Stainless Steel Tube

Duplex Stainless Steel Pipe/Tube (Stainless Steel Duplex Pipe/Tube)

    OD: 8mm - 1000mm


    Wall Thickness: from 0.3 mm


    Grade: 630 / 631 / 2205 / 2507 / 17-4PH

Shanghai Metal Corporation is a leading duplex stainless steel pipe/tube (stainless steel duplex pipe/tube) manufacturer and supplier.

The duplex stainless steel tube has good welding performance. Compared with ferritic stainless steel and austenitic stainless steel, it is not like the welding heat affected zone of ferritic stainless steel, and the plastic toughness is greatly reduced due to severe grain coarsening. Nor is it sensitive to hot cracking of welds like austenitic stainless steel.

Due to its special advantages, duplex stainless steel is widely used in petrochemical equipment, seawater and wastewater treatment equipment, oil and gas pipelines, papermaking machinery and other industrial fields. In recent years, it has also been studied in the field of bridge load-bearing structures. Prospects.

Duplex stainless steel is half of the ferrite phase and austenite phase in its solidified structure, and the minimum phase content may be up to 30%.

If you want to know more about our stainless steel products or duplex stainless steel pipe/tube (stainless steel duplex pipe/tube) price please feel free to contact us, we will reply you within 24 hours.


Specifications of Duplex Stainless Steel Pipes/Tubes:

  

1. Standard: ASTM
2. Grade: 630 / 631 / 2205 / 2507 / 17-4PH
                ASTM A789, ASTM A790, ASTM A450, ASTM A530,
                GB/T 14976, GB/T 14975, GB/T 13296, etc
3. OD: 8mm-1000mm
4. Wall thickness: 0.3mm-30mm
5. Length: max.18000mm or as demand 

6. Surface finish: Polishing (180#,220#,240#,320#400#,600#), Hairline, acid pickled, etc.



Production line




 

Wall Thickness Tolerance of Duplex Stainless Steel Pipes:


 

Manufacturing Process of Stainless Steel Pipes/Tubes:

The process commences with the formation of welded mother tube on the tube mill from imported and tested prime quality stainless steel strips. The latest TIG multi electrode welding technique is employed for superior weld quality and 100% Fusion, with argon purging, No filler metal added.

Packaging of Stainless Steel Tubes/Pipes:

Shanghai Metal Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.

1)Shanghai Metal Standard

2)Customization

Applications of Duplex Stainless Steel Pipes/Tubes:Applications of Duplex Stainless Steel Pipes/Tubes


>Petroleum transportation

>Effluent treatment

>Oil Refining

>Air cooled heat exchanger

>Cooling spray device

>Chemical industry

>High temperature resistant transmission fluid pipe in power station

>Ship with pressure pipe

>Exhaust purification device

>Handrail, Construction and ornament

etc.

 

FAQ

Q: Can you do polished finish for the tubes/pipes?

A: Yes, for welded tubes/pipes, we can do mirror polishing, 600# polishing, 500# polishing, 320# polishing, 240# polishing and so on, brushed finish is also available. For seamless tubes/pipes, normally the surface is pickled finish, while brushed finish is also doable.


Q: What’s your standard package?

A: Our standard package is waterproof plastic bags with wraps. For advanced packing, we can provide round paper tube for each tube, and wooden/metal case for exterior packing.


Q: Where’s your main market?

A: South America, Mid-east, South-east Asia, Europe and so on.


Q: Do you also have the accessories for the tubes?

A: Yes we can provide the accessories too.


Q: What length is your standard length? Can I have the tubes/pipes cut into the length I want?

A: Our standard length is 3meter, 4meter, 5meter, 6meter. If you length is less than 3meter, we will have to run an additional processing for cutting which will bring some more costs. The minimum length is 500mm. For seamless tubes, we can make maximum to 12, 13meters.

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