Hot Rolled Square Bar with High Quality of Grade Q235，Q275
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 3000 m.t.
- Supply Capability:
- 100000 m.t./month
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Product Description:
OKorder is offering Hot Rolled Square Bar with High Quality of Grade Q235，Q275 at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
Hot Rolled Square Bar with High Quality of Grade Q235，Q275 are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.
Product Advantages:
OKorder's Hot Rolled Square Bar with High Quality of Grade Q235，Q275 are durable, strong, and resist corrosion.
Main Product Features:
· Premium quality
· Prompt delivery & seaworthy packing (30 days after receiving deposit)
· Corrosion resistance
· Can be recycled and reused
· Mill test certification
· Professional Service
· Competitive pricing
Product Description:
-Standard: Q235 Q275
--Chemical Composition:
Standard | Grade | Element (%) | ||||
GB | Q235/275 | C | Mn | S | P | Si |
0.06~0.12 | 0.25~0.50 | ≤0.050 | ≤0.045 | ≤0.30 | ||
Measures of HR Square Bar (small measures):
(Section of HR Square Bar)
-Length of a side and Theoretical weight of Square Bar.
Length of a side(mm) | Theoretical weight(kg/m) | Length of a side(mm) | Theoretical weight(kg/m) |
7 | 0.385 | 22 | 3.80 |
8 | 0.502 | 24 | 4.52 |
9 | 0.636 | 25 | 4.91 |
10 | 0.785 | 26 | 5.30 |
11 | 0.950 | 28 | 6.15 |
12 | 1.13 | 30 | 7.06 |
13 | 1.33 | 32 | 8.04 |
14 | 1.54 | 34 | 9.07 |
15 | 1.77 | 36 | 10.17 |
16 | 2.01 | 38 | 11.24 |
17 | 2.27 | 40 | 12.56 |
18 | 2.54 | 42 | 13.85 |
19 | 2.82 | 45 | 15.90 |
20 | 3.14 | 48 | 18.09 |
21 | 3.46 | 50 | 19.63 |
Notes:
1, The theoretical weights in the list, base on the density of 7.85 g/cm3.
2, Formula for theoretical weight of Square bar: (length of a side)2 * 0.00785
3, The numbers with ＊mean that they are not regular or we don’t offer them.
-Regular length of Square Bar:
Steel | Length of a side (mm) | Length of steel (m) |
Normal steel | < 25 | 4~10 |
> 25 | 3~9 | |
Steel of high quality | All measure | 2~6 |
Tool steel >75 | 1~6 |
Usage/Applications of HR Square Bar:
-The Square Bar is normally used as structure steel.
-Row material for other structure steel like steel angles, channels, I-beams, H-beams, etc…
Packaging & Delivery of HR Square Bar:
-Packing Detail: The products can be packed in bundles by steel wires.
-Marks: We make tag marks and color marks. The tag marks with white background and red company logo will be tied up to each bundle of the products. The information is usually including basic information of products and company and other information requested by customers. As for color marks, we will paint both ends of bundles to make sure that it will be more convenient for customers to distinguish them from other products.
-Delivery Detail: 30~45 working days after receive buyer’s T.T. or L/C.
Transportation:
-The products can be delivered by bulk vessel or by container. As for container, products with the length of 6m will be loaded in 20’ container, with 9m or 12m, in 40’ container.
-The maximum quantity of loading of container is 25 tons.
-The products are usually transported to the nearest port from the production place.
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
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- Q: What are the specifications for tool steel billets used in the tooling industry?
- Tool steel billets used in the tooling industry typically have specific specifications to ensure optimal performance and durability. These specifications include: 1. Composition: Tool steel billets are made from specific alloy compositions that provide high hardness, wear resistance, and toughness. Common elements found in tool steel include carbon, chromium, vanadium, molybdenum, and tungsten. 2. Hardness: Tool steel billets are heat-treated to achieve a desired hardness level, typically measured in Rockwell hardness (HRC). The hardness required depends on the specific application and the type of tool being produced. 3. Size and shape: Tool steel billets come in various sizes and shapes, such as rectangular or round bars, to cater to different tooling requirements. The dimensions of the billets are chosen based on the size and complexity of the tool being manufactured. 4. Surface finish: Tool steel billets should have a smooth and clean surface finish to ensure easy machining and minimize the risk of defects or imperfections in the final tooling product. 5. Tolerance: The billets should be manufactured with tight dimensional tolerances to ensure consistency during the machining and tooling processes. This helps in achieving precise tool dimensions and minimizing wastage. 6. Homogeneity: Tool steel billets should have uniform chemical composition and microstructure throughout to ensure consistent mechanical properties and performance of the final tooling products. 7. Heat treatment properties: The billets should have good heat treatment properties, including the ability to be hardened and tempered, to enhance their strength, toughness, and wear resistance. 8. Machinability: Tool steel billets should have good machinability to allow for efficient shaping and forming processes during tool manufacturing. This includes considerations for cutting forces, chip formation, and surface finish. It is important to note that the specific specifications for tool steel billets can vary depending on the application and the type of tool being produced. Manufacturers and tooling experts often work closely together to determine the most suitable tool steel specifications for each specific tooling requirement.
