High quality deformed bar 6mm-50mm BS4449

High quality deformed bar 6mm-50mm BS4449 System 1

High quality deformed bar 6mm-50mm BS4449

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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:What is the difference between hot-rolled and cold-worked steel rebars?: Hot-rolled steel rebars are made by heating the steel billets to high temperatures and then rolling them into the desired shape, resulting in a rougher surface texture. On the other hand, cold-worked steel rebars are produced at room temperature, undergoing processes like cold drawing or cold rolling, which improve the surface finish and dimensional accuracy. Cold-worked rebars are often used in applications where a smoother surface is required, such as in concrete reinforcement or in the manufacturing of precision components.

Q:Do steel rebars have any impact on the fire resistance of a structure?: Yes, steel rebars have a significant impact on the fire resistance of a structure. The use of steel rebars in reinforced concrete provides additional strength and stability to the structure, especially during a fire. Due to their high melting point and heat transfer resistance, steel rebars help to maintain the structural integrity of the building for a longer period of time, allowing occupants to evacuate safely and giving firefighters more time to control the fire.

Q:What is the purpose of ribbing on a steel rebar?: The purpose of ribbing on a steel rebar is to enhance the bond strength between the rebar and the concrete. The ribs on the surface of the rebar provide a larger surface area for the concrete to adhere to, increasing the overall strength and stability of the reinforced concrete structure.

Q:How do steel rebars affect the overall sound insulation of a building?: Steel rebars do not have a direct impact on the overall sound insulation of a building. The primary purpose of steel rebars in construction is to reinforce concrete structures and provide strength and stability. Sound insulation is primarily influenced by the materials and design of the walls, floors, and ceilings, as well as proper installation of acoustic barriers and insulation materials. While steel rebars can transmit sound to some extent due to their density, their impact on sound insulation is generally negligible compared to other factors. Sound insulation in buildings is achieved by using materials with high sound absorption properties, such as acoustic insulation panels, mineral wool, or soundproofing barriers.

Q:Are there any limitations in using steel rebars in construction?: Yes, there are limitations in using steel rebars in construction. Some limitations include susceptibility to corrosion in certain environments, high thermal conductivity, and potential for expansion or contraction due to temperature changes. Additionally, steel rebars have a relatively high weight, which can make transportation and installation more challenging. However, these limitations can be mitigated through proper design, material selection, and maintenance strategies.

Q:Can steel rebars be used in industrial construction projects?: Yes, steel rebars are commonly used in industrial construction projects. They provide strength and reinforcement to concrete structures, ensuring stability and durability. Steel rebars are preferred due to their high tensile strength, resistance to corrosion, and ability to handle heavy loads, making them suitable for a wide range of industrial construction applications.

Q:How do steel rebars contribute to the overall safety of a structure?: Steel rebars contribute to the overall safety of a structure in several ways. Firstly, they provide reinforcement to concrete, which is a brittle material and prone to cracking under tension. By embedding steel rebars within the concrete, the structure gains enhanced tensile strength, allowing it to withstand greater loads and resist cracking or failure. Secondly, steel rebars help to distribute and dissipate stress throughout the structure. When a load is applied to a structure, such as an earthquake or heavy winds, it creates internal forces that need to be managed and dispersed. Steel rebars act as a network of interconnected bars, transferring the load from one rebar to another, and eventually to the foundation. This helps to prevent localized stress concentrations and ensures that the structure can better withstand external forces. Moreover, steel rebars improve the ductility of a structure. Ductility refers to a material's ability to deform without breaking. When a structure is subjected to extreme forces, such as seismic activity or high winds, it needs to be able to flex and absorb energy without collapsing. Steel rebars provide this ductility by elongating and deforming under stress, absorbing and dissipating energy before reaching a critical point of failure. This characteristic makes steel rebars crucial in protecting the overall integrity of the structure and ensuring the safety of its occupants. Furthermore, steel rebars also contribute to the long-term durability of a structure. Concrete is susceptible to various environmental factors, such as moisture, temperature fluctuations, and chemical exposure, which can lead to deterioration and weakening over time. By reinforcing the concrete with steel rebars, the structure becomes more resistant to these factors and maintains its strength and stability for a longer period. In conclusion, steel rebars play a vital role in ensuring the overall safety of a structure. They enhance the tensile strength of concrete, distribute stress, improve ductility, and increase the durability of the structure. By providing these essential properties, steel rebars greatly reduce the risk of structural failure and protect the lives and well-being of those within the building.

Q:What is the difference between rebar bolts and steel bars?: This question can only be answered: "material should not be compared to components.". Insist on saying the difference, one is the material, and the other is the component.You may ask the difference between soil nail and anchor bar, but the topic is not. I shall be glad to answer another question!

Q:What's the difference between primary and two grade steel and three grade steel?: There are two levels of steel rebar, three steel, four steel grade difference, no grade steel, there are a lot of customers to wire (round) mistakenly called a steel. At present, China is gradually out of grade two steel, four steel grade two steel grade HRB335, three grade steel grade HRB400, four grade of steel wire is HRB500, (Pan Yuan) new material grades are HPB195, HPB235, HPB300, old wire material grades corresponding is Q195, Q235.

Q:How are steel rebars affected by chemical exposure?: Steel rebars can be affected by chemical exposure in several ways. Certain chemicals, such as acids, alkalis, and chlorides, can cause corrosion of the rebar, leading to a reduction in its strength and durability. The chemical reaction between the rebar and the corrosive substances can result in the formation of rust, which can weaken the steel and compromise the structural integrity of the reinforced concrete. Therefore, it is crucial to protect steel rebars from chemical exposure by using appropriate coatings or by ensuring proper concrete cover to prevent corrosion and maintain the long-term performance of the structure.

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