Metallic Material Steel Rebar/ Deformed Steel Bar/Iron Rods for Construction Concrete
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 m.t./month
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Specification
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Technique:
Hot Rolled
Shape:
Round
Surface Treatment:
Galvanized
Steel Grade:
Q235
Certification:
ISO,SGS,CE
Thickness:
6MM-50MM
Length:
12M
Net Weight:
100TONS
Metallic Material Steel Rebar/ Deformed Steel Bar/Iron Rods for Construction Concrete
Products Description:
Rebar is common known as steel reinforcing bar, usually applied to reinforced concrete and reinforced masonry structures. Formed from mild steel, it is given ribs for better frictional adhesion to the concrete. In other words rebar is an iron rod, a weldable plain reinforcing steel bar, that it can be also used for steel meshes.
1. Diameter: 5.5mm-10mm rounds reinforcing steel bar
10m- 40 rods reinforcing deformed steel bar
2. Length: 6m, 9m, 12m or customized
3. Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN. OEM technology - send detailed technical parameters for accurate quotation.
4. Produce Process: smelt iron - EAF smelt billet - ESR smelt billet - hot rolled or forged to get the steel round bar and plate
5. Heat Treatment: annealing, normalizing, tempering, quenching
6. Surface Treatment: Black
7. Quality Assurance: We accept third party inspection for all orders.
You can ask testing organizations such as SGS, BV, etc. to test our products before shipping.
Theoretical weight and section area:
| Diameter(mm) | Section area (mm²) | Mass(kg/m) | Weight of 12m bar(kg) |
6 | 28.27 | 0.222 | 2.664 |
| 8 | 50.27 | 0.395 | 4.74 |
| 12 | 113.1 | 0.888 | 10.656 |
| 16 | 201.1 | 1.58 | 18.96 |
| 20 | 314.2 | 2.47 | 29.64 |
| 25 | 490.9 | 3.85 | 46.2 |
| 32 | 804.2 | 6.31 | 75.72 |
| 40 | 1257 | 9.87 | 118.44 |
| 50 | 1964 | 15.42 | 185.04 |
Technical Datas:
Grade | Technical data of the original chemical composition (%) | |||||
| C | Mn | Si | S | P | V | |
| ≤0.25 | ≤1.60 | ≤0.80 | ≤0.045 | ≤0.045 | 0.04-0.12 | |
HRB400 | Physical capability | |||||
| Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) | ||||
| ≥400 | ≥570 | ≥14 | ||||
Products Show:
Packages and Shipping:
| Packaging | A seaworthy pachaging or as per customer required |
| Shipping | 10- 30days after we receive 30% deposite |
FAQ:
1. Your advantages?
Professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale
2. Test & Certificate?
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem
3. Payment Terms?
30% TT as deposit and 70% before delivery. Or Irrevocable L/C at sight.
4. Trading Terms?
EXW, FOB, CIF, FFR, CNF
5. After-sale Service
We provide the services and support you need for every step of our cooperation. We're the business partner you can trust. For any problem, please kindly contact us at any your convenient time.
- Q: 12 how much is one ton of thread steel?
- 12 thread steel one meter weight: 0.888kg
- Q: What are the different methods of joining steel rebars?
- Some different methods of joining steel rebars include overlap splicing, mechanical couplers, welded splices, and threaded splices. These methods ensure a strong and reliable connection between the rebars, which is essential for reinforcing concrete structures.
- Q: What are the factors that can affect the lifespan of steel rebars in concrete structures?
- There are several factors that can affect the lifespan of steel rebars in concrete structures. These factors include the quality of the steel used, the level of corrosion protection provided, the exposure to harsh environmental conditions, the presence of cracks or voids in the concrete, and the maintenance and repair practices followed.
- Q: What is the maximum spacing allowed between vertical steel rebars in columns?
- The maximum spacing allowed between vertical steel rebars in columns depends on various factors such as the column size, design requirements, and local building codes. However, a common guideline is to keep the spacing between rebars equal to or less than three times the column diameter or width.
- Q: What is the process of reinforcing existing concrete structures with steel rebars?
- Enhancing the strength and durability of existing concrete structures with steel rebars involves a series of steps. To begin, a thorough assessment of the concrete structure is conducted to determine its condition and identify areas in need of reinforcement. This involves inspecting the concrete for cracks, signs of degradation, or any other structural issues. Once the areas requiring reinforcement are identified, the next step is surface preparation. This involves cleaning the concrete surface to remove any loose debris, dirt, or contaminants that could hinder the bonding of the rebars with the concrete. Various methods, such as pressure washing or sandblasting, can be used for this purpose. Following surface preparation, the rebars are strategically placed within the concrete structure. The positioning and spacing of the rebars are crucial to ensure optimal reinforcement and structural integrity. This is typically accomplished by drilling holes or creating channels in the concrete where the rebars will be placed. Afterward, the rebars are inserted into the holes or channels, ensuring proper alignment and securing. The rebars are typically cut to the required length and bent into the desired shape to meet the specific reinforcement needs of the structure. Once the rebars are in place, they are anchored or secured to the existing concrete by various means. This can be achieved through the use of epoxy adhesive, mechanical anchors, or embedding the rebars into fresh concrete poured around them. Finally, the concrete is restored to its original condition, covering the rebars and creating a smooth and even surface. This may involve patching up any holes or channels created during the reinforcement process and finishing the surface to match the surrounding concrete. In conclusion, the process of reinforcing existing concrete structures with steel rebars necessitates careful planning, proper surface preparation, precise placement of rebars, secure anchoring, and appropriate finishing to achieve a strengthened and long-lasting structure.
