Deformed steel bar HPB400;HPB500 System 1

Deformed steel bar HPB400;HPB500

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1000 m.t.

Supply Capability:: 10000 m.t./month

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Product Description:

Specifications of Deformed Steel Bar:

Standard	GB	HRB335, HRB400, HRB500
	UK	G460B, B500A, B500B,B500C
	USA	GR40, GR60
Diameter	6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm, 22mm,25mm,28mm,32mm,36mm,40mm,50mm
Diameter
Length	6M, 9M,12M or as required
Place of origin	Hebei, China mainland
Application	building,construction,road,bridge etc
Brand name	DRAGON

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

Diameter(mm)	Section area (mm²)	Mass(kg/m)
6	28.27	0.222
8	50.27	0.395
10	78.54	0.617
12	113.1	0.888
14	153.9	1.21
16	201.1	1.58
18	254.5	2.00
20	314.2	2.47
22	380.1	2.98
25	490.9	3.85
28	615.8	4.83
32	804.2	6.31
36	1018	7.99
40	1257	9.87
50	1964	15.42

Usage and Applications of 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 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:How do steel rebars affect the overall corrosion resistance of marine structures?: The overall corrosion resistance of marine structures is significantly affected by steel rebars. Depending on various factors, the presence of steel rebars in concrete marine structures can either enhance or deteriorate their resistance to corrosion. To begin with, when appropriate preventive measures are taken, steel rebars can enhance corrosion resistance. For example, if the rebars are adequately coated with anti-corrosion materials like epoxy or zinc, they can provide an additional layer of protection against the corrosive effects of seawater. Moreover, ensuring proper concrete cover and compaction during construction can help prevent seawater from penetrating the rebars, reducing the risk of corrosion. Conversely, if steel rebars are not properly coated or if the concrete cover is insufficient, they can contribute to the degradation of marine structures. When exposed to the aggressive marine environment, rebars can corrode, leading to rust formation. Rust occupies more space than steel, causing expansion that exerts pressure on the surrounding concrete. This pressure can result in concrete cracking and spalling, further exposing the rebars to corrosion and compromising the overall structural integrity of the marine structure. Regular maintenance and inspection are crucial to mitigate the negative effects of steel rebars on corrosion resistance. Periodic inspections can help identify any signs of corrosion, enabling timely repairs or replacement of rebars. Additionally, implementing cathodic protection systems can provide an electrochemical countermeasure against corrosion, ensuring the longevity and durability of the marine structure. In conclusion, steel rebars play a vital role in the corrosion resistance of marine structures. Proper coating, concrete cover, and maintenance measures are essential to ensure the positive contribution of rebars to corrosion resistance. Neglecting these factors can lead to the degradation of marine structures.

Q:How are steel rebars measured and priced in the market?: Steel rebars are typically measured and priced in the market based on their diameter and length. The diameter of the rebars is measured in millimeters, and the length is usually in meters. The pricing is determined by factors such as the current market demand, the cost of raw materials, and any additional processing or customization. Additionally, the pricing may also vary depending on the grade or quality of the steel rebars, with higher-grade rebars generally commanding a higher price.

Q:What is the effect of vibration on steel rebars?: Vibration can have both positive and negative effects on steel rebars. On one hand, controlled vibration during the pouring and placement of concrete can help to remove air bubbles and ensure better bonding between the rebar and concrete, enhancing the overall structural integrity. On the other hand, excessive or prolonged vibration can lead to fatigue and weakening of the rebars, potentially compromising their strength and durability over time. Therefore, it is essential to carefully regulate and monitor vibration to maintain the optimal balance for the performance and longevity of steel rebars.

Q:How do steel rebars contribute to the overall seismic performance of a building?: Steel rebars contribute to the overall seismic performance of a building by providing strength, ductility, and flexibility. They enhance the structural integrity of the building, resisting the forces generated during an earthquake. The rebars are embedded in the concrete, reinforcing it and improving its tensile strength. This reinforcement helps in distributing the seismic forces more evenly throughout the structure, reducing the chances of collapse or significant damage. Additionally, the ductility of steel rebars allows them to elongate and deform under stress, absorbing and dissipating energy from seismic waves, thus protecting the building and its occupants.

