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:16 meters of thread steel, how many meters?: Steel is known as hot rolled ribbed bar. Ordinary hot rolled steel bars are made up of HRB and the minimum yield point of the brand. H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words.

Q:What is the average lifespan of steel rebars in a structure?: The average lifespan of steel rebars in a structure can vary depending on several factors such as the quality of the steel, environmental conditions, maintenance, and structural design. However, in general, steel rebars are designed to last for several decades, with an average lifespan ranging from 50 to 100 years.

Q:How do steel rebars improve the structural integrity of concrete?: The structural integrity of concrete is greatly improved by steel rebars in several ways. Firstly, they bolster the tensile strength of concrete, which is otherwise feeble in tension. While concrete excels in compressive strength, it lacks the ability to withstand pulling or stretching forces. By inserting steel rebars into the concrete, the overall tensile strength of the structure is significantly heightened. The steel rebars function as reinforcement by dispersing stress and load across a wider area, preventing cracks and fractures from spreading through the concrete. They establish a sturdy bond between the concrete and the reinforcement, enabling the structure to bear heavy loads and withstand bending, shearing, and other forces that could jeopardize its stability. Furthermore, steel rebars aid in managing and mitigating the impacts of shrinkage and thermal expansion and contraction that occur in concrete. These occurrences frequently lead to cracking and structural damage. The steel rebars help restrict the movement of the concrete, lessening the likelihood of crack formation and ensuring the overall integrity of the structure. Moreover, steel rebars prolong the durability and lifespan of concrete structures. They possess a high resistance to corrosion, which is particularly crucial in environments with elevated moisture levels, chemical exposure, or contact with saltwater. The presence of steel rebars safeguards the concrete from deterioration and extends the lifespan of the structure. In conclusion, steel rebars play a vital role in enhancing the structural integrity of concrete by fortifying its tensile strength, distributing stress and loads, preventing cracks, managing shrinkage, resisting bending and shearing forces, and increasing durability. They provide a dependable and efficient reinforcement system that guarantees the stability and longevity of concrete structures.

Q:The effect of adding alum on thread steel: Vanadium can remarkably improve the weldability of ordinary low carbon low alloy steel. Vanadium is an excellent deoxidizer for steel. 0.5% of the vanadium in the steel can refine the grain and improve the strength and toughness. The carbides formed by vanadium and carbon can improve hydrogen corrosion resistance under high temperature and high pressure.

Q:What is the impact of steel rebars on the overall thermal performance of a building?: Steel rebars have a minimal impact on the overall thermal performance of a building. Since steel is a good conductor of heat, it can slightly increase heat transfer through the walls or floors where rebars are present. However, the thermal conductivity of steel is relatively low compared to other building materials, such as concrete or glass, so the overall impact on the building's thermal performance is generally limited. Proper insulation and design considerations can mitigate any potential heat loss or gain caused by steel rebars.

Q:Can steel rebars be used in seawater desalination plants?: Yes, steel rebars can be used in seawater desalination plants. However, it is important to consider the potential effects of corrosion due to the high salt content in seawater. To mitigate this risk, various measures can be taken. One common approach is to use corrosion-resistant alloys, such as stainless steel rebars or epoxy-coated rebars, to protect against the corrosive effects of saltwater. Additionally, proper maintenance and monitoring can help prevent and identify any corrosion issues. Overall, while steel rebars can be used in seawater desalination plants, it is crucial to implement corrosion protection measures to ensure their longevity and structural integrity.

Q:How are steel rebars used in reinforced concrete structures?: Steel rebars are used in reinforced concrete structures to provide additional strength and resistance to tension forces. They are embedded within the concrete, creating a composite material that can withstand greater loads and prevent cracks from forming. The rebars act as a reinforcement, helping to distribute the applied loads evenly throughout the structure and enhancing its durability and structural integrity.

Q:How are steel rebars measured?: Steel rebars are measured using a standardized system known as the "bar size number." This system assigns a numerical value to each rebar size, which corresponds to the diameter of the rebar. The diameter is measured in inches or millimeters, depending on the region or country. In the United States, the bar size number is used, which ranges from #3 to #18. The number indicates the diameter of the rebar in eighths of an inch. For instance, a #3 rebar has a diameter of 3/8 inch, while a #8 rebar has a diameter of 1 inch. Beyond #8, the diameter is measured in quarters of an inch. For example, a #11 rebar has a diameter of 1 1/8 inches, and a #18 rebar has a diameter of 2 1/4 inches. In metric countries, rebars are measured using millimeters. The diameter is typically rounded to the nearest millimeter. For instance, a 10 mm rebar is equivalent to a #3 rebar in the US, and a 25 mm rebar is equivalent to a #8 rebar. To measure the length of a rebar, a tape measure or ruler is used. The length is typically measured in feet or meters. Rebars are commonly available in lengths of 20 or 40 feet (6 or 12 meters), but they can also be cut to custom lengths as per project requirements. It is important to note that the measurement system may vary slightly in different regions or countries, so it is crucial to consult local standards and codes for accurate measurement guidelines.

Q:What are the guidelines for the proper spacing of steel rebars in columns?: Various national and international codes and standards, such as the American Concrete Institute (ACI) and the British Standards Institution (BSI), provide guidelines for the proper spacing of steel rebars in columns. These guidelines are crucial in ensuring the durability and structural integrity of reinforced concrete columns. The spacing of steel rebars in columns is primarily influenced by the following factors: 1. Concrete cover: Codes specify a minimum concrete cover to protect the steel reinforcement from corrosion and provide fire resistance. The spacing between rebars should maintain a uniform concrete cover around each rebar. 2. Rebar diameter: The size or diameter of rebars affects their spacing. Codes mandate a minimum clear spacing between adjacent rebars based on their diameter to prevent congestion and ensure proper concrete placement. 3. Column dimension: The size and shape of the column play a significant role in determining rebar spacing. Larger columns may require more rebars compared to smaller ones to provide sufficient reinforcement and resist applied loads. 4. Load and design requirements: Design loads, including dead loads, live loads, and seismic loads, impact rebar spacing. Codes provide guidelines on the minimum amount of reinforcement required based on column dimensions and anticipated loads. 5. Structural detailing: Proper detailing is crucial to ensure rebars are adequately anchored and lapped, developing the required bond strength. Codes provide guidelines for lapping lengths, anchorage lengths, and splices to ensure force transfer between rebars and concrete. Consulting the specific code or standard applicable in your region is crucial to determine the exact guidelines for rebar spacing in columns. It is also recommended to involve a qualified structural engineer or designer to perform detailed analysis and design of reinforced concrete columns, ensuring compliance with the appropriate guidelines and achieving a safe and efficient structural system.

Q:Why is the earthing device forbidden to use thread steel instead of round steel as lap steel bar?: H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words. Hot rolled ribbed bar is divided into two levels, HRB335 (old No. 20MnSi), three HRB400 (20MnSiV, 20MnSiNb, old No. 20Mnti), four grade HRB500 three grade.

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