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: How do steel strips contribute to reducing maintenance costs in various applications?
- Maintenance costs can be significantly reduced in various applications through the use of steel strips. There are several reasons for this. To begin with, steel strips are highly durable and strong, making them resistant to wear and tear. This means that they can withstand heavy loads and harsh environmental conditions without deteriorating quickly. As a result, the need for frequent repairs and replacements is greatly reduced, leading to lower maintenance costs. In addition, steel strips have excellent corrosion resistance properties. They can withstand exposure to moisture, chemicals, and other corrosive substances that are common in many applications. By preventing corrosion and rusting, steel strips help extend the lifespan of equipment or infrastructure, reducing the frequency of maintenance interventions and associated costs. Furthermore, steel strips can be easily fabricated into various shapes and sizes, making them highly versatile for different applications. This flexibility allows for precise customization and ensures a perfect fit, minimizing the risk of malfunctions and the need for maintenance due to poor fitting or alignment. Moreover, steel strips provide good thermal conductivity, which is crucial in applications where temperature variations occur. The ability to efficiently transfer heat helps prevent overheating or freezing, reducing the likelihood of damage and the need for maintenance or repairs. Finally, steel strips are often treated with protective coatings or finishes, such as galvanization, which further enhance their resistance to corrosion and wear. These coatings act as a barrier, protecting the underlying steel from environmental elements and extending its lifespan. To sum up, steel strips offer durability, corrosion resistance, versatility, thermal conductivity, and protective coatings, all of which contribute to reducing maintenance costs in various applications. By minimizing the need for repairs, replacements, and maintenance interventions, steel strips help optimize operational efficiency and reduce overall expenses.
- Q: How are steel strips used in the production of household tools?
- Steel strips are used in the production of household tools as they provide a durable and strong material for creating the blades, handles, and other components of various tools. The steel strips are shaped, cut, and formed into the desired tool designs, ensuring longevity and reliability in everyday use.
- Q: How do steel strips contribute to electrical conductivity in various applications?
- Steel strips contribute to electrical conductivity in various applications due to their high electrical conductivity. Steel is an alloy primarily composed of iron, which is a good conductor of electricity. Additionally, steel strips can be made even more conductive by adding certain elements such as chromium or nickel. This makes them suitable for applications where electrical current needs to flow efficiently, such as in power transmission, electrical wiring, and circuit boards. The use of steel strips ensures reliable and efficient electrical conductivity in these applications.
- Q: How are steel strips used in the production of HVAC systems?
- Steel strips are commonly used in the production of HVAC systems for various purposes such as forming the structural components, creating air ducts, and fabricating heat exchangers. These strips are often shaped, bent, or rolled to create the necessary components, ensuring durability and strength in the final product. Additionally, steel strips may also be used for reinforcing or supporting other elements within the HVAC system, enhancing its overall functionality and longevity.
- Q: Are steel strips used in the production of automotive exhaust systems?
- Yes, steel strips are commonly used in the production of automotive exhaust systems. They are used for various components such as pipes, mufflers, and catalytic converters due to their strength, durability, and resistance to high temperatures.
- Q: How are steel strips tested for corrosion resistance?
- Steel strips are tested for corrosion resistance through a variety of methods to ensure their durability and longevity. One commonly used method is the salt spray test, also known as the ASTM B117 test. In this test, the steel strips are exposed to a highly corrosive salt spray environment for a specified period of time. This simulates the effects of corrosion that the steel strips may encounter in real-world conditions. Another method used for corrosion resistance testing is the electrochemical test. This involves immersing the steel strips in a corrosive solution and applying a small electrical current. The resulting measurements of corrosion potential and current flow provide valuable information about the material's resistance to corrosion. Additionally, some laboratories perform accelerated corrosion tests using specialized equipment. These tests subject the steel strips to extreme conditions, such as high humidity or temperature fluctuations, to accelerate the corrosion process. This allows researchers to evaluate the material's performance in a shorter time frame. Furthermore, visual inspection and microscopic examination can be conducted to assess the extent of corrosion or any signs of corrosion initiation on the steel strips. This can help identify areas of weakness and guide improvements in the material's composition or production processes. Overall, a combination of salt spray testing, electrochemical testing, accelerated corrosion tests, and visual examination are employed to comprehensively evaluate the corrosion resistance of steel strips. By conducting these tests, manufacturers can ensure that their steel strips meet the required standards and are capable of withstanding corrosive environments, thus ensuring their long-term reliability and performance.
- Q: What are the different temper options for steel strips?
- Some common temper options for steel strips include annealing, hardening, tempering, and quenching. Each temper option involves specific heating and cooling processes to achieve desired properties such as hardness, strength, toughness, or ductility.
- Q: Are steel strips suitable for the manufacturing of defense equipment?
- Yes, steel strips are suitable for the manufacturing of defense equipment. Steel strips are known for their high strength, durability, and resistance to impact, making them an ideal material for producing military-grade equipment such as armored vehicles, weapons, and protective gear. Additionally, steel strips can be easily shaped and welded, allowing for the customization of defense equipment according to specific requirements.
- Q: What are the different widths and thicknesses of steel strips available?
- Steel strips come in a wide range of widths and thicknesses to accommodate various needs and uses. These strips can be as narrow as 0.5 inches or as wide as 60 inches or even more. Similarly, the thicknesses of steel strips can vary greatly, typically falling between 0.001 inches and 0.25 inches or even more. However, it is worth noting that the availability of specific widths and thicknesses may differ depending on the steel manufacturer and the grade of steel being utilized. Furthermore, custom widths and thicknesses can be manufactured to cater to specific project demands.
- Q: What is the purpose of hardening and tempering steel strips?
- The purpose of hardening and tempering steel strips is to increase their strength, durability, and resistance to wear and corrosion. Hardening involves heating the steel to a high temperature and then rapidly cooling it to create a hardened structure, while tempering involves reheating the hardened steel to a lower temperature to reduce brittleness and improve toughness. This process helps to optimize the properties of the steel strips for various applications, such as in manufacturing tools, springs, and automotive components.
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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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