Hot rolled steel coil for construction GB Q345B

Hot rolled steel coil for construction GB Q345B System 1

Hot rolled steel coil for construction GB Q345B

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Product Description

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1.Description of Prepainted Galvanized Steel Coil and Color Coated Galvanized Steel Coil：

1).uses hot dip galvanized metal strip as the base material
2).zinc layer protection, dope on the zinc layer can cover and protect metal strip from rust

3). color coated sheet is light, beautiful and has good anti-erosion performance

4). can be further processed directly, corrugated or formed etc.
5). life span of PPGI is usually 1.5 times longer than that of galvanized steel coil
6). they are mainly applied for construction, decoration, roofing title, wall panel,

furniture, transportation and other industries
7).as a rich experience manufacturer, we provide quality product, competitive price and reliable after-sales service.

2.Specifications of Prepainted Galvanized Steel Coil and Color Coated Galvanized Steel Coil:

1).usage: home appliance manufacturing, decoration and building, special for manufacturing washing machinery, water heater and refrigerator.

2).grade:SGCC(DX51D-Z),SPCC,SPCD,SPCE

3).paint material: Normal polyester(PE, Epoxy)

4).thickness of top coating:20-25um,Thickness of back coating:7-10um

5).package method: Vertical/Horizontal, full wrapped with anti-moist paper inside, iron sheet wrapped outside, and bundled by iron strips

3.Prepainted Galvanized Steel Coil and Color Coated Galvanized Steel Coil Images:

4.Prepainted Galvanized Steel Coil and Color Coated Galvanized Steel Coil Specification:

Grade	Q195,SPCC,SGCC
Standard	GB
Base Plate	cold coil
Coil ID	506mm 508mm
Coil weight	3-8tons(as required)
Thickness	0.2-5.0mm
Width	1000mm-1600mm
Surface processing	galvanized,galvalume,color coating
Product Feature	good performance, highly precise, high straightness, high evenness and surface finishing, uniform thickness, easy for coating process, high tensile strength, high pressing property and low yield point.
packing	Standard export packing. or according to customer's requirements.
Delivery Time	25 days after received your deposite
Application	Building material,roofing,household appliance,tube making,construction
Advantages	1. Expert:Many years’ experience producing and trading on steel coil, cater to customers’ specific needs

	2. Price:competitive factory price

5.PACKING:

6.FAQ

We have organized several common questions for our clients，may help you sincerely：

①How about your company？

A world class manufacturer & supplier of castings forging in carbon steel and alloy steel，is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirement.

②How to guarantee the quality of the products？

We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

③How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers.Commonly 7 to 10 working days can be served.

Hot rolled steel coil for construction GB Q345B

Q:How is the steel wire rod market affected by changes in trade policies?: The steel wire rod market can be significantly affected by changes in trade policies. Tariffs or quotas, for example, have the power to influence supply and demand dynamics, production costs, and the competitiveness of steel wire rod producers. When tariffs are imposed on steel wire rod imports, it becomes more expensive for domestic manufacturers to source raw materials, as the cost of importing the product increases. Consequently, the price of steel wire rod in the domestic market may rise, impacting the profitability of manufacturers and potentially reducing demand. Conversely, if tariffs are placed on steel wire rod exports, it limits the market access for domestic manufacturers, which in turn reduces their ability to sell their products internationally and potentially affects their revenue. Quotas on steel wire rod imports can also have a significant impact on the market. By limiting the quantity of imported steel wire rod that can enter the domestic market, quotas can cause a decrease in supply, potentially resulting in a shortage and driving up prices. Similarly, if quotas are imposed on steel wire rod exports, it may restrict the ability of domestic manufacturers to access international markets, thus reducing their market reach and potentially affecting their profitability. Furthermore, trade policies can impact the competitiveness of domestic steel wire rod producers. If trade policies favor domestic producers by imposing higher tariffs on imports, it provides them with a competitive advantage by making imported steel wire rod more expensive. This, in turn, can encourage domestic production and potentially lead to increased investment in the industry. Conversely, if trade policies favor imports by imposing higher tariffs on exports, it can hinder the competitiveness of domestic producers, making it challenging for them to compete in international markets. In conclusion, changes in trade policies can have both positive and negative impacts on the steel wire rod market. The extent of these impacts depends on the specific trade policies implemented and the reactions of market participants.

