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  • Astm A335 Seamless Ferritic Alloy Steel Pipe For High Temperature Service - China

    price: contact company for price

    ASTM A335 Seamless Ferritic Alloy- Steel Pipe for High-

    Temperature Service

    ASTM A335 Chrome Moly Pipe

    Temperature service. Pipe ordered to this specification

    shall be suitable for bending, flanging, and similar forming

    operations, and for fusion welding. Sometimes referred to

    as P Grade, chrome moly pipe is popular in P- Grades P5, P9,

    P11, P22, and P91. The most common use of grades P11, P22,

    and P91 is in the power industry and petro- chemical plants,

    Grades P5 and P9 are commonly used in refineries.

    A335 is often called chrome moly pipe because of the

    chemical makeup of Molybdenum ( Mo) and Chromium ( Cr) .

    Molybdenum increases the strength of steel as well as the

    elastic limit, resistance to wear, impact qualities, and

    hardenability. Moly increases the resistance to softening,

    restrains grain growth and makes chromium steel less

    susceptible to embrittlement. Moly is the most effective

    single additive that increases high temperature creep

    strength. It also enhances the corrosion resistance of

    steel, and inhibits pitting. Chromium ( or chrome) is the

    essential constituent of stainless steel. Any steel with

    12% or more Chrome is considered stainless. Chrome is

    virtually irreplaceable in resisting oxidation at elevated

    temperatures. Chrome raises the tensile, yield, and hardness

    at room temperatures. The composition chrome moly alloy

    steel pipe make it ideal for use in power plants,

    refineries, petro chemical plants, and oil field services

    where fluids and gases are transported at extremely high

    temperatures and pressures.

    Grades: P- 5, P- 9, P- 11, P- 22, and P- 91


    NPS 1/ 4' ' to NPS 48' '

    Wall Thickness - Schedules 10 through 160, STD, XS, XXS.

    Unscheduled heavy wall pipe thicknesses available up to 4












    0.30- 0.60


    0.50 max

    4.00- 6.00

    0.45- 0.65


    0.15 max

    0.25- 1.00

    8.00- 10.00

    0.90- 1.10


    0.05- 0.15

    0.50- 1.00

    1.00- 1.50

    0.44- 0.65


    1.90- 2.60

    0.87- 1.13


    0.08- 0.12



    0.20- 0.50

    8.00- 9.50

    0.85- 1.05

    V 0.18- 0.25

    N 0.03- 0.07

    Ni 0.40 max

    Al 0.02 max

    Cb 0.06- 0.10

    Ti 0.01 max

    Zr 0.01 max

    Mechanical Properties

    Grade P11,

    P22, P5, P9Grade P91

    Tensile strength, min, psi, ( MPa) 60, 000 ( 415)

    85, 000 ( 585)

    Yield strength, min, ( MPa) 30.000 ( 205)

    60, 000 ( 415)

    ( Note: This is summarized information from ASME

    Specification A335. Please refer to the specific Standard or

    Specification or contact us for more details. )

    Permissible Variations in Diameter

    For pipe ordered to NPS or outside diameter, variations

    outside diameter shall not exceed those specified following:

    NPS Designator OverUnder

    In. mm In.


    1⁄ 8to 11⁄ 2, incl. 1⁄ 64 ( 0.015) 0.40 1⁄ 64

    ( 0.015) 0.40

    Over 11⁄ 2 to 4, incl. 1⁄ 32 ( 0.031) 0.79 1⁄ 32

    ( 0.031) 0.79

    Over 4 to 8, incl. 1⁄ 16 ( 0.062) 1.59 1⁄ 32

    Over 8 to 12, incl. 3⁄ 32 ( 0.093) 2.38 1⁄ 32

    Over 12 6 1 % of the pacified outside diameter

    For pipe ordered to inside diameter, the inside diameter

    shall be not vary more than 1 % from the specified inside


    Packing: Bare packing/ bundle packing/ crate packing/ wooden

    protection at the both sides of tubes and suitably protected

    for sea- worthly delivery or as requested.

    Inspection and Test: Chemical Composition Inspection,

    Mechanical Properties Test( Tensile Strength, Yield Strength,

    Elongation, Flaring, Flattening, Bending, Hardness, Impact

    Test) , Surface and Dimension Test, No- destructive Test,

    Hydrostatic Test.

    Surface treatment: Oil- dip, Varnish, Passivation,

    Phosphating, Shot Blasting.

    Both ends of each crate will indicate the order no. , heat

    no. , dimensions, weight and bundles or as requested.

    Company Contact:

    • Phone: 8605748200788

    • Address: B-2320, ShiJi Plaza,Daliang Street No.118,Haishu D, Ningbo, China

    • Email: Email

    Published date: September 14, 2015 -

    • Business Description: Junfun is an available Chinese supplier located in Ningbo city. We focus

      on steelfiled, under the brand name of "Junfun", including seamless

      steel pipe,welded steel pipe, ball valve, butterfly valve, flange,

      elbow, tee,etc., which are used in industries like petrol,

      chemical,pharmaceuticals, environmental protection, food&water,

      conservancy,shipbuilding, automobile, aerospace, pressure vessels,

      mechanical processing, etc. Professional and experienced workers, strict

      supply chain management ensures the fulfillment of clients'


      From the raw material to finished products, we insist on recording each

      step of production situation and test, which can track the quality

      problem. Welcome inquiry, welcome cooperation.

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