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Hot Rolled ASME SA335 P91 22" Boiler Seamless Steel Tube

Categories Seamless Alloy Steel Pipe
Brand Name: NEW FORCE
Model Number: ASTM A335 P91
Certification: MTC
Place of Origin: China
MOQ: 10 tons or negotiable
Price: negotiable
Payment Terms: L/C, T/T
Supply Ability: 200000 tons per month
Delivery Time: 2~10 weeks
Packaging Details: bare and loose
Pressure: High Pressure
Structure: Seamless
Material: Alloy Steel P91
Length: Random or Fixed
Standard: ASTM A335
Application: High Pressure Boiler
Manufacture: Hot Rolled
Size: 559*22.23mm
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Hot Rolled ASME SA335 P91 22" Boiler Seamless Steel Tube

22 INCH OD ASME SA335 P91 Seamless Alloy Steel High Pressure Pipe


The ASTM SA335 P91 pipe is one kind of seamless pipe designed for high temperature applications. It is a ferritic alloy steel that has very high strength properties, which do not deteriorate with time, and are creep resistant. It is also called 9 Cr 1 Mo steel, or chrome moly pipe, based on its composition.


‍Applications of ASTM A335 P91 Pipes:

  • Power generation
  • Oil services
  • Petrochemical plants
  • Heaters/reheat lines
  • Boilers
  • Gas processing equipment

Chemical Composition of ASME SA335 P91 Pipes:

C, %Mn, %P, %S, %Si, %Cr, %Mo, %V, %N, %Ni, %Al, %Nb, %
0.08-0.120.3-0.60.02 max0.01 max0.2-0.58.0-9.50.85-1.050.18-0.250.03-0.070.4 max0.04 max0.06-0.10

Specification of SA335 P91 Pipes

Specialized inLarge Diameter Size
Lengthmax 16000mm
ScheduleSchedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.
FormRound, Square, Rectangular, Hydraulic Etc.
StandardASTM A335 P91, SA335 P91 (with IBR Test Certificate)
Size1/2 NB to 36 NB
Thickness3-12mm
ScheduleSCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
ToleranceCold drawn pipe: +/-0.1mm
Cold rolled pipe: +/-0.05mm
CraftCold rolled and Cold drawn
TypeSeamless
LengthSingle Random, Double Random & Cut Length.
EndPlain End, Beveled End, Treaded
Specialized inLarge Diameter SA335 P91 Material
Additional TestingNACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.
ApplicationHigh-Temperature Service

Mechnical Properties of ASTM A335 P91 Pipes

Tensile Strength , MPaYield Strength, MPaElongation, %Hardness, HB
585 min415 min20 min250 max

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