U-channels In Japanese Standard with High Quality

U-channels In Japanese Standard with High Quality System 1

U-channels In Japanese Standard with High Quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Product Description:

Minimum Order Quantity:	25MT	Unit:	m.t.	Loading Port:	Xingang Port
Supply Ability:	120000TON/Year	Payment Terms:	TT or LC

Product Applications:

Japanese Standard U-channels are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

Product Advantages:

OKorder's Japanese Standard U-channels are durable, strong, and resist corrosion.

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:

Manufacture: Hot rolled

Grade: Q195 – 235

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

1. We are definitely speciallizing in manufacturing and supplying channel steel as per japanese standard, which is characterised with high mechanical strength and competitive prices.

Original Place	Tangshan, China	Brand Name	UINDA
Standard	JIS G3192 : 1990
Material Grade	SS490
Sizes	50mm to 200mm
Sales Volume/Year	3000MT
Destination Area	Middle East, Africa, Southeast Asia

2. The sections in details are as followings in the table-1

JIS U CHANNEL	Standard h	Sectional b	Dimension s	t	Mass: Kg/m
	(mm)	(mm)	(mm)	(mm)
50x25	50	25	3.0	6.00	2.37
75X40	75	40	3.8	7.00	5.30
75X40	75	40	4.0	7.00	5.60
75X40	75	40	4.5	7.00	5.85
75X40	75	40	5.0	7.00	6.92

100X50	100	50	3.8	6.00	7.30
100X50	100	50	4.2	6.00	8.03
100X50	100	50	4.5	7.50	8.97
100X50	100	50	5.0	7.50	9.36

125X65	125	65	5.2	6.80	11.66
125X65	125	65	5.3	6.80	12.17
125X65	125	65	5.5	8.00	12.91
125X65	125	65	6.0	8.00	13.40

150x75	150	75	5.5	7.30	14.66
150x75	150	75	5.7	10.00	16.71
150x75	150	75	6.0	10.00	17.90
150x75	150	75	6.5	10.00	18.60
150x75	150	75	6.5	10.00	24.00

200X80	200	80	7.5	11.00	24.60

Table-1

3. The mechanical property of JIS U Channel Steel in the table-2:

Grade	Yield Strength，N/mm²				Extension Strength N/mm²
	Thickness of Steel,mm
	≦16	＞16-≦40	＞40-≦100	＞100
SS490	≧285	≧275	≧255	≧245	490-610

Table-2

4. The chemical composition of JIS U Channel Steel as per SS490 in the table-3

Grade	Element(%)
Grade	C	Mn	P	S
SS490	-	-	≦0.050	≦0.050

Table-3

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.

Q2: 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.

Q3: The products are invoicing on theoritical weight or on actual weight?

A3: We can do it in both manners, according to the customers' request.

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U-channels In Japanese Standard with High Quality

Q: How are steel rebars protected against lightning strikes?: The process of "bonding" shields steel rebars from lightning strikes. When constructing a building, steel rebars are linked to a lightning protection system to safely redirect the electrical energy of a lightning strike into the ground. This system typically comprises lightning rods or air terminals positioned at the highest points of the building to attract the lightning strike. Subsequently, the rebars are interconnected with conductor cables, creating a network that effectively grounds the lightning current. The conductor cables are fastened to the lightning rods and extend down the building, connecting with the rebars at various points. By bonding the rebars with the lightning protection system, the electrical charge from a lightning strike is efficiently conducted away from the building and harmlessly discharged into the ground. Moreover, additional precautions such as surge protection devices are frequently installed to further safeguard the rebars and the overall building from potential damage caused by voltage surges resulting from lightning strikes. These surge protection devices assist in minimizing the risk of electrical surges that could potentially compromise the integrity of the rebars. To conclude, steel rebars are shielded against lightning strikes by establishing a proper bond with a lightning protection system. This ensures that the electrical energy from a lightning strike is securely directed away from the building and grounded, thereby reducing the risk of damage to the rebars and the overall structural integrity.

Q: Why is the threaded steel thread?: Steel is usually used for reinforced concrete, its role is to increase the friction of thread, the thread steel and concrete secant integrally formed together, tic phenomenon can not occur in the role of external force, improve the strength of concrete.

Q: What are the advantages of using composite steel rebars?: There are several advantages to using composite steel rebars in construction projects. Firstly, composite steel rebars offer superior strength and durability compared to traditional rebars. The combination of steel and a fiber-reinforced polymer (FRP) composite material provides enhanced tensile strength, allowing for a more robust and resilient structure. This is particularly advantageous in areas with high seismic activity or extreme weather conditions, where the reinforcement needs to withstand significant forces. Secondly, composite steel rebars are highly corrosion-resistant. Steel rebars alone are prone to corrosion when exposed to moisture and chemicals, leading to structural degradation over time. The addition of a protective FRP composite layer effectively shields the steel from these corrosive elements, prolonging the lifespan of the reinforcement and reducing the need for frequent maintenance. Moreover, composite steel rebars offer a lightweight alternative to conventional steel reinforcement. The use of FRP composites significantly reduces the weight of the rebars while maintaining their structural integrity. This lightweight characteristic makes transportation and installation easier, reducing construction time and costs. Additionally, composite steel rebars provide excellent electrical and thermal insulation properties. Unlike traditional steel rebars, which are conductive, the FRP composite layer acts as an insulator, minimizing the risk of electrical hazards and preventing the transfer of heat. This is especially beneficial in structures where electrical or thermal conductivity needs to be controlled, such as in power plants or buildings with sensitive equipment. Lastly, composite steel rebars are environmentally friendly. The production of steel rebars typically requires a significant amount of energy and emits greenhouse gases. By utilizing FRP composites, the overall carbon footprint of the reinforcement is reduced, making it a more sustainable choice. In conclusion, the advantages of using composite steel rebars include enhanced strength, corrosion resistance, lightweight construction, electrical and thermal insulation, and environmental sustainability. These benefits make composite steel rebars a compelling choice for various construction applications.