- Q: What is the process of reinforcing concrete walls with steel rebars?
- To ensure the strength and integrity of a concrete wall, it is necessary to reinforce it with steel rebars. This process consists of several steps. Engineers first determine the design and layout of the rebars based on the specific requirements of the wall. This involves considering the diameter, spacing, and placement of the rebars. Once the design is finalized, construction of the concrete wall can begin. The rebars are typically placed in a grid-like pattern within the formwork or molds. They are positioned at predetermined intervals and secured in place using wire ties or other fastening methods. During the pouring of the concrete, the rebars are completely enclosed within the mixture. This ensures that the concrete and steel work together to resist tension forces and provide additional strength to the wall. Once the concrete has been poured and cured, the rebars become an integral part of the structure. They act as reinforcement by absorbing and distributing tensile forces that may arise from external loads or environmental factors. In addition to the initial reinforcement, construction workers may also install vertical rebars along the height of the wall, commonly referred to as wall ties. These rebars provide further stability and prevent the wall from cracking or collapsing under pressure. Overall, the process of reinforcing concrete walls with steel rebars requires careful planning, precise placement, and proper integration between the rebars and the concrete. This technique significantly enhances the strength and durability of the walls, enabling them to withstand heavier loads and ensuring the safety of the structure.
- Q: What is the recommended spacing between steel rebars in concrete slabs?
- The recommended spacing between steel rebars in concrete slabs typically ranges from 12 to 18 inches, depending on the specific engineering and structural requirements of the project.
- Q: How are steel rebars protected against corrosion in aggressive environments?
- Various methods are utilized to protect steel rebars from corrosion in aggressive environments. One commonly employed approach involves the application of protective coatings. These coatings are administered to the surface of the rebars, establishing a barrier between the steel and the corrosive elements present in the surroundings. Examples of protective coatings comprise epoxy, zinc, and polyethylene coatings. Furthermore, cathodic protection is another means of safeguarding steel rebars. This technique involves linking the rebar to a sacrificial anode, often composed of a more reactive metal like zinc or magnesium. By doing so, the anode corrodes instead of the rebar, effectively sacrificing itself to shield the steel against corrosion. Additionally, corrosion inhibitors can be utilized to protect steel rebars. These inhibitors can be incorporated into the concrete mixture or directly applied to the rebars. Their function is to diminish the corrosive potential of the environment or form a protective film on the surface of the rebar, curtailing corrosion. Moreover, proper design and construction practices can play a pivotal role in preserving the integrity of steel rebars against corrosion. Sufficient concrete cover can aid in establishing a physical barrier between the rebar and the aggressive environment, thereby minimizing the steel's exposure to corrosive elements. Additionally, effective drainage systems and the use of non-corrosive aggregates contribute to the reduction of rebars' exposure to moisture and other corrosive substances. In summary, a combination of protective coatings, cathodic protection, corrosion inhibitors, and appropriate design and construction practices are employed to guarantee the protection of steel rebars in aggressive environments. These measures effectively prolong the lifespan of structures and uphold their structural integrity.
- Q: What is the thermal expansion coefficient of steel rebars?
- In construction projects, it is crucial to take into account the thermal expansion coefficient of steel rebars to avoid potential problems caused by temperature changes. The coefficient refers to the speed at which the rebars expand or contract. Steel is recognized for its relatively low thermal expansion coefficient, which typically measures around 12 x 10^-6 per degree Celsius. This indicates that with each degree rise in temperature, the length of the steel rebar will expand by roughly 0.000012 times its original length. By considering this factor, we can prevent issues like structural instability and cracking resulting from temperature fluctuations.
- Q: What is the process of inspecting steel rebars for quality control?
- The process of inspecting steel rebars for quality control involves several steps to ensure that the rebars meet the required standards and specifications. Here is a general overview of the process: 1. Visual Inspection: The first step is to visually inspect the rebars for any visible defects such as cracks, surface imperfections, or irregularities in shape or size. This can be done manually or using automated systems that detect defects through image processing techniques. 2. Measurement and Dimensional Inspection: The rebars are then measured for their dimensions, including length, diameter, and shape. This is typically done using calibrated measuring instruments such as calipers, gauges, or laser-based devices. The measurements are compared against the specified tolerances to ensure compliance. 3. Chemical Analysis: A sample of rebars is taken and subjected to chemical analysis to determine the composition of the steel. This includes measuring the levels of carbon, manganese, sulfur, phosphorus, and other elements. The results are compared against the required chemical composition specified in the standards. 4. Mechanical Testing: Mechanical properties such as tensile strength, yield strength, elongation, and bendability are crucial for rebars used in construction. Samples are taken 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: Rebars are often exposed to harsh environmental conditions, so it is important to assess their resistance to corrosion. This can be done through tests like salt spray testing or electrochemical methods to measure the rebars' corrosion resistance and ensure they will maintain their strength over time. 6. Weldability Testing: If rebars are intended for welding applications, their weldability is assessed. This includes evaluating the rebars' ability to form a strong and sound weld joint without any defects. Weldability tests may involve visual inspection, bend tests, or even destructive testing of welded samples. 7. Documentation and Certification: Throughout the inspection process, detailed records of all measurements, test results, and observations are documented. If the rebars pass all quality control tests, a certification or quality control report is issued, indicating that the rebars meet the required standards and specifications. It is worth noting that the specific inspection procedures may vary depending on the applicable standards, project requirements, and the type of rebar being inspected. Additionally, these inspections can be conducted by internal quality control teams or independent third-party inspection agencies to ensure impartiality and accuracy of the results.
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Metallic Material Steel Rebar/ Deformed Steel Bar/Iron Rods for Construction Concrete
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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