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321 / 321H Stainless Steel Pipe

Short Description:

Item: Stainless Steel Tube / SS Pipe
Material Grade:
321/321H
Standards: AISI ASTM JIS SUS and GB
Wall Thickness: Schedule 5S–Schedule XXS (heavier on request)
Certifications: ISO 9001,SGS,BV
Surface: Annealed,Pickling,Polished
Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes


Product Description

Specification

Manufacturing Technique

Product Display & Application

Product Tags

Hunan Great supply a wide range of SS 321 / SS 321H Pipes and Tubes to our clients, which are sturdy in construction and ensure long service life. Stainless Steel 321 Pipes (UNS S32100) is the basic austenitic 18/8 steel (Stainless Steel 304) stabilised by Titanium (321) or Niobium (347) additions. Stainless Steel 321 Tubes is a stabilized stainless steel which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500 Degree F (427 to 816 Degree C).

SS 321H Pipes (UNS S32109) is a modification of SS 321 Tubes with a higher carbon content, to provide improved high temperature strength. SS 321H Tubes is the higher carbon (0.04 - 0.10) version of the alloy. We also offer these Pipes & Tubes in customized form with respect to its sizes and shapes.

Tube Range: 6.35 mm OD To 101.6 mm OD Guage: 25 SWG - 10 SWG
Outer Diameter: 3.00 mm - 219.10 mm
Wall Thickness: 0.40 mm - 12.70 mm
Schedules: 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
Length: Upto 30 meters, Custom Cut Lengths


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  • Grade Specifications

    STANDARD

    WERKSTOFF NR.

    UNS

    JIS

    EN

    SS 321

    1.4541

    S32100

    SUS 321

    X6CrNiTi18-10

    SS 321H

    1.4878

    S32109

    SUS 321H

    X12CrNiTi18-9

    Chemical Composition

    Element

    SS 321

    SS 321H

    C

    0.08 max

    0.04 – 0.10

    Mn

    2.0 max

    2.0 max

    Si

    1.0 max

    1.0 max

    P

    0.045 max

    0.045 max

    S

    0.030 max

    0.030 max

    Cr

    17.00 – 19.00

    17.00 – 19.00

    N

    0.10 max

    0.10 max

    Ni

    9.00 – 12.00

    9.00 – 12.00

    Ti

    5(C+N) – 0.70 max

    4(C+N) – 0.70 max

    Mechanical Properties

    Element

    SS 321/321H

    Density

    8.0 g/cm3

    Melting Point

    1457 °C (2650 °F)

    Tensile Strength

    Psi – 75000 , MPa – 515

    Yield Strength (0.2%Offset)

    Psi – 30000 , MPa – 205

    Elongation

    35 %

    The process of Seamless steel pipe:
    Hot Rolled Process for Seamless Steel Pipe

    photo29

    Cold Drawn Process for Seamless Steel Pipe

    photo30

    The process of welded steel pipe:

    photo31

    Stainless Steel Alloys 321 and 321H pipe, flanges and fittings are common to the petroleum refining industries.

    ss-321-pipes-display

    Alloy 321 and 321H is often used to make radiant superheaters, boiler tubes, high pressure steam pipes, and general refinery piping. They are also used for heavy-duty exhaust systems and manifolds.

      Food Processing Industry
      Fabrication Industry
      Oil and Gas Industry
      Chemical Industry
      Plumbing
      General Purpose Applications
      Heating
      Water Supply Systems
      Power Plant
      Paper & Pulp Industry

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