Steel Ribbed Bar For Construction Hot Rolled
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Specifications
Standard | GB | HRB400 | |
Diameter | 6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm | ||
Length | 6M, 9M,12M or as required | ||
Place of origin | Hebei, China mainland | ||
Advantages | exact size, regular package, chemical and mechanical properties are stable. | ||
Type | Hot rolled deformed steel bar | ||
Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)
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 | |
Physical capability | |||||||
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) | |||||
≥400 | ≥570 | ≥14 | |||||
Usage and Applications
Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger..
Packaging & Delivery
Packaging Detail: products are packed in bundle and then shipped by container or bulk vessel, deformed bar is usually naked strapping delivery, when storing, please pay attention to moisture proof. The performance of rust will produce adverse effect.
Each bundle weight: 2-3MT, or as required
Payment term: TT or L/C
Delivery Detail: within 45 days after received advanced payment or LC.
Label: to be specified by customer, generally, each bundle has 1-2 labels
Trade terms: FOB, CFR, CIF
Note
1. Our products are produced according to national standard (GB), if not, supply according to national standards (GB) or agreement as customer required.
2. Other Grade and Standard Deformed Steel Bar we can supply:
Grade: GR40/GR60, G460B/B500A/B500B/B500C,BST500S
Standard: ASTM, BS, DIN
The Minimum Order Quantity of these products is high, and need to be confirmed.
3. We can not only supply Deformed Steel Bar; if you need anything about building materials, please contact us for further information.
4. Please send us your detail specifications when inquire. We will reply to you as soon as possible. We sincerely hope we can establish a long stable business relationship.
- Q: How are steel rebars cut and shaped on-site?
- Steel rebars are typically cut and shaped on-site using handheld tools such as rebar cutters and benders. Rebar cutters are used to accurately cut the rebars to the required length, while rebar benders are used to shape the rebars into various configurations such as bends, hooks, or stirrups. These tools allow construction workers to customize the rebars according to the specific needs of the project, ensuring a precise and efficient installation.
- Q: What is the maximum tensile force of 25 thread steel?
- The specific parameters of common thread steel are:HRB335: yield strength: 335Mpa, tensile strength 445Mpa, elongation: 17%HRB400: yield strength: 400Mpa, tensile strength 540Mpa, elongation: 16%HRB500: yield strength: 500Mpa, tensile strength 630Mpa, elongation: 15%Ji'nan permanent thread steel tensile strength testing machine, Ji'nan permanent thread steel tensile test machine,
- Q: What are the common problems associated with steel rebars in construction?
- Some common problems associated with steel rebars in construction include corrosion, improper placement or spacing, inadequate cover, poor welding or splicing, and lack of proper anchorage.
- Q: What are the guidelines for reinforcing concrete slabs with steel rebars?
- The guidelines for reinforcing concrete slabs with steel rebars involve several key considerations. Firstly, the rebars should be placed in the lower portion of the slab, typically in a grid pattern, to provide tensile strength and prevent cracking. The spacing and size of the rebars should be determined based on the load and requirements of the specific slab. Additionally, proper lap length and overlap of rebars should be ensured at intersections to maintain structural integrity. Lastly, it is important to follow local building codes and standards to ensure compliance and safety.
- 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: The effect of adding alum on thread steel
- Vanadium can remarkably improve the weldability of ordinary low carbon low alloy steel. Vanadium is an excellent deoxidizer for steel. 0.5% of the vanadium in the steel can refine the grain and improve the strength and toughness. The carbides formed by vanadium and carbon can improve hydrogen corrosion resistance under high temperature and high pressure.
- Q: How do steel rebars affect the overall energy efficiency of a structure?
- Steel rebars can significantly impact the overall energy efficiency of a structure. By reinforcing concrete elements, rebars enhance the structural integrity and durability of the building, reducing the need for repairs and maintenance over time. This increased longevity can lead to energy savings by minimizing the energy consumption associated with frequent repairs and replacements. Additionally, rebars can contribute to the overall energy efficiency of a structure by enhancing its thermal mass. This added mass helps regulate indoor temperatures, reducing the reliance on heating and cooling systems and ultimately decreasing energy consumption.
