ANGLE STEEL 80-250MM

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: -

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Angle Steel Details:

Minimum Order Quantity:	25mtons	Unit:	m.t.	Loading Port:	China Main Port
Supply Ability:	80000-100000MTS/YEAR	Payment Terms:	TT or LC

Product Description:

Specifications of Angle Steel

1. Invoicing on theoretical weight or actual weight as customer request

2. Length: 6m, 9m, 12m as following table

3. Sizes

Angle Steel

Sizes: 25mm-250mm
a*t
25*2.5-4.0	70*6.0-9.0	130*9.0-15
30*2.5-6.6	75*6.0-9.0	140*10-14
36*3.0-5.0	80*5.0-10	150*10-20
38*2.3-6.0	90*7.0-10	160*10-16
40*3.0-5.0	100*6.0-12	175*12-15
45*4.0-6.0	110*8.0-10	180*12-18
50*4.0-6.0	120*6.0-15	200*14-25
60*4.0-8.0	125*8.0-14	250*25

5. Payment terms:

1).100% irrevocable L/C at sight.

2).30% T/T prepaid and the balance against the copy of B/L.

3).30% T/T prepaid and the balance against L/C

6.Material details:

Alloy No	Grade	Element (%)
		C	Mn	S	P	Si
		C	Mn	S	P	Si

Q235	B	0.12—0.20	0.3—0.7	≤0.045	≤0.045	≤0.3

Alloy No	Grade	Yielding strength point( Mpa)
		Thickness (mm)
		≤16	＞16--40		＞40--60	＞60--100
		≥

Q235	B	235		225	215	205
Alloy No	Grade	Tensile strength (Mpa)	Elongation after fracture (%)
		Tensile strength (Mpa)	Thickness (mm)
			≤16	＞16--40	＞40--60	＞60--100
			≥

Q235	B	375--500	26	25	24	23

Usage & Applications of Angle Steel

According to the needs of different structures, Angle can compose to different force support component, and also can be the connections between components. It is widely used in various building structures and engineering structures such as roof beams, bridges, transmission towers, hoisting machinery and transport machinery, ships, industrial furnaces, reaction tower, container frame and warehouse etc.

Packaging & Delivery of Angle Steel

1. Packing: it is nude packed in bundles by steel wire rod

2. Bundle weight: not more than 3.5MT for bulk vessel; less than 3 MT for container load

3. Marks:

Color marking: There will be color marking on both end of the bundle for the cargo delivered by bulk vessel. That makes it easily to distinguish at the destination port.

Tag mark: there will be tag mark tied up on the bundles. The information usually including supplier logo and name, product name, made in China, shipping marks and other information request by the customer.

If loading by container the marking is not needed, but we will prepare it as customer request.

Production flow of Angle Steel

Material prepare (billet) —heat up—rough rolling—precision rolling—cooling—packing—storage and transportation

Q: How do steel rebars affect the overall crack control of concrete?: The incorporation of steel rebars into concrete structures is crucial for crack control. Steel rebars significantly improve the otherwise low tensile strength of concrete. Tensile forces, such as drying shrinkage, temperature changes, or applied loads, tend to cause cracks in concrete. However, the presence of steel rebars helps mitigate and control these cracks. Rebars reinforce the concrete and provide additional strength. They resist tensile forces and prevent easy cracking of the concrete. When reinforced concrete is subjected to tensile forces, the rebars bear a significant portion of the load, reducing the stress on the concrete and minimizing crack formation. The bond between the steel rebars and the concrete is essential for crack control. This bond ensures effective transfer of tensile forces to the concrete, enhancing its overall crack resistance. Additionally, the bond helps distribute applied loads evenly, reducing the risk of localized cracking. Steel rebars also have the ability to control crack widths in concrete. By specifying the appropriate diameter, spacing, and arrangement of the rebars, engineers can influence crack widths to meet design requirements. The rebars act as barriers, limiting the width of cracks and maintaining the structural integrity of the concrete. In conclusion, steel rebars have a positive impact on crack control in concrete. They enhance the tensile strength, resist tensile forces, distribute loads, and limit crack widths. Incorporating steel rebars in concrete ensures durability and longevity of structures by effectively controlling crack formation and minimizing their negative consequences.

