Steel Rebar, Deformed Steel Bar, Iron Rods for Construction or Concrete

Steel Rebar, Deformed Steel Bar, Iron Rods for Construction or Concrete System 1

Steel Rebar, Deformed Steel Bar, Iron Rods for Construction or Concrete

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 24 m.t.

Supply Capability:: 23000 m.t./month

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Specifications

Certificates: CE & ISO9001:2000
Material: hrhrb400 ,hrb500, BS4449, ASTM A615, SD400
length:6-12
Size: 6mm-40mm

HRB 400E Hot rolled steel rebar

Type	steel rebar
Standard Grade	a. GB1499.2-2007, HRB335, HRB400E, etc.
	b. ASTM A615 Gr.40, Gr.60, etc.
	c. BS4449/1997, etc.
Diameter	6mm-32mm etc.
Length	6m, 8m, 9m,12m as standard
Application	construction industry with all types of reinforced concrete structures and so on
Packing	standard export packing, or as per customers' requirement
Quality	First quality
Delivery time	Right now after the deposit.
Others	1. all the production process are made under the ISO 9001:2001 strictly
	2. our products conform to all the standards
	3. we can offer special specification products as per our customers

We are willing to establish long business relations with customers all over the world. Any comments and requirement will be appreciated. It is our big pleasure of serving you.

If you are interested in our products, please contact us for more information we can supply you with competitive price and good service.

Steel Rebar, Deformed Steel Bar, Iron Rods for Construction or Concrete

Q: What is the difference between the II and III grades of threaded steel?: The difference between three grade steel and two grade steel can be divided into the following aspects:1, different grades of steel (chemical composition is different). HRB335 grade steel is 20MnSi (20 manganese silicon); HRB400 grade steel bars are 20MnSiV or 20MnSiNb or 20MnTi etc.;2, strength is different, HRB335 grade steel tensile and compressive design strength is 300MPa, HRB400 grade steel tensile and compressive design strength is 360MPa.3, because of the chemical composition of steel and the ultimate strength of different, so in toughness, cold bending, fatigue and other properties are also different.

Q: What are the different types of steel rebars used in tunnel constructions?: In tunnel constructions, various types of steel rebars are used to enhance the structural integrity and strength of the tunnels. These rebars are crucial components that provide reinforcement and stability to the tunnel structures. Here are some of the different types of steel rebars commonly used in tunnel constructions: 1. Mild Steel Rebars: Mild steel rebars, also known as black or carbon steel rebars, are the most commonly used type of rebars in tunnel constructions. They are cost-effective and possess adequate strength to meet the structural requirements of tunnels. 2. High-Strength Steel Rebars: High-strength steel rebars, also referred to as tension steel, have enhanced tensile strength, making them ideal for tunnel constructions where high load-bearing capabilities are required. These rebars are typically made from alloys such as ASTM A615 Grade 80 or ASTM A706 Grade 80. 3. Stainless Steel Rebars: Stainless steel rebars are corrosion-resistant and offer excellent durability in harsh tunnel environments. They are commonly used in tunnel constructions where corrosion protection is essential, such as in marine or coastal areas. 4. Epoxy-Coated Rebars: Epoxy-coated rebars are regular mild steel rebars with an epoxy coating applied to protect them from corrosion. They are commonly used in tunnel constructions where the tunnels are exposed to moisture, chemicals, or other corrosive elements. 5. Galvanized Rebars: Galvanized rebars are coated with a layer of zinc to protect them from corrosion. They are commonly used in tunnel constructions where the tunnels are exposed to moisture or in areas with high humidity levels. 6. Fiberglass Rebars: Fiberglass rebars, also known as GFRP (Glass Fiber Reinforced Polymer) rebars, are non-corrosive and lightweight. They are used in tunnel constructions where weight reduction is a critical factor or in areas with high electromagnetic interference. 7. Carbon Fiber Rebars: Carbon fiber rebars, also known as CFRP (Carbon Fiber Reinforced Polymer) rebars, possess high tensile strength and are corrosion-resistant. They are commonly used in tunnel constructions where high tensile strength and resistance to chemical or environmental degradation are required. The selection of the appropriate type of steel rebar for tunnel constructions depends on various factors such as load-bearing requirements, exposure to corrosion, environmental conditions, and project budget. Consulting with structural engineers or construction experts is advised to ensure the optimal choice of steel rebars for tunnel projects.

Q: Can steel rebars be used in foundation structures?: Yes, steel rebars can be used in foundation structures. Steel rebars are commonly used in reinforced concrete foundations to provide strength and structural integrity. They are used to reinforce the concrete and enhance its load-bearing capacity, making it suitable for supporting heavy structures and resisting forces like earthquakes and soil movement.

