High quality hot rolled deformed bar 6mm-50mm

High quality hot rolled deformed bar 6mm-50mm System 1

High quality hot rolled deformed bar 6mm-50mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000000 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: Are steel rebars fire-resistant?: Steel rebars are not inherently fire-resistant. While steel has a high melting point, it can lose its structural strength when exposed to high temperatures for an extended period. However, the use of fire-resistant coatings or encasements can enhance the fire resistance of steel rebars in construction applications.

Q: How are steel rebars marked for identification on construction sites?: Steel rebars are typically marked with a series of symbols, numbers, and colors to identify their size, grade, and other specifications. These markings are usually either painted or embossed on the surface of the rebars, making it easier for construction workers to identify and use them correctly during the construction process.

Q: How are steel rebars protected during transportation?: Steel rebars are typically protected during transportation by being bundled together and secured with steel straps or wire ties. They may also be covered with a protective coating or wrapped in plastic to prevent corrosion and damage from moisture or other external elements. Additionally, rebars are often stored and transported on pallets or in specialized containers to ensure safe handling and prevent any bending or distortion.

Q: What are the different types of steel rebars used in marine structures?: The different types of steel rebars commonly used in marine structures include epoxy-coated rebars, stainless steel rebars, and galvanized rebars. These types of rebars are specifically chosen for their high corrosion resistance properties, as they are exposed to the harsh marine environment. Epoxy-coated rebars provide a protective coating that prevents corrosion, while stainless steel rebars are inherently resistant to corrosion. Galvanized rebars are coated with a layer of zinc to prevent rusting and offer excellent durability in saltwater conditions.

Q: What are the factors that determine the strength of steel rebars?: The factors that determine the strength of steel rebars include the chemical composition of the steel, the process of manufacturing and heat treatment, and the diameter and shape of the rebar. Additionally, factors such as the presence of impurities, the level of carbon content, and the microstructure of the steel also play a role in determining its strength.

Q: Can steel rebars be used in foundation reinforcement?: Yes, steel rebars can be used in foundation reinforcement. Steel rebars are commonly used in construction to strengthen and reinforce concrete structures, including foundations. They provide increased strength and durability, helping to prevent cracking and structural failure.

Q: How do steel rebars improve the ductility of concrete?: Steel rebars improve the ductility of concrete in several ways. Firstly, the presence of rebars helps to distribute and dissipate stress throughout the concrete structure, preventing the concentration of loads in specific areas. This even distribution of stress helps to prevent the formation of cracks or fractures, thus enhancing the overall ductility of the concrete. Secondly, when the concrete undergoes tension or bending forces, the rebars act as reinforcement to resist these forces. The steel rebars have high tensile strength compared to concrete, which is weak in tension. This reinforcement allows the concrete to withstand higher tensile stresses without breaking, increasing its ductility. Additionally, the bond between the steel rebars and the concrete matrix plays a crucial role in improving ductility. The rough surface of the rebars provides better adhesion with the surrounding concrete, increasing the transfer of stresses between the two materials. This bond prevents the rebars from slipping out of the concrete during deformation, ensuring the structural integrity and enhancing the ductility of the composite material. Moreover, the presence of steel rebars also contributes to the post-cracking behavior of concrete. When cracks develop under high loads, the rebars help to hold the concrete together and prevent further propagation of the cracks. This post-cracking behavior allows the concrete to maintain its load-bearing capacity even in a damaged state, thereby improving its overall ductility. In summary, steel rebars improve the ductility of concrete by distributing stress, resisting tension and bending forces, enhancing the bond between concrete and rebars, and providing post-cracking reinforcement. These combined effects result in a more flexible and durable concrete structure that can withstand deformation without catastrophic failure.

Q: Are steel rebars fire resistant?: Steel rebars are generally considered to possess fire resistance. Steel, as a material, cannot burn or contribute to the spread of fire because it is incombustible. When exposed to fire, steel rebars can endure high temperatures for a prolonged duration without compromising their structural integrity. This ability is attributed to the high melting point of steel, which stands at approximately 1370 degrees Celsius (2500 degrees Fahrenheit). Moreover, during construction, steel rebars are often encased in concrete, which adds an extra layer of protection against fire. However, it is important to note that under extremely intense and long-lasting fire conditions, steel may gradually weaken and lose its ability to bear loads. Hence, fire protection measures like the application of fire-resistant coatings or fireproofing materials are sometimes implemented to further enhance the fire resistance of steel structures.

Q: What is the importance of proper alignment of steel rebars in a structure?: The proper alignment of steel rebars in a structure is crucial for several reasons. Firstly, it ensures structural integrity and strength by distributing loads evenly and resisting forces such as compression, tension, and shear. Improperly aligned rebars can lead to weak points, compromising the stability and safety of the structure. Secondly, proper alignment helps maintain the desired shape and dimensions of the structure. It ensures that the rebars are positioned correctly to support the concrete during pouring, preventing any deformations or irregularities that could impact the overall aesthetics and functionality of the finished structure. Additionally, aligned rebars facilitate efficient construction processes. When rebars are correctly placed, it simplifies the process of pouring concrete, reducing the likelihood of delays or errors during construction. It also allows for easy placement of formwork, enabling smoother and faster construction progress. Lastly, proper alignment of rebars contributes to the longevity and durability of the structure. By ensuring the rebars are correctly positioned, the risk of corrosion and deterioration is minimized. This helps to prolong the lifespan of the structure, reducing maintenance and repair costs in the long run. In conclusion, the importance of proper alignment of steel rebars in a structure cannot be overstated. It enhances structural strength, maintains shape and dimensions, supports efficient construction processes, and increases the longevity of the structure.

Q: How much does a futures screw do?: More than 2000 dollars in one hand. Futures show a ton of the price, he is ten tons per hand. Suppose ten tons is 27000, suppose. If Futures Company receives 10% margin. That's 2700 dollars, one hand.

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