Q: What are the guidelines for the proper lap splicing of steel rebars?: The guidelines for the proper lap splicing of steel rebars are as follows: 1. Lap Length: The lap length refers to the minimum distance required for the overlapping of rebars. It is determined based on factors such as bar diameter, strength, and the type of structure. Generally, lap lengths are specified by engineering codes and standards. 2. Cleanliness: Before proceeding with lap splicing, it is essential to ensure that the rebars are free from any dirt, rust, oil, or other contaminants. Any foreign material on the rebar surface can hinder the bond between the overlapping bars. 3. Alignment: The rebars to be spliced must be properly aligned and parallel to each other. Any misalignment can result in a weak splice and compromise the structural integrity of the construction. 4. Overlapping: The overlapping length of rebars should be sufficient to ensure the transfer of loads and maintain the continuity of reinforcement. It is crucial to follow the specified lap length to achieve the required strength and performance of the reinforced concrete structure. 5. Splice Configuration: The type of lap splice configuration depends on the structural requirements and the specific design of the project. Commonly used splice configurations include end-to-end splicing, staggered splicing, and mechanical splices. The selection of the appropriate splice configuration should be in compliance with relevant codes and standards. 6. Splice Preparation: The rebars at the lap splice area should be properly cleaned and prepared. This involves removing any loose rust or scale from the bar surface and providing adequate bond length between the bars. 7. Lap Splice Placement: The lap splice should be positioned at the designated location within the concrete member. It is important to ensure that the splice is not too close to the edge of the concrete element, as this can reduce the cover depth and affect the durability of the structure. 8. Splice Length Variations: In cases where the required lap length is not achievable due to space limitations or other restrictions, approved alternatives such as mechanical splices or welded splices can be considered. However, it is essential to consult the project engineer or designer to ensure compliance with the appropriate guidelines. 9. Quality Control: Proper quality control measures should be implemented during the lap splicing process. This includes monitoring the lap splice length, ensuring proper alignment, and conducting periodic inspections to check for any defects or deficiencies. It is important to note that the above guidelines are general recommendations, and the specific requirements for lap splicing may vary depending on the design specifications, construction codes, and local regulations. Therefore, it is always advisable to consult the project engineer or designer for the precise guidelines applicable to a particular project.

Q: What is the process of anchoring steel rebars in concrete?: To establish a sturdy and secure connection between steel rebars and concrete, a series of steps must be taken. Initially, the concrete surface where the rebars will be anchored must be adequately prepared. This typically entails cleansing the surface to eliminate any dirt, dust, or debris that could hinder the bonding process. It is also imperative to confirm that the concrete has fully cured and attained the required strength before proceeding. Subsequently, the rebars are cut to the desired length and shape as per the construction plans. Adhering to the specified dimensions and placement requirements is essential to guarantee proper reinforcement and structural integrity. Once the rebars are prepared, they are typically positioned in the desired location within the concrete formwork. The rebars need to be placed at the correct depth and spacing as outlined in the design. This is commonly achieved by employing plastic or metal chairs, spacers, or tie wire to hold the rebars firmly in place. Once the rebars are appropriately positioned, the next step involves fastening them to the concrete. One prevalent method of anchoring the rebars is by utilizing mechanical anchors or rebar couplers. These devices are designed to establish a strong connection between the rebars and the concrete through various mechanisms such as threading, crimping, or expansion. Alternatively, another technique for anchoring the rebars involves using adhesive or cementitious grouts. These substances are applied to the rebars and then inserted into pre-drilled holes in the concrete. The adhesive or grout aids in bonding the rebars to the concrete and provides additional reinforcement. Finally, after the rebars are anchored, the concrete is poured or placed around them. To ensure complete encapsulation of the rebars, the concrete must be consolidated effectively. This can be achieved by implementing techniques such as vibrating the concrete or employing specialized equipment. In conclusion, anchoring steel rebars in concrete necessitates meticulous planning, preparation, and execution to establish a dependable and long-lasting bond. Adhering to industry standards and design specifications is vital to achieve the desired structural strength and integrity.

Q: Can steel rebars be used in dams and reservoirs construction?: Yes, steel rebars can be used in dams and reservoirs construction. Steel rebars provide the necessary strength and reinforcement to withstand the immense pressure and load exerted by water in such structures.

Q: What is the recommended diameter of steel rebars for foundation reinforcement?: The recommended diameter of steel rebars for foundation reinforcement typically ranges from 10mm to 32mm, depending on the size and load-bearing requirements of the specific foundation project.

