hot rolled alloy angle steel

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Payment Terms:: TT OR LC

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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:What is the process of galvanizing steel angles?: The process of galvanizing steel angles involves immersing the angles in a bath of molten zinc. This helps to protect the steel from corrosion and increases its longevity. The angles are first cleaned to remove any dirt or grease, then they are dipped into a pre-treatment solution to prepare the surface for galvanization. Next, the angles are immersed in the molten zinc bath, where a metallurgical reaction takes place, resulting in a layer of zinc coating on the steel. Finally, the angles are cooled and inspected for quality before being ready for use.

Q:What are the limitations of using steel angles in corrosive or saltwater environments?: The use of steel angles in corrosive or saltwater environments is limited due to their susceptibility to corrosion. Steel is primarily composed of iron, which can react with oxygen and water to form iron oxide, commonly known as rust. In the presence of corrosive substances or saltwater, this corrosion process is accelerated. One limitation is the potential for accelerated corrosion in these environments. Corrosion weakens the structural integrity of the steel angles, which can compromise the overall stability and safety of any structure they are used in. This can be particularly concerning in applications where the steel angles are load-bearing or subjected to significant stress. Another limitation is the decrease in the lifespan of steel angles in corrosive or saltwater environments. The ongoing corrosion process can significantly reduce the lifespan of the steel angles, leading to more frequent maintenance or replacement requirements. This can result in higher costs and potential disruptions to operations or projects. Furthermore, the appearance of the steel angles can be negatively affected by corrosion in corrosive or saltwater environments. Rust stains can develop on the surface of the steel, which can be aesthetically unappealing, especially in applications where the steel angles are visible. To overcome these limitations, alternative materials can be considered for corrosive or saltwater environments. Stainless steel, for example, contains a high proportion of chromium, which provides it with enhanced corrosion resistance. Additionally, protective coatings or treatments, such as galvanizing or epoxy coatings, can be applied to steel angles to provide an additional barrier against corrosion. Overall, while steel angles are versatile and widely used in various applications, their use in corrosive or saltwater environments is limited due to their susceptibility to corrosion. It is crucial to carefully evaluate the specific environment and consider alternative materials or protective measures to ensure the longevity and integrity of any structure or project.

Q:What are the different methods of surface cleaning for steel angles?: There are several different methods of surface cleaning for steel angles, each with their own advantages and applications. 1. Manual Cleaning: This method involves using hand tools such as wire brushes, sandpaper, or abrasive pads to physically remove dirt, rust, or other contaminants from the surface of the steel angles. Manual cleaning is effective for small areas or light surface contamination, but it can be time-consuming and labor-intensive for larger or heavily soiled surfaces. 2. Chemical Cleaning: Chemical cleaning involves the use of specialized cleaning agents or solvents to dissolve or remove contaminants from the steel angles. These solutions are applied to the surface and allowed to react with the contaminants, which can then be rinsed or wiped away. Chemical cleaning is effective for removing oils, greases, paints, and other stubborn substances from steel angles. However, it requires proper safety precautions and disposal of hazardous waste. 3. Power Washing: Power washing or pressure washing utilizes a high-pressure water spray to remove dirt, loose paint, and other debris from the surface of steel angles. This method is particularly suitable for large or outdoor surfaces as it can cover a large area quickly. Power washing can be combined with chemical cleaning for enhanced results, and it is important to adjust the pressure and nozzle size to prevent damage to the steel angles. 4. Abrasive Blasting: Abrasive blasting, also known as sandblasting, involves using compressed air or water to propel abrasive materials against the surface of the steel angles. This method is highly effective for removing heavy rust, old coatings, and tough contaminants. It can be done using various abrasive materials such as sand, grit, or steel shot. However, proper safety measures must be taken, including wearing protective gear and ensuring proper containment of the abrasive materials. 5. Electrochemical Cleaning: Electrochemical cleaning, also known as electrolysis, uses an electric current to remove rust and other contaminants from the surface of steel angles. The steel angles are immersed in an electrolyte solution, and a direct current is passed through them, causing the rust to dissolve and be collected on a sacrificial anode. Electrochemical cleaning is effective for removing rust without damaging the underlying steel, making it a popular choice for delicate or intricate surfaces. It is important to consider factors such as the size and condition of the steel angles, the type of contamination, and the available resources and equipment when choosing the most suitable method of surface cleaning.

