ASTM A335 P91 Pipe supplier

SA335 Pipe Materials in India, ASME A335 P91 Pipe stockist

Exporter A335 gr P91 Welded Pipe, Buy P91 Alloy Steel Seamless Pipe & ASME SA 335 Alloy Steel P91 Chrome Moly Pipes

SA213 T91 Tube

SA213 T91 Tube

ASTM A335 P91 Welded Pipe

ASTM A335 P91 Welded Pipe

ASTM A335 P91 Seamless Pipe

ASTM A335 P91 Seamless Pipe

The manufacturing procedure of ASME SA335 grade P91 pipe starts with its forming by either cold drawing or hot finished followed by heat treatment. The heat treatment begins with the process of normalizing the pipe at 1050 °C followed by cooling down by air at 200 °C and then tempering at about 760 °C. The manufacturing process makes the astm a335 P91 alloy steel pipe well suited to forming, bending, flanging, and fusion welding.

The astm a335 P91 pipe is a seamless Pipe meant for high temperature applications. These pipes are made from ferritic Alloy-Steel. Chemically the a335 P91 welded pipe contains elements like Molybdenum (Mo) and Chromium added to the alloy. When Molybdenum and chromium are added to the alloy, there is an increase in the tensile strength of the sa335 grade P91 pipe. The tensile strength of the a335 grade P91 pipe is 415 Mpa, while its yield strength is 205 Mpa. The elongation percentage of the pipe ranges between 20% to 30%.

Further Molybdenum improves the pipe’s resistance to wear, its impact qualities, hardenability, as well as its elastic limit.  Molybdenum is one of the most effective alloyants that can increase the creep strength at high temperatures, prevents grain growth, reduces brittleness and has excellent resistance to softening.

While chromium is an important alloyant in the a335 P91 pipes, it is known to prevent corrosion and has high resistance to oxidation at elevated temperature. Corrosion is also prevented in these pipes as they are surface treated or coated. The coating on the surface can be done through various techniques like passivation, phosphating, oil-dip, varnish and shot blasting.

Hence industrial plants, factories and refineries used the astm a335 P91 pipe for transportation of fluids and gases like water, oil and steam at extremely high pressures and temperatures. For example, they are used in power plants, oil refineries and petrochemical plants.

The sa335 P91 grade of pipes is most suitable for applications in the steam boiler. They can be used in boiler drums and parts, pressure vessels in apparatus engineering etc. Further, since the sa335 P91 material pipe can withstand high temperatures, they find application in permanent operations, where the wall temperatures escalate to about 1202 °F or 650 °C.

Table of content


ASTM A335 P91 Specification

Specialized in Large Diameter Size
Outer Dimensions 19.05mm – 114.3mm
Wall Thickness 2.0mm – 14 mm
Length max 16000mm
Schedule Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.
Form Round, Square, Rectangular, Hydraulic Etc.
Standard ASTM A335 P91, SA335 P91 (with IBR Test Certificate)
Size 1/2 NB to 36 NB
Thickness 3-12mm
Schedule SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Origin European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)
Tolerance Cold drawn pipe: +/-0.1mm
Cold rolled pipe: +/-0.05mm
Craft Cold rolled and Cold drawn
Type Seamless / ERW / Welded / Fabricated
Length Single Random, Double Random & Cut Length.
End Plain End, Beveled End, Treaded
Specialized in Large Diameter SA335 P91 Material
Additional Testing NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.
Application Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

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ASTM A335 P91 Chemical Composition

C, % Mn, % P, % S, % Si, % Cr, % Mo, % V, % N, % Ni, % Al, % Nb, %
0.08-0.12 0.3-0.6 0.02 max 0.01 max 0.2-0.5 8.0-9.5 0.85-1.05 0.18-0.25 0.03-0.07 0.4 max 0.04 max 0.06-0.10
A335 P91 Material Composition and Astm A335 Gr P91 Composition is given in above table

ASTM A335 P91 Properties

Tensile Strength , MPa Yield Strength, MPa Elongation, % Hardness, HB
585 min 415 min 20 min 250 max

ASTM A335 P91 Alloy Steel Seamless Pipes Heat Treatment Requirements

P5, P9, P11, and P22
Grade Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing
or Tempering
Temperature Range F

[C]
ASTM A335 P5 (b,c) Pipe Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
Subcritical Anneal (P5c only) ***** 1325 - 1375 [715 - 745]
ASTM A335 P9 Pipe Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
ASTM A335 P11 Pipe Full or Isothermal Anneal
Normalize and Temper ***** 1200 [650]
ASTM A335 P22 Pipe Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
ASTM A335 P91 Pipe Normalize and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]
Quench and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]

