HRB335 small hot rolled deformed steel bar

HRB335 small hot rolled deformed steel bar System 1

HRB335 small hot rolled deformed steel bar System 2

HRB335 small hot rolled deformed steel bar

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Specifications

Certificates: CE & ISO9001:2000
Material: hrhrb400 ,hrb500, BS4449, ASTM A615, SD400
length:6-12
Size: 6mm-40mm

Product Advantages:

OKorder's Hot Rolled Carbon Steel Deformed Bar 16-25mm with High Quality are durable, strong.packed and suitable for construction

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 HRB400 BS4449 Grade460 ASTM Grade40 Grade60

Certificates: ISO, SGS, BV, CIQ

Length:6m 8m 9m 12m

Packaging: Export packing, packed by coil

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 begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q4: How many tons per bundle?

A4: Around 2-3tons

Q5: How to avoid the rust after deliver the goods to the loading port?

HRB335 small hot rolled deformed steel bar

Q: Can steel rebars be used in foundations and footings?: Certainly, steel rebars are suitable for use in foundations and footings. In fact, these applications commonly employ steel rebars owing to their exceptional tensile strength and durability. Typically composed of carbon steel, steel rebars reinforce concrete structures effectively, bolstering their resistance against tension and bending forces. By integrating rebars into the concrete, additional strength is provided, mitigating the risk of cracking or failure when subjected to heavy loads. Consequently, utilizing steel rebars in foundations and footings is an established construction practice, guaranteeing the stability and longevity of the structure.

Q: Can steel rebars be used in the construction of nuclear power plants?: Yes, steel rebars can be used in the construction of nuclear power plants. Steel rebars are commonly used as reinforcement in concrete structures, and they provide strength and durability to the overall construction. However, specific regulations and standards must be followed to ensure the quality and safety of the rebars used in nuclear power plant construction, considering the critical nature of these facilities.

Q: How do steel rebars contribute to the overall aesthetics of a building?: Steel rebars do not directly contribute to the overall aesthetics of a building as they are typically hidden within the concrete structure. However, their presence is crucial for providing structural integrity and strength, ensuring the building's safety and durability.

Q: How do steel rebars prevent cracking in concrete?: Steel rebars prevent cracking in concrete by providing additional tensile strength to the composite material. As concrete is strong in compression but weak in tension, the steel rebars act as reinforcement and resist the tensile forces that can cause cracking. By distributing the applied loads more evenly throughout the structure, rebars help to enhance the structural integrity and durability of the concrete, preventing the formation and propagation of cracks.

Q: How long do steel rebars typically last?: The lifespan of steel rebars tends to be lengthy, enduring for numerous decades. Several factors come into play when determining the exact duration of their longevity, including the quality of the rebar, the environmental conditions it encounters, and the maintenance practices employed. Generally, steel rebars are designed to possess resistance against corrosion, a key factor influencing their durability. Nevertheless, as time passes, rebars may undergo some corrosion as a result of exposure to moisture, chemicals, or other corrosive substances. This corrosion has the potential to diminish their lifespan. The lifespan of steel rebars can be extended through regular inspections, maintenance, and the application of protective coatings. By providing adequate care, steel rebars can typically remain functional for 30 to 50 years, or possibly even longer.

Q: What are the different grades of steel rebars used in bridge construction?: The construction of bridges requires the use of different grades of steel rebars, which are selected based on the specific demands and load-bearing capacities of the structure. The following are the most frequently employed grades of steel rebars in bridge construction: 1. Grade 40: This is the lowest grade of steel rebar utilized in bridge construction. It possesses a minimum yield strength of 40,000 pounds per square inch (psi). Grade 40 steel rebars are typically employed for lighter loads and smaller bridge structures. 2. Grade 60: This is the grade of steel rebar most commonly used in bridge construction. It boasts a minimum yield strength of 60,000 psi. Grade 60 steel rebars are suitable for medium to heavy loads and are frequently employed in bridge piers, girders, and deck slabs. 3. Grade 75: This grade of steel rebar possesses a minimum yield strength of 75,000 psi. Grade 75 steel rebars are employed for heavy loads and large bridge structures that necessitate greater strength. They are commonly utilized in the construction of high-rise bridges and long-span structures. 4. Grade 80 and Grade 100: These are high-strength steel rebars with minimum yield strengths of 80,000 psi and 100,000 psi, respectively. These grades of steel rebars are used in specialized bridge construction projects that require exceptional strength and durability. They are commonly employed in the construction of cable-stayed bridges and suspension bridges. It is worth noting that the selection of the appropriate grade of steel rebar for bridge construction relies on various factors, including anticipated loads, span length, design specifications, and local building codes. Consulting with structural engineers and adhering to recommended guidelines ensures the utilization of the appropriate grade of steel rebar, thereby guaranteeing the safety and longevity of the bridge structure.

