ASTM A36 high quality angle steel 20-250mm

ASTM A36 high quality angle steel 20-250mm System 1

ASTM A36 high quality angle steel 20-250mm

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 200000 m.t./month

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Angle steel Details:

Minimum Order Quantity:		Unit:	m.t	Loading Port:
Supply Ability:		Payment Terms:		Package:	bundle

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: Can steel angles be used for electrical conduits or cable trays?: No, steel angles are not typically used for electrical conduits or cable trays. These applications usually require specialized materials and designs that are specifically engineered for electrical installations to ensure safety and efficiency.

Q: How do you prevent steel angles from warping?: To prevent the warping of steel angles, there are several measures that can be taken: 1. Store the steel angles in a dry environment and avoid moisture exposure. This will prevent rust and warping. Use pallets or racks to store them horizontally, minimizing bending stress. 2. Employ controlled cooling techniques during fabrication. Rapid temperature changes can induce warping, so it is important to cool gradually. Air cooling or controlled cooling baths can help avoid thermal stresses and minimize warping. 3. Minimize heat input during welding. Excessive heat can cause localized thermal expansion and contraction, leading to warping. Utilize proper welding techniques such as shorter welding times, smaller weld beads, and intermittent welding to control the temperature gradient and minimize heat input. 4. Consider preheating and post-welding stress relief for thicker or high-strength steel angles. Preheating before welding can reduce the risk of warping, and post-welding stress relief heat treatments can relieve any residual stresses and prevent warping. 5. Handle and transport the steel angles properly. Adequately support and secure them during transit to avoid bending or flexing. Avoid dropping or mishandling, as this can introduce structural deformations that lead to warping. By implementing these preventive measures, the risk of steel angles warping can be minimized, ensuring their structural integrity for various applications.

Q: What are the different grades of steel used in manufacturing steel angles?: Steel angles used in manufacturing can be found in various grades. These grades differ in terms of composition, strength, and other properties. The selection of a grade is based on the specific requirements of the application. One commonly used grade is mild steel, which is also known as low carbon steel or A36 steel. This grade is widely accessible and frequently utilized due to its affordability and ease of machining. It is often employed in general construction and fabrication projects. Another grade is high-strength low-alloy steel (HSLA), which contains small amounts of alloying elements such as copper, phosphorus, niobium, or vanadium. HSLA steels provide higher strength and improved corrosion resistance compared to mild steel. This makes them suitable for structural applications in heavy machinery or marine environments. There are also higher-strength steels, such as high-strength steel angles (HSS) or ultra-high-strength steel angles (UHSS). These grades are specifically engineered to offer exceptional strength and durability. They are commonly used in demanding applications like bridges, high-rise buildings, or automotive components. Stainless steel is another frequently used grade in the manufacturing of steel angles. Its excellent corrosion resistance makes stainless steel angles ideal for food processing, chemical, or marine applications where resistance to rust and staining is crucial. The specific grade of steel employed in manufacturing steel angles depends on factors like load-bearing requirements, corrosion resistance, and cost considerations. Consulting with a structural engineer or steel supplier can aid in determining the most suitable grade for a particular application.

