What is a steel sleeve?
Steel sleeve is also called a steel joint. A connector for connecting reinforcement and having an internal thread corresponding to the thread of the screw head. The construction process is simple. The end of the steel bar is processed into straight thread by rolling process, and the two steel bars are connected with each other by the corresponding connecting sleeve.
application of steel sleeve
It is widely used in the coiling of foil, strip, and plate in the industries of aluminum foil, aluminum plate, and stainless steel foil strip, etc.
As the sleeve rotates at high speed during working, the requirement for concentricity and dynamic balance of the sleeve is strict, which has a great influence on the product qualification rate and subsequent reprocessing. Therefore, centrifugal pouring is the best production process for the steel sleeve.
Sometimes products need heat treatment, which puts higher requirements on steel sleeves. Generally speaking, carbon steels such as ZG45 and ZG55 have lower strength and are not resistant to high-temperature deformation, they need alloy steel sleeves such as ZG35CrNiMo, ZG25Cr2Mo1V and 35CrMo.
Process Of Steel Sleeve
In general the product of steel sleeve for cold rolling mill process is as following:
1.Steel smelt with qualified ingredients.
2.Centrifugal casting.
3. Semifinished products forming.
4.Semi-finished products heat treatment-normalizing.
5.Semifinished products heat treatment-tempering.
6.Semifinished products quenching and machining.
7. Finishing internal side.
8. Finishing outside surface benchmarked with an internal hole.
9.Products inspection.
10. Strike steel sleeve for cold rolling mill trademark.
11. Certificate issued.
12.Packaging.
Quenching process: Pit quenched with water quenching and oil cooling.
We use the advanced process of smelting and casting dedicated to ensure the steel sleeve chemical composition is reliable, accurate, and has the same properties. Centrifugal casting is dedicated to ensuring internal and external surfaces of the sleeve have no defects such as crack, slag, blowhole, blister, etc. The heat treatment process will make sure the mechanical performance of the sleeve. With the special machining tool and rational process, the sleeves have high performance of concentricity, cylindrical, symmetry, and balance.
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Steel rebar, also known as deformed bar, is a steel bar or mesh of steel wires used as a tension device in reinforced concrete and reinforced structures to strengthen and hold the concrete in tension. Rebar surface is often patterned to form a better bond with the concrete.
Steel plates are often used for structural and construction applications, pressure vessels, marine and offshore equipment, and military applications. It can be used anywhere where a connection between 2 beams is required. They are used for base plates, end plates, stiffeners, gussets, tabs, splice plates and many more. In some cases they add strength to a beam when welded along the length of a beam (top or bottom).
With the excellent properties such as high strength, good toughness, easy machinability and good weldability, Baosteel's hot-rolled steel products are widely used in ship, automobile, bridge, building, machinery and pressure vessel and other industrial applications
Cold forming
Mainly used to manufacture the general machining components such as gear, electrical instrumental box, jack casing; Bike shaft bowl, rim and wheel disk, auto buffer, compressor unit and oil filter box, etc
Structure
Mainly used to manufacture building structure, bridge, ship, rolling stock, pipeline, heavy machinery and other structural parts, etc.
Automotive structure
Mainly used to manufacture automobile frame, cross member, wheel, chassis components, etc.
Corrosion resistant structure
Mainly used to manufacture oil derrick, harbor construction, offshore platform, ship, vehicle, chemical industry and vessel containing hydrogen sulfide corrosion media in petroleum equipment, etc.
Mechanical structure
With the features of good toughness and wear resistance, manly used to manufacure chain, bundling machine and garden tool set, etc.
Welding gas cylinder and pressure vessel
Mainly used to manufacture steam boiler, welding gas cylinder and the pressure vessel with high temperature service.
Pipeline
Mainly used to manufacture spiral welded pipe for oil and natural gas transmission.
CR steel sheets have good processability, with good flatness and excellent surface, are available with different thickness and width combinations; are mainly used to manufacture the high value-added products in automotive and appliance, beverage packaging, electronic, electrcial moor and building etc. The CR steel sheet include the oncoated steel steel , galvanzied steel sheet, tin plate and TFS, precoated steel sheet and electrical steel steel, etc.
Uncoated CR steel sheet
With the features of in line with the international highest standards in demension and shape, excellent surface finish and properties, the products are mainly used in home appliance and automobile industries.
Galvanized steel sheet(include HDG and EG)
With the features of good corrosion resistance, the products are mainly used in automobile, home appliance, electronics, building and machinery manufacture industries, etc.
Precoated steel sheet
With the features of enviromental protection and good processablility, long lasting surface durability, rich in colors, the products are maily used in building, home appliance and furniture industries, etc.
Electrical steel sheet
Mainly used to manufacture generating equipment, locomotive, industrial motor and home appliance.
2. Have sold into over 60 countries, quality highly praised.Produducing standard en 10249.In european market, our market share is among top 4.In middleast countries, we already become the biggest supplier of sheet piles. In chinese market, we cover over 90% share. We also play big roles in other markets, like south asia, america, afria, australiaí¡
3.Strong production ability: over 1500tons/day
4.Full arrange of sizes for all kinds of projects u type, z types. Straight web sheet piles.
5. Professional advise on the choice of sheet piles and projects
We have over 40, 000 tons of regular stock, so when your request is in our stock, the delivery time is very short.
Steel plates are often used for structural and construction applications, pressure vessels, marine and offshore equipment, and military applications. It can be used anywhere where a connection between 2 beams is required. They are used for base plates, end plates, stiffeners, gussets, tabs, splice plates and many more. In some cases they add strength to a beam when welded along the length of a beam (top or bottom).
Steel grating has light weight, good strength, large carrying capacity and can save materials and cost. It offers good ventilation of light and wind, a modern sense, aesthetic appearance and anti-skid safety. It is also easy to clean, easy to installation and durable for uses. Gratings are generally used when you need:
- Open area to allow passage of light, air, heat and sound between flooring levels
- Flooring on which liquids and/or debris cannot collect
- Flooring where slip resistance is an issue
- Areas where easy installation and fabrication are important
- Areas where there are complex floor patterns and hard-to-fit areas
- Situations that require a high strength-to-weight ratio
Guardrail is a system designed to keep people or vehicles from straying into dangerous or off-limits areas. JQF Group offers a sophisticated, standardised approach to guardrail fabrication. Our computerised steel railing manufacturing process ensures all holes, slots, and dimensions are 100% accurate for maximum compatibility with a wide variety of guardrail systems.
A T-Beam is a load-bearing structure with a t-shaped cross section. The top of the t-shaped cross section serves as a flange or compression member in resisting compressive stresses. The web of the beam below the compression flange serves to resist shear stress and to provide greater separation for the coupled forces of bending.
Other uses for one way to make a T-beam to be more efficient structurally is to use an inverted T-beam with a floor slab or bridge deck joining the tops of the beams. Done properly, the slab acts as the compression flange.
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