Angle steel GB Q235B 20-250MM high quality hot rolled

Angle steel GB Q235B 20-250MM high quality hot rolled System 1

Angle steel GB Q235B 20-250MM high quality hot rolled

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000 m.t./month

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Angle Steel Details:

Minimum Order Quantity:	25mtons	Unit:	m.t.	Loading Port:	China Main Port
Supply Ability:	80000-100000MTS/YEAR	Payment Terms:	TT or LC

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 transportation infrastructure projects?: Yes, steel angles can be used for transportation infrastructure projects. Steel angles are commonly used in the construction industry for various applications, including transportation infrastructure projects such as bridges, highways, and railways. They provide structural support and stability to these structures, making them strong and durable. Steel angles are versatile and can be easily fabricated and installed, making them an ideal choice for transportation infrastructure projects where strength and reliability are crucial. Additionally, steel angles have high load-bearing capacity and resistance to environmental factors, ensuring the longevity and safety of the transportation infrastructure. Consequently, steel angles are widely utilized in transportation infrastructure projects worldwide.

Q: What are the common bending or forming processes used for steel angles?: The common bending or forming processes used for steel angles include cold bending, hot bending, roll forming, and press brake forming.

Q: How do you straighten a bent steel angle?: To straighten a bent steel angle, you can use a combination of manual force and mechanical aids. First, secure the angle in a vice or clamp it to a sturdy surface. Then, gently apply pressure in the opposite direction of the bend using a mallet or hammer. For more complex bends, you may need to use a hydraulic press or a bending machine. It is important to apply gradual force and check the angle's alignment frequently to avoid over-straightening or damaging the steel.

Q: What are the common methods of surface finishing for steel angles?: Steel angles can be surface finished in various ways to achieve specific aesthetic and functional properties. The following methods are commonly used: 1. Paint application: To protect against corrosion and enhance appearance, a protective coat of paint is applied to the steel angle. Different types of paint, like epoxy, acrylic, or powder coatings, are chosen based on specific needs. 2. Galvanization: This method involves immersing the steel angle in molten zinc to create a protective layer on its surface. Galvanization is particularly effective for steel angles exposed to harsh environments or outdoor use. 3. Powder coating: In this process, a dry powder is electrostatically sprayed onto the steel angle and then cured in an oven. The result is a durable finish that resists chipping, fading, and corrosion. Powder coating is preferred when a thicker, more robust finish is desired. 4. Anodizing: Although mainly used for aluminum, anodizing can also be applied to steel angles. It creates an oxide layer on the surface through an electrochemical process, providing increased corrosion resistance and the option to add color. 5. Shot blasting: This surface preparation technique involves bombarding the steel angle with small steel shots at high velocity. Shot blasting removes rust, mill scale, and other impurities, leaving the surface clean and prepared for further finishing processes. 6. Polishing: This technique mechanically smooths and shines the steel angle's surface, achieving a reflective, mirror-like finish or removing imperfections. These methods offer different advantages and are suitable for various applications. The choice of method depends on factors such as desired appearance, environmental conditions, and specific performance requirements.

Q: What are the different specifications for steel angles?: The different specifications for steel angles include the dimensions (length, width, and thickness), the weight per foot, the shape of the angle (equal or unequal leg), the type of steel used (such as carbon steel or stainless steel), and any additional features or finishes required (such as galvanized or painted).

Q: What is the typical thickness of a steel angle?: The specific application and the desired strength are factors that can cause the typical thickness of a steel angle to vary. Generally, steel angles are offered in various thickness options, ranging from 1/8 inch (3.18 mm) to 3/4 inch (19.05 mm) or greater. Determining the appropriate thickness involves considering aspects like load-bearing necessities, structural design, and the desired durability level.