Q: What are the different methods of surface painting for steel angles?: There exists a variety of techniques for surface painting steel angles, each offering distinct advantages and considerations. 1. Brushing: The most commonly employed method for surface painting steel angles involves the manual application of paint using a brush. Brushing provides excellent control and precision, making it well-suited for smaller projects or touch-ups. However, it may not be as efficient for larger-scale applications. 2. Spraying: When a large area needs to be painted quickly, spraying is a popular technique for painting steel angles. It involves the even distribution of paint onto the surface using a paint spray gun or aerosol canister. Spraying results in a smooth and uniform finish, but proper safety precautions, such as wearing a mask and ensuring adequate ventilation, are necessary. 3. Dipping: In this method, steel angles are immersed in a tank or container filled with paint. Dipping ensures complete coverage and is often utilized in high-volume production processes. However, it may not be suitable for angles with intricate designs or complex shapes, as excess paint may drip or accumulate unevenly. 4. Electrostatic painting: Electrostatic painting involves charging the paint particles and applying them to a grounded steel angle. This creates an electromagnetic attraction, resulting in an even and efficient coverage. This technique is commonly employed in industrial settings and aids in reducing paint waste and overspray. 5. Powder coating: Powder coating is a dry finishing process that entails the application of a fine powder onto the surface of a steel angle. The powder is then heated and fused onto the metal, creating a durable and visually appealing finish. Powder coating offers excellent corrosion resistance and can be done in a variety of colors and textures. However, specialized equipment is required, and it may not be suitable for small-scale or on-site applications. When selecting a surface painting method for steel angles, careful consideration must be given to factors such as project size and complexity, desired finish quality, environmental conditions, and available resources. Seeking guidance from a professional painter or coating specialist can help determine the most appropriate method for a specific application.

Q: How do steel angles contribute to the overall load distribution in a structure?: Steel angles play a crucial role in contributing to the overall load distribution in a structure. These angled steel pieces, commonly referred to as angle irons or L-shaped beams, are commonly used as structural elements in construction projects. One of the significant contributions of steel angles is their ability to provide stability and support to various components of a structure. These angles are often used as braces, reinforcing the framework and preventing excessive movement or deformation. By distributing the load across different sections of the structure, steel angles help to evenly distribute the weight and stress, ensuring the overall stability and integrity of the building. Moreover, steel angles are frequently used as connections between different structural members. They can be bolted or welded to other beams, columns, or plates, acting as connectors that transfer loads from one component to another. This transfer of loads helps in redistributing the forces and minimizing concentrated stress, thereby enhancing the load-bearing capacity and overall performance of the structure. In addition, steel angles are also utilized in the construction of platforms, stairs, and other support structures. By providing a secure and stable platform for people or equipment, they contribute to the overall load distribution by safely distributing the weight and forces applied to these structures. Overall, steel angles are crucial in ensuring the overall load distribution in a structure by providing stability, support, and connections between various structural components. Their ability to evenly distribute the weight and stress helps in preventing structural failures, ensuring the longevity and safety of the building.

Q: How do you prevent steel angles from rusting?: There are several methods to prevent steel angles from rusting: 1. Protective Coatings: Applying a protective coating on the surface of steel angles is an effective way to prevent rust formation. Common coating options include paint, epoxy, enamel, and galvanized coatings. These coatings act as a barrier, preventing moisture and oxygen from reaching the steel surface, thus minimizing the chances of rusting. 2. Rust Inhibitors: Rust inhibitors are chemical compounds that can be applied to steel angles to prevent rust formation. These inhibitors work by either forming a protective layer on the steel surface or by actively inhibiting the corrosion process. Rust inhibitors can be applied as sprays, coatings, or even added to the steel during the manufacturing process. 3. Proper Storage and Handling: One of the simplest ways to prevent rust is to store and handle steel angles properly. This includes keeping them in a dry environment, preferably indoors or under a protective covering, to avoid exposure to moisture and humidity. Additionally, handling steel angles with clean, dry gloves can prevent the transfer of moisture from hands, which can accelerate the rusting process. 4. Regular Maintenance: Regular inspection and maintenance of steel angles can help identify and address any signs of rust formation at an early stage. Promptly addressing any rust spots by removing them with wire brushes or sandpaper and applying touch-up coatings can prevent further corrosion. 5. Dry Storage and Proper Ventilation: If steel angles are stored outdoors, it is crucial to ensure they are placed in a well-ventilated area to promote air circulation and prevent the accumulation of moisture. Furthermore, covering the angles with a waterproof tarp or plastic wrap can provide an additional layer of protection against rain, snow, and other weather elements. By implementing a combination of these preventive measures, steel angles can be safeguarded against rust formation, ensuring their longevity and structural integrity.

