hot rolled Q235 steel angle bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Quick Details

Standard:GB, JIS
Dimensions:20*0.8-20*3
Grade:Q195-Q420 Series
Place of Origin:Hebei, China (Mainland)
Brand Name:DH
Model Number:2.5#
Type:Equal
Application:building

Packaging & Delivery

Packaging Details:	400 pcs/ bundle
Delivery Detail:	15 days

Specifications

Q235 SS400 hot rolled
20*0.8-200*25
high quality low price and good service

Product Description

specifications: 20mm*20mm*0.8mm -20mm*20mm*3mm

2.5mm*25mm*0.8mm- 25mm*25mm*3mm

30mm*30mm*0.8mm -30mm*30mm*4mm

3.5mm*35mm*0.8mm- 35mm*35mm*4mm

38mm*38mm*0.8mm -38mm*38mm*4mm

40mm*40mm*0.8mm -40mm*40mm*5mm

50mm*50mm*0.8mm -50mm*50mm*5mm

length: 5.5m 5.8m 6m 9m 12m

our advantage: 1. thickness can be 0.8mm

2. bottom price

3.reliable quality and service

4. fast delivery

grade:Q235 , Q345, SS400

package: in bundle, fasten by wire rod with tags or according to customers' requirements.

Q: How can steel angles be protected against corrosion?: Steel angles can be protected against corrosion through various methods. One common method is the application of protective coatings. These coatings act as a barrier between the steel angles and corrosive elements, preventing direct contact and inhibiting corrosion. Coatings such as paint, epoxy, or zinc-based materials can be used to provide this protection. Another effective method is galvanization. This process involves coating the steel angles with a layer of zinc, which acts as a sacrificial anode. When corrosion occurs, the zinc layer will corrode first, protecting the steel underneath. This is particularly effective in harsh environments, such as marine or industrial settings. Regular maintenance and inspection are essential in preventing corrosion. Any damage or deterioration to the protective coating should be promptly repaired to ensure continued protection. Furthermore, keeping the steel angles clean and free from debris or moisture buildup can also help prevent corrosion. In some cases, cathodic protection may be employed. This involves connecting the steel angles to a sacrificial anode, typically made of a more reactive metal, such as aluminum or magnesium. The anode will corrode instead of the steel angles, providing protection against corrosion. Lastly, proper design and installation of steel angles can also contribute to their corrosion resistance. Ensuring adequate drainage and ventilation, using materials compatible with the environment, and minimizing exposure to corrosive elements can all help in protecting steel angles against corrosion.

Q: Can steel angles be used for framing applications?: Yes, steel angles can be used for framing applications. Steel angles are commonly used in construction and framing due to their durability and strength. They provide structural support and stability when building walls, floors, and roofs. Steel angles are versatile and can be easily welded, bolted, or screwed together to create a strong and stable frame. They are available in various sizes and thicknesses to accommodate different framing requirements. Overall, steel angles are a popular choice for framing applications due to their strength, durability, and ease of use.

Q: What are the common design codes or standards for steel angles?: Structural design of steel angles is governed by various design codes and standards, which guarantee their compliance with safety and performance criteria. The American Institute of Steel Construction (AISC) Manual of Steel Construction is widely recognized as a crucial design code for steel angles. This manual offers comprehensive guidelines and specifications for the design, fabrication, and erection of steel structures, encompassing angles as well. It provides intricate details regarding design strength, allowable stress levels, and geometric properties of angles. Besides the AISC Manual, other design codes and standards may also apply depending on the specific project and location. These include internationally recognized standards such as the Eurocode, British Standards (BS), and Australian Standards (AS). Each of these standards may have slight variations in their requirements for steel angle design and utilization. Therefore, referring to the relevant standard for a specific project is of utmost importance. Moreover, the American Society for Testing and Materials (ASTM) has established standards for the physical and mechanical properties of steel angles. These standards guarantee that the angles satisfy certain quality and performance requirements. Among the most commonly utilized ASTM standards for steel angles is ASTM A36, which outlines general requirements for carbon structural steel. To ensure structural integrity and reliability, common design codes and standards for steel angles provide guidance on crucial factors such as load capacity, strength, and safety considerations. By adhering to these codes and standards, steel angles are designed and employed in a manner that promotes their structural soundness and dependability.

Q: What is the maximum allowable compressive stress for a steel angle?: The maximum allowable compressive stress for a steel angle depends on various factors such as the type of steel, its dimensions, and the specific design and safety codes being followed. It is recommended to refer to the relevant structural engineering guidelines, codes, or specifications to determine the exact maximum allowable compressive stress for a steel angle in a particular application.