A335 P91 Pipe Tensile Requirements

Seamless
P-5 P-9 P-11 P-22 P-91
Tensile Strength, min., psi
ksi 60 60 60 60 85
MPa 415 415 415 415 585
Yield Strength, min., psi
ksi 30 30 30 30 60
MPa 205 205 205 205 415

Seamless Pipe/ Steel Seamless Pipe Wall Thickness

NPS [DN] Designator Tolerance, % from Specified
Over Under
1/8 to 2 1/2 [6 to 65] incl., all t/D ratios 20.0% 12.5%
Above 2 1/2  [65], t/D < or = 5% 22.5% 12.5%
Above 2 1/2  [65], t/D > 5% 15.0% 12.5%
(t = Specified Wall Thickness; D = Specified Outside   Diameter)

ASTM A335 P91 Pipe Price List in India

check the UNS K11522 P91 Pipe at best Price

Size MSL Make ISMT make JSL Make
1/2" 4,264.71 4,257.35 4,272.06
3/4" 4,044.12 4,036.76 4,051.47
1" 3,897.06 3,889.71 3,904.41
1.25" 3,852.94 3,845.59 3,860.29
1.5" 3,750.00 3,742.65 3,757.35

Please note: All Above Prices are USD $/Ton. All price applicable for SCH 40, SCH 60, SCH 80 & SCH XS P91 Pipe.

ASTM A335 Gr P91 Equivalent Material

SA335 P91 Pipe equivalent

ASTM ASME Equivalent material JIS G 3458 UNS BS DIN ISO ABS NK LRS
A335 P91 SA335 P91 T91, K90901, X10CrMoVNb9-1, 1.4903 K91560

Equivalent Standards: EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, NBR 5603

ASTM International BSi - British Standards institute Material
ASTM A335 Gr. P5 Pipe 3604/625 5% Cr 1/2% Mo
ASTM A335 Gr. P9 Pipe 3604/629 9% Cr 1% Mo
ASTM A335 Gr. P11 Pipe 3604/621 1 1/4% Cr 1/2% Mo
ASTM A335 Gr. P12 Pipe 3604/620 1% Cr 1/2% Mo
ASTM A335 Gr. P22 Pipe 3604/622 2 1/4% Cr 1% No

MATERIAL SPECIFICATION
ASTM ASME
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS ASTM A335 Grade P5 Pipe 5% Chrome; ½% Moly SA335 Grade P5 5% Chrome; ½% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS ASTM A335 Grade P9 Pipe 9% Chrome; 1% Moly SA335 Grade P9 9% Chrome; 1% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS ASTM A335 Grade P11 Pipe 1-1/4% Chrome; ½% Moly SA335 Grade P11 1-1/4% Chrome; ½% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS ASTM A335 Grade P22 Pipe 2-1/4% Chrome; 1% Moly SA335 Grade P22 2-1/4% Chrome; 1% Moly
CHROME- MOLY ALLOY STEEL PIPE NOMINAL WALL SEAMLESS ASTM A335 Grade P91 Pipe 9% Chrome; 1% Moly + trace elements SA335 P91 A335 9% Chrome; 1% Moly + trace elements

ASTM A335 P91 Pipe Types Out diameter Wall thickness Length
ASTM A335 P91 Seamless Pipe (Custom Sizes) 1/2" NB - 60" NB SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 Custom
ASTM A335 P91 Welded Pipe (in Stock + Custom Sizes) 1/2" NB - 24" NB As per requirement Custom
ASTM A335 P91 ERW Pipe (Custom Sizes) 1/2" NB - 24" NB As per requirement Custom
ASTM A335 High Pressure P91 Boiler Pipe 16" NB - 100" NB As per requirement Custom

Alloy Steel SA335 P91 Pipe suppliers

ASTM A335 P91 Seamless Pipe
ASTM A335 P91 Seamless Pipe
ASTM A335 P91 Welded Pipe
ASTM A335 P91 Welded Pipe
ASTM A335 P91 Square hollow section
ASTM A335 P91 Square hollow section
High Pressure P91 Boiler Pipe
High Pressure P91 Boiler Pipe
SA335 P91 ERW Pipe
SA335 P91 ERW Pipe
ASTM A335 P91 Alloy Steel Pipe
ASTM A335 P91 Alloy Steel Pipe
SA335 P91 Rectangular Tube
SA335 P91 Rectangular Tube
ASTM A335 grade P91 Pipes
ASTM A335 grade P91 Pipes
SA335 P91 Square Pipe
SA335 P91 Square Pipe
ASTM A335 P91 Pipe Suppliers
ASTM A335 P91 Pipe Suppliers
SA335 P91 Schedule 40 Pipe
SA335 P91 Schedule 40 Pipe
ASTM A335 P91 Schedule 60 Pipe
ASTM A335 P91 Schedule 60 Pipe