Q: What are the guidelines for the proper anchoring of steel rebars in walls?: The proper anchoring of steel rebars in walls is crucial to ensure the structural integrity and stability of the construction. Here are some guidelines to follow for the correct anchoring of steel rebars in walls: 1. Determine the required rebar size and spacing: The size and spacing of rebars depend on the design specifications and load requirements. Consult the structural engineer or refer to the building codes for the appropriate rebar size and spacing. 2. Clean and prepare the concrete surfaces: Before anchoring the rebars, ensure that the concrete surfaces are clean, free from dust, debris, and any loose material. Use a wire brush or compressed air to remove any contaminants. 3. Use proper anchoring techniques: The most common method for anchoring steel rebars in walls is by embedding them into the concrete. Ensure that the rebars are securely embedded by following these steps: a. Drill holes: Drill holes in the concrete wall at the specified locations and depths, ensuring that the diameter of the hole matches the rebar size. b. Clean the drilled holes: Remove any dust or debris from the drilled holes using compressed air or a brush. c. Insert rebars: Insert the rebars into the drilled holes, making sure they reach the required embedment depth. d. Proper spacing: Maintain the specified spacing between rebars based on the design requirements. e. Secure rebars: Use appropriate anchoring materials like epoxy resin or grout to secure the rebars in place. Follow the manufacturer's instructions for mixing and applying the anchoring material. f. Ensure proper alignment: Verify that the rebars are correctly aligned, both horizontally and vertically, before the anchoring material sets. 4. Allow sufficient curing time: After anchoring the rebars, allow sufficient time for the anchoring material to cure. This ensures that the rebars are firmly secured in place. 5. Properly protect the rebars: Once the rebars are anchored, protect them from corrosion by applying a suitable corrosion-resistant coating or using corrosion-resistant rebars. It is essential to follow these guidelines, as improper anchoring of steel rebars can compromise the structural integrity of the walls and pose safety risks. Always consult with a qualified structural engineer or building professional for specific guidelines tailored to your project.

Q: How do steel rebars enhance the bond between concrete and reinforcement?: Steel rebars enhance the bond between concrete and reinforcement by providing a mechanical interlock between the two materials. The ribs on the surface of rebars increase the surface area, allowing for greater adhesion and friction between the concrete and steel. This increased bond strength helps to transfer loads and stresses between the concrete and reinforcement, making the structure more durable and resistant to cracking or failure.

Q: Are steel rebars resistant to corrosion?: Yes, steel rebars are resistant to corrosion.

Q: What is the role of steel rebars in tunnel shaft construction?: The role of steel rebars in tunnel shaft construction is to provide strength and reinforcement to the concrete structure. These rebars are embedded within the concrete to enhance its tensile strength and prevent cracks or failures in the tunnel shaft. They help distribute and transfer loads, ensuring the structural integrity and durability of the tunnel shaft.

Q: How are steel rebars installed in concrete slabs?: Steel rebars are installed in concrete slabs through a process known as reinforcing. This process involves placing the rebars in a specific pattern or layout within the concrete slab to provide additional strength and support. Firstly, the area where the concrete slab will be poured is prepared by excavating and leveling the ground. This is followed by placing a layer of compacted gravel or crushed stone, known as the base, to provide a stable foundation for the slab. Once the base is in place, the rebars are positioned in the desired locations within the slab. The rebars are typically arranged in a grid-like pattern, with one layer of horizontal rebars placed parallel to each other and another layer of vertical rebars placed perpendicular to the horizontal ones. The spacing and diameter of the rebars depend on the design requirements and the intended load capacity of the slab. To ensure proper positioning, plastic bar supports or chairs are used to lift the rebars off the ground and keep them in place. The rebars are often tied together at the intersections using wire or metal ties to maintain their relative positions during the concrete pouring process. Once the rebars are properly positioned, the concrete is poured over them. The concrete mixture is carefully poured and spread evenly across the entire area of the slab, making sure it fully encases the rebars. Vibrating tools may be used to remove any air bubbles and ensure proper consolidation of the concrete around the rebars. After the concrete has been poured, it is left to cure and harden. During this time, the rebars provide reinforcement to the concrete, increasing its strength and load-bearing capacity. Once fully cured, the concrete slab with the embedded rebars becomes a durable and structurally sound element capable of withstanding various loads and stresses. In summary, steel rebars are installed in concrete slabs by positioning them in a grid-like pattern and then pouring the concrete over them. This reinforcing process enhances the strength and durability of the concrete slab, making it suitable for a wide range of applications.

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