JIS Standard U-channels with best quality

JIS Standard U-channels with best quality System 1

JIS Standard U-channels with best quality

Ref Price:

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:

JIS 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 JIS 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 by OKorder.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: What makes stainless steel stainless?

A2: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

Q3: Can stainless steel rust?

A3: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.

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JIS Standard U-channels with best quality

Q:What is the role of steel rebars in the construction of railway bridges?: Steel rebars play a crucial role in the construction of railway bridges by providing reinforcement and strength to the concrete structure. They help to distribute the load evenly across the bridge, ensuring its stability and durability, especially when subjected to heavy train traffic and varying weather conditions. Rebars also help to prevent cracks and structural failures, making them an essential component in ensuring the safety and longevity of railway bridges.

Q:Can steel rebars be recycled after the demolition of a structure?: Yes, steel rebars can be recycled after the demolition of a structure. Steel is a highly recyclable material and rebars are commonly collected and reused in the steel industry for the production of new steel products. Recycling steel rebars helps conserve natural resources and reduces the environmental impact of construction projects.

Q:Are there any specific safety precautions to be taken while handling steel rebars?: There are several safety measures that need to be taken into account when handling steel rebars. Here are some important factors to consider: 1. Personal Protective Equipment (PPE) is essential. It is crucial to wear the appropriate gear, including safety goggles or glasses, gloves, and steel-toed boots. These items will help safeguard against potential eye injuries, cuts, and crushed toes. 2. Proper lifting techniques must be employed when handling rebars. This involves bending at the knees, maintaining a straight back, and utilizing leg muscles to lift the load. Twisting or jerking movements should be avoided to prevent strains or sprains. 3. Rebars should be stored in an organized and secure manner. They should not be leaned against walls or other structures to avoid falling and causing harm. 4. The sharp edges of rebars should be handled with caution. Careful handling is necessary to prevent cuts or punctures. Wearing protective gloves is recommended to minimize the risk of hand injuries. 5. When transporting rebars, it is crucial to ensure they are secured properly. This prevents movement or falling off the vehicle. Appropriate restraints such as ropes or straps should be used to secure the load safely. 6. It is important to be mindful of any overhead power lines or live electrical sources in the working area. Maintaining a safe distance from these sources prevents accidental contact with the rebars, which can conduct electricity. 7. Communication and awareness among workers are key. Constantly communicating with others in the vicinity ensures that everyone is aware of the presence of rebars. This helps prevent accidental injuries caused by tripping or colliding with the rebars. By adhering to these safety precautions, the risk of accidents or injuries while handling steel rebars can be minimized. It is also important to undergo proper training and comply with any specific safety guidelines provided by your employer or industry regulations.

Q:How do steel rebars affect the overall cost-effectiveness of a structure?: The overall cost-effectiveness of a structure is greatly improved by the presence of steel rebars. These reinforcement bars are extensively used in construction projects to provide concrete structures with strength, durability, and stability. By incorporating steel rebars, the lifespan of a structure is significantly extended, resulting in reduced requirements for frequent repairs and maintenance, ultimately lowering long-term expenses. One of the main advantages of using steel rebars is their ability to reinforce concrete, enabling it to withstand heavy loads and forces. This reinforcement prevents cracks and structural failures, ensuring the long-lasting nature of the structure. Consequently, the need for expensive repairs and replacements is minimized, resulting in cost savings over the structure's lifetime. Furthermore, steel rebars enhance the overall structural integrity of a building, reducing the risk of damage caused by natural disasters such as earthquakes and high winds. This increased resilience not only saves lives but also reduces the financial burden of rebuilding or repairing a damaged structure. In addition to their strength and durability, steel rebars provide cost-effectiveness during the construction phase itself. These bars can be prefabricated off-site, allowing for efficient and streamlined construction processes. This reduces labor costs, accelerates construction timelines, and minimizes material wastage, leading to overall cost savings. Moreover, steel rebars can be recycled, making them an environmentally friendly choice. The recycling process not only reduces the demand for raw materials but also lowers production costs, contributing to the cost-effectiveness of a structure. In conclusion, steel rebars enhance the cost-effectiveness of a structure by increasing its lifespan, reducing maintenance and repair costs, improving resilience to natural disasters, optimizing construction processes, and promoting environmental sustainability. By incorporating steel rebars into construction projects, developers and owners can maximize the return on investment while ensuring the safety and longevity of the structure.

Q:12 of the threaded steel can replace 16 of the screw steel? But the same proportion. Thanks: Now Tianjin Tiantai into 12 of the price is 3900 yuan a ton, 16 tons of steel a price is 3850 yuan. 12 of thread steel is 50 yuan more expensive than 16 thread steel.