Q: How do steel rebars affect the overall construction timeline?: Steel rebars can significantly impact the overall construction timeline. Their presence ensures the structural integrity and strength of concrete structures, such as buildings and bridges. However, the installation, positioning, and securing of rebars can be time-consuming and require meticulous planning and coordination. Any delays or errors in rebar installation can potentially slow down the construction process, impacting the timeline. Therefore, it is crucial to efficiently manage the procurement, fabrication, and installation of rebars to keep the construction timeline on track.

Q: Can steel rebars be used in the construction of underground parking structures?: Yes, steel rebars can be used in the construction of underground parking structures. Steel rebars are commonly used in reinforced concrete structures, including underground parking structures, to provide tensile strength and reinforcement. The rebars are typically placed strategically within the concrete to enhance its load-bearing capacity, durability, and resistance to cracking or deformation. Due to their high strength and ability to withstand heavy loads, steel rebars are well-suited for underground parking structures that require robust structural support. Additionally, the corrosion resistance of steel rebars can be further enhanced by applying protective coatings or using stainless steel rebars, which is particularly important in underground environments where moisture and exposure to chemicals may be present. Overall, the use of steel rebars is a standard practice in the construction of underground parking structures to ensure the structural integrity and longevity of the facility.

Q: What are the different types of coating for steel rebars?: There are several different types of coatings that can be applied to steel rebars, including epoxy, zinc, and galvanized coatings. Epoxy coatings provide a protective barrier against corrosion and can be applied as a liquid or powder. Zinc coatings, such as hot-dip galvanizing, involve immersing the steel rebar in molten zinc, forming a durable protective layer. Galvanized coatings involve a similar process but typically use a thinner layer of zinc. These coatings help to extend the lifespan of the steel rebar and prevent corrosion.

Q: How long do steel rebars last in a concrete structure?: Steel rebars can last for several decades in a concrete structure, typically up to 50-100 years or even longer, depending on various factors such as the quality of steel used, environmental conditions, maintenance practices, and exposure to corrosive elements.

Q: Can steel rebars be used in structures with high resistance to earthquakes?: Structures with high resistance to earthquakes can make use of steel rebars. These rebars are commonly incorporated in reinforced concrete structures to enhance strength and durability. In areas prone to earthquakes, it is crucial to design and construct buildings capable of withstanding seismic forces. Properly incorporating steel rebars into the structural design can contribute to improving the overall seismic performance of a building. In earthquake-resistant structures, steel rebars offer several advantages. Firstly, they increase the tensile strength of concrete, which is typically weak in tension. This reinforcement helps prevent cracking and failure of the concrete during seismic events. Additionally, steel rebars improve the ductility of the structure, allowing it to absorb and dissipate energy during earthquakes. This ductile behavior helps minimize structural damage and ensures the building remains stable and safe. Moreover, steel rebars can be combined with other seismic design techniques to enhance the overall performance of the structure. For instance, they can be used in conjunction with specialized concrete mixes like high-strength or fiber-reinforced concrete to further improve seismic resistance. Advanced structural systems such as moment frames or shear walls can also be integrated with steel rebars to provide even greater earthquake resistance. However, it is important to note that the earthquake resistance of a structure does not solely depend on the use of steel rebars. Proper design, construction techniques, and adherence to seismic building codes are equally crucial factors. Engineers must consider various aspects, including the building's location, soil conditions, and anticipated seismic loads, to ensure the structural integrity and safety of the building. In conclusion, steel rebars can effectively enhance the earthquake resistance of structures. By incorporating them into reinforced concrete structures, the tensile strength and ductility are improved, enabling the building to withstand seismic forces. Nevertheless, it is essential to implement comprehensive seismic design strategies and adhere to building codes to ensure the overall safety and performance of the structure.

Q: What is the weight of a typical steel rebar?: The weight of a typical steel rebar can vary depending on its size and length. However, a commonly used size is a #4 rebar, which has a diameter of 1/2 inch. A #4 rebar typically weighs around 0.67 pounds per foot or 9.5 pounds per 14-foot length. It is important to note that different sizes of steel rebar will have different weights, so it is crucial to consider the specific size and length when determining the weight.

Q: What are the common factors that can cause premature failure of steel rebars?: There are several common factors that can cause premature failure of steel rebars. These include corrosion, improper installation, inadequate concrete cover, poor quality control during manufacturing, exposure to extreme temperatures, high levels of stress or loading, and environmental factors such as chemicals or moisture.

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