Reinforcing Steel Bar for Concrete System 1

Reinforcing Steel Bar for Concrete

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Loading Port:: China Main Port

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Product Description:

OKorder is offering Reinforcing Steel Bar for Concrete at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to African, South American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

Reinforcing Steel Bar for Concrete are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

Product Advantages:

OKorder's Reinforcing Steel Bar for Concrete are durable, strong, and wide variety of sizes.

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Manufacture: Hot rolled

Grade: HRB335

Size: 6mm-25mm

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

DEFORMED BAR
SIZE d(mm)	theoretical kg/m
6	0.222
8	0.395
10	0.617
12	0.888
14	1.21
16	1.58
18	2
20	2.47
22	2.98
25	3.85
28	4.83
32	6.31

Grade	Technical data of the original chemical composition (%)
	C	Mn	Si	S	P	B
HRB335	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045	>0.0008
	Physics capability
	Yield Strength(N/cm2)		Tensile Strength(N/cm2)		Elongation (%)
	≥335		≥490		≥16

Grade	Technical data of the original chemical composition (%)
	C	Mn	Si	S	P	V
HRB400	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045	0.04-0.12
	Physics capability
	Yield Strength(N/cm2)		Tensile Strength(N/cm2)		Elongation (%)
	≥400		≥570		≥14

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will arrange production. The normal sizes with the normal grade can be produced within one month. The specific shipping date is dependent upon international and government factors, the delivery to international main port about 45-60days.

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Reinforcing Steel Bar for Concrete

Q: Can steel rebars be used in seismic-resistant construction?: Yes, steel rebars can be used in seismic-resistant construction. Steel rebars provide strength and flexibility to reinforced concrete structures, making them more capable of withstanding seismic forces. They help distribute the energy generated during an earthquake, reducing the chances of structural failure and ensuring the safety of the building and its occupants.

Q: Are there any disadvantages of using steel rebars?: Steel rebars have several drawbacks that should be taken into consideration: 1. Vulnerability to corrosion: Moisture and oxygen can cause steel rebars to rust over time, compromising their structural integrity. This issue is particularly concerning in coastal areas with high humidity levels or structures exposed to harsh weather conditions. 2. Heavy weight: Compared to alternatives like fiberglass or carbon fiber reinforced polymers, steel rebars are relatively heavy. This poses challenges during transportation and installation, especially in large-scale construction projects that require heavy machinery for moving and positioning the rebars. 3. Higher cost: Steel rebars are generally more expensive than other reinforcement materials, which can drive up the overall cost of a construction project. Moreover, the price of steel is subject to market fluctuations, making it difficult to accurately estimate the budget for reinforcement materials. 4. Conductivity issues: Steel rebars have high heat and electrical conductivity, which can be problematic in structures requiring insulation or in areas with stringent electrical conductivity requirements. In such cases, additional insulation or grounding measures may be necessary, adding complexity and cost to the construction process. 5. Environmental impact: The production of steel rebars is energy-intensive and contributes to greenhouse gas emissions. The extraction and processing of iron ore for manufacturing steel rebars can have significant environmental effects such as deforestation, habitat destruction, and air and water pollution. Despite these disadvantages, steel rebars continue to be widely used in construction due to their high tensile strength, durability, and proven track record in providing structural support. Efforts are ongoing to address these drawbacks through advancements in corrosion-resistant coatings and the exploration of alternative reinforcement materials.

Q: What are the guidelines for the proper spacing of steel rebars in slabs-on-grade?: To ensure the structural integrity and longevity of the concrete slab, it is crucial to follow guidelines for spacing steel rebars in slabs-on-grade. Here are the general guidelines to be followed: 1. Concrete cover: The first consideration is the distance between the rebar surface and the concrete edge, known as the concrete cover. Local building codes or engineering standards typically specify the minimum cover requirements, which must be strictly adhered to. This cover protects the rebar from corrosion and provides fire resistance. 2. Rebar spacing: The spacing between rebars depends on the load requirements and slab dimensions. A closer spacing results in a stronger slab. However, it is necessary to maintain proper spacing to allow free flow of concrete around the rebar during pouring and ensure proper consolidation. Generally, the spacing should not exceed three times the slab thickness or 18 inches, whichever is smaller. 3. Rebar size and diameter: The selection of rebar size and diameter depends on the load requirements and design specifications. Larger loads require larger diameter rebars with increased spacing. Common rebar sizes for slabs-on-grade range from #3 (3/8 inch diameter) to #8 (1 inch diameter). 4. Rebar placement: Proper placement of rebars within the slab is critical. The rebars should be positioned at the center of the slab's thickness to ensure even load distribution. Moreover, they should be securely tied or supported to prevent displacement during concrete placement and consolidation. 5. Joint reinforcement: Construction joints are often included in slabs-on-grade to accommodate expansion and contraction. Proper reinforcement of these joints is essential for maintaining structural integrity. Joint reinforcement, such as dowel bars or tie bars, should be placed perpendicular to the joint and adequately anchored on both sides. It is important to note that these guidelines provide a general overview, and specific project requirements may vary. Consulting a structural engineer or following local building codes and industry standards is essential to ensure compliance and optimize the design of steel rebars in slabs-on-grade.

