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304 Stainless Steel Corrugated Roofing Sheets For Electrical Appliances

Wuxi Shuangti Stainless Steel Co., Ltd.

304 Stainless Steel Corrugated Roofing Sheets For Electrical Appliances

Brand Name : TT brand

Model Number : 304 Stainless Steel

Certification : ASTM ,JIS ,SGS,ISO9001

Place of Origin : Wuxi ,Jiangsu Province,China

MOQ : 200Kg

Price : Negotiable

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 5000 tons per day

Delivery Time : 5-8 work days

Packaging Details : hot pressed gel board pallet or cabinet

Standard : ASTM,AISI,EN,JIS,DIN

Application : Construction,Decoration,Kitchenware,water tank,sink bowl

Length : 1000-6000mm,1000-6000mm or as requirement,Customers' Request,2438/3000/6000

Thickness : 0.15-100mm,0.25mm to 3.5mm,0.4-30mm,1mm-40mm,0.2mm-5mm

Technique : Cold Rolled Hot Rolled,ERW,Cold drawn,rerolling,Cold Rolled/hot rolled

Width : 1000-2000mm,0.3-100mm,20mm to 1245mm,8-3000mm,10-2000MM or customized

Surface : BA,2B,HL,BA/2B/NO.1/NO.3/NO.4/8K/HL/2D/1D,Annealing

Steel grade : 300 Series,200/300/400 Series,200,400

Color : Natural Color,rose etc,Silver

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food class​ 316l stainless steel sheets high quality ss 2b 20 gauge 304 stainless steel sheet 304 price

2B surface

2B surface is one of main surface of stainless steel cold-rolled plate, and stainless steel 2B plate is a very widely used

stainless steel material, can be seen everywhere in production and life, such as stainless steel doors and Windows, water tank, shower room, baseboard wrapping edge, machine equipment shell, cabinet, all kinds of panels, electrical appliances, kitchenware

and so on.

Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
304 min.
max.
-
0.08
-
2.0
-
0.75
-
0.045
-
0.030
18.0
20.0
- 8.0
10.5
-
0.10

Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50 mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
304 515 205 40 92 201

Physical Properties

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100 °C (J/kg.K) Electrical Resistivity (nΩ.m)
0-100 °C 0-315 °C 0-538 °C at 100 °C at 500 °C
304/L/H 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

304 Stainless steel is a common stainless steel material, the density of 7.93 g / cm³; also called 18 / 8 stainless steel, meaning contains more than 18% chromium and more than 8% nickel; high temperature resistance of 800℃, with high processing performance, high toughness characteristics, widely used in industrial and furniture decoration industry and food and medical industry. However, it should be noted that the food grade 304 stainless steel compared with the ordinary 304 stainless steel, its content index is more strict. For example: the international definition of 304 stainless steel is basically mainly containing chromium 18% -20% nickel 8% -10%, but the food grade 304 stainless steel is containing 18% chromium and nickel 8% chromium, allowing a certain range of fluctuations, and limit the content of various heavy metals. In other words, the 304 stainless steel is not necessarily a food grade 304 stainless steel

Among the common labeling methods in the market are 06Cr19Ni10, SUS304, among which 06Cr19Ni10 generally means national standard production, 304 generally means ASTM standard production, and SUS304 indicates daily standard production.

The 304 Is a universal stainless steel, which is widely used to make the equipment and machine parts requiring good comprehensive performance (corrosion resistance and molding performance). To maintain the inherent corrosion resistance of stainless steel, steel must contain over 18% chromium and over 8% nickel.304 Stainless Steel is a plate of stainless steel manufactured to American ASTM standards

physical property

Tensile strength b (MPa) 515-1035

Conditional yield strength of 0.2 (MPa) 205

Elongation rate: 5 (%) 40

Section shrinkage rate (%)?

