High grade hot rolled narrow strip steel
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 5000 m.t./month
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Definition
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Strip steel
The strip generally supplied in rolls, has the advantages of high size precision,good surface quality, easy processing, material saving etc.. With the same steel plate, strip by strip material is divided into ordinary and high quality strip steel two categories; according to the manufacturing method of hot rolled strip,cold rolled strip two.
2 scope of application
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Steel is widely used in the production of welded steel pipe as blank, cold-formed steel, manufacturing bicycle frame, wheels, clamps, washer, spring film,saw blade, metal products and blade etc..
Cold-formed steel
In broadband steel
The 3 process
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The production process of cold rolled strip steel is generally: picklinglubrication, rolling, process, anneal and flat, cutting, packaging.
Cold rolled strip steel pickling rolling process: -- -- -- -- the size of synchronousrolling annealing lubricating antirust oil length -- -- -- flat polished package
Hot strip rolling heating furnace dephosphorization machine: -- -- -- --phosphorus removal roughing mill machine finishing mill surface quality inspection instrument -- -- -- -- layer cold coiler bundling machine -- number spraying machine -- volume base slab
The production process of hot rolling strip steel: first in the heating furnace of increasing the temperature to the desired temperature of rolling, and then oxidized to tin machine generated on the slab roller into the roughingphosphorus removal treatment, then enter the width and thickness of striproughing rolling unit rolling, iron oxide by roller conveying to phosphorus on the strip surface finishing machine produce processing, enter the width and thickness of strip finishing rolling unit for more precision rolling, strip by rollerby layer on the surface temperature of cold roll strictly control take before and after, enters the coiler for steel coil finally bundling, spraying number into thevolume storage packaging.
4 Market
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In May 20th Shengfang steel prices down. According to the data Chineseindustry insight network show: Hebei forward, Sheng Bao, Bazhou Xinya, the new crown made 2.5* (232-355) steel price is 3400 yuan (ton price, the same below), down 50 yuan more than last Friday.
Influenced by Tangshan last week, small narrow billet prices, Saturday (18 days) in Shengfang area with steel mills have lowered the ex factory price. The price decline, turnover performance in general, opened today manufacturersoffer temporary stability. In addition, the Tangshan area steel prices also have lowered, 355mm strip retail pricing million in 3320-3350, with the local price difference between 50-80 yuan, relatively reasonable.
Today Tangshan small narrow band market prices show small to rise, and the futures, electronic disk also rise, but the rise of strength are insufficient. At present, the overall trend of steel spot market downturn, but the steel market is restricted by the supply pressure, the market price is the emergence of the continuing rise in prices. And will soon enter the consumer off-season, terminaldemand release rate has slowed down, expected short-term local steel marketprice is still dominated by the shock consolidation.
5 Classification
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Hot rolled strip
1, hot rolled ordinary carbon structural steel (GB3524-83)
Strip steel
Hot rolled plain carbon steel with ordinary carbon structural steel as material,made of 1.80-6.00mm hot rolled strip thickness, width of 50-1200mm.
(1) the main purposes
Mainly used for cold rolling billet, cold-formed steel billet, welded steel pipebillet and bicycle, hardware products manufacturing.
(2) grade and chemical composition of materials
Standards and grades
National standard
Quite foreign standard
Function and use
Material categories
The implementation of standards
Grade
Standard No.
Grade
Suitable for manufacturing of cold forming parts
Low carbon steel coil
Q/BQB302
SPHC
JISG3131
SPHC
SPHD
SPHD
SPHE
SPHE
SAE1006/SAE1008
SAE1006/SAE1008
XG180IF/200IF
XG180IF/200IF
Steel for general structure
GB/T912-1989
Q195
JISG3101
SS330
For general construction of buildings, bridges, ships, vehicles, etc.
Q235B
SS400
SS400
SS490
ASTMA36
SS540
(3) the mechanical properties
The nominal thickness
The yield strength (Mpa)
Tensile strength (Mpa)
Elongation of A50mm%
The 180 degree bend test
>1.5-2.5
Less than or equal to 290
More than 310
More than 38
D=0a
>2.5-3.0
Less than or equal to 290
More than 300
More than 38
D=0a
>3.0-4.0
Less than or equal to 290
More than 300
More than 40
D=1/2a
Use of hot-rolled steel 2, bicycle (GB3645-89)
Bicycle for hot rolled wide strip steel in carbon steel and low alloy steel asmaterial, made of 1.8-8.0mm strip steel thickness after hot rolling, the strip width can reach 1300mm.
(1) the main uses special for bicycle manufacturing materials.
(2) grade and chemical composition of materials
(3) the mechanical properties
(4) strip (board) size
The thickness of the steel plate strip thickness 1.8-6.0mm, 7, 8.0mm.
