ASTM A335 P91 Seamless Pipe

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ASTM A335 P91 Seamless Pipe

ASTM A335 P91 Seamless Pipe

SA335 Gr P91 Alloy Steel Welded Pipe

SA335 Gr P91 Alloy Steel Welded Pipe

Alloy Steel P91 Erw Pipes

Alloy Steel P91 Erw Pipes

ASTM A335 P91 Pipe and ASME SA335 Grade P91 Alloy Steel Pipe manufacturer

ASTM A335 P91 Pipe formed by cold drawing or hot rolling procedures. The production is made complete with heat treatment. The Material P91 Pipe has 8% chromium, carbon, manganese, phosphorus, sulfur, silicon, molybdenum, vanadium, nickel, nitrogen, aluminum and niobium in the composition. The P91 Seamless Pipe suppliers produce these pipes in normalized and tempered, quenched and tempered conditions. The pipes have 415MPa minimum yield strength, 585MPa minimum tensile strength, 20% elongation rate at break and 250HB max hardness. The P91 Material Alloy Steel Pipe has these higher mechanical properties due to the addition of chromium, vanadium, molybdenum and niobium content. The outer diameters of the P91 Chrome Pipe range from 19.05mm to 114.3mm with wall thicknesses ranging from 2mm to 14mm. The maximum length of the pipes shale be 16000mm. The ASTM A335 Gr P91 Pipe can come in schedules 20 through XXS and higher. The form can be round, square, rectangular or hydraulic. The ASTM and ASME specifications cover the pipes of seamless, ERW, welded and fabrication types. These pipes are designated as ferritic steel pipes for high temperature services. The Welding P91 Pipe is used in oil and gas, marine, construction and other industrial applications. The SA335 P91 Material is the most expensive the ASTM A335 range. The pipes can perform under high temperatures with high corrosive conditions as well. The Alloy Steel P91 Pipe is also creep resistant and oxidation resistant than the other grades in this specification. we are one of the supplier who provide cut to length pipe in all grade which saves your cost. Rexal Tubes is a ASTM A335 P91 Seamless Pipe supplier who stocks pipes in all surface finish

Alloy steel P91 pipe

A335 Gr P91 Chrome Pipe and Alloy Steel P91 Pipe exporter in India

ASTM A335 P91 Specification
Specifications chart ASTM A 335 ASME SA 335
Dimensions table ASME, ASTM and API
Sizes in Inch 1/8 TO 30″NB IN
Tubing Sizes in Inch 0.5 to 5
Outer Diameter in MM 6 To 2500 Milimeter; wall thickness:1-200 milimeter
Schedule Chart Schedule 80S, Schedule 80, Schedule10, Schedule 40, Schedule XXS, Schedule 160, Schedule XS, Schedule 5 Supplier and Manufacturer
Length in Milimeter Within 13500 Milimeter
Type of pipe Fabricated/ Seamless
Form of pipe Hydraulic, Round
Cout Length Single and Double Random
End of pipes Beveled End, Plain, Treaded
Pipes Marking All Pipes are marked as follows: Supplier or Manufacturer’s Name, Standard, Length, Grade, Outer Diameter, Thickness, Heat Number
Supplier & Distributors Located in Calgary, Pimpri Chinchwad, Ankara, Janeiro, Sydney, Santiago, Kuwait, Mexico, Courbevoie, Ernakulam, Kolkata, Nagpur, Lagos, London, Ranchi, Montreal, Chennai, Perth, Ludhiana, Vadodara, New Delhi, Surat, Port of Spain, Coimbatore, Muscat, Khobar, Hyderabad, Dammam, Ahmedabad, Caracas, Bogota, Indore, Howrah, Rajkot, Istanbul, India, Mumbai, Gimhae si, Kanpur, Tau, Karachi, Jamshedpur, Bangalore, Noida, Manama, Gurgaon, Gujarat, Bengaluru, Riyadh, Abu Dhabi, Ahvaz, Thiruvananthapuram, Tehran, Ludhiana, Baroda, Melbourne
ASTM A335 Gr P91 Pipe Types
Astm A335 P91 High Alloy Seamless Steel Pipes