Types of P91 UNS K11522 Pipes

Alloy Steel P91 Pipes ASTM A335 P91 Alloy Steel A335 Pipe
ASTM A335 grade P91 Pipes ASTM A335 P91 Alloy Steel Seamless Pipes
High Pressure P91 Boiler Pipe ASME SA335 P91 Alloy Steel Rectangular Pipe
grade P91 Alloy Steel Hydraulic Pipe Alloy Steel Gr P91 LSAW Pipes
ASME SA 335 Alloy Steel P91 Seamless Pipe IBR Alloy Steel P91 Pipes
P91 Alloy Pipe ASME SA / ASTM A335 P91 Pipes
High Quality Grade P91 Alloy Steel Pipes ASTM A335 P91 Pipes Dealer
Alloy A335 P91 Seamless Square Pipe Grade P91 Hydraulic Pipes
AISI P91 ERW pipes ASTM A335 P91 Pipes
ASTM A335 P91 Material Composition Sa335 P91 Material
Sa335 P91 Pipe ASME SA GR P91 Pipe
ASTM A335 P91 Pipe ASTM A335 Gr P91 pipe
ASTM A335 P91 Welded Pipe ASTM A335 P91 Material
Sa335 Grade P91 ASTM A335 P91 Pipe

ASTM A335 P91 Pipe Weight

ASTM A335 P91 Pipe Dimensions and weights section modulus and gallons capacity per linear foot

