ASTM deformed steel bar for construction

ASTM deformed steel bar for construction System 1

ASTM deformed steel bar for construction System 2

ASTM deformed steel bar for construction

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 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

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.

ASTM deformed steel bar for construction

Q:What is the process of straightening steel rebars?: The process of straightening steel rebars involves using specialized machinery or tools to remove any bends or deformations in the rebars. This typically includes clamping the rebars in a straightening machine or using hydraulic forces to gently bend them back into their original shape. The rebars are carefully aligned and straightened to meet the required specifications, ensuring their structural integrity and effectiveness in construction projects.

Q:What is the impact of steel rebars on the aesthetics of a structure?: The impact of steel rebars on the aesthetics of a structure can be both positive and negative, depending on the design and execution of the project. Steel rebars, being an essential component of reinforced concrete, play a crucial role in providing structural integrity and strength to a building. However, their visibility can sometimes be considered as an aesthetic drawback. In some architectural designs, the presence of steel rebars is intentionally highlighted as part of the overall aesthetic concept. This approach is often seen in modern or industrial-style buildings, where exposed steel elements are celebrated for their raw, utilitarian appeal. In these cases, the rebars may be left exposed, creating a visually striking and unique design feature that adds character to the structure. On the other hand, in more traditional or refined architectural styles, the visibility of steel rebars might be considered unsightly and counter to the desired aesthetic. In such cases, architects and designers often employ strategies to conceal or minimize the appearance of rebars. This can be achieved by embedding the rebars deeper into the concrete, using decorative cladding or finishes, or integrating them within architectural features such as columns or beams. It is important to note that the impact of steel rebars on aesthetics goes beyond their visibility. The quality of construction and the precision in placing and aligning the rebars can greatly influence the overall appearance of a structure. Poorly executed reinforcement work can result in uneven surfaces, bulges, or visible imperfections, which can detract from the desired aesthetic appeal. Ultimately, the impact of steel rebars on the aesthetics of a structure depends on the specific design intent, architectural style, and quality of execution. With careful planning and attention to detail, rebars can be incorporated into the overall aesthetic vision of a building, either as a deliberate design element or seamlessly integrated to maintain a clean and refined appearance.

Q:What is the impact of steel rebars on the overall maintenance of a building?: Steel rebars have a significant impact on the overall maintenance of a building. These reinforcement bars provide structural strength and stability by enhancing the tensile strength of concrete. By preventing cracks and minimizing structural damage, steel rebars reduce the need for frequent repairs and maintenance. Additionally, their corrosion resistance properties enhance the longevity of the building, reducing maintenance costs and ensuring its structural integrity in the long run.

Q:How is steel rebar manufactured?: Steel rebar is manufactured through a process called hot rolling, where steel billets are heated and passed through a series of rollers to shape them into the desired rebar size and form. This process involves various stages such as heating, roughing, finishing, and cooling, resulting in the production of high-quality steel rebar used in construction projects.

Q:What is the process of deforming steel rebars for better adhesion with concrete?: The process of deforming steel rebars for better adhesion with concrete is known as ribbing or rib deformation. This process involves creating small ridges or raised patterns along the surface of the rebar, which enhances the bond between the concrete and the steel. The ribbing process is typically performed through a mechanical operation called cold rolling. Cold rolling is a metalworking process where the steel rebar is passed through a series of rollers, which exert pressure on the surface and cause plastic deformation. The rollers are designed with specific patterns or configurations that create the desired ribbing on the rebar. The purpose of ribbing is to increase the surface area of the rebar in contact with the concrete. The ridges or patterns created by the ribbing process provide additional points of adhesion for the concrete to grip onto, significantly improving the bond strength between the two materials. This enhanced bond is crucial for reinforcing concrete structures, as it helps to distribute loads and resist tensile forces. The ribbing process is commonly used in the construction industry for reinforcing concrete structures such as beams, columns, and slabs. The specific pattern and depth of the ribbing may vary depending on the project requirements and the type of rebar being used. Manufacturers often adhere to industry standards and guidelines to ensure the proper design and placement of ribbed rebars. In summary, the process of deforming steel rebars for better adhesion with concrete involves ribbing or creating ridges on the rebar's surface. This is achieved through cold rolling, where the rebar is passed through rollers designed with specific patterns. Ribbing increases the surface area and provides additional points of adhesion, improving the bond between the concrete and the rebar.

Q:How do steel rebars perform in extreme temperature conditions?: Steel rebars perform well in extreme temperature conditions. Steel has a high melting point and thermal conductivity, allowing it to maintain its structural integrity even at elevated temperatures. Additionally, steel has a low coefficient of thermal expansion, reducing the risk of cracking or warping due to thermal stress. However, it is important to consider the specific grade and composition of the steel rebar, as certain alloys may exhibit different behavior in extreme temperatures.

Q:JL32 is the finish thread heavy bar 32? What's the difference between normal and ordinary? What does the front JL32 mean?: Finishing rolling rebar strength than ordinary ribbed steel bars to be high, with spiral thread, tension nut after solid increase concrete prestressed (equivalent prestressed steel wire, steel wire type).

Q:How are steel rebars used in elevator shafts?: Steel rebars are used in elevator shafts to reinforce the concrete structures and provide strength and stability to the shaft walls. The rebars are typically placed vertically and horizontally within the concrete walls to enhance their load-bearing capacity and prevent any potential structural damage.

Q:How do steel rebars prevent concrete structures from cracking under load?: Steel rebars prevent concrete structures from cracking under load by providing reinforcement and increasing the tensile strength of the concrete. When the concrete is subjected to tensile forces, such as those caused by the weight or movement of the structure, it is prone to cracking. However, the inclusion of steel rebars within the concrete helps to distribute these tensile forces throughout the structure, making it more resistant to cracking. The steel rebars act as a framework, absorbing and dispersing the tension, thereby enhancing the overall structural integrity and preventing cracks from forming.

Q:How do steel rebars contribute to the overall occupant comfort of a building?: Steel rebars contribute to the overall occupant comfort of a building by providing structural strength and stability. They reinforce the concrete, ensuring that the building can withstand various forces such as wind, earthquakes, and heavy loads. This enhances the safety of the occupants, assuring them of a secure and stable structure. Additionally, steel rebars help in maintaining the integrity of the building over time, reducing the risk of cracks or structural failures that could negatively impact occupant comfort.

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