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ASTM A335 Alloy Steel Gr.P91 Seamless Pipes

Nitron Alloys Overseas is a popular manufacturer and supplier that offering a complete range of ASTM / ASME SA 335 GR. P91 Alloy Steel Seamless Pipe that is used widely in many industrial applications as well as commercial usage. We are globally dealing with our estimated clients as a manufacturer, supplier, and exporter of premium quality of steel seamless pipes that are expected by our buyers for any critical applications as well. We are offering ASTM / ASME SA 335 GR. P91 Alloy Steel Seamless Pipe in a number of different lengths, form, types, ends, schedules, sizes, dimensions, and specifications so that each and every application need can be easily satisfied. Our main aim is to gather all the needs of our buyers and offer customized and non-customized seamless pipe to our customers.

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ASTM / ASME SA 335 GR. P91 Alloy Steel Seamless Pipes are manufactured at our well-equipped manufacturing unit, with the fullest perfection to bring out the quality of seamless pipes. To make the excellent quality of these seamless pipes, we are making use of available latest technology and modern tools compliance with high quality of alloy that is of pure standard. The alloy that we are selecting from is collected from reliable market mills. We are developing these seamless pipes as per the set manufacturing norms and according to well stated quality standards.

Moreover, At Nitron Alloys Overseas, our whole production process is executed under the very strict supervision of our professional experts that possess all excellent knowledge of manufacturing these seamless pipes. Our developed ASTM / ASME SA 335 GR. P91 Alloy Steel Seamless Pipe possess several good features found in the product quality due to which it has received greater popularity among the numbers of industrialists. Some of the features are high tensile strength, toughness, good mechanical properties, rugged construction, anti-corrosive body, flexible to use, good dimensional accuracy, fine surface finishes, and many more. We, Nitron Alloys Overseas, are conducting product testing by performing destructive and non-destructive tests so that the high quality of product delivery can be assured. we deliver it to our customers using fast transportation medium


ASTM A335 Alloy Steel Gr. P91 seamless pipes can be used at elevated temperatures up to approximately 600°C (1110°F). Grade P91 exhibits excellent creep strength and resistance to thermal fatigue at such temperatures, making it suitable for high-temperature applications like steam pipelines, superheaters, & reheaters in power plants.

ASTM A335 Alloy Steel Gr. P91 seamless pipes are commonly employed in power generation plants, including boiler tubes and steam lines, as well as in petrochemical and refineries for high-temperature applications.

ASTM A335 Alloy Steel P91 seamless pipes have specific chemical composition requirements. The composition typically includes a minimum of 8.00% to 9.50% chromium, 0.85% to 1.05% molybdenum, 0.30% to 0.60% carbon, & small amounts of other elements such as vanadium, nitrogen, and aluminum.

Specification of ASTM A335 Chrome Moly Gr.P91 Seamless Pipes

Spec bag
Seamless Pipe
Specifications: ASTM A335 / ASME SA335
Dimension Standard : ANSI B36.19M, ANSI B36.10
Seamless Pipe Size : 1 / 8" NB - 24" NB
Type : Seamless Pipes
Form : Round Pipes, Square Pipes, Rectangular Pipe
Length : Single Random, Double Random & Cut Length
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH120, SCH140, SCH160, XXSEnd : Plain End, Beveled End, Treaded

Types of ASTM A335 Alloy Steel Gr.P91 Seamless Pipes

Alloy Steel Gr.P91 Seamless Pipes

Alloy Steel P91 Seamless Pipes

  • - ASTM A335 Chromium Molybdenum Steel Gr.P91 Seamless Pipes
  • - K91560 Seamless Pipes
  • - 1.4903 Seamless Pipes
  • - P91 Cr-Mo Seamless Pipe
  • - ASME SA335 Alloy Steel P91 Seamless Pipes
  • - Alloy Steel Gr.P91 Seamless Pipes Supplier
  • - Cr-Mo P91 Seamless Pipes Manufacturer
Alloy Steel Gr.P91 Round Pipes

Alloy Steel P91 Pipes

  • - ASTM A335 Cr-Mo Gr.P91 Round Pipes
  • - K91560 Round Pipes
  • - 1.4903 Round Pipes
  • - P91 Alloy Steel Round Pipe
  • - ASME SA335 Chromium Molybdenum Steel P91 Round Pipes
  • - Alloy Steel Gr.P91 Round Pipes Supplier
  • - Chromium Molybdenum Steel P91 Round Pipes

Equivalent Grades for ASTM A335 Alloy Steel Gr.P91 Seamless Pipes

STANDARD WERKSTOFF NR. UNS TRADE NAME
Alloy Steel P91 1.4903 K91560 X10CrMoVNb9-1

ASTM A335 Alloy Steel Gr.P91 Seamless Pipes Chemical Composition

Element C Cr Mn Mo P S Si
Grade P91 0.08-0.12 8.0-9.5 0.3-0.6 0.85-1.05 0.02 max 0.01 max 0.2-0.5

Mechanical Properties of ASTM A335 Alloy Steel Gr.P91 Seamless Pipes

Element Tensile Strength, MPa Yield Strength, MPa Elongation, %
P91 585 min 415 min 20 min

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Application Industries

  • Refineries
  • Petrochemicals Industry
  • Oil & Gas Industry
  • Mining
  • Construction
  • Pharmaceuticals
  • Automobile