Q:How do steel rebars prevent concrete structures from cracking under load?: Steel rebars, or reinforcing bars, are essential components in concrete structures as they play a crucial role in preventing cracking under load. There are several ways in which rebars contribute to the structural integrity and durability of concrete: 1. Reinforcement: Steel rebars provide additional strength to the concrete by acting as tension members. Concrete is strong in compression but relatively weak in tension. When a load is applied to a concrete structure, rebars absorb the tensile forces and distribute them throughout the structure, reducing the risk of cracking. 2. Load transfer: By embedding rebars within the concrete, they help in transferring the loads from one section to another. This load transfer mechanism ensures that the stresses are distributed evenly, preventing concentrated stress points that could lead to cracking. 3. Bonding: The surface texture and ridges on the rebar enhance its bond with the concrete. This bond is critical as it allows the rebar to effectively transfer stress between the concrete and the steel. The interlocking action between the two materials ensures that the concrete and the rebars work together, increasing the overall strength and load-bearing capacity of the structure. 4. Expansion and contraction control: Concrete structures are subjected to temperature variations, which can cause them to expand or contract. Steel rebars help control these movements by providing stability and limiting the extent of cracking. The rebars absorb and accommodate the expansion and contraction, reducing the risk of extensive cracking and maintaining the structural integrity. 5. Flexibility: Steel rebars possess a high degree of flexibility, which allows them to absorb dynamic loads and stresses. This flexibility ensures that the rebars can withstand external forces without fracturing or causing damage to the concrete. By absorbing and distributing these loads, rebars prevent cracks from forming and propagate through the structure. In summary, steel rebars prevent concrete structures from cracking under load by reinforcing the concrete, transferring loads, enhancing bonding between concrete and steel, controlling expansion and contraction, and providing flexibility to absorb dynamic forces. Their presence in concrete structures significantly improves their strength, durability, and resistance to cracking under various loading conditions.

Q:How do steel rebars affect the overall fire safety of concrete structures?: Steel rebars can have both positive and negative effects on the fire safety of concrete structures. On one hand, steel rebars help to enhance the structural integrity of concrete by providing reinforcement and preventing collapse during a fire. However, steel has a high thermal conductivity, which means it can transfer heat quickly, potentially accelerating fire spread and compromising the stability of the structure. To mitigate these risks, additional fire protection measures, such as fire-resistant coatings or enclosures, should be implemented to enhance the overall fire safety of concrete structures with steel rebars.

Q:How do steel rebars provide reinforcement to concrete?: Concrete is reinforced by steel rebars, which act as tension members. When loads are applied to the concrete, such as the weight of a structure or external forces, it tends to crack and fail under tension. To counteract this weakness, steel rebars are embedded within the concrete. Made of high-strength steel, the rebars have a much higher tensile strength than concrete. During the pouring of concrete, the rebars are strategically placed throughout the structure, typically in areas where tension forces are expected. These areas include beams, columns, and slabs. As the concrete cures and hardens, it forms a strong bond with the steel rebars. When external forces are exerted on the concrete, like the weight of a building or lateral forces from wind or earthquakes, tension forces are generated within the concrete. However, instead of causing the concrete to crack and fail, the rebars bear the majority of the tension. Due to the high tensile strength of the steel rebars, they can resist the tension forces, preventing the formation of cracks and ensuring the integrity and structure of the concrete. The rebars act as reinforcement by evenly distributing the tensile forces throughout the concrete, enhancing its overall strength and durability. Moreover, rebars offer additional benefits to concrete structures. They can mitigate the effects of temperature changes, prevent shrinkage cracks, and enhance resistance to corrosion caused by environmental factors. In conclusion, the use of steel rebars significantly improves the structural integrity and lifespan of concrete, enabling it to withstand various loads and external forces over time.

Q:Are there any environmental concerns related to steel rebars?: Yes, there are some environmental concerns related to steel rebars. The production of steel rebars involves the extraction of iron ore, which can lead to habitat destruction and deforestation. The manufacturing process also requires a significant amount of energy, contributing to greenhouse gas emissions. Additionally, steel rebars are typically coated with epoxy or other materials that contain harmful chemicals, posing risks to both human health and the environment during their production and use. Proper disposal and recycling of steel rebars are also important to minimize their environmental impact.

Q:Can steel rebars be used in underground structures?: Yes, steel rebars can be used in underground structures. They provide strength and reinforcement to the concrete, making it capable of withstanding the pressure and load of the underground environment. Additionally, steel rebars have excellent resistance to corrosion, which is crucial in underground structures where moisture and other environmental factors may accelerate deterioration.

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