Strip (board) width: rimming steel is less than or equal to 1300mm (a=2.0-6.0)
Killed steel is less than or equal to 1250mm (a = 3)
Less than or equal to 1300mm (a = 3)
The length of the plate, steel coil diameter 760mm, 4-6m plate.
Hot rolled strip with 3, bicycle (GB3647-89)
(1) the main purposes
Bicycle designed for the manufacture of hot rolled strip of bicycle and the chain, also can be used for cold rolled and welded pipe blank blank.
(2) grade and chemical composition of materials
(3) the mechanical properties
(4) the specification of strip
Bicycles are generally used for hot rolled strip steel strip thickness of 1.8-8.0mm, width of 60-250mm.
Hot rolled strip with 4, pressure vessel (GB5681-85)
(1) the main purposes
Used in the manufacture of low pressure vessel.
(2) grade and chemical composition of materials
(3) the mechanical properties
(4) the specification of strip and production unit
Pressure vessel is generally used for hot rolled strip steel strip thickness of 4mm, width of 80mm double length, length of not less than 70m (volume).
Cold rolling of strip
(1) the main purposes
Cold-rolled carbon steel for the manufacture of bicycles, sewing machines,agricultural machinery and other accessories and hardware products.
(2) grade and chemical composition of materials
Grade
Supply standard
Supply size
Use
SPCC
Q195
Q235-B
GB/T912
GB/T3274
Width
Mm
Thickness
Mm
Widely used in engineering machinery, transportation machinery, construction machinery, hoisting machinery。
- Q: What are the common applications of galvanized steel strips?
- Galvanized steel strips possess durable and corrosion-resistant properties, making them suitable for a wide range of applications. Some of the most common uses of galvanized steel strips are as follows: 1. Construction industry: In the construction sector, galvanized steel strips find extensive usage. These strips are employed in creating roofing sheets, gutters, downspouts, and flashings. Their corrosion resistance makes them ideal for outdoor construction projects. 2. Automotive industry: Galvanized steel strips play a vital role in manufacturing automotive components such as car bodies, chassis, and structural parts. Their corrosion resistance ensures the longevity and durability of these automotive parts. 3. Electrical industry: Galvanized steel strips are utilized in the electrical industry for electrical enclosures, switchboards, and cable trays. The galvanized coating guarantees corrosion protection, safety, and longevity of electrical equipment. 4. Manufacturing industry: Galvanized steel strips are widely employed in the manufacturing sector for diverse applications. They are used to fabricate metal furniture, storage units, cabinets, and shelving systems. The corrosion resistance of galvanized steel strips helps maintain the structural integrity and appearance of these products. 5. Agricultural industry: Galvanized steel strips are commonly utilized in agricultural applications for making fences, gates, and animal enclosures. The galvanized coating protects against rust and enhances the durability of these structures. 6. HVAC industry: In the HVAC industry, galvanized steel strips are used for ductwork, air handling units, and exhaust systems. The galvanized coating ensures that these systems can endure harsh environmental conditions while remaining corrosion-free. 7. Packaging industry: The packaging industry utilizes galvanized steel strips to manufacture metal packaging containers such as drums and barrels. The galvanized coating acts as a protective barrier against corrosion, ensuring the safety and security of the container's contents. In summary, galvanized steel strips are widely applied in various industries and sectors due to their corrosion resistance, durability, and versatility.
- Q: What is the yield strength of a steel strip?
- The yield strength of a steel strip refers to the maximum amount of stress or force that can be applied to the strip before it permanently deforms or breaks. It is an important characteristic that determines the strip's ability to withstand loads without undergoing plastic deformation.
- Q: How are steel strips processed for different applications?
- Steel strips are processed for different applications through various methods such as hot rolling, annealing, pickling, and cold rolling. These processes help shape and improve the properties of steel strips, making them suitable for specific uses. Additionally, coatings or surface treatments may be applied to enhance corrosion resistance or provide specific functionalities required for different applications.
- Q: How are steel strips used in the production of storage tanks?
- Steel strips are used in the production of storage tanks to form the structure and provide strength and durability. These strips are bent and welded together to create the tank's cylindrical shape, ensuring it can withstand the pressure and weight of the stored materials.
- Q: How are steel strips processed for surface bending?
- Steel strips are processed for surface bending through a series of steps that involve heating the material to a specific temperature, followed by applying pressure or force to bend it into the desired shape. This can be done using various methods such as hot rolling, cold rolling, or even using specialized machinery like a press brake. The process may also involve additional treatments like annealing or quenching to enhance the steel's flexibility and strength.
- Q: What are the different surface polishing methods for steel strips?
