Stainless Steel Coil

 

Definition of Gnee stainless steel coil

Stainless steel coils are divided into austenite, ferrite, martensite, duplex (ferrite-austenite) stainless steel cold rolled coils and stainless steel hot rolled coils.

Coiled materials and plates are actually the same, they just come out of the factory in different forms. Coiled materials come in rolls, while plates come out one by one. If they come out of the factory as plates, they are also called original plates, which are usually thick plates. If they are very thick, they cannot be rolled. Generally, they cannot be rolled if they are thicker than 16 mm.

 

Stainless steel hot-rolled coil: thickness 1.5-15, width 1000 or 1219 or 1500 or 1800 or 2000 (including burrs)
Stainless steel cold-rolled coil: thickness 0.3-3.0, width 1000 or 1219 or 1500 (including burrs)
Stainless steel cold-rolled coil: thickness 0.1-3.0, width 500 or 1600 (including burrs)

Stainless Steel Sheet/ Coil/ Strip
Thickness: 0.40mm ~ 4.00mm for Cold Rolled; 3.00mm ~ 20mm for Hot Rolled
Width: Any width/ 1000mm/ 1219mm / 1500mm/ 2000mm
Length: Coil / 1000mm/ 1219mm/ 2438mm/ 3000mm/ 6000mm

Coils and plates are actually the same, they just come out of the factory in different forms. Coils come in rolls, while plates come out in sheets. If they come out of the factory in sheets, they are also called original sheets, which are usually thick sheets. If they are very thick, they cannot be rolled. Generally, they cannot be rolled if they are thicker than 16 mm. There are coils and plates, and most of the time they are plates. The prices of coils and plates are not the same. If you purchase a coil, it is calculated based on the actual weight, so the price is high. Plates are calculated based on theory, so the price is low because there is a difference. For example, a 10mm thick sheet may actually be 9.6mm, so there will be a price difference.

Classification of stainless steel coils (coils + plates)
Coils and plates are actually the same, but they are shipped in different forms. Coils are shipped in rolls, while plates are shipped in sheets, so they can be classified and further subdivided.

Classification by thickness: (1) Ultra-thin plate (precision strip) (less than 0.2mm); (2) Thin plate (0.2mm-4mm); (3) Medium plate (4mm-20mm); (4) Thick plate (20mm-60mm); (5) Extra thick plate (60-115mm)

Classification by production method: (1) Hot-rolled steel plate (2) Cold-rolled steel plate

Classification by width method: (1) Narrow strip (width less than 1000mm) (2) Wide plate (width 1000mm < width < 1500mm) (3) Ultra-wide plate (width greater than 1500mm); Current mainstream varieties in the market: meter ruler (1000mm), four-foot ruler (1219mm), five-foot ruler (1500mm)

Classification by surface characteristics:
No.1: After hot rolling, it undergoes heat treatment and pickling process, and is used for cold rolling raw materials, industrial TANK, chemical industry equipment, etc.

No.2D: A matte cold-rolled product produced by heat treatment and pickling after cold rolling, used for petrochemical production equipment, automotive parts, building materials, pipeline materials, etc.

No.2B: A product after tempering and rolling of No.2D. Compared with No.2D, it has better gloss and surface smoothness. After adopting the surface treatment method to improve mechanical properties, it can meet almost all uses.

No.3: A product ground with 100 to 120 mesh abrasive paper, suitable for products that require beautiful gloss, such as building interior and exterior decoration materials, various electronic product appearances, and kitchen equipment.

No.4: A product ground with 150 to 180 mesh abrasive paper, compared with No.3, has a finer submerged state and a silvery white surface. It is mainly used for bathtubs, building interior and exterior decoration materials, food equipment, etc.

BA: A product that undergoes bright annealing heat treatment after cold rolling and is tempered and rolled, and is mostly used for home appliances, small mirrors, kitchen equipment, and building materials that require high reflectivity.

HL: Using abrasive paper of appropriate particle size, No.4 can generate continuous grinding patterns, which are mostly used for building interior and exterior decoration materials.

DULL: Using a pitted roller, No.2b can reduce the gloss and generate pits, and can also reduce the reflection effect. It is mainly used for interior and exterior decoration materials of automobiles and buildings.