- Q: What are the common surface treatments for steel billets?
- Steel billets can undergo several surface treatments to improve performance and protect against corrosion. Common treatments include: 1. Hot-dip galvanizing: Immersing billets in molten zinc creates a protective coating, offering excellent corrosion resistance for outdoor applications. 2. Electroplating: Passing an electric current through a metal ion solution deposits metals like nickel, chromium, or zinc onto billet surfaces, providing desired properties and appearance. 3. Powder coating: Spraying dry powder onto billet surfaces and heating it forms a durable, chemical-resistant coating. This method offers various color options and UV radiation protection. 4. Phosphating: Applying a phosphate coating improves corrosion resistance and promotes paint adhesion, suitable for subsequent painting or powder coating. 5. Blackening: Applying a chemical solution creates a black oxide layer, enhancing appearance and providing mild corrosion resistance for decorative purposes. 6. Passivation: Treating billets with an acid solution removes contaminants and creates a passive oxide layer, improving corrosion resistance, especially for stainless steel billets. These treatments are widely used in industries to enhance billet properties and lifespan. The choice depends on specific requirements, including application, appearance, and environmental conditions.
- Q: How are steel billets used in the manufacturing of chemical processing equipment?
- Steel billets are used in the manufacturing of chemical processing equipment as raw material for forging or casting various components such as valves, pumps, heat exchangers, and reactors. These billets are shaped, machined, and treated to meet the specific requirements of the equipment, ensuring strength, durability, and resistance to corrosion and high temperatures.
- Q: How do steel billets contribute to energy efficiency?
- Steel billets contribute to energy efficiency in several ways: 1. Production efficiency: Steel billets are the initial form of steel that is used in various manufacturing processes. By using steel billets as a starting material, manufacturers can achieve greater production efficiency. The uniform size and shape of billets allow for easier handling, cutting, and shaping, reducing energy consumption during the manufacturing process. 2. Resource optimization: Steel billets are typically made from recycled steel scrap. By using recycled steel as the raw material, manufacturers reduce the need for extracting and processing virgin iron ore, which is an energy-intensive process. This helps in conserving natural resources and reducing the overall energy consumption associated with steel production. 3. Heat recovery: During the manufacturing of steel billets, high temperatures are required to melt and shape the steel. However, modern steel plants are equipped with advanced technologies that allow for efficient heat recovery. The excess heat generated during the process can be captured and utilized for various purposes, such as generating steam or heating other areas of the plant. This heat recovery system helps to reduce energy wastage and increase overall energy efficiency. 4. Energy-efficient equipment: Steel billet production often involves the use of heavy machinery and equipment. Manufacturers are increasingly investing in energy-efficient technologies and equipment to reduce energy consumption. For example, using more efficient electric arc furnaces or induction heating systems can significantly reduce energy requirements compared to traditional methods. These advancements in technology contribute to the overall energy efficiency of steel billet production. Overall, steel billets play a crucial role in energy efficiency within the steel industry. From production efficiency to resource optimization and heat recovery, the use of steel billets helps in minimizing energy consumption and promoting a more sustainable steel manufacturing process.
- Q: What are the common alloys used in the production of steel billets?
- The common alloys used in the production of steel billets are carbon steel, stainless steel, and alloy steel.
- Q: What are the different types of steel billet reheating furnaces?
- There are several different types of steel billet reheating furnaces used in the metal industry. These furnaces are designed to heat steel billets to a specific temperature before they are further processed or shaped into various end products. The main types of steel billet reheating furnaces include: 1. Pusher Type Furnace: This type of furnace uses a pusher mechanism to move the billets through the furnace. The billets are loaded onto a roller conveyor and pushed into the furnace using mechanical pusher plates. As the billets move through the furnace, they are heated by the combustion gases or electrical heating elements. 2. Walking Beam Furnace: In a walking beam furnace, the billets are placed on a series of moving beams or skids. These beams move in a continuous loop, carrying the billets through the furnace. As the billets move, they are heated by the burners or electrical heating elements located above and below the beams. 3. Rotary Hearth Furnace: This type of furnace consists of a rotating hearth on which the billets are placed. The hearth rotates, bringing the billets through different temperature zones within the furnace. The billets are heated by the burners or electrical heating elements located above the hearth. 4. Continuous Furnace: A continuous furnace is a type of furnace where the billets are continuously fed into one end and discharged from the other end. The billets move through the furnace on a conveyor belt or roller conveyor, being heated by the combustion gases or electrical heating elements as they pass through. 5. Walking Hearth Furnace: In a walking hearth furnace, the billets are placed on a hearth that moves in a reciprocating motion. The hearth moves back and forth, bringing the billets through the furnace. The billets are heated by the burners or electrical heating elements located above and below the hearth. Each type of steel billet reheating furnace has its own advantages and is suitable for specific applications. The choice of furnace depends on factors such as the required heating capacity, the size and shape of the billets, the desired temperature profile, and the energy efficiency requirements.