Hardness: 201HBW; 92HRB; 210HV

Density (20℃, g / cm³): 7.93

Melting point (℃): 1398~1454

Specific heat capacity (0~100℃, KJ · kg-1K-1): 0.50

Thermal conductivity (W · m-1 · K-1): (100℃) 16.3, (500℃) 21.5

Line expansion coefficient (10-6 · K-1): (0~100℃) 17.2, (0~500℃) 18.4

Respetivity (20℃, 10-6 Ω·m2 / m): 0.73

Longitudinal elastic modulus (20℃, KN/mm2): 193

product standard

For 304 stainless steel, the Ni element in its component is very important, which directly determines the corrosion resistance of 304 stainless steel and its value.

The most important elements in the 304 are Ni and Cr, but they are not limited to them. Specific requirements are specified by the product standards. The industry commonly determines that as long as the Ni content is greater than 8%, and the Cr content is greater than 18%, it can be considered as 304 stainless steel. This is why the industry calls this kind of stainless steel 18 / 8 stainless steel. In fact, the relevant product standards have a very clear regulation for the 304, and these product standards for different shapes of stainless steel and some differences. Here are some common product standards and tests.

In order to determine whether a material is 304 stainless steel, it must meet the requirements of each element in the product standard, as long as there is a material that does not meet, it cannot be called 304 stainless steel.

1. ASTM A276 (Standard Specification for Stainless Steel Bars bar and Shapes profile)

304 C Mn P S Si Cr Ni

Requirement,% 0.08 2.00 0.045 0.030 1.00 18.020.0 8.0-11.0

2. ASTM A240 (Chromium and Chromium-Nickel Stainless Steel Plate sheet, Sheet sheet, and Strip strip for Pressure essels and for General Applications)

304 C Mn P S Si Cr Ni N

Requirement,% 0.07 2.00 0.045 0.030 0.75 17.519.5 8.010.5 0.10

3. JIS G4305 (cold-rolled cold-rolled stainless steel plate sheet, sheet sheet and strip strip)

SUS 304 C Mn P S Si Cr Ni

Requirement,% 0.08 2.00 0.045 0.030 1.00 18.020.0 8.0-10.5

4. JIS G4303 (Stainless steel bars stainless steel rod)

SUS 304 C Mn P S Si Cr Ni

Requirement,% 0.08 2.00 0.045 0.030 1.00 18.020.0 8.0-10.5

The above four criteria are just a few common criteria, in fact, ASTM and JIS have mentioned more than these 304 criteria. In fact, each standard of 304 requirements are not the same, so to determine whether a material is 304, the accurate expression should be said whether it meets the 304 requirements of a product standard. Material certificate should generally issue the following type of report:

Detailed standard specification comparison: until 2015-12-08

No. Standard / S30400 C Mn P S Si Cr Ni N Cu

1 ASTM A276/A276M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

2 ASTM A959-11 0.07 2.00 0.045 0.030 1.00 17.5-19.5 8.0-11.0

3 ASTM A240/A240M-15a 0.07 2.00 0.045 0.030 0.75 17.5-19.5 8.0-10.5

4 ASTM A182/A182M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 0.10

5 ASTM A193/A193M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

6 ASTM A269/A269M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

7 ASTM A312/A312M-15a 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

8 ASTM A320/A320M-15a 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

9 ASTM A403/A403M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

10 ASTM A493-09(2013) 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5 0.10 1.00

11 ASTM A554-15a (MT-304) 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

12 JIS G4303:2012 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5

13 JIS G4304:2012 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5

14 JIS G4305:2012 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5

15 GB/T 20878-2007 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0

System description:

