Deformed bars in Grade HRB400/500 with Best Quality

Deformed bars in Grade HRB400/500 with Best Quality System 1

Deformed bars in Grade HRB400/500 with Best Quality

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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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Product Description:

Specifications of HRB400 Deformed Steel Bar:

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
Brand name	DRAGON

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

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

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
10	78.54	0.617	7.404
12	113.1	0.888	10.656
14	153.9	1.21	14.52
16	201.1	1.58	18.96
18	254.5	2.00	24
20	314.2	2.47	29.64
22	380.1	2.98	35.76
25	490.9	3.85	46.2
28	615.8	4.83	57.96
32	804.2	6.31	75.72
36	1018	7.99	98.88
40	1257	9.87	118.44
50	1964	15.42	185.04

Usage and Applications of HRB400 Deformed Steel Bar:

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 HRB400 Deformed Steel Bar:

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

Q:What are the different types of steel rebars used in railway bridges?: There are several types of steel rebars used in railway bridges, including plain carbon steel rebars, epoxy-coated rebars, and stainless steel rebars. Each type of rebar offers unique properties and benefits to ensure the durability and strength of railway bridges.

Q:How do steel rebars contribute to the strength of concrete structures?: Steel rebars contribute to the strength of concrete structures in several ways. Firstly, they enhance the tensile strength of the concrete. While concrete is strong in compression, it is weak in tension. When tensile forces act on a concrete structure, such as when it is subjected to bending or stretching, the steel rebars bear the load and prevent the concrete from cracking or failing. Secondly, steel rebars help to control and prevent the propagation of cracks in concrete. By being embedded within the concrete, rebars provide a reinforcing framework that redistributes the stress throughout the structure. This helps to limit the formation and expansion of cracks, ensuring the overall integrity and durability of the concrete structure. Furthermore, steel rebars improve the overall structural stability and load-bearing capacity of concrete structures. By distributing the load more evenly, the presence of rebars allows concrete structures to withstand greater external forces, such as the weight of a building or the impact of seismic activity. In addition to their strength-enhancing properties, steel rebars also improve the longevity of concrete structures. The steel used in rebars is highly resistant to corrosion, which is a common issue in concrete structures exposed to harsh environmental conditions or corrosive elements. This resistance to corrosion ensures that the rebars maintain their strength and structural integrity over time, extending the lifespan of the concrete structure. In summary, steel rebars contribute significantly to the strength of concrete structures by enhancing the tensile strength, controlling crack propagation, improving structural stability, and increasing longevity. Their presence ensures that the concrete can withstand various external forces and maintain its structural integrity, making them an essential component in the construction of durable and reliable concrete structures.

Q:What is the content ratio of the screw steel and manganese steel?: The standard type of high manganese steel Mn13 steel and Hadfield steel, high manganese steel castings in China National Standard (GB/T5680-1998) grade: ZGMn13-1, ZGMn13-2, ZGMn13-3, ZGMn13-4, ZGMn13-5; ASTM (ASTMA128/A128M-1993) standard austenitic manganese steel casting steel are: ASTM-A (UNS-J9110.

Q:What is the purpose of steel rebars?: The purpose of steel rebars is to reinforce and strengthen concrete structures. Rebars, also known as reinforcing bars, are steel rods or wires that are used to provide additional strength to concrete by acting as a tension device. When embedded within the concrete, rebars help to distribute the applied loads more evenly, preventing the concrete from cracking or failing under pressure. This reinforcement is particularly important in structures such as buildings, bridges, and highways that are subjected to heavy loads or potential stress, as it enhances their durability and structural integrity. Steel rebars are widely used in construction projects as they are strong, durable, and resistant to corrosion, making them an essential component for ensuring the long-term stability and safety of concrete structures.

Q:Are steel rebars magnetic?: Yes, steel rebars are magnetic.

Q:Can steel rebars be used in structures with high resistance to creep?: Yes, steel rebars can be used in structures with high resistance to creep. Steel rebars are known for their high strength and durability, making them suitable for various construction applications, including structures that are designed to withstand creep.

