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ASTM A790 Standard for Duplex Stainless Steel Pipe UNS S31803 S32205

Categories Duplex Stainless Steel Pipe
Brand Name: TOBO/TPCO/TISCO/VALIN/METAL
Model Number: ASTM A790 UNS S31803 S32205
Certification: ISO/PED/TUV/SGS/LR/BV
Place of Origin: China/Japan/Germany
MOQ: 0.5-1 tons
Price: negotiable
Payment Terms: T/T, L/C, Western Union, MoneyGram
Supply Ability: 6000TONS/MONTH
Delivery Time: According to the qty
Packaging Details: in plastic bags then in bundles
Standard:: ASTM A790
Color: white Silver gold
Types:: Duplex Stainless Steel Pipe
Material Grade: UNS S31803 S32205
Outer Diameter: 6mm-710mm
Company Info.
TOBO STEEL GROUP CHINA
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    ASTM A790 Standard for Duplex Stainless Steel Pipe UNS S31803 S32205

    ASTM A790 Standard for Duplex Stainless Steel Pipe UNS S31803 S32205


    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)


    ASTM A790 covers seamless and straight-seam welded ferritic/austenitic duplex stainless steel pipe for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. The pipe shall be made by the seamless or an automatic welding process, with no addition of filler metal in the welding operation. Heat analysis shall be made to determine the percentages of the elements specified. Tension tests, hardening tests, flattening tests, hydrostatic test and nondestructive electric tests shall be made to conform to the specified requirements.

    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






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