Hot Rolled GB Standard Deformed Steel Rebars for Construction

Hot Rolled GB Standard Deformed Steel Rebars for Construction System 1

Hot Rolled GB Standard Deformed Steel Rebars for Construction

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 200000 m.t./month

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Product Description:

OKorder is offering Hot Rolled GB Standard Deformed Steel Rebars for Construction 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 European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

Hot Rolled GB Standard Deformed Steel Rebars for Construction are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

1. Supporting members, most commonly in the house raising industry to strengthen timber bears under houses. Transmission line towers, etc

2. Prefabricated structure

3. Medium scale bridges

4. It is widely used in various building structures and engineering structures such as roof beams, bridges, transmission towers, hoisting machinery and transport machinery, ships, industrial furnaces, reaction tower, container frame and warehouse etc.

Product Advantages:

Hot Rolled GB Standard Deformed Steel Rebars for Construction are durable, strong, and resist corrosion.

Main Product Features:

· Premium quality

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

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

High Quality Hot Rolled Equal Angle Steel Bars for Strcuture are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

1. Supporting members, most commonly in the house raising industry to strengthen timber bears under houses. Transmission line towers, etc

2. Prefabricated structure

3. Medium scale bridges

Product Advantages:

High Quality Hot Rolled Equal Angle Steel Bars for Constrcution are durable, strong, and resist corrosion.

Main Product Features:

· Premium quality

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

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Specifications of Hot Rolled GB Standard Deformed Steel Rebars for Construction:

Standard	GB UK USA	HRB335 HRB400 HRB500 G460B, B500A, B500B,B500C GR40, GR60
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length	6M, 9M,12M or as required
Packing	Export standard packing: wrapped by wire rod in bundles
Each bundle weight	2-3MT, or as required
Trade terms	FOB, CFR, CIF
Payment terms	TT payment in advance or Irrevocable LC at sight.
Delivery Detail	within 45 days after received advanced payment or LC.
Brand name	DRAGON

Theoretical weight and section area of each diameter as below for your information:

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m (kg)	Pcs/ton
6	28.27	0.222	2.664	375.38
8	50.27	0.395	4.74	210.97
10	78.54	0.617	7.404	135.06
12	113.1	0.888	10.656	93.84
14	153.9	1.21	14.52	68.87
16	201.1	1.58	18.96	52.74
18	254.5	2.00	24	41.67
20	314.2	2.47	29.64	33.74
22	380.1	2.98	35.76	27.96
25	490.9	3.85	46.2	21.65
28	615.8	4.83	57.96	17.25
32	804.2	6.31	75.72	13.21
36	1018	7.99	98.88	10.43
40	1257	9.87	118.44	8.44
50	1964	15.42	185.04	5.40

Chemical Composition: (Please kindly find our chemistry of our material based on JIS as below for your information)

JISG3112 SD390	Chemical Composition
	C	Mn	Si	S	P
	0.22	1.38	0.4	0.014	0.022
	Physical capability
	Yield Strength(N/cm²)		Tensile Strength(N/cm²)		Elongation (%)
	620		≥400		21

The production process of Steel Rebar

1-Waling beam furnace 2-Roughing rolling group 3-Intermediate rolling train

4-Finishing rolling group 5-Water-cooling device 6-Walking beam cooler

7-Finishing equipment(including the cold scale shear,short feet collection system,

automatic counting device,bundling machine, collect bench)

Usage and Applications of Hot Rolled GB Standard Deformed Steel Rebars for Construction:

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 of Hot Rolled GB Standard Deformed Steel Rebars for Construction:

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.

Price: Keep lower operating costs so as to offer competitive price for our clients

Deformed Steel Rebars according to Korean standard

Deformed Steel Rebars

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: Can steel rebars be used in earthquake-prone regions?: Yes, steel rebars can be used in earthquake-prone regions. Steel rebars are commonly used in the construction of reinforced concrete structures to enhance their strength and provide resistance against seismic forces. The flexibility and ductility of steel make it an ideal material for earthquake-resistant construction. Properly designed and installed steel rebars can improve the structural integrity and overall performance of buildings in earthquake-prone areas.

