Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008

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25 m.t.
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5000 m.t./month

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Product Description:

1、Structure of Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Description:

    Stainless steel welded pipe is actually a cover term, covering a wide range of alloy and making them suitable for different attributes that are used in a very wide and large numbers of different industries. Stainless steel pipe is resistant to erosion, highly flexible, powerful, easy to use, and can be done in distinct approaches, which means that more and more stainless steel was used as a construction material for large-scale, high impact buildings. It can be molded, rolling, and it can create amazing shapes to make it perfect, It is used as experimental buildings, The use of steel pipe welding of large stainless steel covers other examples.



2、Main Features of the Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008:


• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

•Reasonable price 




3、Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Images:






4、Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008 Specification:


composition of duplex stainless pipe(%) 


Steel grade
C≤Mn≤Si≤S≤P≤CrNiMoCu≤N
S32750((SAF2507) 00Cr22Ni7Mo4N0.031.200.800.0200.03524.0/ 26.06.0/ 8.03.0/ 5.00.500.24/ 0.32
S31803(SAF2205)

 

00Cr22Ni5Mo3N
0.032.001.00.020.03021.0/ 23.04.50/ 6.502.50/ 3.50
0.08/ 0.20
S31500(3RE60)

 

00Cr18Ni5Mo3Si2
0.031.2/ 2.001. 4/ 2.000.0300.03018.0/ 19.04.25/ 5.252.50/ 2.00
0.05/ 0.10


Mechanical Properties of duplex pipe:


 Steel Grade
Heat Treatment Temperature ℃Ab(MPa)≥As(MPa)≥∮≥brinellrockwell
S32750(SAF2507)

 

00Cr22Ni5Mo3N
1025-1125 water
8005501531032
S31803(SAF2205)

 

00Cr22Ni5Mo3N
1020-11006204502529030.5
S31500(3RE60)

 

00Cr18Ni5Mo3Si2
980-10406304403029030.5


Details:


Outer Diameter

6mm--159mm

Thickness

0.3mm - 3.0mm

Length

6m or as customers' request

Surface

180G, 320G, 400G Satin / Hairline

400G, 500G, 600G or 800G Mirror finish

Application

Decoration construction, upholstery, industry instrument

Test

Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT




 5、FAQ of Stainless Steel Welded Pipe duplex ASTM A790/ASTM A789 GB/T21832-2008:

 

How is the quality of your products?
    Our products are manufactured strictly according to national and internaional standard, and we take a test on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.


How about price?
    Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

Why should you chose us?
    Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

Any question, pls feel free to contact us !


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Q:310 stainless steel resistance to high temperature?
Features: suitable for making all kinds of furnace components, with a maximum temperature of 1200 degrees, continuous use temperature of 1150 degrees CelsiusUses: furnace materials, materials for automotive cleaning equipment
Q:What's lined with stainless steel?
Stainless steel lining is a method of trenchless repair of underground pipes.
Q:What is stainless steel decorative tube? What uses does it have?
Is a hollow steel strip, used as pipe conveying fluid, such as oil, gas, water, gas, steam, in addition, the bending and torsional strength of the same, the weight is light, so it is widely used in the manufacture of machinery parts and engineering structures. It is also used to produce all kinds of conventional weapons, guns, shells and so on.
Q:Comparison of ring type connection and argon arc welding of stainless steel pipe
Ring type stainless steel pipe connecting end design section of successive and sealing section shape was stepped through the hydraulic tool connection exerts a pressure on the radial deformation of the pipe, stable and sealed sections of Zuohuan extruded and its circumference concave, concave section into which the pipe with forced recess annular snap fastener
Q:Are stainless steel tubes and galvanized steel tubes the same?
It's quite different!The stainless steel pipe itself is made of stainless steel, and galvanized steel pipe is coated with zinc on the surface of the carbon steel tube
Q:Stainless steel and stainless steel pipe inside and outside polishing off, what is the difference?
The main difference between these materials is that the chemical composition is different. The corrosion resistance of 316L is stronger than that of 304 and 304L, and that of L indicates lower carbon content and stronger flexibility. Choose the key depends on the things inside, corrosion is not big, how to use the environment, there are high pressure requirements are not high.
Q:What's the easiest way to distinguish between stainless steel 202 and 304?
Not bad money to use 304 of the durability, a few years later, if the price increases, maybe scrap can sell back the cost of moneyIdentification: the only way for you is to go to Taobao to buy potions and estimate where your hardware parts might be soldOther methods are not good, the naked eye can not tell, we are not able to distinguish between the industry are relying on syrup202 can also be used but a guarantee and profiteers will give you for 201 anyway you do not201 did not rust for 2-3 years
Q:What is the difference between the stainless steel tube and tube rolling
Stainless steel stands for material. According to the production process, steel pipe, sub welded pipe, hot rolled pipe, cold rolled pipe and cold drawn pipe. What you say should refers to the cold drawn pipe drawing. Pipe called cold drawn, round steel called cold drawn. Compared with these processes, cold drawing and cold rolling are close to each other. The accuracy is higher, because of the plastic deformation, the mechanical properties are better. The specific difference is that the cold rolling is less than the cold drawn processing track, the accuracy and surface roughness are higher, and the processing cost is high. Cold drawing hardness is high, processing cost is low, processing will be wasted.
Q:Where is the difference between seamles steel pipe and welded pipe?
For the steel to withstand the pressure to the hydraulic test to test its ability and quality, leakage, soaked or expansion for qualified does not occur at the prescribed pressure, some steel according to the requirement of standard or edge test, flaring test and flattening test.
Q:Why pickling before cleaning stainless steel pipe oil?
On the premise of oxide, a good foundation for the formation of passive film is made, which makes the passivation film more compact and improves the passivation effect!

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