Deformed Steel Bar BS4449 GR.460B GR.B500B
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 1000 m.t./month
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Specifications
Steel rebar
Price: FOB $475-535/MT
Size:6-50mm
Moq: 300tons of each size
Material: BS4449 GR460, ASTM A615, HRB400, HRB500
Steel rebar/deformed steel bar/reinforced steel bar
1.Standard: ASTM,BS,DIN,JIS,BS 4449 GR460B-1997. ASTM A615/706 GR 40/60, GB(HRB400,500)
2.Grade:HRB35, HRB400, HRB500,
3.Diameter:6-50mm
4.Length:6-12m and in coils
5.Place of Origin: Tangshan, China (Mainland)
6.Brand Name: CNBM
7.Material: cabon steel
8.Color: black
9.Packing: bundles or as per the buyers' requirement.
10. Minimum Order Quantity: 500 MTS as per size.
11. Payment terms: TT or LC at sight.
12. Delivery time: within 25-30 days after down payment or L/C received.
13. Application: Construction,Bridge Building, Road Building
- Q: What are the different types of steel rebars used in marine constructions?
- The different types of steel rebars commonly used in marine constructions include stainless steel rebars, epoxy-coated rebars, and galvanized rebars. These types of rebars are chosen for their corrosion resistance properties, which are essential in withstanding the harsh marine environment. Stainless steel rebars are highly resistant to corrosion and are often used in marine structures due to their durability. Epoxy-coated rebars have a protective coating that prevents corrosion, making them suitable for marine applications. Galvanized rebars are coated with a layer of zinc, providing excellent corrosion protection and are commonly used in marine construction projects.
- Q: How do steel rebars affect the fire resistance of concrete structures?
- Concrete structures can greatly increase their ability to withstand fire by incorporating steel rebars. These rebars serve as reinforcement, providing extra strength and stability to the structure and enabling the concrete to endure the intense heat of a fire. The fire resistance of concrete structures primarily relies on the fact that concrete has low thermal conductivity. When exposed to high temperatures, concrete undergoes spalling, where the outer layer breaks off due to the rapid expansion of trapped water. However, the presence of steel rebars helps prevent spalling by holding the concrete together and preventing it from disintegrating. Moreover, steel rebars have a higher melting point than concrete. This means that even when exposed to extreme heat, the rebars maintain their strength and integrity. Consequently, the overall structural stability of the concrete structure remains intact, even in the presence of fire. Steel rebars also act as a heat sink, absorbing and dissipating heat away from the surrounding concrete. This dissipation of heat prevents the formation and spread of localized hotspots throughout the structure, thereby reducing the risk of structural failure. To further enhance the fire resistance of concrete structures, specialized types of steel rebars, known as fire-resistant or fire-rated rebars, can be utilized. These rebars are specifically designed to withstand high temperatures for extended periods without losing their strength. They are often coated with materials such as epoxy or intumescent coatings, which offer additional protection against fire. In conclusion, steel rebars play a vital role in improving the fire resistance of concrete structures. Their presence enhances the overall structural stability, minimizes spalling, dissipates heat, and provides additional strength to withstand the intense heat generated during a fire.
- Q: What is the recommended spacing between horizontal steel rebars in beams?
- The recommended spacing between horizontal steel rebars in beams typically depends on various factors such as the design requirements, load conditions, and the size of the beam. Generally, the spacing between rebars in beams ranges from 2 to 6 inches. However, it is crucial to consult with a structural engineer or refer to the applicable building codes and standards to determine the specific recommended spacing for a particular beam design.
- Q: What is the difference between steel rebars and FRP rebars?
- Steel rebars are traditional reinforcement bars made of steel, while FRP rebars are reinforced polymer bars. The main difference lies in their composition and properties. Steel rebars are strong and durable, but they are prone to corrosion, requiring regular maintenance. On the other hand, FRP rebars are corrosion-resistant, lightweight, and possess high tensile strength. They also offer better thermal and electrical insulation. However, FRP rebars are relatively new in the construction industry and may be more expensive compared to steel rebars.
- Q: Can steel rebars be used in tunnel lining construction?
- Tunnel lining construction readily employs steel rebars, given their exceptional tensile strength and durability. These rebars are extensively utilized as they furnish structural reinforcement to the concrete lining, assuring its stability and long-term performance. Typically, the rebars are embedded within the concrete lining, creating a robust composite structure that effectively withstands the various loads and pressures encountered in tunnel environments. Moreover, steel rebars can be easily molded and flexed to conform to the tunnel's shape, facilitating efficient and precise construction. Overall, steel rebars represent an indispensable element in tunnel lining construction, guaranteeing the essential strength and structural integrity that safeguard the safety and longevity of the tunnels.
- Q: What is the average lifespan of a reinforced concrete structure with steel rebars?
- The average lifespan of a reinforced concrete structure with steel rebars can vary depending on various factors such as design, construction quality, environmental exposure, and maintenance. However, with proper design, construction practices, and regular maintenance, reinforced concrete structures with steel rebars can typically last for several decades or even over a century.
- Q: How do steel rebars affect the thermal properties of a structure?
- Steel rebars can increase the thermal conductivity of a structure, making it more prone to heat transfer.
- Q: What are the common challenges faced during the installation of steel rebars?
- Some common challenges faced during the installation of steel rebars include ensuring proper alignment and spacing, dealing with complex reinforcement designs, ensuring proper placement and anchoring, managing the weight and handling of the rebars, and addressing any site-specific obstacles or restrictions.
- 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 different grades of steel rebars?
- The different grades of steel rebars include Grade 40, Grade 60, and Grade 75.
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Deformed Steel Bar BS4449 GR.460B GR.B500B
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 1000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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