Size NPS Pipe O.D. Wall Thickness Pipe I.D. Weight per Foot Standard to XXHY Schedule
Pipe #
Section Modulus Gallon Capacity Per Linear Foot
1/2 0.84 0.109 0.622 0.85 STD 40 .0407 .0158
0.147 0.546 1.09 XHY 80 .0478 .0122
0.188 0.464 1.31 160 .0528 .0088
0.294 0.252 1.72 XXHY .0577 .0026
3/4 1.05 0.113 0.824 1.13 STD 40 .0705 .0277
0.154 0.742 1.48 XHY 80 .0853 .0225
0.219 0.612 1.95 160 .1006 .0153
0.308 0.434 2.44 XXHY .1103 .0077
1 1.315 0.133 1.049 1.68 STD 40 .1328 .0449
0.179 0.957 2.17 XHY 80 .1606 .0374
0.250 0.815 2.85 160 .1904 .0271
0.358 0.599 3.66 XXHY .2136 .0146
1 1/4 1.66 0.140 1.380 2.27 STD 40 .2346 .0777
0.191 1.278 3.00 XHY 80 .2913 .0666
0.250 1.160 3.77 160 .3421 .0549
0.382 0.896 5.22 .4110 .0328
1 1/2 1.90 0.145 1.610 2.72 STD 40 .3262 .1058
0.200 1.500 3.63 XHY 80 .4118 .0918
0.281 1.338 4.86 160 .5079 .0730
0.400 1.100 6.41 .5977 .0494
2 2.375 0.109 2.157 2.64 10 .4205 .1898
0.154 2.067 3.66 STD 40 .5606 .1743
0.218 1.939 5.03 XHY 80 .7309 .1534
0.250 1.875 5.68 .8045 .1434
0.281 1.813 6.29 .8666 .1344
0.344 1.687 7.47 160 .9806 .1161
0.436 1.503 9.04 XXHY 1.1043 .0922
2 1/2 2.875 0.120 2.635 3.53 10 .6870 .2833
0.203 2.469 5.80 STD. 40 1.0640 .2487
0.216 2.443 6.14 1.1169 .2435
0.250 2.375 7.02 1.2468 .2301
0.276 2.323 7.67 XHY 80 1.3386 .2202
0.375 2.125 10.02 160 1.6371 .1842
0.552 1.771 13.71 XXXHY 1.9971 .1280
3 3.50 0.120 3.260 4.34 1.0411 .4336
0.156 3.188 5.58 1.3122 .4147
0.172 3.156 6.12 1.4265 .4064
0.188 3.124 6.66 1.5342 .3984
0.216 3.068 7.58 STD. 40 1.7241 .3840
0.250 3.000 8.69 1.9372 .3672
0.281 2.938 9.67 2.1207 .3521
0.300 2.900 10.26 XHY 80 2.2253 .3431
0.438 2.624 14.34 160 2.8774 .2811
0.600 2.300 18.6 XXHY 3.4243 .2158
3 1/2 4.0 0.120 3.760 4.98 10 1.3776 .5768
0.226 3.548 9.12 STD. 140 2.3939 .5136
0.250 3.500 10.02 2.6001 .4998
0.281 3.438 11.17 2.8562 .4821
0.318 3.364 12.52 XHY 80 3.1400 .4617
0.636 2..728 22.87 XXHY 4.8795 .3085
4 4.5 0.120 4.260 5.62 10 1.7612 .7404
0.156 4.188 7.24 2.2354 .7156
0.188 4.124 8.67 2.6296 .6942
0.203 4.094 9.32 2.8173 .6838
0.219 4.062 10.02 3.0184 .6725
0.237 4.026 10.80 STD. 40 3.2145 .6613
0.250 4.000 11.36 3.3611 .6528
0.281 3.938 12.67 60 3.7021 .6326
0.312 3.876 13.97 4.0273 .6126
0.337 3.826 15.00 XHY 80 4.2713 .5972
0.438 3.624 19.02 120 5.1790 .5361
0.531 3.438 22.53 160 5.8997 .4822
0.674 3.152 27.57 XXHY 6.7927 .4054
5 5.563 0.188 5.187 10.80 4.1161 1.0979
0.219 5.125 12.51 4.7279 1.0716
0.258 5.047 14.63 STD. 40 5.4500 1.0391
0.281 5.001 15.87 5.8644 1.0204
0.312 4.939 17.51 6.4074 .99647
0.344 4.875 19.19 6.9358 .9696
0.375 4.813 20.80 XHY 80 7.4300 .9449
0.500 4.563 27.06 120 9.2534 .8495
0.625 4.313 32.99 160 10.7976 .7590
0.750 4.063 38.59 XXHY 12.0954 .6734
6 6.625 0.109 6.407 7.59 5 3.5769 1.6748
0.134 6.357 9.30 10 4.3475 1.6488
0.156 6.313 10.79 5.0107 1.6260
0.188 6.249 12.94 5.9351 1.5937
0.203 6.219 13.94 6.3804 1.5780
0.219 6.187 15.00 6.8261 1.5620
0.250 6.125 17.04 7.6905 1.5306
0.280 6.065 18.99 STD. 40 8.4958 1.5008
0.312 6.001 21.06 9.3416 1.4688
0.344 5.937 23.10 10.111 1.4391
0.375 5.875 25.05 10.893 1.4082
0.432 5.761 28.60 XHY 80 12.224 1.3541
0.500 5.625 32.74 13.711 1.2909
0.562 5.501 36.43 120 14.9806 1.2346
0.625 5.375 40.09 16.1821 1.1787
0.719 5.187 45.39 160 17.8243 1.0977
0.864 4.897 53.21 XXHY 20.025 .9784
1.000 4.625 60.13 21.7719 .8727
1.125 4.375 66.14 23.1237 .7809

ASTM A335 P91 Alloy Steel Pipe Size Chart

ASTM A335 P91 Pipe Dimensions, NB Size Schedule

O.D. x Thickness(mm) O.D x Thickness(mm) O.D x Thickness(mm)
38.1 x 3.2 57.0 x 4.9 76.2 x 4.0
38.1 x 4.0 57.0 x 6.3 76.2 x 5.0
38.1 x 6.3 57.0 x 7.9 76.2 x 6.3
42.4 x 3.2 60.3 x 3.2 82.5 x 4.5
42.4 x 4.0 60.3 x 3.6 88.9 x 3.2
44.5 x 3.2 60.3 x 5.0 88.9 x 3.6
44.5 x 6.3 63.5 x 3.2 88.9 x 4.0
48.3 x 3.2 63.5 x 3.6 101.6 x 3.6
48.3 x 3.6 63.5 x 4.0 101.6 x 4.5
50.8 x 4.5 63.5 x 6.3 101.6 x 6.3
51.0 x 3.2 63.5 x 7.9 114.3 x 3.6
51.0 x 3.6 70.0 x 3.2 114.3 x 5.0
51.0 x 6.3 70.0 x 3.6 139.7 x 4.0
57.0 x 3.2 70.0 x 6.3 139.7 x 5.0
57.0 x 3.6 76.2 x 3.6 139.7 x 6.3