Q:What are the common applications of high carbon steel wire rod?: Due to its distinct qualities, high carbon steel wire rod is widely used for various purposes. One prominent use is in the manufacturing of springs, which are commonly found in automotive suspension systems and industrial machinery. The wire rod's high carbon content gives it exceptional strength and durability, allowing it to endure the constant stress and tension experienced by springs. Another prevalent application is in the production of wire ropes and cables. High carbon steel wire rod is highly favored for this purpose due to its remarkable tensile strength, enabling it to bear heavy loads and resist deformation. Wire ropes and cables made from high carbon steel wire rod are extensively utilized in the construction, mining, and transportation industries. Piano wire manufacturing is another significant utilization of high carbon steel wire rod. The wire's high strength and outstanding resilience make it an ideal choice for producing piano strings that can withstand the tension and vibration needed to produce the desired musical notes. Moreover, high carbon steel wire rod is frequently employed in the production of wire mesh and wire fencing. Its strength and durability make it suitable for creating fences and enclosures that offer security and containment in diverse settings, including residential, agricultural, and industrial areas. In conclusion, high carbon steel wire rod is commonly used in the production of springs, wire ropes and cables, piano wire, and wire mesh or fencing. Its unique properties make it the preferred choice for these applications, providing strength, durability, and the ability to withstand tension and stress.

Q:How is steel wire rod used in the manufacturing of wire for suspension cables?: Steel wire rod is a crucial component in the manufacturing of wire for suspension cables as it serves as the primary raw material. The steel wire rod is first drawn through a series of dies to reduce its diameter and increase its strength. This process, known as wire drawing, helps create the desired thickness and tensile strength required for suspension cables. The drawn wire is then further processed, usually through stranding or twisting, to form multiple strands, which are then combined to create the final suspension cable. The high strength and durability of steel wire rod make it an ideal material for suspension cables, ensuring the cables can safely support heavy loads and withstand the environmental stresses they will encounter.

Q:What are the different types of testing conducted on steel wire rod?: There are several types of testing conducted on steel wire rod to ensure its quality and suitability for various applications. These tests include: 1. Chemical Analysis: This test determines the composition of the steel wire rod, including the percentage of various elements such as carbon, manganese, sulfur, phosphorus, and others. It helps to ensure that the wire rod meets the required specifications and standards. 2. Tensile Testing: This test measures the strength and elasticity of the steel wire rod. It involves applying a gradually increasing load to the rod until it breaks, and then analyzing the stress-strain relationship. Tensile testing helps to determine the ultimate tensile strength, yield strength, and elongation of the wire rod, which are crucial factors in assessing its quality. 3. Hardness Testing: This test measures the resistance of the steel wire rod to indentation or scratching. Different techniques like Brinell, Rockwell, or Vickers hardness tests are used to determine the hardness value. Hardness testing provides valuable information about the wire rod's ability to withstand wear, deformation, or penetration, which is essential in determining its suitability for specific applications. 4. Microstructure Analysis: Microscopic examination of the steel wire rod is conducted to assess its internal structure and grain size. This analysis helps to identify any defects, irregularities, or inclusions within the rod that could affect its strength, ductility, or other mechanical properties. 5. Ultrasonic Testing: This non-destructive testing technique uses high-frequency sound waves to detect any internal flaws or defects within the steel wire rod. It helps to identify issues such as cracks, voids, or inclusions that may compromise the rod's integrity or performance. 6. Dimensional Inspection: This test ensures that the steel wire rod meets the required dimensional specifications, such as diameter, length, straightness, and surface finish. Measurement tools like calipers, micrometers, or laser-based devices are used to verify these dimensions accurately. 7. Surface Quality Assessment: Various visual or non-destructive techniques are employed to inspect the surface of the steel wire rod for any surface defects, such as scratches, pits, scales, or corrosion. These assessments help to ensure that the rod has a smooth and defect-free surface, which is crucial for its performance and appearance in different applications. These different types of testing provide a comprehensive evaluation of the steel wire rod's chemical composition, mechanical properties, microstructure, dimensions, and surface quality. By conducting these tests, manufacturers and users can ensure that the wire rod meets the required standards and specifications, guaranteeing its quality and reliability in various industries, including construction, automotive, manufacturing, and others.