Q:What are the different types of steel angles used in bridges?: A variety of steel angles are commonly utilized in bridge construction for different purposes. These include: 1. Equal Leg Angles: These angles possess equal legs and are frequently employed to provide structural support in bridge construction. They contribute stability and strength to the bridge structure. 2. Unequal Leg Angles: These angles have uneven legs and are used when additional strength or specific load-bearing requirements are necessary. They are often combined with equal leg angles to evenly distribute weight and provide support. 3. L-Shaped Angles: L-shaped angles serve various purposes in bridge construction, such as connecting beams and columns or offering additional support at connection points. They are often used in conjunction with other angle types to create a robust and well-supported bridge structure. 4. Tapered Angles: Tapered angles find application in bridges where a change in width or height is required. They are frequently utilized in bridge piers or abutments to ensure a seamless transition between different sections of the bridge. 5. Bent Angles: Bent angles are used in bridges that require a specific angle to accommodate the design or alignment of the bridge. These angles are often custom-made to suit the specific needs of the bridge construction project. 6. Hollow Structural Section (HSS) Angles: HSS angles are hollow steel sections employed in bridge construction to enhance strength and reduce the overall weight of the structure. They are commonly utilized in situations where weight reduction is a priority, such as in long-span bridges or bridges with high load-bearing requirements. Each of these steel angles serves a distinct purpose in bridge construction, and their selection depends on factors such as design requirements, load-bearing capacity, and structural stability necessary for the bridge.

Q:Unequal angle steel: Unequal angle steel: in the field of engineering materials, relative to two equal side length equal angles, refers to the section of the right angle, L shaped, and unequal length of both sides of the angle. It is widely used in engineering structure, structure and variety of municipal public utilities, civil and military industries, such as industrial beams, bridges, towers, hoisting and conveying machinery, ships, industrial furnace, reaction tower, container frame, and warehouses, because the amount is less than the unilateral angle, so the relative price slightly higher.

Q:How do steel angles contribute to the overall stability of a building frame?: Steel angles contribute to the overall stability of a building frame by providing structural support and reinforcement. They are commonly used as braces and connections in building frames to increase their load-bearing capacity and resist forces such as wind, earthquakes, and heavy loads. The angles help distribute and transfer the loads throughout the structure, enhancing its stability and preventing deformation or collapse.

Q:What is the cost of steel angles compared to other structural materials?: Various factors, such as market conditions, availability, and specific requirements, can cause the cost of steel angles to vary in comparison to other structural materials. However, as a rule, steel angles are often seen as a cost-effective choice for structural applications. When compared to materials like concrete or timber, steel angles are generally considered more affordable due to their relatively low production costs. Steel is readily available, and advancements in production techniques have resulted in competitive pricing. Furthermore, steel angles offer an exceptional strength-to-weight ratio, enabling lighter and more cost-efficient structural designs. Compared to other metals like aluminum or stainless steel, steel angles are typically more cost-effective. While aluminum and stainless steel may have certain advantages in terms of corrosion resistance or aesthetic appeal, their production processes and material properties tend to make them more expensive. It is worth noting that the exact cost of steel angles can vary depending on specific dimensions, quality, and quantity requirements. Prices may also fluctuate due to market conditions, such as changes in raw material costs or global supply and demand dynamics. Therefore, it is advisable to consult suppliers or industry professionals for accurate and up-to-date pricing information for steel angles.

Q:Can steel angles be used in automotive applications?: Indeed, automotive applications can make use of steel angles. The automotive industry frequently employs steel angles for a multitude of purposes, including frames, chassis, supports, brackets, and reinforcements. The reason behind this preference lies in the fact that steel angles possess exceptional strength, durability, and resistance to impact and vibrations. Consequently, they prove suitable for enduring the challenging conditions and demanding loads that arise within automotive applications. Furthermore, the ease with which steel angles can be welded or bolted together grants designers and constructors flexibility when designing and constructing automotive components. On the whole, due to their strength, versatility, and capacity to withstand the industry's rigorous demands, steel angles represent a dependable and cost-effective choice for automotive applications.

Q:How do you calculate the shear capacity of a steel angle?: In order to determine the shear capacity of a steel angle, several factors must be taken into account. Firstly, the material properties must be considered. This involves determining the yield strength of the steel angle, which signifies the maximum stress the material can endure before permanent deformation occurs. Next, the cross-sectional area of the steel angle needs to be measured. This can be accomplished by calculating the width and thickness of the angle and multiplying them together. The shear stress applied to the angle can then be calculated by dividing the applied force by the cross-sectional area. To assess the shear capacity, the calculated shear stress is compared to the yield strength of the steel angle. If the shear stress is lower than the yield strength, the angle is deemed safe and capable of withstanding the applied force. Conversely, if the shear stress exceeds the yield strength, the angle may fail and deform. It should be noted that different design codes and standards may have specific equations or factors to be taken into consideration when determining the shear capacity of a steel angle. Therefore, it is advisable to consult the relevant design code or seek assistance from a structural engineer to ensure accurate and secure calculations.

Q:Can steel angles be used in the construction of airport terminals?: Yes, steel angles can be used in the construction of airport terminals. Steel angles are commonly used in structural applications because of their strength and durability. They can be used for framing, support, and reinforcement in various structural elements of airport terminals, such as columns, beams, and trusses.

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