Hot rolled high quality deformed bar 10-50mm

Hot rolled high quality deformed bar 10-50mm System 1

Hot rolled high quality deformed bar 10-50mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 25000 m.t./month

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Deformed Bar Details:

Minimum Order Quantity:		Unit:	m.t.	Loading Port:
Supply Ability:		Payment Terms:		Package:	wire rod packing

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: How do steel rebars affect the load-bearing capacity of concrete structures?: Steel rebars significantly enhance the load-bearing capacity of concrete structures by providing tensile strength to resist cracks and prevent failure under heavy loads. The incorporation of rebars in concrete increases its overall structural integrity, allowing it to withstand greater stress and support larger loads without compromising its stability.

Q: How do steel rebars improve the strength and durability of concrete?: Steel rebars improve the strength and durability of concrete by providing reinforcement and resistance to tension forces. When embedded within the concrete, rebars act as a skeleton, distributing the load and preventing cracks from expanding. This enhances the overall structural integrity, increases the flexural strength, and reduces the risk of failure in concrete structures, making them more resilient and long-lasting.

Q: What is the effect of aging on the properties of steel rebars?: The properties of steel rebars can be impacted both positively and negatively by the process of aging. Aging involves gradual changes in the microstructure and mechanical properties of the rebars over time. One positive effect of aging is the enhancement of strength and hardness. Aging causes the carbon atoms in the steel to form carbides, resulting in increased strength. This strength improvement is advantageous in structural applications as it provides additional support and resistance against external forces and loads. On the other hand, aging can also have detrimental effects on steel rebars. As the rebars age, they become more vulnerable to corrosion. The formation of carbides during aging creates areas of low carbon content, known as decarburization, which increases the likelihood of rust and corrosion. This compromises the structural integrity of the rebars and reduces their lifespan. Moreover, aging can make the steel rebars more brittle. Changes in the microstructure during aging lead to increased brittleness and decreased ductility. This makes the rebars more prone to cracking and failure, especially under excessive loads or extreme temperatures. In conclusion, aging has a complex impact on the properties of steel rebars, with both positive and negative consequences. While aging can strengthen the rebars, it also raises the risk of corrosion and embrittlement. Proper maintenance and monitoring are crucial to mitigate the negative effects of aging and ensure the long-term performance and durability of steel rebars in structural applications.

Q: Can steel rebars be bent or shaped?: Yes, steel rebars can be bent or shaped. Rebars are commonly used in construction to reinforce concrete structures, and they are often bent or shaped to fit the specific design requirements of the project. The bending or shaping of rebars can be done using various tools and techniques, such as manual bending, mechanical bending machines, or hydraulic presses. The ability to bend or shape steel rebars allows for the creation of complex and customized reinforcement patterns, ensuring that the concrete structure can withstand the intended loads and stresses.

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: How do steel rebars contribute to the seismic performance of a structure?: Steel rebars contribute to the seismic performance of a structure by enhancing its strength and ductility. When embedded in concrete, rebars act as reinforcement, providing tensile strength to resist the forces generated during an earthquake. This reinforcement helps prevent cracking and failure in the concrete, allowing the structure to better absorb and dissipate seismic energy. Additionally, the flexibility and high yield strength of steel rebars enable them to deform and absorb seismic forces, reducing the likelihood of structural collapse during an earthquake.

Q: What is the standard diameter of steel rebars?: The standard diameter of steel rebars typically ranges from 6mm to 32mm.

Q: Can steel rebars be used in tunnels or underground transportation systems?: Yes, steel rebars can be used in tunnels or underground transportation systems. They are commonly used as reinforcement in concrete structures to enhance their strength and durability. Steel rebars help to withstand the pressure and stresses exerted on the tunnel or underground transportation system, making them a suitable choice for such applications.

Q: Can steel rebars be used in sports stadium construction?: Yes, steel rebars can be used in sports stadium construction. Steel rebars are commonly used as reinforcement in concrete structures, including sports stadiums, to enhance the strength and durability of the overall construction. The strong and durable nature of steel rebars makes them ideal for withstanding the heavy loads and stresses that sports stadiums often experience.

Q: Can steel rebars be used in the construction of residential towers?: Yes, steel rebars can be used in the construction of residential towers. Steel rebars provide strength and durability to reinforced concrete structures, making them an ideal choice for high-rise buildings like residential towers. They help reinforce the concrete and enhance its load-bearing capacity, ensuring the structural integrity and safety of the construction.

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