Grade P91 is one of the grades of Alloy Steel Pipes. It is an austenitic alloy that has tensile and creep’s strength. Including bending, flanging, fusion welding, and similar forming operations, Alloy Steel P91 Pipes are suitable for applications. Most commonly, it is applicable in the power industry and petrochemical plants. These Pipes are ideal for extremely high temperatures and pressures.
We, Saffron Steel & Engineering., are manufacturing high-grade Alloy Steel P91 Pipe. We are producing and supplying Alloy Steel P91 Pipe to various industries to complete many operations smoothly. Our Alloy steel P91 Pipes contains carbon steel with several alloying elements like nickel, titanium, manganese, silicon, copper, chromium, and aluminium. We are offering these highest quality Alloy steel P91 Pipes to industries such as power generation, petrochemicals, gas processing, petrochemical plants, heaters, and oilfield services.
Saffron Steel & Engineering. carries a wide range of Alloy Steel P91 Pipes in a variety of lengths, ODs, IDs, size and wall thicknesses to meet your project’s needs—including pipe in dimension as per ASTM and weight-kg. per mtr. (ASME/ANSI B36.10/19) / weight & thickness of Grade P91 Alloy Steel seamless pipes gauge .
We satisfy the needs of our esteem clients by offering custom made Pipes by following all industrial and international standards. We are offering Alloy steel P91 Pipes in customized sizes and thicknesses. We are focusing on maintaining quality standards higher. Along with this, we are offering benefits like on-time delivery, affordable rates, doorstep service, suitable packing, and fastest shipping. Our team of experts and skilled professionals are testing and supervising the whole process to avoid defects. To ensure the durability, strength, robustness, and construction of Alloy Steel P91 Pipes, we perform the various tests at different stages of production.
Alloy Steel P91 Pipes Specifications
Pipe Specification : ASTM A335 / ASME SA335
Dimensions : ASTM, ASME and API
Size : 1/8"NB TO 30"NB IN
Outside Diameter : 6-2500mm; WT:1-200mm
Wall Thickness : 0.3mm – 50 mm
Length : 5.8/6/11.8/12m / Single Random, Double Random & Required Length
Schedules : SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Form : Round, Square, Rectangular, Hydraulic Etc
End : Plain End, Beveled End, Treaded
End Protection : Plastic Caps
ASTM A335 / ASME SA335 Alloy Steel P91 Pipe Equivalent Grades
| UNS |
DIN |
ASTM |
EN |
| K91560 |
1.4903 |
A335 Grade P91 |
X10CrMoVNb9-1 |
After strict quality testing, our high-grade Alloy Steel P91 Pipes are sent for labelling and packing. We use quality material for packing to protect Pipes from damage. For safe and damage-free delivery, we choose a convenient shipping option. We adopt changes and upgradations of technology to meet customer’s expectations. Our high-tech manufacturing plant and warehouse help us to produce quality Alloy Steel P91 Pipes in bulk amount and to store them safely. We are ready to accept urgent orders and to fulfil the requirements of our clients. With all the necessary qualities and benefits, we serve Alloy Steel P91 Pipes in a significant amount.
Alloy Steel P91 Seamless Pipe Types
P91 Alloy Steel Seamless Pipe
Alloy Steel K91560 Seamless Pipe
Alloy Steel 1.4903 Seamless Pipe
P91 Seamless Steel Pipe
CrMo P91 Pipes
ASTM A335 Gr P91 Chromium Molybdenum Steel Pipes
Chrome Moly K91560 / 1.4903 Pipe
Alloy Steel P91 High Pressure Pipes
P91 Alloy Steel High pressure Boiler pipes
Alloy Steel P91 Boiler Pipes
ASTM A335 GR P91 High Temperature Steel Pipe
A335 P91 Alloy Steel High Temperature Seamless Pipes
P91 Alloy Steel High Temperature Steel Pipes
Alloy Steel P91 Pipes Dimensions:
All Pipes is manufactured and tested / inspected to the relevant standards including ASTM, ASME and API etc.
| Pipe/Tube |
NB Sizes |
Sch 5 |
Sch 10 |
Sch 40 |
Sch 80 |
Sch 160 |
| Alloy Steel P91 Pipes |
1/8″ |
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| Alloy Steel P91 Pipes |
1/4″ |
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| Alloy Steel P91 Pipes |
3/8″ |
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| Alloy Steel P91 Pipes |
1/2″ |
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| Alloy Steel P91 Pipes |
3/4″ |
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| Alloy Steel P91 Pipes |
1″ |
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| Alloy Steel P91 Pipes |
1 1/4″ |
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| Alloy Steel P91 Pipes |
1 1/2″ |
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| Alloy Steel P91 Pipes |
2″ |
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| Alloy Steel P91 Pipes |
2 1/2″ |
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| Alloy Steel P91 Pipes |
3″ |
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| Alloy Steel P91 Pipes |
4″ |
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| Alloy Steel P91 Pipes |
5″ |
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| Alloy Steel P91 Pipes |
6″ |
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ASTM A335 Alloy Steel P91 Pipe Chemical Composition
| Grade |
C, % |
Mn, % |
P, % |
S, % |
Si, % |
Cr, % |
Mo, % |
| P91 |
0.08~0.12 |
0.30~0.60 |
0.02 |
0.01 |
0.20~0.50 |
8.00~9.50 |
0.85~1.05 |
ASME SA335 Alloy Steel P91 Pipe Mechanical Properties
| Grade |
Tensile Strength, MPa |
Yield Strength, MPa |
Elongation, % |
| P91 |
585 min |
415 min |
20 min |
ASTM A335 Grade P91 Alloy Steel Pipe Tolerances
Alloy Steel P91 Pipe Diameter
| A335 Pipe |
Over |
Under |
| NPS [DN] | in. |
mm |
in. |
mm |
| 1/8 to 1 1/2 / DN 6 to 40 |
1/64 (0.015) |
0.4 |
1/64 (0.015) |
0.4 |
| Over 1 1/2 to 4 / DN 40 to 100 |
1/32 (0.031) |
0.79 |
1/32 (0.031) |
0.79 |
| Over 4 to 8 / DN 100 to 200 |
1/16 (0.062) |
1.59 |
1/32 (0.031) |
0.79 |
| Over 8 to 12 / DN 200 to 300 |
3/32 (0.093) |
2.38 |
1/32 (0.031) |
0.79 |
| Over 12 / > DN 300 |
+/- 1% of the specified outside diameter |
Alloy Steel P91 Pipe Wall Thickness
The tolerances in WT, in %, from specified are:
- 1/8 to 2 1/2 [6 to 65] incl., all t/D ratios: over 20%, under 12.5%
- Above 2 1/2 [65], t/D < or = 5%: over 22.5%, under 12.5%
- Above 2 1/2 [65], t/D > 5%: over 15%, under 12.5%
t = Specified Wall Thickness; D = Specified Outside Diameter)
Alloy Steel P91 Pipe Application Industries
- Textile machinery
- Oil and gas industry
- Pulp and paper industry
- Power plants
- Energy industries
- Furniture
- Pharmaceutical processing industry
- Modern architecture
- Home appliances
- Water waste projects
- Synthetic fiber
- Heat exchanger
- Fluid piping
- Dairy and food processing
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