304 stainless steel is the most widely used chromium-nickel stainless steel, as a versatile steel, with good corrosion resistance, heat resistance, low temperature strength and mechanical characteristics; stamping, bending and other heat machining is good, no heat treatment hardening phenomenon (use temperature-196℃ ~800℃). Corrosion resistance in the atmosphere, if it is an industrial atmosphere or heavy pollution area, the need to timely clean to avoid corrosion. Suitable for the processing, storage, and transportation of food products. Good machining performance and weldability. Plate heat exchangers, bellows, household goods (class 1,2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtub), auto accessories (windshield wipers, mufflers, mold products), medical appliances, building materials, chemistry, food industry, agriculture, ship parts, etc. The content of strictly controlled 304 stainless steel, can also be known as food grade 304 stainless steel

Most use requirements are to maintain the original appearance of the building for a long time. When determining the type of stainless steel to be selected, the main consideration is the aesthetic standards required, the corrosive nature of the local atmosphere and the cleaning system to be adopted. However, other applications are increasingly only looking for structural integrity or impermeability. For example, the roofs and side walls of industrial buildings. In these applications, the construction cost of the owner may be more important than the aesthetic, and the surface is not very clean. Use of a 304 stainless steel in a dry indoor environment works quite well. But, in the countryside and in the city to maintain its appearance outside, it needs to be cleaned often. In heavily polluted industrial and coastal areas, surfaces can be very dirty and even rust.

But to obtain the aesthetic effect in the outdoor environment, it is necessary to use nickel-containing stainless steel. Therefore, 304 stainless steel is widely used in curtain wall, side wall, roof and other architectural purposes, but in the severely eroded industrial or Marine atmosphere, it is best to use 316 stainless steel. Stainless steel sliding door, people have fully realized the advantages of using stainless steel in structural applications. Several design guidelines include the 304 and 316 stainless steel. This steel is included in the European Code because the 2205 "duplex phase" combines high atmospheric corrosion resistance with high tensile strength and elastic limit strength. Product shapes Actually, stainless steel is manufactured in full standard metal shapes and sizes, and there are many special shapes. The most commonly used products are made of sheet plate and strip steel, and also use medium-thickness plate to produce special products, for example, to produce hot-rolled structural steel and extruded structural steel. There are also round, elliptical, square, rectangular, and hexagonal welded pipes or seamless steel pipes and other forms of products, including profiles, bars, wires, and castings.

product standard

International stainless steel marking method

The American Iron and Steel Institute uses three digits to mark various standard-grade malleable stainless steel.among:

The ① austenitic stainless steel is marked with the 200 and 300 series number, for example, certain more ordinary austenitic stainless steel is marked with 201,304,316, and 310,

② ferrites and martensite-type stainless steel are indicated in the numbers of the 400 series.

③ iron body stainless steel is marked with 430 and 446, martensite stainless steel is marked with 410,420, and 440C,

The ④ duplex (austenitic-ferrite), stainless steel, precipitated and hardened stainless steel, and high alloys with less than 50% iron content are usually named by the patent name or trademark.

4). Standard classification and grading

4-1 Classification: ① national standard GB ② industry standard YB ③ local standard ④ enterprise standard Q / CB

4-2 Classification: ① Product standard ② Packaging Standard ③ method Standard ④ basic standard

4-3 Standard level (three levels): Y: International advanced level Level I: International general level H: domestic advanced level

4-4 National standard

GB1220-2007 Stainless Steel Bar (Grade I) GB4241-84 Stainless Steel Welding Plate Park (Grade H)

GB4356-2002 Stainless Steel Welding Plate Park (Grade I) GB1270-80 Stainless steel pipe (Grade I)

GB12771-2000 Stainless Steel welded pipe (Grade Y) GB3280-2007 Stainless Steel cold plate (Grade I)

GB4237-2007 Stainless Steel Hot Plate (Class I) GB4239-91 Stainless Steel Cold Belt (Class I)

etching method

Etching processing method, is in the stainless steel surface using screen printing acid-resistant steel protective film, and then with ferrous chloride liquid etching, to form an artistic pattern.

Spray color method

Color spray method is the injection of color particles after screen printing, forming the pear skin-like surface, forming an artistic pattern.

process engineering

The process of stainless steel products color spraying art processing process is: stainless steel products silk printing etching alkali processing wire printing oxidation coloring alkali processing finished products.