Q: How do you prevent galvanic corrosion between steel angles and aluminum components?: One effective way to prevent galvanic corrosion between steel angles and aluminum components is by using a barrier such as a non-conductive coating or a primer. Applying a layer of paint or epoxy on the steel angles can create a protective barrier between the two metals, preventing direct contact and reducing the likelihood of corrosion. Additionally, using isolation materials like rubber or plastic gaskets between the steel and aluminum can also help minimize galvanic corrosion. Regular inspection and maintenance, including ensuring proper drainage and reducing moisture exposure, can further contribute to preventing galvanic corrosion in this scenario.

Q: Are there any environmental concerns related to the production or disposal of steel angles?: There exist numerous environmental concerns in relation to the production and disposal of steel angles. To begin with, the production of steel angles necessitates substantial amounts of energy and raw materials, such as iron ore and coal. The extraction of these resources can result in detrimental effects on the environment, including habitat destruction, deforestation, and air and water pollution. Furthermore, the manufacturing process itself emits greenhouse gases and other pollutants, contributing to climate change and air pollution. Moreover, the disposal of steel angles can pose problems. Steel is not easily biodegradable and may take hundreds of years to decompose. Inadequate disposal methods, such as landfilling or incineration, can lead to the release of toxic substances and contribute to soil and water contamination. To address these environmental concerns, various measures can be implemented. Firstly, enhancing the efficiency of steel production processes can reduce energy consumption and emissions. The utilization of recycled steel in the production of steel angles can also aid in decreasing the demand for raw materials and minimizing environmental impacts. Additionally, the implementation of proper waste management and recycling programs can help minimize the environmental footprint of steel angle disposal. In conclusion, although steel angles are crucial in numerous industries and construction, their production and disposal can have significant environmental implications. It is vital to prioritize sustainable practices and technologies to mitigate these concerns and promote a more environmentally friendly approach to the production and disposal of steel angles.

Q: How are steel angles protected against atmospheric corrosion?: There are various methods available to protect steel angles from atmospheric corrosion. One commonly used method is the application of a protective coating, such as paint, on the surface of the steel angles. This coating acts as a barrier, preventing direct contact between the steel and moisture or oxygen, which are the main causes of corrosion. Another method of protection is galvanization. Galvanization involves coating the steel angles with a layer of zinc, either through hot-dip galvanization or electroplating. The zinc acts as a sacrificial layer, corroding instead of the steel. This sacrificial corrosion process helps safeguard the steel angles from atmospheric corrosion. Apart from coatings, inhibitors can also be used to protect steel angles. Inhibitors are substances that can be added to the environment or applied directly to the steel surface to slow down or prevent corrosion. These inhibitors work by forming a protective film on the steel surface or by altering the chemical environment to reduce corrosion. Regular maintenance and inspection are crucial in protecting steel angles against atmospheric corrosion. This includes cleaning the surface of the steel angles to remove any dirt or debris that can trap moisture and speed up corrosion. It is also important to promptly repair any damaged or deteriorated coatings to ensure continuous protection against corrosion. In conclusion, a combination of protective coatings, galvanization, inhibitors, and regular maintenance is necessary to effectively shield steel angles from atmospheric corrosion and prolong their lifespan.

Q: What is the tensile strength of steel angles?: The tensile strength of steel angles may vary depending on the grade of steel and the method of manufacturing employed. In general, steel angles exhibit a considerable tensile strength. For instance, commonly used grades like A36 possess a tensile strength ranging from approximately 58,000 to 80,000 psi. Nevertheless, higher strength steel grades like A572 or A588 can surpass 100,000 psi in terms of tensile strength. To ascertain the precise tensile strength of steel angles in a particular application, it is crucial to refer to the specifications provided by the manufacturer and the specific grade of steel.

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