Astm A335 P91 High Alloy Seamless Steel Pipes

Astm A335 P91 Hollow Structral Seamless Steel Pipes

Astm A335 P91 Hollow Structral Seamless Steel Pipes

Astm A335 P91 Welded Pipes, Size: 1/2 Inch, 3/4 Inch, 1 Inch

Astm A335 P91 Welded Pipes, Size: 1/2 Inch, 3/4 Inch, 1 Inch

Black Astm A335 P91 Alloy Pipes, 3 Mm

Black Astm A335 P91 Alloy Pipes, 3 Mm

3m, 6m Round Alloy Steel Astm A335 P91 Pipes

3m, 6m Round Alloy Steel Astm A335 P91 Pipes

1/2 Inch P91 Alloy Steel Seamless Pipes

1/2 Inch P91 Alloy Steel Seamless Pipes

Round Astm A335 P91 Uns K91560 Alloy Steel Erw Pipes

Round Astm A335 P91 Uns K91560 Alloy Steel Erw Pipes

1/2inch Alloy Steel Astm A335 P91 Seamless Steel Pipes

1/2inch Alloy Steel Astm A335 P91 Seamless Steel Pipes

2 Inch Black P91 Alloy Steel Seamless Pipes

2 Inch Black P91 Alloy Steel Seamless Pipes

A355 P91 Alloy 12 Inch Seamless Steel Pipes

A355 P91 Alloy 12 Inch Seamless Steel Pipes

Astm A355 P91 Pipes 1/2inch To 24 Inch Sch 40 Sch 80 Sch 120

Astm A355 P91 Pipes 1/2inch To 24 Inch Sch 40 Sch 80 Sch 120

1.5mm Thick A335 P91 Material

1.5mm Thick A335 P91 Material

ASTM A335 P91 Chemical Composition
Carbon Manganese Phosphorus Sulfur Silicon Chromium Molybdenum Vanadium Nitrogen Nickel Aluminium Niobium
0.08 To 0.12 0.3 To 0.6 0.02 Maximum 0.01 Maximum 0.2 To 0.5 8.0 To 9.5 0.85 To 1.05 0.18 To 0.25 0.03 To 0.07 0.4 Maximum 0.04 Maximum 0.06 To 0.10

