Hot Roll Square Steel Bar with Grade Q195 / Q235
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 5000 m.t.
- Supply Capability:
- 100000 m.t./month
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Product Description:
OKorder is offering Hot Roll Square Steel Bar with Grade Q195 / Q235 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 Roll Square Steel Bar with Grade Q195 / Q235 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 Roll Square Steel Bar with Grade Q195 / Q235 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 Specifications:
We offer Square Steel Bar with grade Q195 / Q235
Specifications of Square Steel Bar:
-Standard: GB,
-Grade: Q195/Q235 or equivalent.
Chemical Composition:
-Chemical Composition. Q195
Standard | Grade | Element (%) | ||||
GB | Q195 | C | Mn | S | P | Si |
0.06~0.12 | 0.25~0.50 | ≤0.050 | ≤0.045 | ≤0.30 | ||
-Chemical Composition. Q235
Standard | Grade | Element (%) | ||||
GB | Q235B | C | Mn | S | P | Si |
0.12~0.20 | 0.30~0.70 | ≤0.045 | ≤0.045 | ≤0.30 | ||
Measures and Tolerances of Square Steel Bar:
(The section of Square Steel Bar)
The length of a side and the theoretical weight of Square Steel.
Length of a side(a, mm) | Theoretical weight(kg/m) | Length of a side(a, mm) | Theoretical weight(kg/m) |
6 | 0.283 | 32 | 8.04 |
7 | 0.385 | ＊33 | 8.55 |
8 | 0.502 | 34 | 9.07 |
9 | 0.636 | ＊35 | 9.62 |
10 | 0.785 | 36 | 10.17 |
11 | 0.950 | 38 | 11.24 |
12 | 1.13 | 40 | 12.56 |
13 | 1.33 | 42 | 13.85 |
14 | 1.54 | 45 | 15.90 |
15 | 1.77 | 48 | 18.09 |
16 | 2.01 | 50 | 19.63 |
17 | 2.27 | 53 | 22.05 |
18 | 2.54 | ＊55 | 23.6 |
19 | 2.82 | 56 | 24.61 |
20 | 3.14 | ＊58 | 26.4 |
21 | 3.46 | 60 | 28.26 |
22 | 3.80 | 63 | 31.16 |
＊23 | 4.15 | ＊65 | 33.17 |
24 | 4.52 | ＊68 | 36.3 |
25 | 4.91 | 79 | 38.49 |
26 | 5.30 | 75 | 44.16 |
＊27 | 5.72 | 80 | 50.24 |
28 | 6.15 | 85 | 56.72 |
＊29 | 6.60 | 90 | 63.59 |
30 | 7.06 | 95 | 70.85 |
＊31 | 7.54 | 100 | 78.50 |
Notes:
1, The theoretical weights in the list, base on the density of 7.85 g/cm3.
2, The numbers with ＊mean that they are not regulars or we don’t offer them
-The allowed tolerance of Square Steel:
Length of a side(mm) | Allowed Tolerance | ||
Group1 | Group2 | Group3 | |
5.5～7 | ±0.20 | ±0.30 | ±0.40 |
7～20 | ±0.25 | ±0.35 | ±0.40 |
20～30 | ±0.30 | ±0.40 | ±0.50 |
30～50 | ±0.40 | ±0.50 | ±0.60 |
60～80 | ±0.60 | ±0.70 | ±0.80 |
80～110 | ±0.90 | ±1.0 | ±1.1 |
110～150 | ±1.2 | ±1.3 | ±1.1 |
150～190 | ―― | ―― | ±2.0 |
190～250 | ―― | ―― | ±2.5 |
Usage/Applications of Steel Square Bar:
-The Square Steel is normally used as structure steel.
-Row material for other structure steel like steel angles, channels, I-beams, H-beams, etc
Packaging & Delivery of Steel Square Bar:
-Packing Detail: The products can be packed in bundles by steel wires.
-Marks:
1, Tag marks: the tag marks will be tied up to each bundle of the products. The information is usually including supplier’s logo and name, product name, made in China, products’ specifications, the painted color and other information requested by customers.
2, Color marks: we will paint both ends of the bundles of these products to make sure that they are more evident. It’s will be more convenient for the customers to distinguish them at the destination port.
-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 usually are transported to the nearest port from the production place.
Payment:
-Invoicing on theoretical weight or actual weight a s customer’s request.
