ANGLE

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Hot rolled angle steel GB Q235 or Q345B or equivalent

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 minimum thickness for a steel angle beam?: The minimum thickness for a steel angle beam depends on various factors such as the load it needs to support, the length of the beam, and the specific steel grade being used. Generally, the minimum thickness for a steel angle beam is determined by structural engineers or professionals in the field, who consider the specific application and design requirements. Steel angle beams are commonly used in construction, framing, and other structural applications. They are designed to provide support and stability, particularly in load-bearing situations. The thickness of the steel angle beam is crucial to ensure its strength and ability to bear the intended load without deformation or failure. To determine the minimum thickness, engineers consider factors such as the maximum load that the beam will experience, the length of the beam, the material properties of the steel being used, and the safety factor required for the application. They use mathematical calculations and structural analysis to determine the appropriate thickness that will meet the necessary structural requirements. It is important to note that there are specific industry standards and building codes that must be followed when designing and constructing steel angle beams. These standards provide guidelines and requirements for minimum thickness, as well as other aspects such as tolerances, dimensions, and connection details. Therefore, it is always recommended to consult with a qualified structural engineer or professional in the field to determine the minimum thickness for a steel angle beam based on the specific requirements of the project. They will consider all relevant factors and ensure that the beam is designed and constructed to provide the necessary strength and safety.

Q: What are the tolerance specifications for steel angles?: The tolerance specifications for steel angles can differ based on various organizations and industries' specific standards and requirements. However, in general, the tolerance specifications for steel angles typically encompass measurements for dimensions like leg length, thickness, and straightness. Leg length tolerance ensures that the angle's legs are within an acceptable range of the desired measurement by allowing a certain deviation from the specified leg length. For instance, a tolerance specification of ±1/8 inch permits the leg length to deviate by up to 1/8 inch in either direction from the specified dimension. Thickness tolerance denotes the allowable deviation in the thickness of the steel angle. This specification guarantees consistency and adherence to an acceptable range of thickness. It is usually expressed as a percentage or an absolute value. For example, a tolerance specification of ±10% permits the thickness to deviate by up to 10% above or below the specified dimension. Straightness tolerance ensures that the steel angle is not bent or twisted and meets the required straightness criteria. It is commonly measured by the maximum allowable deviation from a straight line. This tolerance specification guarantees ease of fitting and alignment during construction or manufacturing processes. It is important to note that the specific tolerance specifications for steel angles may vary depending on the intended application, industry standards, and regulatory requirements. Therefore, it is recommended to consult the manufacturer, industry associations, or governing bodies for accurate and up-to-date information on the tolerance specifications for steel angles by referring to the relevant standards, codes, or specifications.

Q: What are the different types of steel angles used in storage tank construction?: There are several different types of steel angles that are commonly used in storage tank construction. These angles play a crucial role in providing structural support and stability to the tanks. 1. L-angles: L-angles, also known as unequal angles, are widely used in storage tank construction. They have one longer side and one shorter side, forming an L-shape. L-angles are commonly used for tank stiffeners, which help to prevent deformation and maintain the structural integrity of the tank. 2. T-angles: T-angles, also known as tee angles, are another type of steel angle used in storage tank construction. They have a T-shape, with one long side and one shorter side perpendicular to each other. T-angles are often used as horizontal and vertical bracing members in tank structures, providing additional strength and stability. 3. Equal angles: Equal angles, also known as right angles, have two equal sides forming a 90-degree angle. They are commonly used in tank construction for various applications, such as supporting tank roofs, providing reinforcement at the corners, or connecting tank components together. 4. Bulb angles: Bulb angles, also known as bulb flats, have a unique shape with a flat surface and a bulbous section at one end. These angles are often used for tank support structures, such as the tank bottom, to distribute the load evenly and minimize stress concentrations. 5. Rolled steel sections: In addition to the various types of angles mentioned above, rolled steel sections like I-beams, channels, and H-beams are also used in storage tank construction. These sections provide additional strength and support to the tank structure, particularly for larger tanks or in areas with high load requirements. Overall, the choice of steel angles in storage tank construction depends on the specific design requirements, load considerations, and structural integrity needs. It is essential to select the appropriate type and size of angles to ensure the tanks can withstand the anticipated loads and environmental conditions.

Q: Can steel angles be used for staircases or handrails?: Yes, steel angles can be used for staircases and handrails. Steel angles are versatile and commonly used in construction for their strength and durability. In staircases, steel angles can be used as stringers, providing support for the steps and ensuring stability. They can also be used as handrails, offering a sturdy grip and support for individuals using the staircase. Steel angles can be welded or bolted into place, making them an excellent choice for staircases and handrails that require secure and long-lasting installations. Additionally, steel angles can be customized to fit specific design requirements, allowing for flexibility in creating aesthetically pleasing and functional staircases and handrails.

