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
You Might Also Like
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.
Image:
- Q: How are steel billets classified based on their chemical composition?
- Steel billets can be classified based on their chemical composition using different grading systems. One common classification method is based on the carbon content of the billets. This method categorizes steel billets into three main groups: low carbon steel billets, medium carbon steel billets, and high carbon steel billets. Low carbon steel billets typically have a carbon content of less than 0.25%. These billets are known for their excellent ductility and weldability. They are commonly used in applications that require good formability and low strength, such as construction materials and automotive components. Medium carbon steel billets usually have a carbon content ranging from 0.25% to 0.60%. These billets have improved strength and hardness compared to low carbon steel billets. They are commonly used in applications that require higher strength, such as machinery parts, shafts, and gears. High carbon steel billets have a carbon content greater than 0.60%. These billets are known for their exceptional strength and hardness. They are commonly used in applications that require high wear resistance, such as cutting tools, springs, and knives. Apart from the carbon content, other chemical elements present in the steel billets can also affect their classification. For example, the presence of alloying elements like chromium, nickel, and molybdenum can enhance the properties of the steel, such as corrosion resistance or heat resistance. Steel billets can be further classified based on the specific alloying elements present and their concentrations. Overall, the classification of steel billets based on their chemical composition allows for better understanding and selection of the appropriate material for specific applications, ensuring the desired properties and performance of the final product.
- Q: What are the potential applications of steel billets in the textile industry?
- The textile industry can benefit from the wide range of potential applications offered by steel billets. One major area where steel billets prove useful is in manufacturing textile machinery components. Gears, shafts, and frames, crucial for the smooth functioning of textile machines, can be produced using steel billets. These components require high strength and durability, which steel billets provide to withstand the demanding operational conditions in the textile industry. Another application of steel billets in the textile industry is the production of molds and dies. By machining steel billets into intricate shapes, molds and dies can be created for fabricating textile products. Injection molding and extrusion processes, commonly used in textile manufacturing, rely on these molds and dies. Steel billets offer dimensional stability and resistance to wear and tear, making them ideal for producing long-lasting molds and dies. Moreover, steel billets can be employed in constructing textile production facilities. Steel, being versatile and strong, can be easily shaped and welded, making it suitable for building textile industry infrastructure. Steel billets can be used to fabricate support structures, frames, and beams for textile factories. These structures provide stability and strength to the buildings, ensuring the safe and efficient operation of textile production processes. Additionally, steel billets find applications in the packaging of textile products. Steel drums and containers, manufactured using steel billets, are commonly used for storing and transporting textiles. Steel drums offer excellent durability, protection against external factors, and resistance to damage during handling and transportation. In summary, the potential applications of steel billets in the textile industry are diverse and encompass various aspects of textile manufacturing, including machinery production, mold and die fabrication, construction, and packaging. Utilizing steel billets in these applications contributes to the efficiency, reliability, and quality of textile production processes.
- Q: What are the different surface defects in steel billets?
- Some common surface defects in steel billets include cracks, scars, pits, surface roughness, and scale.
- Q: How are steel billets priced in the market?
- Steel billets are typically priced in the market based on various factors such as supply and demand dynamics, production costs, and market conditions. The pricing is influenced by factors such as raw material costs, energy prices, transportation costs, and any applicable taxes or duties. Additionally, market participants consider factors like global economic trends, industry forecasts, and geopolitical events that may impact the overall steel market. Ultimately, steel billet pricing is determined through negotiations between buyers and sellers based on these various factors.
- Q: What is the chemical composition of steel billets?
- The chemical composition of steel billets typically consists of iron as the primary element, along with varying amounts of carbon, manganese, silicon, sulfur, and phosphorus. The exact composition may vary depending on the specific grade and intended use of the steel billets. Carbon is usually present in small amounts, typically ranging from 0.02% to 0.5%, as it helps to increase the strength and hardness of the steel. Manganese is often added to improve the toughness and hardenability of the steel, while silicon helps in deoxidizing the metal and enhancing its strength. Sulfur and phosphorus are impurities that are typically kept at low levels, as they can negatively affect the mechanical properties of the steel. Additionally, small amounts of other elements such as chromium, nickel, and molybdenum may be added to enhance specific properties of the steel, such as corrosion resistance or high-temperature strength.
- Q: How are steel billets used in the manufacturing of marine components?