-FOB, CFR or CIF.
-Regular terms of payment:
1, 30% payment in advance, the remaining balance (70% payment) against the copy of B/L.
2, 30% payment in advance, the remaining balance (70% L/C) against the copy of B/L.
3, Negotiable.
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.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
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.
- Q: What are the different methods of steel billet inspection?
- The manufacturing industry commonly uses various methods to inspect steel billets, ensuring their quality and integrity before further processing. These methods include: 1. Visual Inspection: Trained inspectors visually examine the billets for surface defects like cracks, pits, or irregularities. This serves as an initial screening process before employing more advanced techniques. 2. Ultrasonic Testing: High-frequency sound waves are used to detect internal defects or inconsistencies within the billets. A transducer emits sound waves into the billet, and the reflected waves are analyzed to identify flaws like voids, inclusions, or cracks. 3. Magnetic Particle Inspection: This method is useful for detecting surface and near-surface defects. It involves applying a magnetic field to the billet and then applying iron particles. These particles cluster around any magnetic leakage caused by surface cracks or defects, making them easily visible. 4. Eddy Current Testing: This non-destructive method detects surface and near-surface defects in conductive materials. An alternating current is passed through a coil, creating an electromagnetic field. Changes in the electromagnetic field caused by surface defects are detected and analyzed to identify flaws. 5. X-ray Inspection: X-rays are passed through the billet, capturing the resulting image on film or a digital detector. This method effectively detects both internal and external defects such as cracks, voids, inclusions, or segregation. These are just a few of the commonly used methods for inspecting steel billets. The choice of technique depends on factors like the type of defect, billet size and shape, and specific product requirements. By combining these methods, manufacturers can ensure the quality and reliability of their steel billets.
- Q: What are the common defects in steel billets during hot rolling?
- Some common defects in steel billets during hot rolling include surface cracks, internal cracks, surface scales, segregation, and surface defects such as pits, scars, and scratches. These defects can affect the quality and integrity of the final product and may require further processing or rejection of the billets.
- Q: What is the price range of steel billets?
- The price of steel billets can fluctuate due to several factors, including steel quality, market demand, and global steel prices. Typically, the price range for steel billets spans from $300 to $600 per metric ton. Nevertheless, it is crucial to recognize that these prices are susceptible to changes and may vary over time. For the most precise and current pricing details, it is advisable to seek guidance from steel suppliers or industry professionals.
- Q: How are steel billets used in the manufacturing of shipbuilding components?
- The manufacturing of shipbuilding components relies heavily on steel billets, which are indispensable raw materials. These components, including hulls, decks, bulkheads, and other structural parts, are crucial for ship construction. To begin the process, steel billets are heated in a furnace to a specific temperature, rendering them malleable. This crucial step, known as hot rolling, allows the billets to be shaped into the desired forms and sizes required for shipbuilding components. In addition to shaping, hot rolling also enhances the mechanical properties of the steel, making it stronger and more durable. Once the billets are heated and shaped, they undergo further processing through various techniques such as forging, extrusion, or casting, depending on the specific shipbuilding components needed. For instance, steel billets can be forged to create large and intricate parts like ship propellers or rudders. Extrusion, on the other hand, is employed to form long and continuous shapes like shipbuilding beams or pipes. Casting is utilized for intricate components such as engine parts or valves. Following the initial shaping process, the steel components go through various finishing operations including machining, welding, and surface treatment. Machining ensures the achievement of precise dimensions and smooth surfaces necessary for the proper fitting and functioning of shipbuilding components. Welding is employed to join different steel components together, ensuring structural integrity and strength. Surface treatment techniques such as painting or galvanizing are applied to protect the components from corrosion and extend their lifespan. Overall, steel billets are of utmost importance in shipbuilding as they serve as the essential raw material for manufacturing a wide range of components. Their versatility, strength, and durability make them ideal for constructing ships that can withstand the harsh marine environment. By utilizing steel billets along with advanced manufacturing techniques, high-quality shipbuilding components that adhere to stringent industry standards can be produced.
- Q: How are steel billets used in the manufacturing of pipes?