Stainless steel products etching art processing process is: stainless steel products silk printing etching alkali processing oxidation coloring finished products.

The chemical coloring method of stainless steel does not use pigments and dyes, but the stainless steel is soaked in the heated concentrated chromium sulfate solution for chemical coloring, which is characterized by good food resistance. The ink used in this processing method should have a very strong acid resistance, and generally use the UV sulfide ink with special properties suitable for the treatment process.

Stamping processing

Stainless steel products, especially stainless steel belt, many times the most original factory processing method is to use punch for stamping products. Stressing includes straight punching and stretching two ways, generally the hardness of less than 1 / 2 is the use of stretching and bending, the hardness is higher than 1 / 2 partial hard, are straight blunt.

Rusty cause

304 Stainless steel material rust phenomenon, may have the following reasons:

chloridion

Chlorine is widespread, such as salt / sweat / sea / sea / soil, etc. Stainless steel in the presence of chloride ions in the environment, corrosion is fast, even more than ordinary low carbon steel. So the use of stainless steel environment requirements, and need to often wipe, remove dust, keep clean and dry. There is an example in the United States: an enterprise with an oak container containing a chlorine ion solution, the container has been used for nearly 100 years, in the 1990s plan to replace, because the oak material is not modern enough, using stainless steel replacement 16 days after the container due to corrosion leakage.

solution treatment

Alloy elements do not dissolve into the matrix, resulting in a low alloy content of the matrix tissue and poor corrosion resistance.

intercrystalline corrosion

This titanium-free and niobium material has a tendency to intercrystalline corrosion. Adding titanium and niobium, combined with stable treatment, reduces intercrystalline corrosion. In the air or chemical corrosion medium can resist corrosion of a high alloy steel, stainless steel is a beautiful surface and good corrosion resistance, do not have to pass plating and other surface treatment, and play the inherent surface performance of stainless steel, used in many aspects of steel, usually known as stainless steel. Representative performance of 13 chromium steel, 18-8 chromium nickel steel and other high alloy steel. From the metallographic point of view, because the stainless steel contains chromium, the surface forms a very thin chromium film, and this film is isolated from the oxygen invaded in the steel to play a corrosion-resistant role. To maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 12% chromium. For occasions where welding is required. The lower carbon content reduces the amount of carbon precipitated in the thermal impact area near the weld, which may cause intercrystalline corrosion (welding erosion) of stainless steel in some environments.

Surface mark phenomenon

Surface mark phenomenon refers to the 304 stainless steel deep, wire installation or point-shaped dent mark defects occur on the product surface after 304 stainless steel deep processing or processing product grinding.

Reason: there are foreign bodies on the surface and mold surface, and scars on the surface of the pressing side mat.

Countermeasures: Remove foreign bodies, scars before processing, and orange peel can also be removed by sufficient grinding.

Orange peel phenomenon refers to the phenomenon that 304 stainless steel molding products produce the surface of the shape like orange peel in grinding or other cases.

Reason: grinding is not sufficient, the larger the processing, the more serious, raw material grain coarse, heat treatment softening.

Countermeasures: Fully grind deep processing products, select suitable heat treatment conditions, and control the grain size of raw materials.

