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: Can steel strips be used in the production of electronic components?
- Indeed, electronic components can be manufactured using steel strips. Due to their robustness, longevity, and capacity to conduct electricity, steel strips are frequently employed as a foundational material for an array of electronic components. The manufacturing process of printed circuit boards (PCBs), connectors, and other electronic parts often entails the utilization of steel strips. By offering a stable base, steel strips guarantee accurate alignment and secure attachment of electronic components. Moreover, these strips can be coated or treated to resist corrosion and enhance electrical conductivity, further rendering them suitable for electronic applications. In summary, steel strips present a dependable and economical option for producing electronic components.
- Q: What are the different types of steel strip coils?
- There are several different types of steel strip coils, including hot rolled, cold rolled, galvanized, and stainless steel strip coils.
- Q: How are steel strips processed for plating?
- Steel strips are typically processed for plating through a series of steps. First, the strips are cleaned to remove any impurities or contaminants. This is followed by surface preparation, which may involve mechanical processes like grinding or sanding to ensure a smooth and even surface. Next, the strips are often treated with chemicals or acid solutions to further clean and activate the surface, promoting better plating adhesion. Finally, the steel strips are immersed in a plating bath where a layer of the desired metal, such as nickel or zinc, is deposited onto the surface through an electrochemical process.
- Q: How do steel strips perform in terms of thermal conductivity?
- Steel strips have relatively high thermal conductivity, meaning they are efficient in conducting heat. This property allows them to quickly transfer and distribute thermal energy, making them suitable for various applications that require heat dissipation or heat transfer.
- Q: What are the common hardness levels for steel strips?
- The hardness levels of steel strips can differ depending on the grade and type of steel utilized. However, some frequently encountered hardness levels for steel strips are as follows: 1. Soft or Annealed: This designation applies to steel strips that have undergone annealing, a process involving heating the steel to a specific temperature and gradually cooling it. Annealed steel strips possess a lower hardness level, which makes them more pliable and easier to shape. 2. Half-hard: Steel strips that have undergone cold-rolling and subsequent annealing fall under the half-hard category. They possess a moderate hardness level, striking a balance between strength and formability. Half-hard steel strips are commonly utilized in applications that require a certain degree of resilience. 3. Full-hard: Steel strips that have undergone cold-rolling without subsequent annealing are classified as full-hard. They possess a higher hardness level, rendering them more rigid and less pliable. Full-hard steel strips are frequently employed in applications that demand high strength and resistance to deformation, such as springs or fasteners. 4. Tempered: Steel strips that have been heat-treated and rapidly cooled are referred to as tempered. This process enhances the hardness and strength of the steel, making it suitable for applications that necessitate increased durability and resistance to wear. It is important to mention that the hardness level of steel strips can be measured using various scales, such as the Rockwell or Brinell hardness scales. The specific hardness level required for a particular application depends on factors such as the intended use, environmental conditions, and desired mechanical properties. Seeking advice from a metallurgical expert or referring to industry standards can aid in determining the appropriate hardness level for steel strips in a given context.
- Q: What are the different welding techniques used for joining steel strips?
- Some of the different welding techniques used for joining steel strips include MIG (Metal Inert Gas) welding, TIG (Tungsten Inert Gas) welding, resistance welding, and laser welding. These techniques offer various advantages and are chosen based on factors such as the thickness of the steel strips, the desired strength of the joint, and the specific application requirements.
- 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.
- Q: What is the fatigue strength of a steel strip?
- The fatigue strength of a steel strip refers to its ability to withstand repeated loading and unloading cycles without failure. It is a measure of the strip's resistance to fatigue and is typically determined through fatigue testing.
- Q: Can steel strips be bent or shaped easily?
- No, steel strips cannot be bent or shaped easily.
- Q: How are steel strips processed for specific applications?
- Steel strips are processed for specific applications through a series of manufacturing steps such as hot rolling, cold rolling, annealing, and coating. These processes help in shaping the steel strips, improving their mechanical properties, and enhancing their corrosion resistance.
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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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