A335 P91 Material Distributor, Check P91 alloy steel welded pipes Properties

ASTM A335 P91 Seamless Pipe Properties
Tensile Strength Elongation Yield Strength
415 min 30 min 205 min
Heat Treatment of Material P91 Pipe
Grade Chart Type of Heat Treatment Normalizing Temp Range F Subcritical Tempering 
or Annealing 
Temp Range F 
Alloy P5 (b,c) Full / Isothermal Anneal    
  Normalize and Temper ***** 1250
  Subcritical Anneal (P5c only) ***** 1325 to 1375
Alloy P9 Full /or Isothermal Anneal    
  Normalize and Temper ***** 1250
Alloy P11 Full / Isothermal Anneal    
  Normalize and Temper ***** 1200
Alloy P22 Full / Isothermal Anneal    
  Normalize and Temper ***** 1250
Alloy P91 Normalize and Temper 1900-1975 1350-1470
  Quench and Temper 1900 To 1975 1350 To 1470
P91 Pipe Wall Thickness
ASTM A530 NPS Chart Outside Dia, inch Tolerance Chart
1/8≤Outer Diameter≤2-1/2 +20.0/-12.5
3≤Outer Diameter≤18, Wall Thickness/Outer Diameter≤5% +22.5/-12.5
3≤Outer Diameter≤18, Wall Thickness/Outer Diameter>5% +15.0/-12.5
Outer Diameter≥20, Wall Thickness/Outer Diameter≤5% +22.5/-12.5
Outer Diameter≥20, Wall Thickness/Outer Diameter>5% +15.0/-12.5
ASTM A450 Hot rolled Outside Dia, Milimeter Tolerance Chart, %
Outer Diameter≤101.6, Wall Thickness≤2.4 +40/-0
Outer Diameter≤101.6, 2.4<Wall Thickness≤3.8 +35/-0
Outer Diameter≤101.6, 3.8<Wall Thickness≤4.6 +33/-0
Outer Diameter≤101.6, Wall Thickness>4.6 +28/-0
Outer Diameter>101.6, 2.4<Wall Thickness≤3.8 +35/-0
Outer Diameter>101.6, 3.8<Wall Thickness≤4.6 +33/-0
Outer Diameter>101.6, Wall Thickness>4.6 +28/-0
Cold Drawn Outside Dia, Milimeter Tolerance Chart, %
Outer Diameter≤38.1 +20/-0
Outer Diameter>38.1 +22/-0
ASTM A335 P91 Seamless Pipe Uses
  • Power generation
  • Heaters/reheat lines
  • Oil services
  • Gas processing equipment
  • Petrochemical plants
  • Boilers
P91 Material Alloy Steel Pipe Tensile Strength
P-5 P-9 P-11 P-22 P-91
Tensile Strength
ksi 60 60 60 60 85
MPa 415 415 415 415 585
Yield Strength
ksi 30 30 30 30 60
MPa 205 205 205 205 415
P91 Chrome Pipe Characteristics
  • Non-deteriorating
  • Higher creep strength
  • Decreased thickness
A335 P91 Equivalent
ASTM ASME Equivalent material UNS
A335 P91 SA335 P91 T91, K90901, X10CrMoVNb9-1, 1.4903 K91560
Stockholders of Alloy Steel P91 ERW and Welded Pipe. View ASME SA335 P91 pipes Weight Chart
Alloy Steel P91 Pipe Weight Chart
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
UNS K11522 High Pressure Pipe suppliers, Ask for latest price list of ANSI B16.5 ASTM A335 P91 Seamless Ferritic Alloy-Steel Pipe
ASTM A335 P91 Seamless Pipe Cost
Description Price Per Ton in INR Price Per Ton in USA $ Price Per Ton in UAE Dirham
ASTM A335 P91 SCH80 6" Alloy Steel Seamless Pipe INR 29224.60 USA $ 400 AED 1469.19
ASTM A335 Alloy Steel P91 Seamless Pipes INR 36530.75 USA $ 500 AED 1836.49
high temp high pressure astm a335 p91 alloy steel pipe INR 73061.50 USA $ 1000 AED 3672.98
astm a335 grade p91 nace saw pipe INR 43836.90 USA $ 600 AED 2203.79
DN10 SCH40 Hot rolled ASTM A335 T9 P9 P11 P91 P22 P110 Alloy Seamless Steel Pipe INR 40183.83 USA $ 550 AED 2020.14
ASTM A335 P91 Pipe Size Chart
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
ASTM A335 P91 Pipe Physical Propperties
Temperature T
° C / ° F 
(° C / F)