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 is the process of inspecting steel rebars for quality control?: To ensure that steel rebars meet the required standards and specifications, the quality control inspection process encompasses various steps. Below is a general outline of the process: 1. Visual Inspection: Initially, the rebars undergo visual inspection to identify any visible defects such as cracks, surface imperfections, or irregular shapes and sizes. This can be done manually or by utilizing automated systems that employ image processing techniques to detect defects. 2. Measurement and Dimensional Inspection: The dimensions of the rebars, including length, diameter, and shape, are measured using calibrated instruments such as calipers, gauges, or laser-based devices. These measurements are then compared to specified tolerances to ensure compliance. 3. Chemical Analysis: A sample of rebars is taken and subjected to chemical analysis to determine the steel's composition. This involves measuring the levels of carbon, manganese, sulfur, phosphorus, and other elements. The results are then compared to the required chemical composition specified in the standards. 4. Mechanical Testing: The mechanical properties of the rebars, such as tensile strength, yield strength, elongation, and bendability, are crucial for construction purposes. Samples are extracted from the batch and tested in a laboratory using standardized tests, such as tensile testing machines, to ensure they meet the specified requirements. 5. Corrosion Resistance Testing: Since rebars are often exposed to harsh environmental conditions, assessing their resistance to corrosion is essential. This can be achieved through tests like salt spray testing or electrochemical methods, which measure the rebars' corrosion resistance and ensure their long-term strength. 6. Weldability Testing: If the rebars are intended for welding applications, their ability to form a strong and defect-free weld joint is assessed. This includes evaluating their weldability through visual inspection, bend tests, or even destructive testing of welded samples. 7. Documentation and Certification: Throughout the inspection process, detailed records of measurements, test results, and observations are documented. If the rebars pass all quality control tests, a certification or quality control report is issued, confirming that they meet the required standards and specifications. It is important to note that the specific inspection procedures may vary depending on the applicable standards, project requirements, and the type of rebar being inspected. Furthermore, these inspections can be conducted by internal quality control teams or independent third-party inspection agencies to ensure impartiality and accuracy of the results.

Q: Can steel rebars be used in bridges and highways?: Yes, steel rebars can be used in bridges and highways. Steel rebars are commonly used as reinforcement in concrete structures, including bridges and highways, to enhance their strength and durability. The rebars are embedded within the concrete to provide additional tensile strength, which is crucial for withstanding the various loads and stresses that bridges and highways are subjected to. Steel rebars are preferred due to their high strength-to-weight ratio, corrosion resistance, and ability to bond well with concrete. Additionally, they can be easily fabricated and shaped to suit the design requirements of the bridge or highway. Overall, steel rebars are a vital component in the construction of bridges and highways, ensuring their structural integrity and longevity.

Q: How do steel rebars affect the overall sustainability of bridge constructions?: The overall sustainability of bridge constructions is greatly improved by the inclusion of steel rebars. Firstly, steel rebars play a crucial role in enhancing the longevity and durability of bridges. They reinforce concrete structures, ensuring that tensile and compressive forces are evenly distributed and minimizing the risk of cracks and structural failure. This results in a longer functional lifespan for the bridge, reducing the need for frequent repairs or replacements and ultimately decreasing material consumption and waste generation. Furthermore, the sustainability of bridge constructions is further enhanced by the high recyclability of steel rebars. Once a bridge reaches the end of its life cycle, the steel rebars can be easily removed and recycled. This reduces the demand for new steel production, conserving natural resources and reducing carbon emissions associated with manufacturing processes. Additionally, the recycling of steel rebars helps mitigate the environmental impacts of mining and extraction activities. In addition, the use of steel rebars enables the design of lighter and more efficient bridge structures. Steel is known for its high strength-to-weight ratio, allowing for the creation of slender and visually appealing bridge designs. By reducing the weight of the bridge, less material is required for construction, resulting in lower energy consumption and carbon emissions during manufacturing, transportation, and construction phases. Furthermore, lighter bridge structures place less strain on the supporting foundation, reducing the need for costly reinforcement measures. In conclusion, the inclusion of steel rebars positively impacts the overall sustainability of bridge constructions in various ways. They enhance durability, reduce the need for repairs or replacements, and minimize waste generation. The recyclability of steel rebars helps conserve natural resources, reduce carbon emissions, and mitigate environmental impacts. Additionally, the use of steel rebars allows for the design of lighter and more efficient bridge structures, resulting in lower energy consumption and associated carbon emissions.

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