Q: What are the maintenance requirements for steel rebars in a structure?: To ensure the stability and longevity of a building, it is crucial to consider the maintenance requirements for steel rebars in its structure. Steel rebars, also referred to as reinforcing bars, are utilized to strengthen concrete structures and withstand tension forces. Here are some important maintenance requirements to bear in mind: 1. Conducting Visual Inspections: Qualified personnel with knowledge and experience in recognizing structural issues should regularly perform visual inspections to identify any signs of corrosion, cracks, or damage in the rebars. 2. Keeping the Rebars Clean: It is necessary to keep the rebars free from debris, dirt, or chemicals that could accelerate corrosion. Employing proper cleaning methods, such as mild detergents and water, is essential to maintain their condition. 3. Protecting Against Corrosion: Steel rebars are prone to corrosion, particularly in environments with high humidity, exposure to saltwater, or chemical pollutants. Applying protective coatings like epoxy or zinc can help prevent or delay corrosion, thereby increasing the lifespan of the rebars. 4. Prompt Repair or Replacement: In the event of severe corrosion, cracks, or damage to any rebars, it is crucial to promptly repair or replace them. Neglecting these issues can compromise the structural integrity of the building and pose safety hazards. 5. Continuous Monitoring: It is advisable to continuously monitor the condition of the rebars to detect any changes or deterioration over time. Advanced techniques such as ultrasonic testing or electrical potential measurements can be utilized to assess the rebars' integrity. 6. Ensuring Proper Drainage: The structure should have proper drainage systems in place to prevent water accumulation and reduce the risk of corrosion in the rebars. Well-designed and well-maintained gutters, downspouts, and waterproofing measures can minimize water exposure. 7. Establishing a Regular Maintenance Schedule: It is crucial to establish a regular maintenance schedule to systematically conduct all necessary inspections, cleaning, and repairs. This aids in early identification of potential issues and enables prompt corrective actions. By adhering to these maintenance requirements, the steel rebars in a structure can be preserved, contributing to the overall safety, durability, and longevity of the building. Regular maintenance not only prevents costly repairs but also ensures the necessary structural integrity for the safety of occupants and the longevity of the structure.

Q: How do steel rebars affect the overall cost of maintenance and repairs?: Various structures can experience a noticeable impact on maintenance and repair costs due to the presence of steel rebars. The utilization of steel rebars is quite common in reinforcing concrete structures such as buildings, bridges, and highways. These rebars provide concrete with added strength and durability, effectively preventing cracks and structural failures. In terms of maintenance, steel rebars play a vital role in reducing the frequency and expenses associated with repairs. By reinforcing the concrete, rebars assist in distributing stress and load evenly, therefore minimizing the likelihood of structural damage. Consequently, property owners and infrastructure managers can save both time and money as maintenance and repair efforts become less frequent. Furthermore, the presence of steel rebars significantly contributes to the overall longevity of structures. By preventing cracks and other forms of damage, rebars effectively extend the lifespan of the concrete. Consequently, costly and extensive repairs, or even complete structure replacements, become less necessary over time. However, it is important to acknowledge that steel rebars themselves may require maintenance. Over time, rebars can corrode due to exposure to moisture, chemicals, or environmental factors. Consequently, the integrity of the structure can be compromised as the rebars weaken. Therefore, periodic inspection and maintenance of the rebars become necessary to prevent any potential issues. In conclusion, the impact of steel rebars on maintenance and repair costs is significant. While they enhance the strength and durability of structures, reducing the need for frequent repairs, they also require their own maintenance to prevent corrosion. By properly maintaining steel rebars, the lifespan of structures can be extended, resulting in long-term cost savings.

Q: What is the difference between hot-rolled and cold-worked steel rebars?: The main difference between hot-rolled and cold-worked steel rebars lies in the manufacturing process. Hot-rolled steel rebars are produced by heating the steel billets to high temperatures and then passing them through rolling mills to create the desired shape and size. This process results in a rougher surface and higher yield strength compared to cold-worked steel rebars. On the other hand, cold-worked steel rebars are made by subjecting the hot-rolled steel bars to additional processing steps, such as cold drawing or cold rolling. This process enhances the mechanical properties of the steel, including improved tensile strength, dimensional accuracy, and a smoother surface finish. In summary, hot-rolled steel rebars are formed through high-temperature rolling, while cold-worked steel rebars undergo additional steps to further refine their properties, resulting in a smoother surface and improved mechanical strength.