- There are several surface polishing methods for steel strips, including mechanical polishing, electrochemical polishing, and chemical polishing. Mechanical polishing involves using abrasive materials to remove surface imperfections and create a smooth finish. Electrochemical polishing uses an electric current to dissolve the surface layer of the steel, resulting in a polished surface. Chemical polishing involves using chemical solutions to remove a thin layer of the steel's surface, leaving a polished finish.
- Q: Pickling process of cold rolled strip
- The pickling section can be divided into two ways: sulfuric acid pickling and hydrochloric acid pickling, but because hydrochloric acid pickling has more advantages, we can explain it by the acid washing mechanism of hydrochloric acid.The chemical reaction between hydrochloric acid solution and iron oxide scale is:FeO + 2HCl = FeCl2 + H2OFe2O3 + 6HCl = 2FeCl3 + 3H2OHydrochloric acid solution can quickly dissolve all kinds of oxide scales, pickling reaction can be carried out from the outer layer. Hydrochloric acid pickling is mainly chemical corrosion, and hydrochloric acid pickling is very harmful to metal matrix. Therefore,The structure is not sensitive to the efficiency of acid pickling of iron oxide scales, and the steel surface after pickling clean silver. The rate of acid washing reaction is closely related to the degree of cracking of strip iron before picklingOff.
- Q: What are the specifications for steel strips used in the production of door hinges?
- Depending on the manufacturer's specific requirements and the type of door hinge being produced, the specifications for steel strips used in door hinge production can vary. However, there are commonly followed general specifications in the industry. Typically, high-quality carbon or stainless steel is used to make the steel strips for door hinges. Carbon steel is commonly used for standard door hinges, while stainless steel is preferred for hinges that require higher corrosion resistance or aesthetic appeal. When it comes to dimensions, the steel strips for door hinges come in various thicknesses, ranging from 0.5mm to 3mm. The width of the strips can vary depending on the hinge design and application, but it usually falls between 10mm and 50mm. The tensile strength and yield strength of the steel strips are crucial specifications to consider. Tensile strength refers to the maximum stress the strip can withstand before breaking, while yield strength is the stress at which the strip permanently deforms. These values can range from 300 MPa to 700 MPa or more, depending on the specific needs of the door hinge. Moreover, the steel strips used in door hinge production may undergo specific treatments or coatings to enhance their properties. For instance, heat treatment can be applied to improve strength and hardness. Galvanization or coating with other corrosion-resistant materials can also be done to prevent rusting or enhance overall hinge durability. In conclusion, the specifications for steel strips used in door hinge production can vary, but they typically include considerations for the type of steel, dimensions, tensile strength, yield strength, and any additional treatments or coatings required to meet the specific needs of the door hinge.
- Q: Can steel strips be used for making electrical connectors in electronic devices?
- Yes, steel strips can be used for making electrical connectors in electronic devices. Steel strips are commonly used in the manufacturing of electrical connectors due to their high conductivity and durability. They provide a reliable and efficient connection between different components in electronic devices. Steel strips can be easily shaped and formed into various connector designs, allowing for versatility in their usage. Additionally, steel strips offer excellent resistance to corrosion, ensuring the longevity of the connectors. Overall, steel strips are a suitable material choice for making electrical connectors in electronic devices.
- Q: How do steel strips contribute to product recyclability in various applications?
- There are several ways in which steel strips contribute to the recyclability of products in various applications. First and foremost, steel is one of the most widely recycled materials globally. Since steel strips are made of steel, they can be easily and readily recycled to produce new products. This helps reduce the need for manufacturing new steel from scratch, thereby conserving natural resources and minimizing the energy required for steel production. Furthermore, steel strips are highly durable and have a long lifespan. As a result, products incorporating steel strips, such as automotive parts, appliances, and building materials, have an extended usable life. Consequently, these products are less likely to be prematurely discarded and end up in landfills, resulting in a reduction in waste generation. Moreover, the recycling process for steel strips is relatively simple and efficient. Steel can be recycled indefinitely without losing its inherent qualities. When steel products reach the end of their life cycle, they can be easily collected, sorted, and processed at recycling facilities. The steel is then melted down and transformed into new steel products, including steel strips themselves. This closed-loop recycling system ensures continuous recycling of steel strips without any loss in quality. Additionally, the incorporation of steel strips in various applications can enhance the overall recyclability of the products. For instance, steel strips can be used as reinforcements in plastic products like packaging materials or furniture, making them easier to separate and recycle during the recycling process. This improves the efficiency and effectiveness of recycling by reducing the need for complicated and costly separation techniques. In conclusion, the use of steel strips contributes to the recyclability of products in multiple ways. They are highly recyclable themselves, prolong the lifespan of products, facilitate efficient recycling processes, and enhance the overall recyclability of products. By utilizing steel strips, manufacturers can promote a more sustainable and environmentally friendly approach to production and consumption.
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High grade hot rolled narrow strip steel
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t.
- Supply Capability:
- 5000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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