Q:How does the coating affect the performance of steel wire rod?: The coating on steel wire rod can have a significant impact on its performance. Firstly, the coating provides protection against corrosion, which is crucial for wire rod that is exposed to moisture or harsh environments. This protection ensures that the wire rod maintains its strength and durability over time, reducing the risk of premature failure. Additionally, the coating can improve the lubricity of the wire rod, making it easier to handle and reducing friction during processing. This can result in smoother wire drawing operations, reducing the risk of surface defects or breakages. The coating can also enhance the bonding properties of the wire rod, particularly when it is used for applications such as welding or concrete reinforcement. A well-applied coating can promote better adhesion to other materials, ensuring the wire rod functions effectively in these applications. Furthermore, the coating can provide insulation properties, making the wire rod suitable for electrical or electronic applications. It can prevent the wire rod from conducting electricity, reducing the risk of short circuits or electrical malfunctions. Overall, the coating on steel wire rod plays a crucial role in protecting, enhancing, and optimizing its performance in various applications. It ensures durability, improves handling, enhances bonding properties, and provides insulation as needed. Therefore, selecting the appropriate coating for specific applications is essential to achieve optimal performance and longevity of steel wire rod.

Q:What are the different types of steel wire rod surface defects and their causes?: During the manufacturing process, various surface defects can occur on steel wire rods. These defects have the potential to impact the quality and performance of the wire rods. Some commonly observed surface defects include: 1. Scale: Scale refers to a flaky and rough layer of surface oxide formed during the hot rolling process. Inadequate descaling or insufficient temperature control during rolling can lead to the formation of scale. 2. Surface cracks: Surface cracks are visible fractures or fissures that develop on the wire rod's surface. These cracks can be attributed to factors such as improper cooling, excessive strain during rolling, impurities, or contaminants in the steel. 3. Pits: Pits are small depressions or cavities on the surface of the wire rod. Their occurrence can be traced back to the presence of inclusions or impurities in the steel, inadequate descaling, or improper cooling. Pits can negatively affect the wire rod's mechanical properties and fatigue resistance. 4. Slivers: Slivers are thin and elongated metal pieces loosely attached to the wire rod's surface. They can be caused by equipment defects in the rolling mill or by the presence of impurities in the steel. Slivers can result in surface roughness and can also cause issues during subsequent processing or usage of the wire rod. 5. Scratches: Scratches are visible marks or grooves on the wire rod's surface. They can occur during handling, transportation, or processing. Scratches not only diminish the wire rod's aesthetic appeal but can also create stress concentrations, impacting its mechanical properties. The causes of these surface defects are often linked to the manufacturing process and the quality of the raw materials used. Improper temperature control, inadequate descaling, excessive strain, impurities in the steel, and equipment malfunctions are all contributing factors. To minimize these defects and ensure the production of high-quality wire rods, it is crucial to implement proper quality control measures. This includes regular inspections, adequate cleaning and descaling processes, and maintaining appropriate rolling parameters.

Q:What are the common applications of alloy steel wire rod?: Due to its unique properties and characteristics, alloy steel wire rod finds a wide range of applications. Some of the common uses of alloy steel wire rod include: 1. In the automotive industry, alloy steel wire rod is extensively utilized for producing various components like springs, suspension systems, wheel rims, and engine parts. Its high strength and durability enable it to withstand demanding conditions and loads experienced by these components. 2. The construction industry also heavily relies on alloy steel wire rod. It is employed in manufacturing reinforcing bars (rebars) necessary for strengthening concrete structures such as bridges, buildings, and highways. The high tensile strength and corrosion resistance of the wire rod ensure the longevity and structural integrity of these constructions. 3. Alloy steel wire rod finds applications in various manufacturing processes like welding, machining, and fabrication. It is commonly used for producing fasteners, wire mesh, wire ropes, and springs. The exceptional properties of alloy steel, including high tensile strength, good formability, and resistance to wear and fatigue, make it an ideal choice for these manufacturing applications. 4. In the aerospace industry, alloy steel wire rod is employed for producing components and parts that require high strength, excellent fatigue resistance, and the ability to withstand extreme temperatures. This includes aircraft landing gear, engine components, and structural parts. The superior mechanical properties of alloy steel wire rod make it suitable for withstanding the demanding conditions encountered in aerospace applications. 5. The energy industry also utilizes alloy steel wire rod for various purposes. It is used in manufacturing power transmission cables, electrical conductors, and wire mesh screens. The high electrical conductivity and corrosion resistance of alloy steel wire rod make it an ideal choice for these energy-related applications. In conclusion, due to its high strength, durability, formability, and resistance to wear, corrosion, and fatigue, alloy steel wire rod is commonly used in the automotive, construction, manufacturing, aerospace, and energy industries. Its versatility and unique properties make it an essential material for a wide range of applications.