Q: What is the process of inspecting steel rebars on-site?: The process of inspecting steel rebars on-site involves several steps to ensure the quality and adherence to specifications. 1. Visual Inspection: The inspector starts by visually examining the rebars for any visible defects or damage, such as rust, cracks, bends, or improper dimensions. This helps identify any immediate issues that need attention. 2. Measurement: Accurate measurements are crucial to ensure the rebars meet the required dimensions. Using tools like calipers or measuring tapes, the inspector checks the length, diameter, and shape of each rebar, comparing them against the project specifications. 3. Chemical Analysis: Some projects may require chemical analysis of the steel rebars to confirm their composition and strength. Samples are taken from different batches of rebars and sent to a lab for testing. The results determine whether the rebars meet the required standards. 4. Non-Destructive Testing (NDT): NDT techniques are employed to evaluate the internal integrity of the rebars without damaging them. Methods like ultrasonic testing, magnetic particle inspection, or radiography are used to detect any hidden defects such as cracks, voids, or inclusions. 5. Weld Inspection: If welding is involved, the inspector checks the welds for proper penetration, alignment, and quality. This ensures the integrity and strength of the joint. 6. Documentation: Throughout the inspection process, the inspector maintains detailed records of the inspections conducted, measurements taken, test results, and any identified defects. These documents serve as evidence of compliance and can be referred to in case of disputes or future reference. 7. Reporting and Communication: After completing the inspection, the inspector prepares a detailed report summarizing the findings. This report is shared with the project management team, engineers, and other relevant stakeholders, highlighting any non-compliance, defects, or areas that need attention. Overall, the process of inspecting steel rebars on-site is a comprehensive and systematic approach that ensures the quality, integrity, and compliance of the rebars with the project specifications and industry standards.

Q: Do steel rebars need to be coated with any protective materials?: Yes, steel rebars commonly need to be coated with protective materials such as epoxy or galvanization to prevent corrosion and extend their lifespan.

Q: How are steel rebars protected against rust or corrosion?: Corrosion protection is essential for steel rebars to prevent rust and corrosion. Various methods are employed to ensure the durability and longevity of steel rebars in construction projects. Among these methods, the application of protective coatings, such as epoxy, zinc, or polyethylene, is commonly used. Epoxy coatings are frequently chosen because they create a formidable barrier against moisture and oxygen, effectively preventing rust formation. These coatings are typically fused onto the surface of the steel rebar through a process called fusion bonding, where the epoxy coating is melted and adheres to the steel. In contrast, zinc coatings are applied through galvanizing or metallizing. Galvanizing involves immersing the steel rebar in molten zinc, which forms a protective layer. Metallizing, on the other hand, entails spraying molten zinc onto the steel surface. Both methods produce a sacrificial zinc layer that shields the steel rebar from corrosion. Polyethylene coatings are also effective in corrosion protection. They are applied using a heat shrink process, where a polyethylene sleeve is wrapped tightly around the steel rebar and heated. This creates a robust and impervious layer that resists moisture and chemicals, guaranteeing long-term protection against rust and corrosion. Additionally, stainless steel rebars can be utilized to prevent corrosion. Stainless steel possesses innate corrosion-resistant properties due to the presence of chromium. The chromium forms a passive oxide layer on the surface, acting as a protective barrier against rust and corrosion. Therefore, stainless steel rebars are highly durable and long-lasting. In conclusion, safeguarding steel rebars against rust and corrosion is vital to ensure the structural integrity and longevity of construction projects. By applying protective coatings such as epoxy, zinc, or polyethylene, or by utilizing stainless steel rebars, the risk of corrosion is significantly minimized. This enables the steel rebars to endure harsh environmental conditions and remain intact for many years.

Q: Are there any specific safety measures to be taken while working with steel rebars?: Yes, there are specific safety measures to be taken while working with steel rebars. Some important safety precautions include wearing personal protective equipment such as gloves, safety goggles, and steel-toed boots, as well as using proper lifting techniques to prevent strain or back injuries. It is also crucial to maintain a clean and organized work area, secure the rebars properly to prevent them from falling or rolling, and ensure that all workers are trained in safe handling and cutting techniques. Additionally, regular inspections of the rebars for potential defects or damage should be conducted to avoid any accidents or structural issues.

Q: Are steel rebars resistant to chemical attacks?: Yes, steel rebars are generally resistant to chemical attacks. The high strength and durability of steel make it less susceptible to damage from various chemicals, including acids and alkalis. However, certain aggressive chemicals or environments may cause corrosion over time, which can be mitigated by applying protective coatings or using corrosion-resistant alloys.

Q: What is the lifespan of steel rebars in concrete structures?: The lifespan of steel rebars in concrete structures can vary depending on several factors such as the quality of the steel, the environment in which the structure is located, and the level of maintenance. However, with proper design, construction, and maintenance, steel rebars in concrete structures can typically last for several decades to over a century.

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