304 Stainless Steel Corrugated Roofing Sheets For Electrical Appliances

304 Stainless Steel Corrugated Roofing Sheets For Electrical Appliances

304 Stainless Steel Corrugated Roofing Sheets For Electrical Appliances

304 Stainless Steel Corrugated Roofing Sheets For Electrical Appliances

Position in stainless steel category table

200 series
Grade chemical composition (%) mechanic performances
C Si Mn P S Ni Cr N Cu Y.S(N/mm2) T.S(N/mm2) Elog(%) HRB
201(1%nickel) ≤0.15 ≤1.00 8∽11 ≤0.060 ≤0.030 0.9∽1.5 15∽17 ≤0.25 1.5∽2 ≥310 ≥655 ≥35 ≤105
202(4%nickel) ≤0.15 ≤1.00 6∽9 ≤0.060 ≤0.030 3.5∽5 15∽17 ≤0.25 1.5∽2 ≥260 ≥620 ≥40 ≤100
The specification of type 201&202 in conformity with Mill Standard
300 series
Grade chemical composition (%) mechanic performances
C Si Mn P S Ni Cr Mo Y.S(N/mm2) T.S(N/mm2) Elog(%) HRB
304 ≤0.08 ≤0.75 ≤2 ≤0.045 ≤0.030 8∽10 18∽20 ≥205 ≥520 ≥40 ≤90
301 ≤0.15 ≤1.00 ≤2 ≤0.045 ≤0.030 6∽8 16∽18 ≥205 ≥515 ≥40 ≤95
316 ≤0.08 ≤1.00 ≤2 ≤0.045 ≤0.030 10∽14 16∽18 2∽3 ≥205 ≥515 ≥40 ≤90
316L ≤0.03 ≤1.00 ≤2 ≤0.045 ≤0.030 12∽15 16∽18 2∽3 ≥170 ≥480 ≥40 ≤95
The specification of type 301,302,304,304L,309S,310S,316,316L,321,347 in conformity with ASTM & JIS criteria
400 series
Grade chemical composition (%) mechanic performances
C Si Mn P S Ni Cr Mo Y.S(N/mm2) T.S(N/mm2) Elog(%) HRB
430 ≤0.12 ≤1.00 ≤1 ≤0.040 ≤0.030 16∽18 ≥450 ≥205 ≥22 ≤88
The specification of type 430,410,420J1.420J2 in conformity with ASTM & JIS criteria
630 series
Grade chemical composition (%) mechanic performances
C Si Mn P S Ni Cr Mo Nb Y.S(N/mm2) T.S(N/mm2) Elog(%) HRB
630 ≤0.07 ≤1.00 ≤1.00 ≤0.035 ≤0.030 6.50∽7.50 15.50∽17.50 0.15∽0.45 ≥450 ≥205 ≥22 ≤88
The specification of type 630 in conformity with ASTM & JIS standard

304 Stainless Steel Corrugated Roofing Sheets For Electrical Appliances

Wuxi T T Stainless Steel Co., Ltd. was incorporated in Nov.2011.Our company is engaged in stainless plate ,stainless sheet ,stainless tube ,stainless angle steel ,stainless channel beam ,stainless flat steel ,stainless round bar steel ,stainless section bars products .We concentrate not only on stainless steel products wholesale,warehouse ,but also on stainless steel logistics service all over the world .

  • We focus on producing qualified stainless products ,we are more experienced in our industry . We had been being witnessed our business growth in past 15 years by our initial business partners in China .
  • We have an experienced & satisfactory laser cutting technician & engineers team ,we can provide tailored stainless products service as per client’s special demands .We have 20000W large scale stainless steel laser cutting machine(stainless steel cutting 50mm),9M stainless steel cutter ,10 double machine linkage bending machine ,sheet rolled welding machine ,coining machine ,mirror machine ,wire drawing ,plating ,stainless steel already made products fabrication ,etc .
  • Our doctrine :honesty & faith, innovation & value .Our doctrine is always based on presenting customer’s valuation ,thereof our development & business growth originate from it .We adopt international current ISO9001 management system ,we are inclined to meet challenges which arose from business chance & decided to make progress through unsteady markets all over the world .We are going to forge “Shuangti” brand ,let it be a leading corporate in stainless steel industry.

Main Products

ⅠStainless Steel Plate.

Stainless steel plate surface is shining & polish,it has great fabricability with toughness & mechanic strength .It can anti-corrode acid or alkaline gas ,solution & other agents corrosion .