Q:What are the main factors influencing the choice of steel wire rod order lead time?: The main factors influencing the choice of steel wire rod order lead time are demand and supply dynamics, production capacity, transportation logistics, and customer requirements. Firstly, demand and supply dynamics play a significant role in determining the lead time for steel wire rod orders. If there is high demand for steel wire rod products, manufacturers may have longer lead times due to increased production requirements and limited availability of raw materials. Conversely, during periods of low demand, lead times may be shorter as manufacturers can allocate resources more efficiently. Production capacity is another crucial factor. The lead time for steel wire rod orders depends on the production capacity of the manufacturer. If a manufacturer has limited production capacity, it may take longer to fulfill orders, resulting in longer lead times. On the other hand, manufacturers with larger production capacities can process orders more quickly, leading to shorter lead times. Transportation logistics also influence the choice of lead time for steel wire rod orders. If the manufacturer is located far from the customer or if there are logistical challenges, such as limited transportation options or customs clearance delays, the lead time may be longer. Efficient transportation networks and streamlined logistics processes can help reduce lead times. Additionally, customer requirements play a role in determining the lead time for steel wire rod orders. Some customers may have specific delivery deadlines or urgent requirements that need to be met. In such cases, manufacturers may prioritize these orders and provide shorter lead times to ensure customer satisfaction. Conversely, if customers have more flexible timelines, manufacturers may allocate resources to orders with shorter lead times. In conclusion, the main factors influencing the choice of steel wire rod order lead time include demand and supply dynamics, production capacity, transportation logistics, and customer requirements. Manufacturers need to consider these factors to determine an appropriate lead time that balances customer needs with operational capabilities.

Q:What are the common production processes for carbon-coated steel wire rod?: Some common production processes for carbon-coated steel wire rod include wire drawing, cleaning and coating the steel rod with carbon, annealing to improve its strength and flexibility, and finally, cutting the rod into desired lengths.

Q:What are the specifications for steel wire rod used in offshore wire strands?: The specifications for steel wire rod used in offshore wire strands are typically determined by industry standards and regulations. These specifications are designed to ensure the safety and reliability of the wire strands used in offshore applications. Some of the key specifications for steel wire rod used in offshore wire strands include: 1. Material composition: The steel wire rod used in offshore wire strands should be made from high-quality carbon steel or alloy steel. The material composition should meet specific requirements in terms of strength, durability, and corrosion resistance. 2. Tensile strength: The wire rod should have a high tensile strength to withstand the heavy loads and stresses experienced in offshore environments. The required tensile strength may vary depending on the specific application and project requirements. 3. Diameter and tolerance: The wire rod should have a specific diameter and tolerance to ensure compatibility with the wire strand manufacturing process. The diameter and tolerance may vary depending on the wire strand design and application. 4. Surface finish: The wire rod should have a smooth surface finish to facilitate proper adhesion and bonding with the surrounding materials, such as resin or protective coatings. The surface finish should also be free from any defects, such as cracks or scratches, which could compromise the performance of the wire strand. 5. Corrosion resistance: Offshore environments are exposed to harsh conditions, including saltwater, moisture, and corrosive elements. Therefore, the steel wire rod used in offshore wire strands should have excellent corrosion resistance properties to prevent degradation and maintain structural integrity over time. 6. Certified testing and quality control: The wire rod should undergo rigorous testing and quality control measures to ensure compliance with industry standards and specifications. This may include testing for mechanical properties, chemical composition, surface finish, and corrosion resistance. It is important to note that the specific specifications for steel wire rod used in offshore wire strands may vary depending on the project requirements, industry standards, and local regulations. Therefore, it is essential to consult the relevant codes and standards applicable to the specific offshore application to determine the exact specifications for the wire rod.

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