High Quality GB Standard Deformed Steel Rebar HRB400

High Quality GB Standard Deformed Steel Rebar HRB400 System 1

High Quality GB Standard Deformed Steel Rebar HRB400

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Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 50 m.t.

Supply Capability:: 100000 m.t./month

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Specifications of High Quality GB Standard Deformed Steel Rebar HRB400

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 of High Quality GB Standard Deformed Steel Rebar HRB400

(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 High Quality GB Standard Deformed Steel Rebar HRB400

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 High Quality GB Standard Deformed Steel Rebar HRB400

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

High Quality GB Standard Deformed Steel Rebar HRB400

Deformed Steel Bar in container

Deformed Steel Bar in factory

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: What is the difference between black and epoxy-coated steel rebars?: The main difference between black and epoxy-coated steel rebars is the protective coating. Black steel rebars do not have any coating, making them susceptible to corrosion when exposed to moisture or harsh environments. On the other hand, epoxy-coated steel rebars are covered with a layer of epoxy, which acts as a protective barrier against corrosion. This coating enhances the durability and longevity of the rebars, making them ideal for use in corrosive environments such as coastal areas or structures exposed to chemicals.

Q: What is the effect of steel rebars on the formwork design?: The presence of steel rebars in formwork design provides structural reinforcement and improves the overall strength and durability of the structure. The rebars help distribute the load and forces more effectively, allowing for the creation of thinner and lighter formwork designs. Additionally, steel rebars can be used to reinforce specific areas or joints where additional strength is required. Overall, incorporating steel rebars in formwork design enhances the structural integrity and longevity of the construction project.

Q: What are the different types of steel used in the production of rebars?: The production of rebars involves the use of different types of steel. The selection of steel depends on factors like desired strength, corrosion resistance, and cost. 1. The most commonly used steel in rebars is mild steel. It has a low carbon content and is relatively affordable. Mild steel rebars are suitable for general construction purposes that do not require high strength. 2. High Strength Deformed Bars (HSD) are made from carbon steel with higher yield and tensile strength than mild steel. They are commonly used in reinforced concrete structures like bridges and high-rise buildings that require higher load-bearing capacity. 3. Carbon steel rebars are made by alloying steel with carbon, which enhances their strength and durability. They are often used in construction projects that require resistance to extreme temperatures and high tensile strength. 4. Stainless steel rebars have a high chromium content, providing excellent corrosion resistance. They are commonly used in coastal areas or structures exposed to high humidity to prevent rusting and maintain structural integrity. 5. Epoxy-coated rebars have a protective coating of epoxy resin, which adds an extra layer of corrosion resistance. They are suitable for structures exposed to harsh environmental conditions or chemicals. 6. Galvanized rebars are coated with zinc for superior corrosion protection. They are commonly used in high humidity areas where corrosion is a significant concern. 7. Alloy steel rebars are made by adding elements like manganese, nickel, or chromium to enhance their mechanical properties. They offer increased strength, improved ductility, and resistance to fatigue, making them suitable for specialized applications like seismic zones or heavy construction. Selecting the appropriate type of steel rebar is crucial for ensuring the durability, safety, and longevity of the structure in a construction project.

Q: Can steel rebars be used in the construction of residential complexes?: Yes, steel rebars can be used in the construction of residential complexes. Steel rebars provide structural strength and reinforcement to concrete structures, ensuring stability and durability. They are commonly used in residential construction to reinforce foundations, beams, columns, and slabs, increasing the building's resistance to earthquakes, extreme weather conditions, and other external forces.

Q: What is the effect of moisture on steel rebars?: The effect of moisture on steel rebars can lead to corrosion, which weakens the rebars and reduces their structural integrity over time. Moisture can initiate the oxidation process, causing the rebars to rust and potentially compromise the stability of reinforced concrete structures. Regular inspection and maintenance are crucial to prevent and address any moisture-related damage to steel rebars.

Q: What is the fatigue strength of steel rebars?: The fatigue strength of steel rebars refers to their ability to withstand repeated loading and unloading cycles without experiencing failure or fatigue crack propagation. This strength can vary depending on factors such as the specific grade of steel, rebar size and shape, surface condition, and loading conditions. Generally, steel rebars have high fatigue strength due to their inherent toughness and ductility, making them suitable for applications in construction projects where cyclic loading is common, such as bridges, highways, and buildings.

Q: Can steel rebars be used in architectural detailing?: Yes, steel rebars can be used in architectural detailing. They are commonly used in reinforced concrete structures to provide strength and stability. Rebars can be shaped and arranged to create intricate architectural features and provide structural support where needed.

Q: How to calculate the theory of steel thread?: Thread: a spirally curved, continuous raised part with a specified cross section on the surface of a cylinder or cone. According to its parent thread shape is divided into cylindrical and conical screw threads; according to their position in the matrix is divided into outer and inner thread, according to the section shape (teeth) divided into triangular thread, rectangular screw, trapezoidal thread, serrated thread and other special shape screw.

Q: How do steel rebars help in load distribution within a structure?: Steel rebars, also referred to as reinforcing bars, are essential for the distribution of loads within a structure. They are extensively utilized in concrete structures, like buildings, bridges, and highways, to enhance their strength and durability. The main objective of steel rebars is to provide tensile strength to the concrete. While concrete is highly capable of withstanding compression, it is relatively frail when it comes to tension. Any structure exposed to loads, whether from the weight of the building itself or external forces, will encounter both compression and tension forces. By incorporating steel rebars into the concrete, they act as reinforcements and resist tensile forces. When an external load is applied to the structure, the rebars bear a significant portion of the generated tension forces. This prevents the concrete from cracking or failing under the applied load. Furthermore, steel rebars aid in the distribution of the load throughout the structure. When a load is imposed on a structure, it generates stress that is spread across the various components. The presence of rebars enables a more uniform distribution of these stresses, reducing the concentration of forces in specific areas. This prevents localized failures and ensures that the load is evenly dispersed across the structure, thereby improving its overall strength and stability. Another crucial aspect of steel rebars is their capacity to bond with concrete. The rough surface of the rebars prevents them from slipping or separating from the concrete, ensuring a robust bond between the two materials. This bond further enhances the distribution of loads by enabling the rebars to effectively transfer the tensile forces to the surrounding concrete. In conclusion, steel rebars play a critical role in the distribution of loads within a structure. They furnish the necessary tensile strength to withstand tension forces, distribute the load evenly across the structure, and bond with the concrete, guaranteeing a sturdy and stable construction. Without steel rebars, concrete structures would be considerably weaker and more prone to cracking or failure under load.

Q: How do steel rebars comply with building codes and regulations?: Steel rebars comply with building codes and regulations by meeting specific requirements outlined in these codes. These requirements include the dimensions, strength, and quality of the rebars, as well as their placement and spacing within the concrete structures. Compliance is ensured through rigorous testing and certification processes, ensuring that the rebars meet the necessary standards for safety and structural integrity in construction projects.

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