Mirror plate: Stainless steel mirror plate is also called mirror plate. It is polished on the surface of stainless steel plate with grinding liquid through polishing equipment to make the plate surface as clear as a mirror. Uses: Mainly used in building decoration, elevator decoration, industrial decoration, facility decoration and other stainless steel series products.

Embossed plate: The concave and convex patterns are applied on the surface of the steel plate, which is used in places requiring smoothness and ornamental properties. Embossed rolling is rolled with a working roller with a pattern, and its working roller is usually processed with an erosion liquid. The depth of the concave and convex on the plate varies depending on the pattern, about 20-30 microns.

Etched plate: Stainless steel etched plate is a stainless steel surface that is chemically etched with various patterns. With 8K mirror plate, brushed plate and sandblasted plate as the base plate, after etching, the surface of the object is further processed. Stainless steel etching plate can be processed with various complex processes such as local and pattern, brushing, gold inlay, local titanium, etc., and the stainless steel etching plate can achieve the effect of light and dark patterns and gorgeous colors.

Hewen plate: The sand pattern of Hewen stainless steel was introduced to China from Europe and first appeared in Beijing. From a distance, the sand pattern is composed of circles of sand patterns. From a close distance, it is irregular and chaotic. It is ground by the irregular swing of the grinding head up and down. It is widely used in decoration fields such as elevator decoration, hotel decoration, KTV decoration, villa decoration, furniture making, advertising light boxes, etc.

Composite plate: Stainless steel composite plate is a composite plate steel plate composed of carbon steel base and stainless steel cladding. Its main feature is that carbon steel and stainless steel form a strong metallurgical bond. It can be processed by hot pressing, cold bending, cutting, welding, etc., and has good process performance. It is used in petroleum, chemical, salt industry, food processing and other industries.

Stainless steel strip is also called coil, coil, plate, plate roll, and the hardness of the strip also varies.
Features of stainless steel:
1. Complete product specifications and diverse materials;
2. High dimensional accuracy, up to ±0.1mm;
3. Excellent surface quality and good brightness;
4. Strong corrosion resistance, high tensile strength and fatigue resistance;
5. Stable chemical composition, pure steel, low inclusion content;
6. Intact packaging and favorable price;
7. Can be customized.

1. Automotive: automotive trim and molded/difficult-to-mold exhaust system parts, tubular manifolds, mufflers/exhaust manifolds and other exhaust system parts, three-way catalytic converter housings, clips
2. Construction: gutters and downspouts, roofing, siding
3. Kitchenware: cookers, dishwashers, ovens, range hoods, refrigerators, grills
4. Chemical processing: oil refining equipment, oil burners and heater parts
5. Appliances: hot water tanks, residential furnaces
6. Power generation: heat exchanger tubes
7. Farm animal enclosures/animal shelters
8. Food processing: restaurant equipment (hotels), food and dairy processing equipment

The production process of stainless steel coils usually includes the following steps:
1. Material selection: Select raw materials suitable for the production of stainless steel coils.
2. Melting and casting: Melt the raw materials into stainless steel liquid and then cast them.
3. Hot rolling: Roll the stainless steel billet at high temperature to make it plastically deformed.
4. Cold rolling: Roll the stainless steel coil at room temperature to make its thickness and shape more precise.
5. Annealing and pickling: Anneal the stainless steel coil to eliminate stress, and use pickling liquid to remove surface impurities and oxide scale.
6. Finishing and cutting: Finish the stainless steel coil to remove burrs and edge irregularities, and cut to obtain the required length of the product.
7. Quality inspection: Quality inspection of stainless steel coils, including inspection of size, surface quality, chemical composition, etc.
8. Packaging: Pack the stainless steel coils in protective film or paper boxes to prevent surface scratches and oxidation.

GNEE STEEL company team and environment

GNEE STEEL factory environment and GNEE STEEL Group were invited to participate in foreign exhibitions

Gnee Steel (Tianjin) Co., Ltd. is well-known as one of the leading stainless steel coil manufacturers and suppliers in China. Our factory offers customized stainless steel coil made in China with competitive price. Welcome to contact us for wholesale service.