of marine structures, steel rebars play a vital role. The high tensile strength and corrosion resistance of these rebars ensure structural stability and prevent degradation caused by saltwater, waves, and harsh weather conditions. Corrosion is a major challenge faced by marine structures due to constant exposure to saltwater, weakening the structure over time. To combat this, steel rebars are often coated with anti-corrosive materials like epoxy or galvanized coatings. These coatings act as a protective layer, preventing the penetration of saltwater and other corrosive agents, ensuring the longevity of the marine structure. In addition to corrosion resistance, steel rebars are known for their high tensile strength, allowing them to withstand the tremendous forces of waves and currents. They reinforce the concrete used in marine structures, preventing cracks or failure under excessive loads. This reinforcement enhances the structural integrity of the marine structure, making it more resilient against external forces. Moreover, steel rebars offer flexibility in design and construction, allowing for the creation of complex and robust marine structures. Engineers can bend and shape the rebars as needed, designing structures that can better withstand the unique challenges of the marine environment. This flexibility also streamlines the construction process, making it more efficient and cost-effective. Overall, steel rebars make a significant contribution to the durability of marine structures by providing corrosion resistance, enhancing structural stability, and enabling innovative design solutions. Their presence ensures the longevity and reliability of marine structures, enabling them to withstand the harsh conditions of the marine environment for extended periods.

Q:What are the factors to consider while calculating the required number of steel rebars in a project?: Some factors to consider while calculating the required number of steel rebars in a project include the structural design and requirements, the load-bearing capacity needed, the dimensions and layout of the structure, the type and grade of steel rebar being used, and any applicable building codes and regulations. Additionally, factors such as the spacing between rebars, the concrete cover thickness, and any potential corrosion protection measures may also need to be considered.

Q:What is the recommended diameter of steel rebars for column reinforcement?: The recommended diameter of steel rebars for column reinforcement can vary depending on factors such as the size and design of the column, the load it will bear, and the structural requirements. However, commonly used diameters for column reinforcement range from 12mm to 32mm.

Q:What are the common applications of steel rebars?: Steel rebars are commonly used in the construction industry for reinforcing concrete structures such as buildings, bridges, highways, and dams. They provide strength, durability, and stability to the concrete, enhancing its load-bearing capacity and resistance to tension and bending forces.

Q:What is the cost of steel rebars compared to other construction materials?: Steel rebars are generally more cost-effective compared to other construction materials such as concrete or wood. While the exact cost may vary depending on factors like location and market conditions, steel rebars are often preferred due to their durability, strength, and relatively lower price point.

Q:How are steel rebars marked for identification on construction sites?: Various methods are commonly used to mark steel rebars for identification on construction sites. The primary method involves attaching tags or labels to the rebars, which contain crucial information like the rebar's diameter, grade, length, and any necessary specifications or codes. In addition to tags, rebars can also be marked with paint or ink. This can be achieved by either spraying or stenciling the required information directly onto the rebar's surface. Paint or ink markings are typically used for temporary identification or when using tags is not feasible. Another marking method involves using colored plastic or vinyl caps on the ends of the rebars. These caps are usually color-coded to indicate different characteristics, such as rebar size or type. This allows for easy visual identification on the construction site. It's important to note that the specific method of marking rebars may vary based on local regulations, project requirements, or the preferences of the construction company or engineer. The purpose of these markings is to ensure that rebars can be easily identified and sorted during construction, promoting proper installation and adherence to design specifications.

Q:Two grade steel and three grade steel difference, the construction of the use of thread steel in general how to use the level?: The difference is mainly in strength. The higher the grade, the greater the tensile strength.

Q:What is the average tensile strength of steel rebars?: Steel rebars typically have an average tensile strength ranging between 400 and 600 megapascals (MPa). It should be noted that the grade and type of steel used in the manufacturing process can cause variations in the specific tensile strength. Tensile strengths above 600 MPa can be achieved with higher grades of steel rebars. Moreover, the tensile strength of the rebars can also be influenced by factors like their diameter and surface condition.

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