NB Size OD 40S 5S 10S S10 S20 S40 S60 XS/80S S80 S100 S120 S140 S160 XXS
mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm
1/8 10.29 1.2 1.73 2.41
1/4 13.72 1.7 2.24 3.02
3/8 17.15 1.7 2.31 3.2
15 1/2 21.34 2.8 1.7 2.1 2.77 3.73 3.73 4.78 7.47
20 3/4 26.67 2.9 1.7 2.1 2.87 3.91 3.91 5.56 7.82
25 1 33.4 3.4 1.7 2.8 3.38 4.55 4.55 6.35 9.09
32 1 1/4 42.16 3.6 1.7 2.8 3.56 4.85 4.85 6.35 9.7
40 1 1/2 48.26 3.7 1.7 2.8 3.68 5.08 5.08 7.14 10.2
50 2 60.33 3.9 1.7 2.8 3.91 5.54 5.54 9.74 11.1
65 2 1/2 73.03 5.2 2.1 3.1 5.16 7.01 7.01 9.53 14
80 3 88.9 5.5 2.1 3.1 5.49 7.62 7.62 11.1 15.2
90 3 1/2 101.6 5.7 2.1 3.1 5.74 8.08 8.08
100 4 114.3 6 2.1 3.1 6.02 8.56 8.56 11.1 13.5 17.1
125 5 141.3 6.6 2.8 3.4 6.55 9.53 9.53 12.7 15.9 19.1
150 6 168.3 7.1 2.8 3.4 7.11 10.97 11 14.3 18.3 22
200 8 219.1 8.2 2.8 3.8 6.4 8.18 10.3 12.7 12.7 15.1 19.3 20.6 23 22.2
250 10 273.1 9.3 3.4 4.2 6.4 9.27 12.7 12.7 15.1 19.3 21.4 25.4 28.6 25.4
300 12 323.9 9.5 4 4.6 6.4 10.3 14.3 12.7 17.5 21.4 25.4 28.6 33.3 25.4
350 14 355.6 9.5 4 4.8 6.4 7.9 11.1 15.1 12.7 19.1 23.8 27.8 31.8 35.7
400 16 406.4 9.5 4.2 4.8 6.4 7.9 12.7 16.7 12.7 21.4 26.2 31 36.5 40.5
450 18 457.2 9.5 4.2 4.8 6.4 7.9 14.3 19.1 12.7 23.8 29.4 34.9 39.7 45.2
500 20 508 9.5 4.8 5.5 6.4 9.5 15.1 20.6 12.7 26.2 32.5 38.1 44.5 50
550 22 558.8 9.5 4.8 5.5 6.4 9.5 22.2 12.7 28.6 34.9 41.3 47.6 54
600 24 609.6 9.5 5.5 6.4 6.4 9.5 17.5 24.6 12.7 31 38.9 46 52.4 59.5
650 26 660.4 9.5 7.9 13 12.7
700 28 711.2 9.5 7.9 13 12.7
750 30 762 9.5 6.4 7.9 7.9 13 12.7
800 32 812.8 9.5 7.9 13 17.5 12.7
850 34 863.6 9.5 7.9 13 17.5 12.7
900 36 914.4 9.5 7.9 13 19.1 12.7

ASTM A335 P91 Alloy Steel Pipe Price List

  • ASTM A335 P91 Alloy Steel seamless pipes
    US $2500-4100 / Ton (FOB Price)
  • seamless pipe astm A335 Alloy Steel P91
    US $20-1200 / Ton (FOB Price)
  • Alloy Steel ASTM A335 P91 seamless pipe
    US $500-2000 / Ton (FOB Price)
  • ASTM A335 P91 Alloy Steel High Pressure pipe
    US $850-2200 / Metric Ton (FOB Price)
  • sa335 P91 seamless pipe
    US $1.5-9 / Kilogram (FOB Price)
  • ASTM A335 P91 Alloy seamless pipe suppliers
    US $850-2200 / Metric Ton (FOB Price)
  • ASTM A335 Gr.P91 Chrome moly Pipe
    US $500-1000 / Ton (FOB Price)
We supply the ASTM A335 P11 Pipe Stock, ASTM A335 P91 Pipe Suppliers which tailored to your requirements: at the right time, in the right quantity and in the right place.

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