- Q: What are the factors that affect the strength of steel rebars?
- Several factors can affect the strength of steel rebars: 1. Composition: The composition of the steel bar plays a crucial role in determining its strength. Steel rebars typically have a carbon content ranging from 0.15% to 0.6%, which affects their hardness and strength. Other elements such as manganese, silicon, and sulfur can also impact the strength of the rebar. 2. Manufacturing process: The process used to manufacture steel rebars can influence their strength. The bars are generally made through hot rolling, which involves heating the steel billets to high temperatures and then passing them through rollers to shape them. The cooling rate during the manufacturing process can affect the internal microstructure of the bar, leading to variations in strength. 3. Size and shape: The size and shape of the rebar can affect its strength. Thicker and larger diameter rebars generally have higher strength capacities compared to thinner ones. Similarly, the shape of the rebar, whether it is a plain round bar or has deformations like ribs, can also impact its strength. 4. Heat treatment: Certain heat treatment processes can be applied to steel rebars to enhance their strength. For example, quenching and tempering involve heating the rebar to a high temperature and then rapidly cooling it to increase its strength and hardness. The specific heat treatment process used will depend on the desired strength requirements. 5. Corrosion: Corrosion can significantly reduce the strength of steel rebars over time. When exposed to moisture and oxygen, steel rebars can rust, leading to structural degradation. Proper corrosion protection measures, such as epoxy coating or galvanization, can help maintain the strength and durability of the rebars. 6. Loading conditions: The strength of steel rebars can be influenced by the type and magnitude of the applied loads. Different applications require rebars with varying strength capacities. The design and engineering of structures should consider the expected loads to determine the appropriate strength of the rebars used. Overall, the strength of steel rebars is influenced by their composition, manufacturing process, size and shape, heat treatment, corrosion protection, and the loading conditions they will be subjected to. It is essential to consider these factors when selecting and using steel rebars in construction projects.
- Q: How do steel rebars prevent cracks in concrete structures?
- Steel rebars prevent cracks in concrete structures by providing reinforcement and increasing the tensile strength of the concrete. When concrete is subjected to external forces or loads, such as pressure or temperature changes, it tends to crack due to its weak tensile strength. However, by embedding steel rebars within the concrete, these bars withstand the tensile forces and distribute them throughout the structure. This reinforcement helps to prevent or minimize cracks by adding strength and stability to the concrete, making it more durable and resistant to cracking.
- Q: What are the different types of coating for steel rebars?
- Steel rebars can be protected against corrosion and made more durable by applying various types of coatings. These coatings include: 1. Epoxy Coating: Epoxy coating is commonly used for steel rebars as it offers excellent corrosion protection. To ensure a thick and long-lasting coating, epoxy coatings are typically applied in multiple layers. 2. Galvanized Coating: Galvanized coating involves covering the steel rebar with a layer of zinc, which acts as a strong barrier against corrosion and extends the rebar's lifespan. This coating can be applied through hot-dip galvanizing or electroplating processes. 3. Fusion-Bonded Epoxy Coating (FBE): Fusion-bonded epoxy coating is another popular choice. It entails applying epoxy powder to the rebar and then fusing it to the surface through heat. FBE coatings provide exceptional resistance to chemicals and corrosion. 4. Stainless Steel Coating: Steel rebars can be coated with stainless steel to enhance their resistance to corrosion. This is achieved through thermal spray, in which stainless steel particles are sprayed onto the rebar surface. 5. Polyethylene Encasement: Polyethylene encasement involves wrapping the steel rebar with a layer of polyethylene material. This coating acts as a physical barrier, protecting against moisture and chemicals that cause corrosion. Each type of coating offers unique advantages and is suitable for different applications. The choice of coating for steel rebars depends on factors such as the environmental conditions, desired lifespan, and specific project requirements.
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Steel Ribbed Bar For Construction Hot Rolled
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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