Q: How do steel rebars improve the ductility of a structure?: Steel rebars improve the ductility of a structure by providing reinforcement and enhancing its ability to withstand tensile forces. The presence of rebars within concrete or other structural materials allows them to better absorb and distribute stress, preventing brittle failure and promoting flexural strength.

Q: How do steel rebars perform in extreme temperature conditions?: Steel rebars excel in extreme temperature conditions due to their high thermal conductivity and low coefficient of thermal expansion, enabling efficient heat transfer and resistance against deformation caused by temperature fluctuations. Under exceedingly high temperatures, steel rebars maintain their strength and structural integrity, possessing a high melting point that allows them to retain their properties even in intense fire scenarios. As a result, they are ideal for reinforcing buildings, bridges, and tunnels where fire resistance is crucial. Similarly, in extremely low temperatures, steel rebars exhibit admirable performance. Unlike certain materials, steel does not become brittle or weaken in cold conditions. Consequently, it is well-suited for use in cold climates and regions experiencing frequent freeze-thaw cycles. Moreover, steel rebars boast exceptional durability, enduring extreme temperature fluctuations without significant degradation. Their minimal expansion and contraction help uphold the stability and longevity of reinforced structures. However, it is important to acknowledge that extreme temperatures can still impact steel rebars to some extent. In very high temperatures, steel may undergo slight thermal expansion, causing minor stresses in the surrounding concrete. Similarly, in very low temperatures, slight contraction may occur, but these effects remain minimal and well within acceptable limits. Overall, steel rebars present a dependable choice for reinforcing structures in extreme temperature conditions, offering outstanding strength, durability, and fire resistance.

Q: Can steel rebars be galvanized for additional protection?: Yes, steel rebars can be galvanized for additional protection. Galvanizing involves applying a protective zinc coating to the surface of the steel rebar, which helps to prevent corrosion and increases its lifespan.

Q: What are the different shapes of steel rebars?: Steel rebars, also known as reinforcing bars, come in various shapes, including round, square, and deformed. The round rebar is the most common type, while square rebars provide better grip due to their flat sides. Deformed rebars have ridges or indentations, enhancing their bond with concrete and improving structural integrity.

Q: What are the safety precautions when working with steel rebars?: To minimize the chance of accidents and injuries when working with steel rebars, it is crucial to adhere to various safety measures. Consider the following key precautions: 1. Personal Protective Equipment (PPE): Ensure that you always wear the appropriate PPE, which includes safety glasses or goggles, gloves, steel-toed boots, and a hard hat. This will shield you from potential dangers like falling objects, flying debris, or accidental contact with sharp edges. 2. Training and awareness: Make certain that all workers involved in handling steel rebars receive proper training on safe work practices and are knowledgeable about the potential hazards associated with this work. Regular safety meetings and reminders can help reinforce this knowledge. 3. Proper lifting techniques: Given that steel rebars can be heavy and difficult to handle, employ proper lifting techniques such as bending at the knees and using leg muscles to avoid strains or back injuries. If necessary, utilize mechanical lifting aids like cranes or hoists to lessen the physical strain on workers. 4. Secure storage and handling: Store steel rebars securely and in an organized manner to prevent them from falling or rolling onto workers. When moving or transporting rebars, ensure they are properly secured to prevent shifting or falling during transit. 5. Cutting and bending precautions: When cutting or bending steel rebars, use appropriate tools and equipment like bolt cutters or rebar benders. Always wear protective gloves and ensure that the cutting or bending area is clear of other workers to prevent accidental injuries. 6. Fall protection: When working at elevated heights, such as during the installation of rebars in elevated structures, ensure that proper fall protection measures are in place. This may involve using safety harnesses, guardrails, or safety nets to prevent falls. 7. Fire prevention: Steel rebars can produce sparks when cut or welded, so it is essential to have adequate fire prevention measures in place. Clear the work area of flammable materials, have readily available fire extinguishers, and adhere to appropriate welding safety protocols. 8. Regular equipment maintenance: Keep all tools and equipment used for handling steel rebars well-maintained and in good working condition. Regularly inspect them for any damage or defects that could compromise safety. By adhering to these safety precautions, you can establish a safer working environment when dealing with steel rebars and reduce the risk of accidents or injuries.

Q: How do steel rebars resist seismic forces?: Steel rebars resist seismic forces by providing reinforcement to concrete structures. During an earthquake, the rebars act as a backbone, absorbing and distributing the seismic forces throughout the structure. The high tensile strength of steel allows it to withstand the intense stress and deformation caused by seismic activity, ensuring the durability and stability of the building. By preventing excessive cracking and failure, steel rebars enhance the overall seismic performance of the structure, thus increasing its resistance to seismic forces.

Q: What is the role of steel rebars in the construction of railway bridges?: The role of steel rebars in the construction of railway bridges is to provide reinforcement and strength to the concrete structure. Rebars are embedded within the concrete to enhance its tensile strength, allowing the bridge to withstand heavy loads, vibrations, and environmental factors such as temperature changes. This reinforcement ensures the structural integrity and longevity of the railway bridge, making it safe and durable for train traffic.

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