ASTM GR60 deformed steel bar for construction

ASTM GR60 deformed steel bar for construction System 1

ASTM GR60 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:: 100000 m.t./month

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Product Description:

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

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q4: What makes stainless steel stainless?

A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

ASTM GR60 deformed steel bar for construction

Q:Can steel rebars be used in wastewater treatment plant construction?: Certainly, steel rebars are applicable for the construction of wastewater treatment plants. They are frequently utilized in the development of reinforced concrete structures, specifically in the context of wastewater treatment facilities. These rebars contribute to the concrete's enhanced strength and durability, enabling it to endure the harsh and corrosive conditions commonly encountered in such facilities. To shield the rebars from the corrosive impact of wastewater, they are typically coated with epoxy or other corrosion-resistant substances. Furthermore, the proper design and positioning of the rebars guarantee the structural soundness and longevity of the treatment plant. In conclusion, steel rebars serve as a widely employed and effective reinforcement material in wastewater treatment plant construction.

Q:What are the common sizes of steel rebars used in construction?: The common sizes of steel rebars used in construction typically range from #3 (3/8 inch diameter) to #11 (1 3/8 inch diameter).

Q:Why is thread steel thinner than crude?: Because the surface has a thread shape, it can increase the firm bond with the concrete. The longitudinal reinforcement and stirrups shall be used preferentially in the concrete members. Because the rebar is low alloy steel and its price is higher than that of low carbon round steel, the construction unit or design unit usually starts from the practical angle of the general civil building

Q:Can steel rebars be used in architectural concrete elements?: Yes, steel rebars can be used in architectural concrete elements. Steel rebars are commonly used in concrete construction to provide reinforcement and increase the strength and durability of the concrete structure. In architectural concrete, rebars can be strategically placed to enhance the structural integrity of the elements while also adding aesthetic value. The rebars can be exposed or hidden within the concrete, depending on the desired design outcome. By using steel rebars, architects have the flexibility to create complex and unique architectural elements while ensuring the required strength and stability.

Q:How do steel rebars affect the overall lifespan of bridge structures?: Steel rebars play a crucial role in enhancing the overall lifespan of bridge structures. By providing reinforcement and strength to the concrete, rebars help to distribute the load and increase the structural integrity of the bridge. Firstly, steel rebars are used to reinforce the concrete components of the bridge, such as beams, columns, and slabs. This reinforcement prevents the formation of cracks and minimizes the risk of structural failure. The rebars act as a support system, enabling the concrete to withstand heavy loads, vibrations, and external forces, such as wind and earthquakes. This reinforcement helps to maintain the structural stability of the bridge throughout its lifespan. Moreover, steel rebars also resist corrosion, which is a major concern for bridge structures exposed to harsh environmental conditions, such as saltwater or high humidity. Corrosion of the reinforcing bars can lead to the degradation of the concrete and weaken the entire structure. However, steel rebars are typically coated with protective materials or made from corrosion-resistant alloys, which significantly reduces the risk of corrosion and extends the lifespan of the bridge. Furthermore, steel rebars allow for flexibility and adaptability in bridge design and construction. They can be easily bent, shaped, and positioned to meet the specific structural requirements of the bridge. This flexibility enables engineers to design bridges with different shapes, spans, and load capacities, enhancing their overall durability and lifespan. In conclusion, steel rebars have a substantial impact on the overall lifespan of bridge structures. By reinforcing the concrete, resisting corrosion, and providing flexibility in design and construction, steel rebars significantly enhance the structural integrity and durability of bridges, ensuring their safe and long-lasting operation.

Q:What is the maximum allowable percentage of rust on steel rebars?: The maximum allowable percentage of rust on steel rebars is typically 5%.

Q:What are the guidelines for proper curing of concrete structures with steel rebars?: The guidelines for proper curing of concrete structures with steel rebars include ensuring that the concrete is adequately hydrated through moist curing methods such as sprinkling water or covering with wet burlap. It is crucial to maintain a consistent and controlled temperature and humidity environment during the curing process to prevent cracking and enhance the strength development of the concrete. Additionally, it is essential to avoid rapid drying and exposure to extreme temperature variations to avoid any potential damage to the steel rebars.

Q:What are the common quality control tests for steel rebars?: Steel rebars undergo several quality control tests to ensure they meet industry standards and specifications. These tests assess the rebars' physical, mechanical, and chemical properties to guarantee their durability and performance. Common quality control tests for steel rebars include: 1. Tensile Test: This test determines the rebars' tensile strength, yield strength, and elongation. It involves gradually applying force to the rebar until it breaks, measuring the maximum force it can withstand. 2. Bend Test: This test evaluates the rebars' ability to withstand bending without cracking. The rebar is bent to a specific angle and inspected for visible cracks. 3. Chemical Composition Analysis: This test determines the rebars' chemical composition, ensuring they meet required standards. It involves analyzing the levels of carbon, manganese, phosphorus, sulfur, and other elements. 4. Visual Inspection: This test visually examines the rebars for surface defects like cracks or irregularities that could impact structural integrity. 5. Dimensional Inspection: This test verifies the rebars' dimensions and shape, checking for deviations from specified requirements. Instruments are used to measure diameter, length, and shape. 6. Weldability Test: If the rebars will be welded, a test is performed to assess their suitability for welding. The quality of the weld joint, including strength and brittleness, is evaluated. 7. Corrosion Resistance Test: This test determines the rebars' resistance to corrosion, which is crucial for long-term durability. It involves subjecting the rebars to accelerated corrosion conditions and assessing their resistance. These tests are essential in ensuring the quality and reliability of steel rebars used in construction projects. Manufacturers and inspectors can identify non-compliant or substandard rebars through these tests, ensuring the safety and structural integrity of buildings and infrastructure.

Q:What are the safety precautions to be followed while working with steel rebars?: When working with steel rebars, it is important to follow several safety precautions to ensure a safe working environment. Some of these precautions include wearing personal protective equipment such as gloves, safety glasses, and steel-toed boots to protect against potential hazards. Additionally, workers should be trained on proper handling techniques to prevent injuries. It is also crucial to ensure that the work area is well-ventilated to prevent exposure to harmful fumes. Regular inspections of the equipment and tools used should be conducted to identify and address any potential hazards. Finally, communicating and adhering to safety protocols, such as proper lifting techniques and maintaining a clutter-free work area, are essential to minimize accidents and injuries while working with steel rebars.

Q:How do steel rebars affect the weight of a concrete structure?: The weight of a concrete structure can be significantly impacted by steel rebars. These rebars, typically made of steel, reinforce the concrete and enhance its strength and durability. They are primarily placed in areas of concrete under tension, such as the bottom of beams or the middle of slabs. While the presence of steel rebars does add to the overall weight of the structure, it also allows for the use of less concrete. By adding reinforcement, the concrete can withstand higher loads and stresses, reducing the need for excessive amounts of concrete. As a result, the structure becomes lighter. Furthermore, steel rebars enable the design and construction of more slender and efficient structures. The increased strength provided by the rebars allows for longer spans and thinner sections, which reduces the dead load. This not only decreases the weight of the structure but also offers more flexibility in architectural and structural design. In addition, the weight of a concrete structure is a critical consideration, particularly in high-rise buildings or long-span structures. Excessive weight can strain the foundation and increase construction costs. By utilizing steel rebars, the weight of the concrete structure can be optimized without compromising its structural integrity. To sum up, steel rebars play a crucial role in reducing the weight of concrete structures. They enable the use of less concrete while maintaining the required strength, resulting in lighter and more efficient structures. The use of rebars also provides flexibility in design and reduces construction costs associated with excessive weight.

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