Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard

Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard System 1

Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard

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Loading Port:: Guangzhou

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 200000 m.t./month

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Product Description:

OKorder is offering Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

1. Supporting members, most commonly in the house raising industry to strengthen timber bears under houses. Transmission line towers, etc

2. Prefabricated structure

3. Medium scale bridges

4. It is widely used in various building structures and engineering structures such as roof beams, bridges, transmission towers, hoisting machinery and transport machinery, ships, industrial furnaces, reaction tower, container frame and warehouse etc.

Product Advantages:

Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard are durable, strong, and resist corrosion. And they are made of steel billets of high quality of China.

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Specifications:

Specifications of Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard:

Standard	GB UK USA	HRB335 HRB400 HRB500 G460B, B500A, B500B,B500C GR40, GR60
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm

Length	6M, 9M,12M or as required
Packing	Export standard packing: wrapped by wire rod in bundles
Each bundle weight	2-3MT, or as required
Trade terms	FOB, CFR, CIF
Payment terms	TT payment in advance or Irrevocable LC at sight.
Delivery Detail	within 45 days after received advanced payment or LC.
Brand name	DRAGON

Theoretical weight and section area of each diameter as below for your information:

Diameter(mm)	Section area (mm²)	Mass(kg/m)	Weight of 12m (kg)	Pcs/ton
6	28.27	0.222	2.664	375.38
8	50.27	0.395	4.74	210.97
10	78.54	0.617	7.404	135.06
12	113.1	0.888	10.656	93.84
14	153.9	1.21	14.52	68.87
16	201.1	1.58	18.96	52.74
18	254.5	2.00	24	41.67
20	314.2	2.47	29.64	33.74
22	380.1	2.98	35.76	27.96
25	490.9	3.85	46.2	21.65
28	615.8	4.83	57.96	17.25
32	804.2	6.31	75.72	13.21
36	1018	7.99	98.88	10.43
40	1257	9.87	118.44	8.44
50	1964	15.42	185.04	5.40

Chemical Composition: (Please kindly find our chemistry of our material based on JIS as below for your information)

JISG3112 SD390	Chemical Composition
	C	Mn	Si	S	P
	0.22	1.38	0.4	0.014	0.022
	Physical capability
	Yield Strength(N/cm²)		Tensile Strength(N/cm²)		Elongation (%)
	620		≥400		21

The production process of Steel Rebar

1-Waling beam furnace 2-Roughing rolling group 3-Intermediate rolling train

4-Finishing rolling group 5-Water-cooling device 6-Walking beam cooler

7-Finishing equipment(including the cold scale shear,short feet collection system,

automatic counting device,bundling machine, collect bench)

Usage and Applications of Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard:

Hot Rolled Deformed Steel Rebars for Buildings GB Standard 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 Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard:

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.

Price: Keep lower operating costs so as to offer competitive price for our clients

Deformed Steel Rebars according to Korean standard

Hot Rolled Deformed Steel Rebars for Buildings ASTM Standard

FAQ:

Q1: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q2: Why buy Deformed Steel Rebars for Buildings ASTM Standard 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.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q:How are steel rebars stored and transported?: Construction projects commonly use steel rebars, which are also known as reinforcing bars. The purpose of steel rebars in construction is to provide strength and stability to concrete structures. It is vital to properly store and transport steel rebars to maintain their quality and prevent any damage or accidents. Regarding storage, steel rebars are typically kept in a designated area known as a rebar yard or laydown yard. This area should be clean, well-drained, and free from debris or organic materials. To prevent corrosion or contamination, rebars are usually stacked in bundles or placed on elevated racks to avoid contact with the ground. To ensure safety and easy access, rebars should be organized and labeled based on their sizes and grades. This helps construction workers quickly identify and retrieve the required rebars without causing any disruption or delays in the project. When it comes to transportation, steel rebars are commonly loaded onto trucks or trailers for delivery to construction sites. It is crucial to secure the rebars adequately during transportation to avoid any shifting or movement that could damage the rebars or compromise the safety of the vehicle. Depending on their length and quantity, rebars can be transported in various ways. They can be bundled together using wires, straps, or steel bands to keep them in place. Additionally, wooden or metal supports can be used to prevent the rebars from bending or sagging during transit. During transportation, it is important to consider weight restrictions and road regulations to ensure compliance and safety. If rebars need to be transported over long distances, it is essential to coordinate with logistics companies that specialize in handling heavy and oversized cargo. In conclusion, steel rebars are stored in designated areas like rebar yards, where they are stacked, labeled, and protected from corrosion and contamination. During transportation, rebars are secured using wires, straps, or steel bands and loaded onto trucks or trailers. Proper handling and adherence to regulations are crucial to ensure the safety and integrity of the rebars during storage and transportation.

Q:How do steel rebars contribute to the crack control in concrete structures?: Steel rebars contribute to crack control in concrete structures by providing reinforcement and increasing the tensile strength of the concrete. Concrete is strong in compression but weak in tension, so when subjected to tensile forces, it tends to crack. By embedding steel rebars within the concrete, these cracks are minimized, as the rebars distribute the tensile forces and prevent them from causing large cracks. The rebars also help to hold the concrete together, providing additional support and preventing the propagation of cracks. Overall, steel rebars enhance the overall structural integrity and durability of concrete structures by effectively controlling and limiting cracks.