Q: What are the different types of corrosion protection coatings for steel angles?: There are several types of corrosion protection coatings available for steel angles, each designed to provide varying levels of protection against corrosion. 1. Paint Coatings: One of the most common types of corrosion protection coatings for steel angles is paint. Paint coatings act as a barrier between the steel surface and the corrosive elements in the environment. They are usually applied in multiple layers and can be customized to meet specific requirements, such as resistance to chemicals or UV radiation. 2. Galvanizing: Galvanizing is another widely used corrosion protection method for steel angles. It involves applying a layer of zinc to the steel surface through a process called hot-dip galvanizing. This coating provides excellent protection against corrosion as the zinc layer acts as a sacrificial anode, corroding before the steel does. Galvanized steel angles are commonly used in outdoor applications where they may be exposed to moisture and harsh weather conditions. 3. Powder Coatings: Powder coatings are a type of protective coating that is applied as a dry powder and then cured using heat. They provide a durable and corrosion-resistant finish to steel angles. Powder coatings can be customized in terms of color, texture, and thickness, offering both aesthetic appeal and enhanced protection against corrosion. 4. Epoxy Coatings: Epoxy coatings are often used for industrial applications where steel angles may be exposed to harsh chemicals or abrasive environments. These coatings form a strong, protective layer that resists corrosion, as well as chemicals, solvents, and abrasion. Epoxy coatings can be applied as a single layer or in combination with other coatings for added protection. 5. Organic Coatings: Organic coatings, such as polyurethane or acrylic coatings, are commonly used in architectural applications where steel angles require protection from corrosion while maintaining an aesthetically pleasing appearance. These coatings provide good resistance to weathering, UV radiation, and corrosion, ensuring the longevity of the steel angles. It is important to consider the specific application, environmental conditions, and budget constraints when selecting a corrosion protection coating for steel angles. Consulting with a corrosion specialist or coating supplier can help determine the most suitable coating for the intended use.

Q: What is the difference between hot-rolled and cold-rolled steel angles?: Hot-rolled and cold-rolled steel angles refer to two different manufacturing processes used to create steel angles with varying characteristics. Hot-rolled steel angles are produced by heating a steel billet or ingot to a high temperature and then passing it through a series of rollers. This process allows for the metal to be shaped and formed while it is still in a malleable and pliable state. As a result, hot-rolled steel angles tend to have a rougher surface finish and less precise dimensions compared to cold-rolled angles. However, they are generally stronger and more durable, making them suitable for structural applications that require high strength and load-bearing capacity. On the other hand, cold-rolled steel angles are created by passing hot-rolled steel through a series of rollers at room temperature. This process not only helps to refine the dimensions and surface finish of the steel angles but also increases their strength and hardness. Cold-rolled angles have a smoother surface finish and more accurate dimensions, which makes them ideal for applications that require a precise fit or a smoother appearance. They are commonly used in architectural and decorative applications, as well as in industries where aesthetics and precision are important. In summary, the main differences between hot-rolled and cold-rolled steel angles lie in their manufacturing processes, surface finish, dimensional accuracy, and applications. Hot-rolled angles are stronger and rougher, suitable for structural purposes, while cold-rolled angles have a smoother finish and precise dimensions, making them more suitable for decorative and architectural applications.

Q: What is the process of cold bending steel angles?: The process of cold bending steel angles involves manipulating the angles into a desired shape without the use of heat. This is done by applying force or pressure to the angles in a controlled manner. First, the steel angle is secured in a bending machine or fixture that can hold it securely in place during the bending process. The operator then determines the desired angle and bend radius, which determines the amount of force that needs to be applied. Next, the bending machine or fixture applies pressure to the steel angle, gradually bending it to the desired shape. The force is typically applied slowly and evenly to prevent any deformation or damage to the steel. During the bending process, it is important to monitor the angle and ensure that it is bending evenly and smoothly. The operator may need to make adjustments to the pressure or angle of the bending machine to achieve the desired shape. Once the steel angle has been bent to the desired angle, it is carefully removed from the bending machine or fixture. It is important to handle the bent angle with care to prevent any distortion or damage. Cold bending steel angles offers several advantages over hot bending, such as reduced risk of material distortion or weakening due to heat. It also allows for more precise and controlled bending, making it suitable for a wide range of applications where accuracy is crucial. Overall, the process of cold bending steel angles involves securely positioning the angle in a bending machine or fixture, applying gradual and controlled pressure to bend it to the desired shape, and carefully removing the bent angle for further use.

Q: What is the maximum length for a steel angle bracket?: The length of a steel angle bracket can differ based on the manufacturer and design. Typically, these brackets come in lengths ranging from 1 inch to 8 feet or greater. It should be noted that longer brackets may be susceptible to bending or flexing when subjected to heavy loads. Therefore, it is crucial to consider the intended use and weight-bearing specifications when choosing the suitable length for a steel angle bracket. Moreover, it is advisable to consult the manufacturer's guidelines and specifications to guarantee that the maximum length of the bracket is not surpassed, as this could jeopardize its structural integrity.

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