Q: Can steel rebars be used in cold weather construction?: Yes, steel rebars can be used in cold weather construction. However, it is important to take certain precautions and considerations to ensure their performance and durability in low temperatures. This may include using low-temperature steel rebars, maintaining proper storage conditions, and implementing appropriate curing and insulation techniques.

Q: How are steel rebars different from steel mesh?: Steel rebars and steel mesh are both reinforcement materials used in construction, but they differ in their shape and application. Steel rebars are long, slender bars with a round or deformed surface, primarily used to reinforce concrete structures like beams, columns, and walls. They provide tensile strength and prevent cracking or failure in concrete elements. On the other hand, steel mesh consists of interconnected wires forming a grid-like pattern and is commonly used to reinforce concrete slabs, pavements, and foundations. Mesh provides uniform support and distributes loads evenly, enhancing the overall strength and durability of the concrete. So, while both serve the purpose of reinforcement, rebars are ideal for vertical structures, whereas mesh is more suitable for horizontal applications.

Q: What are the different types of steel rebars used in parking structures?: There are several different types of steel rebars commonly used in parking structures. These rebars are essential for reinforcing the concrete and providing structural integrity to the building. The specific type of rebar chosen for a parking structure depends on various factors such as the design requirements, load-bearing capacity, and environment in which the structure will be built. 1. Mild Steel Rebars: Mild steel rebars, also known as black rebars, are the most commonly used type of rebar in parking structures. These rebars have a carbon content of about 0.15% to 0.30%, making them highly ductile and easily weldable. They provide excellent tensile strength and are cost-effective, making them suitable for most parking structure applications. 2. High-Strength Rebars: High-strength rebars, also known as deformed rebars, are made from carbon steel and have additional alloying elements like manganese, silicon, and chromium to enhance their strength. These rebars have higher tensile strength compared to mild steel rebars, making them ideal for structures that require increased load-bearing capacity or have larger spans. High-strength rebars are commonly used in multi-level parking structures or areas with heavy traffic loads. 3. Epoxy-Coated Rebars: Epoxy-coated rebars are mild steel rebars coated with a protective layer of epoxy resin. This coating provides corrosion resistance and prevents the rebar from coming into direct contact with the concrete, reducing the risk of rust and subsequent structural damage. Epoxy-coated rebars are commonly used in parking structures located in coastal areas or regions with high humidity levels, where corrosion is a significant concern. 4. Stainless Steel Rebars: Stainless steel rebars are highly corrosion-resistant and are commonly used in parking structures where exposure to aggressive environments is anticipated, such as in parking garages near the sea or areas with high chloride content. These rebars are made from an alloy of steel and chromium, with additional elements like nickel and molybdenum, providing superior resistance to corrosion and ensuring long-term durability. It is worth noting that the selection of the appropriate type of rebar for a parking structure should be done in consultation with a structural engineer or construction professional. They will consider various factors, such as the specific project requirements, local building codes, and environmental conditions, to determine the most suitable type of rebar for the parking structure to ensure its longevity and safety.

Q: Can steel rebars be used in historical buildings restoration?: Yes, steel rebars can be used in historical buildings restoration. Steel rebars provide strength and structural integrity to the building, ensuring its stability and longevity. However, it is crucial to use rebars that are compatible with the historical building's materials and design to preserve its authenticity. Additionally, proper installation techniques and preservation methods should be employed to minimize any potential damage or alteration to the historical fabric of the building.

Q: Can steel rebars be used in offshore oil and gas platform construction?: Yes, steel rebars can be used in offshore oil and gas platform construction. They are commonly used to reinforce concrete structures in these platforms, providing strength and durability to withstand the harsh marine environment.

Q: What are the common surface patterns for steel rebars?: The common surface patterns for steel rebars include plain, deformed, and ribbed patterns. Plain rebars have a smooth surface without any patterns or indentations. They are commonly used in applications where the rebar needs to be easily bendable or welded, such as in reinforced concrete structures. Deformed rebars, on the other hand, have patterns or indentations on their surface. These patterns are typically in the form of ribs, humps, or indentations that provide enhanced bonding characteristics with the surrounding concrete. The deformations improve the grip between the rebar and concrete, ensuring better transfer of stresses and preventing slippage. Deformed rebars are widely used in construction projects, especially in areas where high tensile strength and bond strength are required. Ribbed rebars are a specific type of deformed rebar that have continuous longitudinal ribs along their length. These ribs are usually evenly spaced and provide additional anchorage and bond strength with the concrete. Ribbed rebars are commonly used in applications where a higher level of bond strength is required, such as in seismic zones or in structures subjected to heavy loads. Overall, the choice of surface pattern for steel rebars depends on the specific requirements of the construction project and the desired performance characteristics.

Q: How are steel rebars installed in concrete structures?: Steel rebars are installed in concrete structures by first determining the required placement and spacing of the rebars. The rebars are then cut to the desired length and placed in the formwork before pouring the concrete. The rebars are secured in place using wire ties or metal supports to prevent displacement during the concrete placement. Once the concrete has cured, the rebars become an integral part of the structure, providing reinforcement and strength.

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