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Home ProductsDuplex Stainless Steel Pipe

Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790

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Good quality Stainless Steel Elbow for sales
Good quality Stainless Steel Elbow for sales
In the latest vendor rating, TOBO won the excellent rating, it is good, will continue to cooperate.

—— Brazil---Aimee

ASTM A213 T9 Alloy steel pipe ,Stable quality , good price, excellent serive, TOBO GROUP is our trustworthy partner .

—— Thailand ---Dave Mulroy

ASTM A182 F55 Super Duplex Flange ,Good quality , we like that ! And delivery time in time also ,very professional.

—— USA ---Alfaro

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Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790

China Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790 supplier
Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790 supplier Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790 supplier Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790 supplier Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790 supplier Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790 supplier

Large Image :  Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790

Product Details:

Place of Origin: China/Japan/Germany
Brand Name: TOBO/TPCO/TISCO/VALIN/METAL
Certification: ISO/PED/TUV/SGS/LR/BV
Model Number: SN20140403163322889

Payment & Shipping Terms:

Minimum Order Quantity: 0.5-1 tons
Price: negotiable
Packaging Details: in plastic bags then in bundles
Delivery Time: According to the qty
Payment Terms: T/T, L/C, Western Union, MoneyGram
Supply Ability: 6000TONS/MONTH
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Detailed Product Description
Standard:: ASTM/ASME A789/SA789, A790/SA790,A450,A530 Color: White Silver Gold
Types:: Duplex Stainless Steel Pipe / Tube Material Grade: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),
Outer Diameter: 6mm-710mm

Seamless Duplex Stainless Steel Pipes, ASTM / ASME A789 / SA789, A790 / SA790, A450, A530

Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),

UNS32760(1.4501)

 

Chemical Composition

Grade

C

 max

Si

max

Mn

max

P

max

S

max

Cr

Ni

Mo

N

UNS S32750

0.030

0.8

1.2

0.030

0.015

24.0-26.0

6.0-8.0

3.0-5.0

0.24-0.32

UNS S31803

0.030

1.0

2.0

0.020

0.020

21.0-23.0

4.5-6.5

2.5-3.5

0.08-0.20

UNS S31500

0.030

1.0

1.2-2.0

0.030

0.030

18.0-19.0

4.5-5.5

2.5-3.5

0.05-0.10

 

 Physical Properties

Grade

Y.S.MPa min

T.S.Mpa min

Elongation %

Hardness HRC

UNS S32750

550

800

15

20

UNS S31803

450

620

25

20

UNS S31500

440

630

30

20

 

Duplex Stainless Steel Pipe Application:

Chemical processing, Transport and Storage.

Oil and gas exploration and offshore rigs.

Oil and gas refining.

Marine environments.

Pollution control equipment.

Pulp and paper manufacturing

Chemical process Plant

 

Some of the quality tests carried out by us includes:

Corrosion Test

Conducted only when specially requested by the client

Chemical Analysis

Test done as per required quality standards

Destructive / Mechanical Testing

Tensile | Hardness | Flattening | Flare | Flange

Reverse-bend and Re. flat tests

Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end

Eddy Current Testing

Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System

Hydrostatic Testing

100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .

Air Under Pressure Test

To check any evidence of air leakage

Visual Inspection

After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections

 

Supplementary Testing : Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:

  • Eddy Current Testing
  • O.P Testing

Radiography Testing

  • Corrosion Testing
  • Micro Testing

Macro Testing

  • IGC Testing
  • Ultrasonic testing

Liquid Penetrate testing

 

Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790Heavy Wall Duplex Stainless Steel Pipes ASTM / ASME A789 / SA789, A790 / SA790


 
 
 
 

Contact Details
TOBO STEEL GROUP CHINA

Contact Person: ellen

Tel: +8615821287672

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