- Steel billets are an essential raw material used in the manufacturing of marine components due to their strength, durability, and versatility. Steel billets are essentially semi-finished steel products that are cast into a specific shape, usually a square or a rectangle, through a process called continuous casting. These billets then serve as the starting point for various marine components. One of the main ways steel billets are used in the manufacturing of marine components is through the process of hot rolling. Hot rolling involves heating the steel billet to high temperatures and then passing it between a series of rollers to shape it into the desired form. This can include forming the billet into rods, bars, beams, or other structural shapes that are commonly used in marine applications. Steel billets are also used in the manufacturing of marine components through the process of forging. Forging involves heating the billet to high temperatures and then applying pressure to shape it into the desired form. This process is commonly used to manufacture marine components such as propeller shafts, crankshafts, and other high-strength parts that require precise shaping and superior mechanical properties. Additionally, steel billets can be used in the manufacturing of marine components through the process of machining. Machining involves removing material from the billet using various cutting tools to create complex shapes and features. This process is commonly used to manufacture marine components such as valves, fittings, and other precision parts that require tight tolerances and intricate designs. In summary, steel billets play a crucial role in the manufacturing of marine components. Their strength, durability, and versatility make them an ideal raw material for producing various marine parts through processes such as hot rolling, forging, and machining. By using steel billets, manufacturers can ensure that the marine components they produce are capable of withstanding the harsh conditions and demanding requirements of the marine environment.
- Q: How to calculate the cost price of billet?
- That depends on what kind of material you are producing steel billet, and are generally the city's iron ore came.
- Q: What are the main factors affecting the weldability of steel billets?
- The main factors affecting the weldability of steel billets include the composition of the steel, the presence of impurities, the presence of alloying elements, the size and shape of the billets, and the heat treatment of the steel.
- Q: What are the different methods of steel billet cutting?
- There are several common methods for cutting steel billets, including sawing, shearing, abrasive cutting, and flame/plasma cutting. Sawing involves using a high-speed circular saw blade to cut through the billet, while shearing involves using a guillotine-like tool to apply a shearing force and cut the billet. Abrasive cutting utilizes a high-speed abrasive wheel to grind through the steel, and flame or plasma cutting involves using a focused flame or plasma arc to melt and cut the billet. Each method has its own advantages and disadvantages depending on the specific requirements of the project.
- Q: What are the different methods of surface cleaning for steel billets?
- Steel billets can be cleaned using various methods, each with its own benefits and applications. Let's explore these methods: 1. Shot Blasting: By propelling steel shots or grits at high speeds onto the billet surface, shot blasting effectively eliminates rust, mill scale, and other impurities, leaving behind a clean and textured surface. This technique is commonly employed to prepare billets for subsequent processes like painting or coating. 2. Acid Pickling: Acid pickling involves immersing the billets in an acid bath, typically hydrochloric or sulfuric acid. The acid reacts with surface oxides and scales, dissolving them and resulting in a clean surface. Acid pickling can remove a wide range of contaminants, but it must be carefully controlled to prevent hydrogen embrittlement. 3. Mechanical Cleaning: Mechanical cleaning techniques employ abrasive tools or equipment to physically scrub or scrape the billet surface. Wire brushes, abrasive pads, or sandpaper can be used to eliminate loose rust, scale, and dirt. This method is suitable for small-scale or localized cleaning but may be time-consuming for larger surfaces. 4. Water Jetting: Water jetting employs a high-pressure water stream to remove dirt, rust, and other contaminants from billet surfaces. The force of the water effectively eliminates loose debris without damaging the underlying steel. Water jetting is an environmentally friendly method that does not involve chemicals and is commonly used for light cleaning or maintenance purposes. 5. Chemical Cleaning: Chemical cleaning utilizes specialized chemicals or solutions to dissolve or neutralize contaminants on the billet surface. This method can be effective in removing stubborn stains, oils, or specific types of corrosion. However, careful selection and handling of chemicals are necessary to avoid any adverse effects on the steel or the environment. 6. Electrochemical Cleaning: Electrochemical cleaning, also known as electrolytic cleaning or electrocleaning, employs an electric current to remove surface contaminants. The billets are immersed in an electrolyte solution, and the application of an electric current causes the contaminants to dissolve or deposit onto an electrode. This method is particularly effective for removing organic contaminants or for precision cleaning. Each method possesses its own advantages and limitations. The choice of the appropriate surface cleaning method for steel billets depends on factors such as the type and severity of contamination, desired surface finish, and specific requirements of subsequent processes.
Send your message to us
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
Similar products
Hot products
Hot Searches
Related keywords
