Hot rolled deformed bar 6mm-50mm HRB400 ASTM A615

Hot rolled deformed bar 6mm-50mm HRB400 ASTM A615 System 1

Hot rolled deformed bar 6mm-50mm HRB400 ASTM A615

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000 m.t./month

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Deformed Bar Details:

Minimum Order Quantity:	m.t.	Unit:	m.t.	Loading Port:
Supply Ability:	m.t./month	Payment Terms:	TT OR LC	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: Are there any limitations on the maximum number of steel rebars that can be used in a concrete element?: Yes, there are limitations on the maximum number of steel rebars that can be used in a concrete element. These limitations are usually specified by building codes, structural design standards, and engineering principles. The maximum number of rebars is determined by factors such as the size and dimensions of the concrete element, the load it needs to support, and the required spacing and arrangement of rebars to ensure proper reinforcement and structural integrity.

Q: What is the process of testing the quality of steel rebars?: The process of testing the quality of steel rebars involves several steps to ensure their compliance with industry standards and specifications. 1. Visual Inspection: This initial step involves a visual examination of the rebars to identify any visible defects, such as cracks, surface irregularities, or improper dimensions. 2. Chemical Composition Analysis: A sample of the steel rebars is taken and subjected to chemical analysis to determine its composition, including the percentage of carbon, manganese, sulfur, phosphorus, and other elements. This analysis ensures that the steel meets the required composition standards for strength and durability. 3. Tensile Strength Test: A tensile strength test is conducted to measure the maximum amount of stress that the steel rebars can withstand without deformation or failure. This is achieved by applying a gradually increasing load to a sample of the rebar until it breaks. The tensile strength is then determined by dividing the breaking load by the cross-sectional area of the sample. 4. Bend Test: In the bend test, a sample of the rebar is bent to a specified angle without any cracks or fractures occurring. This test evaluates the rebar's ductility, which is crucial for its ability to withstand bending and shaping during construction. 5. Weldability Test: If the steel rebars are intended for use in welded structures, a weldability test is performed. This test assesses the ability of the rebars to be welded without any issues, such as cracking or loss of strength. 6. Dimensional and Weight Inspection: The rebars are measured for their dimensions, including length, diameter, and weight, to ensure compliance with the required specifications. Any deviations may indicate a potential quality issue. 7. Corrosion Resistance Test: Steel rebars are often exposed to harsh environmental conditions, including moisture and corrosive substances. Therefore, a corrosion resistance test is conducted to evaluate the rebar's ability to withstand corrosion over time. This test is typically carried out by subjecting the rebars to a corrosive environment or by using accelerated corrosion testing methods. 8. Non-Destructive Testing (NDT): NDT techniques, such as ultrasonic testing, magnetic particle inspection, or radiographic testing, may be employed to detect any internal defects or irregularities that are not visible to the naked eye. These tests help ensure the integrity and quality of the rebars. 9. Certification and Documentation: Once all the tests are completed and the steel rebars meet the required standards, they are certified and documented accordingly. This documentation serves as evidence of the quality and compliance of the rebars and is crucial for construction projects to ensure safety and durability. By following these comprehensive testing procedures, the quality of steel rebars can be thoroughly assessed, providing assurance to builders, engineers, and end-users that the steel rebars meet the necessary quality standards for their intended applications.

Q: Can steel rebars be used in underground construction projects?: Yes, steel rebars can be used in underground construction projects. Rebars are commonly used in all types of construction projects, including underground structures. The main purpose of steel rebars is to reinforce concrete and provide additional strength and stability to the structure. In underground construction, rebars are often used in the construction of foundations, walls, and columns to strengthen the concrete and ensure the integrity of the structure. The use of steel rebars in underground construction projects helps to increase the load-bearing capacity of the concrete, making it more resistant to the pressure and forces exerted by the surrounding soil and groundwater. Additionally, steel rebars are highly durable and resistant to corrosion, which makes them suitable for underground environments where they may be exposed to moisture and other potentially damaging elements. Overall, the use of steel rebars in underground construction projects is essential for ensuring the structural stability and longevity of the underground structures.

Q: What are steel rebars made of?: Steel rebars are made of carbon steel, which is an alloy of iron and carbon.

Q: What is the lifespan of a steel rebar in a concrete structure?: The duration of a steel rebar's existence within a concrete structure may differ due to various factors. Generally, a well-designed and properly constructed concrete structure with steel reinforcement can endure for 50 to 100 years or even longer. One critical factor that affects its lifespan is the quality of the concrete and its ability to shield the steel reinforcement from external elements. Concrete acts as a barrier, safeguarding the steel rebar from moisture, oxygen, and other potentially corrosive substances. However, if the concrete is of inadequate quality, contains excessive amounts of chloride or other aggressive chemicals, or is not adequately cured, it can result in the deterioration of the rebar and significantly reduce its lifespan. Another significant aspect is the exposure conditions to which the concrete structure is exposed. If the structure is situated in a harsh environment with high levels of humidity, exposure to saltwater, or industrial pollutants, it can expedite the corrosion process and decrease the rebar's lifespan. Proper maintenance and periodic inspections can also have a substantial impact on prolonging the steel rebar's lifespan within a concrete structure. Regular inspections can help identify any initial signs of corrosion or deterioration, enabling timely repairs or implementation of protective measures. To enhance the lifespan of steel rebar, additional protective measures can be taken during construction, such as applying corrosion-resistant coatings or utilizing stainless steel reinforcement. These measures can significantly extend the rebar's lifespan and improve the overall durability of the concrete structure. In conclusion, the lifespan of a steel rebar in a concrete structure can vary but generally falls within the range of 50 to 100 years or more, assuming the concrete is of good quality, the exposure conditions are not excessively severe, and proper maintenance and protective measures are implemented.

Q: What are the different types of steel rebars?: There are several different types of steel rebars, including mild steel rebar, deformed steel rebar, epoxy-coated steel rebar, stainless steel rebar, and galvanized steel rebar.

Q: Can steel rebars be used in the construction of high-speed rail tracks?: Yes, steel rebars can be used in the construction of high-speed rail tracks. Steel rebars are commonly used as reinforcement in concrete structures, including railway tracks. They provide strength and durability, making them suitable for high-speed rail tracks that require stability and resistance to heavy loads and vibrations.

Q: Can steel rebars be used in swimming pool construction?: Yes, steel rebars can be used in swimming pool construction. They are often used as reinforcement in the concrete structure of the pool to provide strength and durability. The rebars help to prevent cracking and ensure the pool can withstand the pressure of the water.

Q: Can steel rebars be used in structures with limited accessibility?: Yes, steel rebars can be used in structures with limited accessibility. Due to their small size and flexibility, rebars can be easily maneuvered and installed in areas with restricted access, making them suitable for various construction projects.

Q: What are the different uses of wire rod and thread steel?: According to statistics, China's construction industry accounts for about 50% of the total steel consumption. As one of the resources consuming industries, the construction industry must adjust the consumption structure of construction materials, energetically apply high-strength steel bars and high-performance coagulation, and take the road of economical development. If the current use of steel and concrete to raise an intensity level, it can bring enormous savings to society. For example, by calculation, according to the standard requirements, if the reinforced concrete leading force steel strength increased to 400-500N/mm2, then can be in the current level of steel consumption to save about 10%.

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