Stainless steel is a kind of alloyed steel ,it’s not inclined to rust .It has wide applications in many industries .It has many merits in anti-corrosion ,heat-resistance ,low temperature resistance and good performances of cold mechanic processing .

By the material divisions ,it can be divided into 201,304,304L,316L,310S,etc .

In conformity with executing criteria GB/T3280-2009 “Stainless Steel Cold Rolled Sheet & Ribbon”.

Universal specification dimension ;1000×2000,1220×2440,1500×3000,1500×6000,

1800×6000.It also can be tailored as per fabricated pieces .

Normally international cold rolled stainless steel sheet thickness is from 0.30-5.00 mm;

Hot rolled stainless steel plate thickness :3-16mm.Other irregular pieces thickness can be

Tailored as per client’s special requirements .

GB/T4237-2009 “hot rolled stainless steel plate & ribbon”.

ASTM A240/240M-10 “Pressure vessel and general purposeheat-refractory steel plate”

Π Stainless Steel Pattern Products

Many patterns available for options ,it’s suitable for stair footplates fabrication ,or laying plant anti-corrosion ,abrasion resistant floor

Ш Catch basin & gutter.

All kinds of dimension or thickness can be tailored as per customer’s special requirements .

Ⅳ Stainless steel angle steel ,channel beam ,flat steel,round bar steel ,tube,

Section bars .

Ⅴ. Stainless plate bending

Processing all kinds of irregular dimension pieces

Ⅵ. Stainless steel sheet circulating welding

Air duct production .

Ⅶ Processing capacity Leading 20000W large scale laser cutting machine .

Cutting pieces thickness 50mm by laser is so fast ,high efficient with full automation ,less effective on heat & local deformation .It will be helpful in improving accuracy .It can meet the needs of pieces processing diversities ,and can improve processing capacities ,and aid customers to save costs .

Ⅷ. Stainless steel sheet cutting & bending .

Cutting ,bending & circulating equipment can process length 9 M pieces .It can be

Utilized in all kinds of filling equipment ,air duct pipes .It can provide large

Scale ,precise semi-products processing demands.

Ⅸ. Stainless steel surface processing .

Stainless steel mirror machining ,wire drawing ,plating procession .

Ⅹ. Aluminium alloyed products .

Ⅺ. Alloyed steel

FAQ

Q1. Can I have a sample order for your products ?

A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

Q2. What about the lead time?

A: 3-5 days for Sample preparing ,8-10 working days for mass production.

Q3. Do you have any MOQ limit for stainless steel products ?

A: Low MOQ, 1pc for sample checking is available.

Q4. How do you ship the goods and how long does it take to arrive?

A: Ship by DHL, UPS, FedEx or TNT. It takes 3-5 days to arrive. Airline and sea shipping also optional.

Q5. How to proceed an order for stainless steel products ?

A: Firstly let us know your requirements or application.

Secondly We quote according to your requirements or our suggestions.

Thirdly customer confirms the samples and places deposit for formal order.

Fourthly We are going to arrange the production.

Q6. Is it OK to print my logo on stainless products which we had ordered before from your company ?

A: Yes. Please inform us formally before our production.

Q7: Do you offer guarantee for the products?

A: Yes, we offer 1 years warranty to our products.

Q8: How to deal with the faulty?

A: Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.001%.

Secondly, during the guarantee period, we will send new stainless steel products with new order for small quantity. For defective batch products, we will recall them and resend them to you or we can discuss the solution including re-call according to real situation.

Q9. What main products are you ready to provide to us ?

1 stainless steel hot rolled plate

2. Stainless Steel cold rolled sheet

3. Stainless steel pipes or tubes .

4. Stainless Steel angles ,beam ,channels .

5. Stainless round bars

6. Stainless processing pieces .

7. Stainless laser cutting irregular pieces .

8. Aluminium plates

9. Alloyed steel

10. Nonferrous metals .

Q10 payment terms :

Normally we accept TT , LC , DP ,west union , paypal .


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