Q:How do steel rebars enhance the bond between concrete and reinforcement?: Steel rebars enhance the bond between concrete and reinforcement through various mechanisms. Firstly, the presence of rebars in concrete increases the mechanical interlock between the two materials. As concrete is poured around the rebars, it fills the gaps between the steel bars, creating a strong bond when it hardens. This mechanical interlock helps to prevent the separation of concrete and reinforcement, especially under tensile loads. Secondly, steel rebars enhance the bond by providing additional surface area for adhesion. The rough texture of the rebars allows the concrete to grip onto the steel surface, creating a stronger bond. This adhesion is further improved by the corrosion products that form on the surface of the steel rebars over time. These products create a rougher surface, increasing the bond strength between the concrete and reinforcement. Thirdly, rebars act as load transfer devices in concrete structures. When external forces are applied to the structure, the rebars distribute and transfer these forces to the surrounding concrete. This load transfer mechanism helps to improve the overall structural integrity and performance of the concrete element. Additionally, steel rebars also enhance the bond between concrete and reinforcement through their ability to resist deformation. Under tensile loads, the rebars elongate and absorb the stress, preventing the concrete from cracking. This prevents the development of cracks that could weaken the bond between the two materials. In summary, steel rebars enhance the bond between concrete and reinforcement by providing mechanical interlock, increased surface area for adhesion, load transfer capabilities, and resistance to deformation. These factors collectively contribute to the overall strength, durability, and performance of reinforced concrete structures.

Q:Can steel rebars be used in structures with high fire safety requirements?: Yes, steel rebars can be used in structures with high fire safety requirements. Steel has a high melting point and good fire resistance properties, making it suitable for use in fire-resistant structures. Additionally, steel rebars can be encased in fire-resistant materials such as concrete or intumescent coatings to enhance their fire resistance capabilities.

Q:How are steel rebars protected against chloride attack?: Steel rebars are protected against chloride attack through various methods such as coating them with epoxy or zinc, using stainless steel rebars, or adding admixtures like corrosion inhibitors to the concrete mix. These measures create a barrier that prevents chloride ions from penetrating the steel surface and causing corrosion.

Q:Can steel rebars be used in the construction of sports stadiums?: Yes, steel rebars can be commonly used in the construction of sports stadiums. Steel rebars provide strength and stability to the concrete structures used in stadium construction, ensuring the integrity and safety of the facility.

Q:What is the role of steel rebars in multi-story building construction?: The role of steel rebars in multi-story building construction is to provide reinforcement and strength to the concrete structure. By adding steel rebars to the concrete, it enhances its ability to withstand tensile forces and prevents cracking or collapsing. This reinforcement helps to ensure the structural integrity and durability of the building, making it safe and resilient against external loads and natural disasters.

Q:What are the guidelines for the proper anchoring of steel rebars in columns?: The guidelines for the proper anchoring of steel rebars in columns are essential to ensure the structural integrity and safety of the reinforced concrete structure. These guidelines are typically based on industry standards and codes, such as the American Concrete Institute (ACI) Building Code Requirements for Structural Concrete (ACI 318). 1. Lap Length: The lap length is the minimum distance required for the overlapping of rebars to provide sufficient bond strength. It is determined based on the rebar diameter, grade, concrete strength, and design requirements. The ACI 318 provides specific formulas and tables to calculate the required lap length. 2. Embedment Length: The embedment length refers to the portion of the rebar that is embedded within the concrete column. It is important to achieve adequate embedment to transfer the applied loads effectively. The embedment length is determined based on factors such as rebar diameter, grade, and the compressive strength of concrete. 3. Development Length: The development length is the minimum length of rebar required beyond the point of critical section to develop its full tensile or compressive strength. It ensures that the rebar can resist the applied loads and prevent premature failure. The ACI 318 provides formulas to calculate the development length based on rebar diameter, grade, concrete strength, and design requirements. 4. Concrete Cover: The concrete cover refers to the thickness of concrete between the external surface of the rebar and the outer surface of the column. It provides protection against corrosion, fire, and other environmental factors. The required concrete cover is determined by considering factors such as rebar diameter, grade, exposure conditions, and design requirements. The ACI 318 provides minimum cover requirements for different rebar sizes and exposure conditions. 5. Spacing and Positioning: The rebars should be properly spaced and positioned within the column to ensure uniform load distribution and effective reinforcement. The spacing is determined based on the column dimensions, rebar diameter, and design requirements. Additionally, the rebars should be properly aligned and centered within the column to provide the intended structural strength. 6. Mechanical Anchorage: In some cases, mechanical anchorage devices, such as rebar couplers or headed bars, are used to improve the anchoring of rebars in columns. These devices provide enhanced load transfer and prevent slippage between rebars. The selection and installation of mechanical anchorage should comply with the manufacturer's recommendations and relevant standards. 7. Quality Control and Inspection: It is crucial to implement proper quality control and inspection procedures during the installation of rebars in columns. This includes verifying the dimensions, lap lengths, embedment lengths, development lengths, concrete cover, spacing, and positioning of the rebars. Regular inspections and non-destructive testing techniques, such as ultrasonic or radiographic testing, can be employed to ensure compliance with the guidelines and detect any defects or deviations. It is important to note that these guidelines may vary depending on the specific design requirements, local building codes, and structural considerations. Therefore, it is recommended to consult the relevant standards and seek professional advice from structural engineers or experts to ensure proper anchorage of steel rebars in columns.

Q:How do steel rebars resist buckling in concrete structures?: Steel rebars resist buckling in concrete structures due to their high tensile strength and ability to distribute and transfer loads. When concrete is subjected to compressive forces, the rebars provide tensile strength to counteract these forces. The ribbed surface of rebars enhances their bond with the surrounding concrete, ensuring effective load transfer. This reinforcement prevents the concrete from buckling under compressive stress, thereby enhancing the overall stability and strength of the structure.

Q:Can steel rebars be used in foundation systems?: Yes, steel rebars can be used in foundation systems. Steel rebars are commonly used as reinforcement in concrete foundations to provide additional strength and stability. They help to distribute the load evenly and prevent cracking or failure of the foundation.

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