- Q: What are the different methods of steel billet testing?
- In the industry, multiple methods are commonly used to test steel billets, aiming to evaluate their quality and integrity before further processing or use in construction. Among the various methods are: 1. Visual Inspection: The surface of the steel billet is visually examined to identify any visible defects like cracks, surface irregularities, or signs of damage. 2. Ultrasonic Testing: By emitting high-frequency sound waves into the billet and analyzing the reflected waves, internal defects or inconsistencies in the steel billet are detected. 3. Magnetic Particle Inspection: This method detects surface or near-surface defects by applying magnetic particles to the billet's surface. If there are any defects, the particles will be attracted, forming easily detectable visible indications. 4. Eddy Current Testing: Electromagnetic induction is utilized in this non-destructive testing method to identify surface or near-surface defects. Changes in the magnetic field caused by irregularities or defects in the billet are detected and analyzed. 5. Chemical Analysis: The chemical composition of the steel billet is analyzed to ensure it meets the required specifications. Techniques such as spectroscopy or wet chemistry methods are typically employed to determine the levels of various elements present. 6. Tensile Testing: A small sample of the steel billet is subjected to tension until it breaks, allowing for the determination of tensile strength and other mechanical properties. This test provides valuable information regarding the overall strength and durability of the billet. 7. Hardness Testing: The hardness of the steel billet, an important property for determining its suitability for specific applications, is measured. Various hardness testing methods like Rockwell, Brinell, or Vickers hardness tests can be used. Each testing method has its own advantages and limitations, and the choice of method depends on the specific requirements and quality standards of the steel billet under examination.
- Q: Are steel billets prone to cracking during production?
- Yes, steel billets are prone to cracking during production. Cracking can occur due to various factors such as improper cooling, excessive heating, or rapid cooling. The cooling process is crucial in the production of steel billets as it affects the microstructure and mechanical properties of the final product. If the cooling is not done properly, it can lead to the formation of internal stresses within the billet, which can result in cracking. Additionally, the presence of impurities or defects in the starting material can also contribute to cracking. Therefore, it is essential for manufacturers to closely monitor and control the production process to minimize the risk of cracking and ensure the quality of the steel billets.
- Q: What does the billet of the steel plant refer to?
- When rolling the long material, the square billet is poured, the rolled plate is cast, the rolling pipe is cast into round billet, and the rolled narrow strip steel is poured into the rectangular billet, etc..
- Q: What are the main challenges in the handling of steel billets during production?
- The handling of steel billets during production presents several challenges that need to be overcome for a smooth and efficient manufacturing process. One of the main challenges is the weight and size of the steel billets. Steel billets can be quite heavy, ranging from a few hundred kilograms to several tons, depending on their dimensions. This poses difficulties in terms of lifting and moving them within the production facility. Specialized equipment such as cranes and forklifts are required to handle these heavy loads safely. Another challenge is the potential for damage to the steel billets during handling. Steel billets are typically transported and stored in stacks or bundles. Improper handling techniques or insufficient protection can lead to deformation, scratches, or even breakage of the billets. These damages can affect the quality of the final product, leading to increased scrap rates and production costs. Additionally, maintaining precise temperature control is crucial during the handling of steel billets. Steel is sensitive to temperature changes, and the billets need to be kept within specific temperature ranges to avoid distortion or metallurgical issues. Special care must be taken when transferring billets between different areas of the production facility to ensure temperature consistency. Ensuring proper inventory management and tracking is also a challenge in billet handling. Steel billets are often stored in large warehouses or outdoor yards, and keeping track of their location, quantity, and quality can be complex. Efficient inventory management systems, such as barcoding or RFID tagging, are essential to minimize errors and efficiently retrieve the required billets for production. Lastly, safety is a significant concern when handling steel billets. The weight and potential for injury make it vital to follow strict safety protocols. Operators need to be properly trained on the use of equipment, such as cranes and forklifts, and wear appropriate personal protective equipment (PPE) to prevent accidents or injuries. Overall, the main challenges in the handling of steel billets during production revolve around their weight, potential for damage, temperature control, inventory management, and safety. Overcoming these challenges requires investments in specialized equipment, training, and efficient processes to ensure a smooth and successful production operation.
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Hot Rolled Square Bar with High Quality of Grade Q235，Q275
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 3000 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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