Q:Can steel rebars be used in structures with high levels of chloride or sulfate attack?: No, steel rebars should not be used in structures with high levels of chloride or sulfate attack. Chloride attack occurs when chloride ions penetrate the concrete and react with the steel, causing corrosion. This can result in the degradation of the rebars and the overall structural integrity of the building. Similarly, sulfate attack occurs when sulfate ions react with the components of the concrete, leading to the formation of expansive compounds that cause cracking and deterioration. To prevent these types of attacks, alternative materials such as stainless steel rebars or corrosion-resistant alloys should be used in structures exposed to high levels of chloride or sulfate. These materials have a higher resistance to corrosion and can better withstand the aggressive chemical environment. Additionally, proper design and construction techniques, such as adequate concrete cover and the use of protective coatings, can also help mitigate the effects of chloride or sulfate attack. It is important to consult with structural engineers or corrosion specialists to determine the best approach for each specific project.

Q:What are the best practices for handling and storing steel rebars on a construction site?: The best practices for handling and storing steel rebars on a construction site include: 1. Ensuring proper training and supervision for workers involved in the handling and storage of rebars. 2. Using appropriate lifting equipment and techniques to prevent accidents and injuries. 3. Storing rebars in a designated area that is clean, dry, and well-ventilated to prevent rust and corrosion. 4. Organizing rebars based on size, type, and length to facilitate easy access and reduce the risk of tripping or falling. 5. Covering rebars with waterproof material or tarp to protect them from moisture and prevent rusting. 6. Regularly inspecting rebars for any signs of damage or defects and removing any compromised ones from the site. 7. Implementing proper signage and barriers around the rebar storage area to ensure safety and prevent unauthorized access.

Q:What are the common mistakes to avoid when handling and storing steel rebars?: When handling and storing steel rebars, it is important to avoid certain common mistakes to ensure their quality and longevity. Here are some mistakes that should be avoided: 1. Poor storage conditions: Storing steel rebars in damp or wet areas can lead to corrosion and rust. It is crucial to store them in a dry and well-ventilated space to prevent moisture accumulation. 2. Insufficient support: When stacking rebars, it is important to have proper support to prevent bending or deformation. Inadequate support can lead to rebar damage and compromise their structural integrity. 3. Improper lifting techniques: When handling rebars, it is essential to use proper lifting equipment and techniques. Using hooks or chains directly on the rebars can cause damage and weaken them. It is recommended to use lifting devices specifically designed for rebar handling. 4. Overloading: Avoid overloading storage racks or platforms with excessive weight. Overloading can cause structural failure and potentially injure workers. Always follow the manufacturer's guidelines for maximum weight capacity. 5. Lack of protection: Rebars should be protected from exposure to moisture, dirt, and other contaminants. Proper wrapping with plastic or waterproof covers can help prevent corrosion and maintain their quality. 6. Improper transportation: During transportation, care should be taken to secure the rebars properly to prevent movement or damage. Using appropriate restraints and padding can help prevent any potential accidents or rebar displacement. 7. Mixing different grades: Avoid mixing rebars of different grades together as they have varying strength and performance characteristics. Mixing different grades can compromise the overall structural integrity of the construction project. 8. Ignoring quality control: It is important to conduct regular quality checks on the rebars to ensure they meet the required specifications. Ignoring quality control can result in the use of substandard rebars, which can compromise the safety and durability of the structure. By avoiding these common mistakes, construction professionals can ensure the proper handling and storage of steel rebars, leading to safer and more durable structures.

Q:Are steel rebars suitable for use in high-rise buildings?: Yes, steel rebars are suitable for use in high-rise buildings. Steel rebars provide excellent strength, durability, and flexibility, making them ideal for reinforcing concrete structures in high-rise buildings. Their ability to resist tensile forces and bond with concrete ensures the structural integrity and stability required in tall buildings.

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