- Pipes cannot be manufactured without steel billets, which are indispensable in this process. These semi-finished products made of steel act as the raw material for pipe production. The initial step involves selecting top-notch steel and melting it in a furnace to form molten steel alloy. After the steel has melted, it is poured into molds of specific sizes and shapes to create billets. These billets then undergo a cooling and solidification process. By solidifying, the steel achieves the desired structural properties, including strength and durability. Once the steel billets have cooled down, they undergo further processing to become seamless or welded pipes. In the case of seamless pipes, the billets are heated and pierced to form a hollow tube-like structure. These pierced billets are then elongated and stretched to achieve the desired diameter and thickness of the pipe. This technique, known as hot-rolling, results in seamless pipes with consistent dimensions and improved mechanical properties. On the other hand, welded pipes are manufactured using different methods. One common method is the electric resistance welding (ERW) process. It involves heating the billets and passing them through a series of rollers to shape them into a cylindrical form. The edges of the billets are then fused together using an electric current, creating a continuous weld. Other welding techniques, such as submerged arc welding (SAW) and high-frequency induction welding (HFIW), can also be employed to manufacture welded pipes from steel billets. In both seamless and welded pipe manufacturing, the quality of the steel billets is of utmost importance. It directly impacts the integrity and performance of the final product. The appropriate selection of steel grades and strict adherence to manufacturing standards are vital to produce pipes that can withstand high pressure, extreme temperatures, and corrosive environments. To sum up, steel billets are essential in the pipe manufacturing process. They act as the starting material for pipes, whether through the hot-rolling technique for seamless pipes or various welding methods for welded pipes. Utilizing high-quality steel billets and employing precise manufacturing processes allow for the production of pipes with the necessary strength, durability, and dimensional accuracy required for a wide range of industrial and commercial applications.
- Q: How do steel billets contribute to the construction industry?
- Steel billets contribute to the construction industry by serving as the raw material for various steel products used in construction. These billets are transformed into beams, columns, rods, and other structural components that provide strength, stability, and durability to buildings and infrastructure. Additionally, steel billets are used in the manufacturing of reinforcements for concrete, enhancing the structural integrity of concrete structures such as bridges, highways, and buildings. Overall, steel billets play a crucial role in the construction industry by providing the necessary materials for safe and reliable structures.
- Q: How do steel billets contribute to the manufacturing of packaging materials?
- Steel billets are used in the manufacturing of packaging materials as they provide the necessary strength and durability required to create sturdy and long-lasting packaging products. The steel billets are melted and formed into various shapes and sizes, which are then used to create packaging containers, cans, and other materials. These packaging materials are essential for safely storing and transporting goods, protecting them from external elements and ensuring their integrity throughout the supply chain.
- Q: What are the common grades of steel used for billets?
- The common grades of steel used for billets vary depending on the intended application and specific requirements. However, some of the most commonly used grades include: 1. Carbon Steel: Carbon steel billets are widely used due to their high strength, durability, and affordability. Grades such as AISI 1018, 1020, 1045, and 1060 are commonly used for general-purpose applications. 2. Alloy Steel: Alloy steel billets are blended with specific alloying elements to enhance their mechanical properties such as strength, toughness, and corrosion resistance. Grades like AISI 4140, 4340, and 8620 are commonly used for applications requiring higher strength, heat resistance, or wear resistance. 3. Stainless Steel: Stainless steel billets are chosen for their excellent corrosion resistance and aesthetic appeal. Grades such as 304, 316, and 420 are commonly used for various applications, including construction, automotive, and food processing industries. 4. Tool Steel: Tool steel billets are specifically designed to have high hardness, wear resistance, and toughness. Grades such as AISI O1, D2, and A2 are commonly used for manufacturing cutting tools, dies, and molds. It is important to note that the selection of the appropriate grade of steel depends on the specific requirements of the application, such as mechanical properties, corrosion resistance, and temperature resistance. Consulting with a metallurgist or an expert in the field can help determine the most suitable grade of steel for billet production.
- Q: How are steel billets used in the manufacturing of pressure vessel components?
- Steel billets are used in the manufacturing of pressure vessel components by being melted and formed into the desired shape through processes like casting, forging, or extrusion. These billets serve as the raw material for creating various components such as shells, heads, and nozzles, which are then further processed, machined, and assembled to construct the pressure vessel.
- Q: What are the common defects in billet? What's the cause?
- 4. Tungsten inclusion;Six, arc scratch and heat crack and overlap: 1:Two reheat cracks 3 cracks
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Hot Roll Square Steel Bar with Grade Q195 / Q235
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 5000 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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