ASTM STANDARD HIGH QUALITY HOT ROLLED ANGLE

ASTM STANDARD HIGH QUALITY HOT ROLLED ANGLE System 1

ASTM STANDARD HIGH QUALITY HOT ROLLED ANGLE

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 100000 m.t./month

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Mild Steel Profile Formed Angle L Type Small Sizes for Africa and Asia

Appearance: Black

Technique: Slitting hot rolled steel coil

Grade: Q235, Q195,A36 SS400 S235jr.St37-2

Standard: AISI,GB,DIN,ASTM,EN,JIS

Length: 6m, 9m, 12m or as your requirement.

Width: 10mm-1010mm

Thickness: 1.5mm-20mm

Business type: big manufacture

Place of origin: Tianjin China (Mainland)

Packaging Details: In bundles for exporting and sea worthy

Delivery Detail: Within 15-35 days after receiving L/C or deposite T/T

ASTM STANDARD HIGH QUALITY HOT ROLLED ANGLE

General specification as below:

Flat Bar Specification
Width (mm)	Thickness (mm)	Length (m)	Theoretical Weight (kg/m)
20	2.0	6/9/12	0.31
20	2.5	6/9/12	0.39
20	2.75	6/9/12	0.43
25	2.5	6/9/12	0.49
25	3.75	6/9/12	0.74
30	2.5	6/9/12	0.59
30	3.5	6/9/12	0.82
30	9.75	6/9/12	2.30
40	3.5	6/9/12	1.10
40	4.75	6/9/12	1.50
40	11.75	6/9/12	3.69
50	2.75	6/9/12	1.08
50	4.5	6/9/12	1.77
50	9.75	6/9/12	3.83
60	5.5	6/9/12	2.60
60	7.5	6/9/12	3.53
60	11.5	6/9/12	5.42
80	5.5	6/9/12	3.45
80	7.5	6/9/12	4.71
80	11.75	6/9/12	7.38
100	3.25	6/9/12	2.55
100	4.75	6/9/12	3.73
100	7.5	6/9/12	5.89
120	9.75	6/9/12	9.18
120	11.75	6/9/12	11.07
150	9.75	6/9/12	11.48
150	11.5	6/9/12	13.54
150	13.5	6/9/12	15.90
160	11.75	6/9/12	14.76
200	9.5	6/9/12	14.92
250	5.75	6/9/12	11.28
340	7.75	6/9/12	20.68

Products Advantages

1. high quality competitive price and Accurate in size

2. high dimensional accuracy

3. Guaranteed raw material

4.high utilization rate of material

5.convenient in construction, saving much time and labor

6. high mechanical strength

Application: Widely used for construction, Ship building, Machinery manufacturing ,steel structure,agriculture and steel grating.

Q: How do you prevent buckling of steel angles under compressive loads?: To prevent steel angles from buckling under compressive loads, there are several steps that can be taken: 1. Increasing the section modulus: By broadening or thickening the steel angle, its ability to resist bending can be improved, thus enhancing its resistance to compressive loads without buckling. 2. Increasing the moment of inertia: The moment of inertia, which determines a cross-sectional shape's resistance to bending, can be increased by either adding more material or using a different shape with a greater moment of inertia. This makes the steel angle stiffer and less prone to buckling. 3. Providing lateral support: Lateral support can be provided by incorporating bracing or stiffeners into the steel angle. This helps distribute the compressive load and prevents buckling. The bracing or stiffeners should be designed to withstand the applied loads and prevent any local distortions or deformations. 4. Using thicker or higher strength steel: Thicker steel has a higher resistance to bending, while higher strength steel can bear greater stresses before reaching its yield point. By utilizing thicker or higher strength steel, the steel angle can withstand higher compressive loads without buckling. 5. Properly designing and installing connections: The connections between the steel angle and other structural components should be carefully designed and installed. Sufficient connection details should be provided to ensure proper transfer of the compressive load and adequate support for the steel angle. 6. Taking the effective length factor into consideration: The effective length factor is a parameter that considers the buckling behavior of a member. By accurately incorporating the effective length factor into design calculations, the risk of buckling can be minimized. 7. Conducting a comprehensive structural analysis: It is crucial to conduct a structural analysis to determine the expected compressive loads and potential buckling modes. By utilizing appropriate software or calculations, the necessary measures can be implemented to prevent buckling. In conclusion, preventing buckling of steel angles under compressive loads requires a combination of design considerations, material selection, and proper installation techniques. By following these measures, the structural integrity and safety of steel angles can be ensured in various applications.

Q: What is the maximum allowable torsional lateral-torsional buckling stress for a steel angle?: The maximum allowable torsional lateral-torsional buckling stress for a steel angle depends on various factors, such as the material properties of the angle, the dimensions of the angle, and the specific application or design code being followed. In general, the maximum allowable torsional lateral-torsional buckling stress is determined by considering the critical load at which the angle would start to buckle due to combined torsional and lateral loads. This buckling mode occurs when the angle undergoes both torsional twisting and lateral deflection simultaneously, leading to a loss of stability. To calculate the maximum allowable stress, engineers typically use various formulas and design codes specific to the application. These formulas consider factors such as the angle's moment of inertia, cross-sectional dimensions, slenderness ratio, and other geometric properties. It is important to note that the maximum allowable torsional lateral-torsional buckling stress for a steel angle may differ depending on the design code being followed. Design codes such as the American Institute of Steel Construction (AISC) Steel Construction Manual or the Eurocode provide guidelines and equations to determine the maximum allowable stress for different types of steel angles. Therefore, to determine the specific maximum allowable torsional lateral-torsional buckling stress for a steel angle, it is necessary to consult the relevant design code or seek assistance from a qualified structural engineer.