Q:How do steel rebars affect the constructability of a project?: Steel rebars play a crucial role in enhancing the constructability of a project in several ways. Firstly, they provide structural strength and stability to reinforced concrete structures. By reinforcing the concrete, rebars help to distribute the load more evenly, increasing the overall strength and durability of the project. Secondly, steel rebars allow for the construction of larger and taller structures. They provide the necessary tensile strength to counteract the concrete's weakness in resisting tension forces. This enables engineers and architects to design and build structures with greater flexibility, leading to more innovative and impressive architectural designs. Moreover, steel rebars help to ensure the integrity and safety of a project. They act as a reinforcement against external forces such as earthquakes, wind loads, and impacts. By resisting these forces, they enhance the structural stability, reducing the risk of collapse or damage during extreme conditions. Steel rebars also contribute to the longevity and maintenance of the project. Due to their high tensile strength and resistance to corrosion, they help extend the lifespan of the structure. This reduces the need for frequent repairs and replacements, resulting in cost savings and less disruption to the project. Furthermore, the use of steel rebars simplifies the construction process. They can be easily cut, bent, and shaped to fit the required specifications, making them highly adaptable to various project requirements. This flexibility allows for efficient construction, reducing the time and effort required for implementation. Overall, steel rebars significantly impact the constructability of a project by providing strength, stability, flexibility, safety, longevity, and simplification. Their use enables the construction of robust and aesthetically pleasing structures, ensuring the success and sustainability of the project.

Q:How are steel rebars classified based on their shape?: There are several types of steel rebars that are classified according to their shape. The most commonly used ones include plain round bars, deformed bars, square bars, and ribbed bars. Plain round bars are the simplest and most frequently utilized type. They have a smooth and round surface without any deformations or ribs. These bars are typically employed in cases where minimal reinforcement is needed for the concrete structure. Deformed bars, on the other hand, have ribs or deformations along their length. These ribs enhance the bond between the steel and the concrete, thereby improving structural integrity and preventing slippage. Deformed bars can be further classified based on the pattern and profile of the ribs, such as deformed high yield bars, twisted bars, and TMT (Thermo-Mechanically Treated) bars. Square bars, as their name suggests, have a square cross-section. They are mainly used in situations where additional strength and rigidity are required. Square rebars distribute loads better and are commonly utilized in building foundations, columns, and beams. Ribbed bars, also known as deformed square bars, have a square cross-section with ribs or deformations along their length. These ribs enhance the bond between the steel and the concrete, thereby providing better resistance against shear forces and improving overall structural strength. Ribbed bars are frequently used in reinforced concrete structures, such as bridges, highways, and buildings. To summarize, steel rebars are classified based on their shape into plain round bars, deformed bars, square bars, and ribbed bars. Each type of rebar offers distinct characteristics and is chosen based on the specific requirements and load-bearing capacity of the concrete structure.

Q:Why can't grounding steel be used?: When the thread steel is grounded, the contact with the soil is not dense, and the grounding resistance value is increased

Q:How do steel rebars comply with building codes and regulations?: Steel rebars comply with building codes and regulations by meeting specific requirements outlined in these codes. These requirements include the dimensions, strength, and quality of the rebars, as well as their placement and spacing within the concrete structures. Compliance is ensured through rigorous testing and certification processes, ensuring that the rebars meet the necessary standards for safety and structural integrity in construction projects.

Q:What is the maximum length of a steel rebar available in the market?: The maximum length of a steel rebar available in the market can vary, but it typically ranges from 60 to 80 feet.

Q:What are the different types of coatings available for protecting steel rebars?: There are several types of coatings available for protecting steel rebars, including epoxy coatings, zinc coatings (galvanization), polyethylene encasement, and fusion-bonded epoxy coatings. These coatings are applied to steel rebars to prevent corrosion, enhance durability, and extend the lifespan of the rebars in various applications such as construction, infrastructure, and reinforcement in concrete structures.

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