Stainless steel pipes 316 pipe

Ref Price:
Loading Port:
China Main Port
Payment Terms:
TT OR LC
Min Order Qty:
-
Supply Capability:
-

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable", is a steelalloy with a minimum of 10.5%[1]chromium content by mass.

Stainless steel does not readily corrode, rust or stain with water as ordinary steel does. However, it is not fully stain-proof in low-oxygen, high-salinity, or poor air-circulation environments.[2] There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and corrosion resistance are required.

Stainless steel differs from carbon steel by the amount of chromium present. Unprotected carbon steel rusts readily when exposed to air and moisture. This iron oxide film (the rust) is active and accelerates corrosion by forming more iron oxide; and, because of the greater volume of the iron oxide, this tends to flake and fall away. Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents further surface corrosion by blocking oxygen diffusion to the steel surface and blocks corrosion from spreading into the metal's internal structure, and, due to the similar size of the steel and oxide ions, they bond very strongly and remain attached to the surface.[3]

Passivation occurs only if the proportion of chromium is high enough and oxygen is present.

Oxidation[edit]

High oxidation resistance in air at ambient temperature is normally achieved with additions of a minimum of 13% (by weight) chromium, and up to 26% is used for harsh environments.[14] The chromium forms a passivation layer of chromium(III) oxide (Cr2O3) when exposed to oxygen. The layer is too thin to be visible, and the metal remains lustrous and smooth. The layer is impervious to water and air, protecting the metal beneath, and this layer quickly reforms when the surface is scratched. This phenomenon is called passivation and is seen in other metals, such as aluminium and titanium. Corrosion resistance can be adversely affected if the component is used in a non-oxygenated environment, a typical example being underwater keel bolts buried in timber.

When stainless steel parts such as nuts and bolts are forced together, the oxide layer can be scraped off, allowing the parts to weld together. When forcibly disassembled, the welded material may be torn and pitted, an effect known as galling. This destructive galling can be avoided by the use of dissimilar materials for the parts forced together, for example bronze and stainless steel, or even different types of stainless steels (martensitic against austenitic). However, two different alloys electrically connected in a humid environment may act as Voltaic pile and corrode faster. Nitronic alloys made by selective alloying with manganese and nitrogen may have a reduced tendency to gall. Additionally, threaded joints may be lubricated to prevent galling.

Acids[edit]

Stainless steel is generally highly resistant to attack from acids, but this quality depends on the kind and concentration of the acid, the surrounding temperature, and the type of steel. Type 904 is resistant to sulfuric acid at room temperature, even in high concentrations, type 316 and 317 are resistant below 10% and 304 should not be used at any concentration. All types of stainless steel resist attack from phosphoric acid, 316 and 317 more so than 304; and Types 304L and 430 have been successfully used with nitric acid. Hydrochloric acid will damage any kind of stainless steel, and should be avoided.[15]

Bases[edit]

The 300 series of stainless steel grades is unaffected by any of the weak bases such as ammonium hydroxide, even in high concentrations and at high temperatures. The same grades of stainless exposed to stronger bases such as sodium hydroxide at high concentrations and high temperatures will likely experience some etching and cracking, especially with solutions containing chlorides.[15]

Organics[edit]

Types 316 and 317 are both useful for storing and handling acetic acid, especially in solutions where it is combined with formic acid and when aeration is not present (oxygen helps protect stainless steel under such conditions), though 317 provides the greatest level of resistance to corrosion. Type 304 is also commonly used with formic acid though it will tend to discolor the solution. All grades resist damage from aldehydes and amines, though in the latter case grade 316 is preferable to 304; cellulose acetate will damage 304 unless the temperature is kept low. Fats and fatty acids only affect grade 304 at temperatures above 150 °C (302 °F), and grade 316 above 260 °C (500 °F), while 317 is unaffected at all temperatures. Type 316L is required for processing of urea.[15]

Electricity and magnetism[edit]

Similarly to steel, stainless steel is a relatively poor conductor of electricity, with a lower electrical conductivity than that of copper.

Ferritic and martensitic stainless steels are magnetic. Austenitic stainless steels are non-magnetic.

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:Under what circumstances can the stainless steel pipe be welded by argon arc, and under what conditions can the arc welding be used?
Arc welding is the most widely used welding method in industrial production, it is to use the principle of arc discharge (commonly known as arc combustion) the heat generated by the electrode and the work piece and the formation of weld in melting each other after condensation, so as to obtain the solid joint welding process. The scope of application of electric arc welding is very extensive, such as bucket teeth of excavator, loader, bulldozer blade blade plate, screw conveyor, crusher, mixer blade, rail, forging, gear wheel flange, all kinds of mold, slag crusher, ball mill, machine tool equipment etc..
Q:What factory uses industrial stainless steel tube to be more?
The automotive industry also has a lot of demand for stainless steel pipes. The main use of stainless steel is the exhaust system, which accounts for more than 1/2 of the total amount of stainless steel in the automobile, and 80% of the ferritic stainless steel. The exhaust gas from the automobile engine flows through the exhaust manifold, front pipe, hose, converter, and central pipe and finally flows out of the muffler. Commonly used in the exhaust system are 409L, 436L and so on. Automobile muffler mainly uses stainless steel pipe. According to estimates, the use of stainless steel pipes in the car accounted for the entire downstream of the stainless steel pipe about 1.5% of the amount, while the use of stainless steel seamless tubes and welded pipe ratio of about 2:1.
Q:What's the easiest way to distinguish between stainless steel 202 and 304?
They all belong to the austenitic stainless steel, 202 with Mn and N to replace part of nickel, so as to obtain the mechanical properties and good corrosion resistance, is a new type of stainless steel nickel, his strength at room temperature is higher than 304, there are no good oxidation resistance and magnetic strength in medium temperature below 800 degrees. Potions don't fly
Q:What is the difference between stainless steel tube 304L and 304N?
304L is a variety of 304 stainless steel with low carbon content, used for occasions where welding is required.
Q:What's the difference between stainless steel decorative pipes and polished stainless steel pipes?
Stainless steel decorative tubes are mostly stainless, iron does not contain nickel, and so on, the material is slightly worse. Mainly used for interior decoration, such as interior railings, stair guards and railings, windows and so on, the thickness of the steel pipe is generally relatively thin.
Q:What's the difference between stainless steel pipe or stainless steel composite pipe?
Stainless steel is also divided into several kinds of 200201300301304,The market is generally 301 material, 304 of the best results, followed by 301.
Q:What brand of stainless steel pipe cutting machine is good?
Cut stainless steel tube, choose what brand is good, not the most important, first of all depends on what method to cut the best, the current cutting methods are saw blade, saw blade, laser, plasma, turning tools and so on.
Q:What are the weld sleeves for stainless steel pipes?
The process is the same as you set for the pipe welding material quota, stainless steel drop can, on the line in the budget when a show
Q:Are stainless steel pipelines buried in need of corrosion protection?
Pipeline buried environment factors: underground laying requirements of 3, one is corrosion protection, two is elevation, slope, and three is density. If it is electrochemical reaction, the design should have technical instructions or preventive measures.
Q:Mirror stainless steel tube 60*60 how much is one meter?
Single weight multiplied by unit price.Weight calculation formula of single round stainless steel tube: (outside diameter actual thickness) * actual thickness *0.02491* length,

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range