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:Water and electricity thin wall stainless steel tube 304 material delta 2 what does that mean?
304 stainless steel is a universal stainless steel material, antirust performance than the 200 series of stainless steel material stronger.
Q:What's the difference between stainless steel pipe or stainless steel composite pipe?
The stainless steel composite pipe is iron pipe. The outside is plated with stainless steel. It is heavy, but it is easy to rust for a long time,
Q:316 stainless steel pipe wall mirror polishing, the smaller the roughness, the better.
From what you have described above, the difficulty lies in the roughness of the interior.You choose to finish the stainless steel tube, 2-3 finishing tubes, and then polished by solid polishing agent.
Q:Is galvanized steel pipe stainless steel pipe?
No, the steel pipe is generally divided into stainless steel pipe, welded steel pipe, spiral steel pipe, low alloy steel pipe and so on.
Q:Stainless steel welded pipe or seamless pipe expensive?
From the brand can understand: domestic grade Cr smaller numbers are more expensive, the sum of Cr after the larger the number the more expensive, more expensive Cr symbols and so on. Foreign steel also has some rules: such as the stainless steel, the same series of numbers of bigger, longer, more expensive and more letters.
Q:Is food grade stainless steel GB9684 304?
Food grade stainless steel is in line with the GB9684 standard stainless steel.
Q:Can magnets attract stainless steel tubes?
Stainless steel is becoming more and more popular because of its beautiful appearance, corrosion resistance and not easy to damage. More and more pots, city sculpture, architecture, decoration room etc. the use of stainless steel, stainless steel on discrimination but people do not know, some customers buy stainless steel kitchenware, stainless steel utensils with magnets in to try to try. It is stainless steel that attracts the magnet, but stainless steel can not be sucked. It seems that there is a misunderstanding about stainless steel.
Q:How can stainless steel and copper pipe be welded?
First, try the test before burning. The brass is directly burned to the stainless steel tube. First feel the heat and see what the stainless steel likes to adhere toWhen stainless steel is not red, copper is not adheredWhen stainless steel is red, do not stick copperOnly when stainless steel is red, copper paste is preferredTherefore, when welding, we must master the size of the furnace, thin and thin pipe, fire should be adjusted to small crude pipe, on the contrary, they feel the proper heat
Q:What is the difference between stainless steel seamless tube and stainless steel welded pipe?
Stainless steel welded pipe is also a hollow section of steel, but it is welded through the plate into the steel pipe, so there is a welded steel pipe welding gap.
Q:What are the differences in the properties of hot-rolled and cold-rolled stainless steel tubes?
Stainless steel tube with hot and cold points, hot rolling is made by stainless steel tube billet heated to red state, through processing a mold, which is cold-rolled stainless steel pipe billet collocation through different mould at room temperature, finally by drawing rolling method, stainless steel tube working together the size of the need to.

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