Q: What are the common surface treatments for steel angles to enhance corrosion resistance?: There are several common surface treatments for steel angles that are used to enhance corrosion resistance. These treatments include: 1. Galvanizing: This is one of the most popular methods used to protect steel angles from corrosion. Galvanizing involves applying a layer of zinc to the surface of the steel through a process called hot-dip galvanizing. The zinc coating acts as a barrier, preventing moisture and corrosive substances from reaching the underlying steel. 2. Paint or Powder Coating: Applying a layer of paint or powder coating to the surface of steel angles can provide an additional layer of protection against corrosion. The paint or powder coating acts as a barrier, preventing exposure to moisture and other corrosive elements. This method is commonly used in applications where aesthetics are important, as it allows for a wide range of color options. 3. Phosphating: Phosphating involves applying a thin layer of zinc or manganese phosphate to the surface of the steel angle. This treatment creates a protective layer that enhances corrosion resistance by providing a barrier between the steel and corrosive substances. 4. Chromate Conversion Coating: This process involves immersing the steel angle in a solution containing chromates, which forms a thin layer of chromate conversion coating on the surface. This coating provides corrosion resistance by acting as a barrier against moisture and other corrosive elements. 5. Mechanical Finishing: Mechanical finishing techniques such as shot blasting or sandblasting can be used to remove any existing rust or scale from the surface of the steel angle. This process helps to improve the adhesion of subsequent coatings and treatments, thereby enhancing corrosion resistance. It is important to note that the choice of surface treatment for steel angles depends on the specific application, environmental conditions, and desired level of corrosion resistance. Consulting with a corrosion specialist or professional in the field can help determine the most suitable treatment for a particular situation.

Q: Can steel angles be used for curtain walls?: Yes, steel angles can be used for curtain walls. Steel angles are often used as a framing member in curtain wall systems due to their strength, durability, and ability to support the weight of the curtain wall. They provide structural support and help in transferring loads from the curtain wall to the building structure.

Q: What are the common methods of surface preparation for steel angles?: Common methods of surface preparation for steel angles include abrasive blasting, such as sandblasting or shot blasting, to remove rust, scale, and contaminants from the surface. Chemical cleaning can also be used to remove oils, greases, and other organic materials. Additionally, mechanical cleaning methods like wire brushing or grinding can be employed to smooth out rough surfaces and remove any remaining debris.

Q: What are the different types of steel angles used in door and window frames?: There are several types of steel angles commonly used in door and window frames, each offering unique benefits and applications. 1. L-shaped Angle: This is the most common type of steel angle used in door and window frames. It features a 90-degree angle and is typically used to provide structural support and reinforcement. L-shaped angles are versatile and can be easily welded or bolted into place, making them suitable for various frame designs. 2. T-shaped Angle: As the name suggests, T-shaped angles have a cross-section resembling the letter "T." They are often used to provide additional strength and stability to door and window frames. T-shaped angles are commonly used in heavy-duty applications where increased load-bearing capacity is required. 3. Equal Angle: Equal angles have two equal sides that form a 90-degree angle. They are commonly used in door and window frames that require equal support on both sides. These angles are suitable for applications where symmetry and balance are important, ensuring that the frame remains stable and level. 4. Unequal Angle: Unlike equal angles, unequal angles have two sides of different lengths. They are commonly used in door and window frames that require varying degrees of support on each side. Unequal angles are versatile and can be used to compensate for differences in wall thickness or other structural considerations. 5. Slotted Angle: Slotted angles are often used in door and window frames that require adjustable or modular designs. They feature a series of holes or slots along their length, allowing for easy attachment and customization. Slotted angles are commonly used in DIY projects or applications where flexibility and adjustability are desired. It is worth noting that the choice of steel angle for door and window frames depends on various factors such as the specific application, load-bearing requirements, and aesthetic considerations. Consulting with a structural engineer or a professional in the field can help determine the most suitable type of steel angle for a particular project.

Q: Can steel angles support heavy loads?: Steel angles have the ability to bear heavy loads. These L-shaped metal bars, known as steel angles, are frequently employed in construction and engineering for their sturdy and long-lasting nature. The unique design of steel angles enables them to evenly distribute weight, rendering them capable of enduring substantial loads. They are commonly utilized as structural supports and reinforcement in a variety of structures, including buildings, bridges, and machinery. Furthermore, engineers can tailor the dimensions and thickness of steel angles to meet precise load demands, making them a dependable option for supporting heavy loads.

Q: How do steel angles contribute to sustainable construction?: Steel angles contribute to sustainable construction in several ways: 1. Durability: Steel angles are made of a highly durable material that can withstand extreme weather conditions and have a long lifespan. This reduces the need for frequent repairs or replacements, minimizing waste and resources. 2. Recyclability: Steel angles are 100% recyclable, meaning that at the end of their life cycle, they can be melted down and reused to make new steel products. This reduces the demand for virgin steel production, which is energy-intensive and contributes to greenhouse gas emissions. 3. Structural efficiency: Steel angles provide excellent structural support, allowing for the creation of lighter and more efficient building designs. This reduces the amount of material needed for construction, minimizing the overall environmental impact. 4. Energy efficiency: Steel angles can be easily integrated into energy-efficient building systems. They are often used in the construction of sustainable buildings, such as green roofs, solar panel installations, and energy-efficient facades, which help reduce energy consumption and promote a greener environment. Overall, steel angles contribute to sustainable construction by offering durability, recyclability, structural efficiency, and energy efficiency, making them an environmentally friendly choice for builders and architects.

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