Q: How do steel angles contribute to the overall load distribution in a structure?: The contribution of steel angles to the overall load distribution in a structure cannot be underestimated. These L-shaped beams, also known as angle irons, play a vital role in construction projects. One of the key advantages of steel angles is their ability to offer stability and support to different parts of a structure. These angles are commonly used as braces, reinforcing the framework and preventing excessive movement or deformation. By evenly distributing the load across various sections of the structure, steel angles ensure the stability and integrity of the building. Furthermore, steel angles are frequently employed as connectors between different structural elements. They can be bolted or welded to beams, columns, or plates, acting as connectors that transfer loads from one component to another. This transfer of loads helps redistribute forces and minimize concentrated stress, thereby improving the load-bearing capacity and overall performance of the structure. Moreover, steel angles find use 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. In summary, steel angles are indispensable in ensuring the overall load distribution in a structure. They provide stability, support, and connections between various structural components. The even distribution of weight and stress they enable helps prevent structural failures, ensuring the longevity and safety of the building.

Q: Can steel angles be fire-resistant?: Yes, steel angles can be fire-resistant. Steel, as a material, has inherent fire-resistant properties due to its high melting point and low thermal conductivity. When exposed to high temperatures, steel angles can maintain their structural integrity and resist deformation for a considerable amount of time. Additionally, steel angles can be further enhanced for fire resistance through various methods such as applying fire-resistant coatings or incorporating fire-resistant materials in their design. These measures help to increase the fire resistance of steel angles, making them suitable for applications where fire protection is necessary, such as in the construction of fire-resistant walls, ceilings, and structural systems.

Q: Are steel angles resistant to UV radiation or fading?: No, steel angles are not inherently resistant to UV radiation or fading. Steel, by nature, is susceptible to oxidation and corrosion when exposed to UV radiation and atmospheric conditions. Over time, the UV radiation can cause the steel to fade, lose its luster, and develop a patina. However, steps can be taken to mitigate the effects of UV radiation on steel angles. Applying protective coatings, such as paint or galvanizing, can provide a barrier against UV radiation and help prevent fading. Regular maintenance and proper care can also extend the lifespan and appearance of steel angles when exposed to UV radiation.

Q: What are the different types of steel angles used in bridge construction?: Some common types of steel angles used in bridge construction include equal leg angles, unequal leg angles, and L-shaped angles. These angles are often used to provide structural support and reinforcement in various bridge components, such as beams, columns, and bracings.

Q: Can steel angles be used in the construction of museums?: Yes, steel angles can be used in the construction of museums. Steel angles are commonly used as structural components in construction projects, including museums. They provide strength, stability, and versatility, making them suitable for various architectural and design requirements in museum construction.

Q: How do you determine the center of gravity for a steel angle?: To determine the center of gravity for a steel angle, you need to consider its shape and dimensions. The center of gravity is the point where the weight of the object is evenly distributed, and finding this point is crucial for understanding its stability and balance. First, measure the length, width, and thickness of the steel angle. These measurements will help you calculate the area and volume of the angle, which are essential for determining the center of gravity. Next, locate the centroid of the steel angle. The centroid is the geometric center of the object, and it represents the point where all the weight is concentrated. For a symmetrical steel angle, the centroid will be at the intersection of the two axes of symmetry. However, if the angle is asymmetrical, finding the centroid might require more complex calculations. To calculate the centroid, use the formulas for the area moment of inertia. These formulas depend on the shape of the angle. For example, if the angle is a simple L-shape, the centroid can be determined by finding the average of the coordinates of the two legs' centroids. Once you have determined the centroid, you can then locate the center of gravity. The center of gravity coincides with the centroid of the steel angle in uniform density objects. However, for objects with non-uniform density, additional calculations might be required to account for variations in weight distribution. In summary, determining the center of gravity for a steel angle involves measuring its dimensions, calculating the centroid based on its shape, and then locating the center of gravity. This information is crucial for understanding the angle's stability and balance, especially in applications where it will be subjected to external forces or loads.

Q: What is the cost of steel angles compared to other structural materials?: The cost of steel angles compared to other structural materials can vary depending on factors such as the specific type of material, market conditions, and quantity needed. However, generally speaking, steel angles tend to be a cost-effective choice for structural applications due to their durability, strength, and versatility.

Q: What are the different methods of surface preparation for painting steel angles?: There are several methods of surface preparation for painting steel angles, each of which have their own benefits and considerations. 1. Manual cleaning: This method involves using hand tools such as wire brushes, sandpaper, or scrapers to remove loose rust, mill scale, and other contaminants. While it is a cost-effective option, it may not be suitable for large-scale projects or areas that are difficult to access. 2. Power tool cleaning: Power tools like grinders, sanders, or wire wheels can be used to mechanically remove rust, scale, and old paint from the surface of steel angles. This method is more efficient than manual cleaning and can be used in larger projects, but proper safety precautions and protective gear should be used. 3. Chemical cleaning: Chemical cleaning involves using solvents or acidic solutions to dissolve rust and remove contaminants from the steel surface. This method is effective for heavily corroded or hard-to-reach areas, but it requires careful handling and disposal of the chemicals. 4. Abrasive blasting: Abrasive blasting, also known as sandblasting, uses compressed air to propel abrasive materials such as sand, grit, or glass beads onto the surface of steel angles. This method is highly effective in removing all types of contaminants, providing a clean and rough surface for paint adhesion. However, it requires specialized equipment and should be conducted by trained professionals due to potential health hazards. Regardless of the method chosen, it is essential to ensure that the steel angles are thoroughly cleaned and free from contaminants before painting. This will help to achieve better paint adhesion, prolong the lifespan of the coating, and enhance the overall durability of the steel structure.

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