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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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