Q: What are the common surface preparations for painting steel angles?: The common surface preparations for painting steel angles typically involve a series of steps to ensure proper adhesion and durability of the paint. These preparations include: 1. Surface cleaning: The steel angles should be thoroughly cleaned to remove any dirt, grease, oil, or other contaminants. This can be done using solvents or degreasers, followed by a rinse with clean water. 2. Rust removal: If there is any rust present on the steel angles, it needs to be removed. This can be done by wire brushing, sanding, or using a rust remover or converter. The goal is to achieve a clean, smooth surface free of rust. 3. Surface roughening: Steel surfaces are often smooth, which can make it difficult for the paint to adhere properly. To improve adhesion, the surface can be roughened using methods like sanding, abrasive blasting, or using a chemical etching solution. This helps create a better surface for the paint to grip onto. 4. Primer application: Applying a primer is crucial for steel angles, as it helps to promote adhesion, prevent corrosion, and increase the lifespan of the paint job. The primer should be chosen based on the type of paint being used and can be applied using brushes, rollers, or sprayers. 5. Paint application: Once the primer has dried, the paint can be applied. Depending on the desired finish and durability, multiple coats may be required. It is important to follow the manufacturer's instructions for proper drying times between coats. By following these common surface preparations, the steel angles will be ready for painting, ensuring a long-lasting and aesthetically pleasing finish.

Q: What are the limitations of using steel angles in highly corrosive or chemical environments?: The limitations of using steel angles in highly corrosive or chemical environments include the risk of accelerated corrosion and degradation of the steel material. Steel angles are susceptible to corrosion when exposed to corrosive substances or environments, which can weaken the structural integrity and durability of the angles over time. Additionally, certain chemicals may react with the steel, leading to chemical corrosion and further deterioration. To mitigate these limitations, alternative corrosion-resistant materials such as stainless steel or non-metallic composites should be considered for use in highly corrosive or chemical environments.

Q: Can steel angles support heavy machinery or equipment?: Yes, steel angles can support heavy machinery or equipment. Steel angles are commonly used in structural applications due to their high strength and durability. They provide excellent support and stability, making them suitable for handling heavy loads.

Q: What is the maximum length of a steel angle?: The maximum length of a steel angle typically depends on the manufacturing capabilities and transportation limitations. However, it is common for steel angles to be produced in lengths up to 40 feet or 12 meters.

Q: What are the different methods of reinforcing steel angles?: There are several methods of reinforcing steel angles, each with its own advantages and applications. One common method is the use of additional steel plates or brackets. These plates or brackets are typically welded or bolted to the existing steel angle to provide additional support and strength. This method is often used in applications where the steel angle is subject to high loads or stresses. Another method is the use of stiffeners, which are typically smaller steel angles or plates welded perpendicular to the existing angle. These stiffeners help to distribute the load more evenly and prevent the steel angle from buckling or bending under stress. This method is often used in applications where the steel angle is used as a structural member, such as in building frames or bridge supports. Additionally, reinforcing steel angles can be achieved through the use of concrete encasement or composite materials. In this method, the steel angle is embedded within a concrete matrix or combined with other materials such as fiberglass or carbon fiber. This combination provides enhanced strength, durability, and resistance to corrosion. This method is commonly used in construction projects where the steel angle is exposed to harsh environments or requires high performance. Overall, the different methods of reinforcing steel angles provide options for increasing the strength, stability, and durability of these structural components. The choice of method will depend on the specific application, load requirements, and environmental factors.

Q: What are the different methods of surface preparation for steel angles before painting?: There are various techniques available for preparing steel angles before painting, and the method chosen depends on the condition of the steel surface and the desired level of paint adhesion and durability. One widely used technique is abrasive blasting, also known as sandblasting. This entails directing abrasive particles towards the steel surface to eliminate rust, mill scale, and other contaminants. Abrasive blasting not only cleans the surface but also creates a rough texture, enhancing paint adhesion. Chemical cleaning is another method employed to prepare steel angles for painting. It involves utilizing chemical solutions or solvents to eliminate grease, oil, and other organic contaminants. This technique is particularly effective for stubborn contaminants that cannot be removed by abrasive blasting alone. Mechanical cleaning techniques, such as wire brushing or grinding, can be utilized to eliminate loose rust, scale, and old paint. These methods are suitable for smaller areas or localized rust spots. In certain instances, power tool cleaning may suffice. This involves using power tools like grinders, sanders, or wire brushes to clean the steel surface. However, it is important to ensure that these tools do not create a polished or smooth surface, as this can hinder paint adhesion. After the surface has been cleaned, it is crucial to remove any remaining contaminants by wiping the surface with a solvent or a clean cloth soaked in a suitable solvent. This step guarantees that the surface is free from any residual contaminants that could affect paint adhesion. Lastly, before painting, it is essential to prime the steel angles. Primers provide additional corrosion protection and enhance the adhesion of the topcoat. The choice of primer depends on the specific project requirements, such as exposure to harsh weather conditions or chemical exposure. In conclusion, the various methods of surface preparation for steel angles before painting include abrasive blasting, chemical cleaning, mechanical cleaning, power tool cleaning, solvent wiping, and priming. By selecting the appropriate method, one can ensure that the paint adheres well to the steel surface and provides long-lasting protection against corrosion.

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