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  • TOBO STEEL GROUP CHINA
    Brazil---Aimee
    In the latest vendor rating, TOBO won the excellent rating, it is good, will continue to cooperate.
  • TOBO STEEL GROUP CHINA
    Thailand ---Dave Mulroy
    ASTM A213 T9 Alloy steel pipe ,Stable quality , good price, excellent serive, TOBO GROUP is our trustworthy partner .
  • TOBO STEEL GROUP CHINA
    USA ---Alfaro
    ASTM A182 F55 Super Duplex Flange ,Good quality , we like that ! And delivery time in time also ,very professional.
Contact Person : Joy Wang
Phone Number : 0086-21-31261985
WhatsApp : +8613524668060

Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760

  • Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760
  • Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760
  • Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760
  • Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760
  • Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760
Place of Origin China/Japan/Germany
Brand Name TOBO/TPCO/TISCO/VALIN/METAL
Certification ISO/PED/TUV/SGS/LR/BV
Model Number S31803/S31500/S32750
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,
Supply Ability 6000TONS/MONTH
Product Details
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-21.3mm / 0.8mm-4mm
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Product Description
Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760

 
 
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

 

Inspection & Test
1.100% PMI, Spectro Chemical Analysis Test for Raw Material
2.100% Dimension & Visual Examination 
3. Mechanical Properties Test Include Tension Test Flattening Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test
4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test  (ET or UT) 
5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)
6.Straightness Test  (optional)
7.Roughness Test (optional)
8.Intergranular Corrosion Test(optional)
9.Impact Test (optional)
10.Grain Size Determinations (optional)
NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.

 

 

Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760Pickled Annealed Super Duplex SS Seamless Pipe ASTM A789 A790 UNS32750 S32760
 
 
 
 

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duplex ss pipe

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