Specific heat J / kgK
(Btu / lb ° F)
Thermal conductivity 
W / mK 
(Btu · in / ft 2 · h · ° F)
Electrical resistance
μΩ · cm 
(Ω circ / ft)
Young's modulus
kN / mm 2
(10 3 ksi)
Expansion coefficient from 20 ° C to T 
10 -6 / K 
(10 -6 / ° F)
20/68 460 (-) 26 (-)   218 (-)  
200/392       207 (-) 11.3 (-)
400/752       190 (-) 12.0 (-)
500/932   30 (-)     12.3 (-)
600/1112         12.6 (-)
650/1202       162 (-) 12.7 (-)
P91 Chrome Moly Pipe Tolerance Chart
ASTM A450
Hot rolled
Outside Diameter, mm
Tolerance, mm
OD≤101.6
+0.4/-0.8
101.6<OD≤190.5
+0.4/-1.2
190.5<OD≤228.6
+0.4/-1.6
Cold Drawn
Outside Diameter, mm
Tolerance, mm
OD<25.4
±0.10
25.4≤OD≤38.1
±0.15
38.1<OD<50.8
±0.20
50.8≤OD<63.5
±0.25
63.5≤OD<76.2
±0.30
76.2≤OD≤101.6
±0.38
101.6<OD≤190.5
+0.38/-0.64
190.5<OD≤228.6
+0.38/-1.14
ASTM A530 & ASTM A335
NPS
Outside Diameter, inch
Tolerance, mm
1/8≤OD≤1-1/2
±0.40
1-1/2<OD≤4
±0.79
4<OD≤8
+1.59/-0.79
8<OD≤12
+2.38/-0.79
OD>12
±1%
Surface Finish of ASTM A335 P91 Alloy Steel Pipe

Surface Finishes: Galv, FBE, Coal Tar, 3LPE, Mill Varnish, FBE Dual, Concrete Coating, Tape Wrap, Bare, 3LPP, Oiled
End Finishes: Beveled, Threaded, Square Cut, Coupled.

Alloy Steel P91 ERW Pipe Elogation
Wall Thickness P5, P9, P11, P22 P91
Inch mm Longitudinal Transverse Longitudinal
5/16 (0.312) 8 30 20 20
9/32 (0.281) 7.2 28 19 19
1/4 (0.250) 6.4 27 18 18
7/32 (0.219) 5.6 26 17
3/16 (0.188) 4.8 24 16
5/32 (0.156) 4 22 15
7/8 (0.125) 3.2 21 14
3/32 (0.094) 2.4 20 13
1/18 (0.062) 1.6 18   12
If you searching a supplier from these places check our suppliers below
Products We supplied to following Locations
ASTM A335 P91 SCH80 6" Alloy Steel Seamless Pipe Philippines, Canada, Malaysia, Singapore
ASTM A335 Alloy Steel Pipe P91 steel tube Romania, Europe, Japan, Malaysia
ASTM A335 Alloy Steel P91 P92 Seamless Pipes China, Colombia, Sweden, Malaysia
ASTM A335 P91 alloy steel pipe and tube Europe, UAE, United Kingdom -UK, Malaysia
5.8 m ASTM A335 P91 6" alloy Steel pipe Kuwait, Brazil, Saudi Arabia (KSA), South Africa
high temp high pressure astm a335 p91 alloy steel pipe Bahrain, South Africa, Singapore
astm a335 grade p91 nace saw pipe Australia, Philippines, UK, Nigeria
DN10 SCH40 Hot rolled ASTM A335 P91 Alloy Seamless Steel Pipe Hong Kong, Oman, UAE, Malaysia
ASTM A335 P91 boiler tube hot rolled high pressure seamless boiler steel pipe Iran, Chile, Singapore, Italy
ASTM A335 P91 high pressure seamless alloy steel pipe Norway, Turkey, United Arab Emirates (UAE), Malaysia
Hot Rolled 6 Inch ASTM A335 P91 Alloy Seamless Steel Pipes Belgium, Philippines, Dammam -KSA, Indonesia.
ASTM A335 P91 Incoloy800h Seamless Pipe 1/8"~40" Round Squared 2.5inch Stainless Steel Pipe France, Qatar, Thailand, Europe
ASTM A335 P91 Sch80 XS Alloy Steel Pipes Germany, Czechia, Malaysia, Thailand
Hot Rolled ASTM A335 ASME SA335 GR P91 Seamless Steel Alloy Pipes Bangladesh, Finland, USA, Malaysia
ASTM A335 P91 GI Schedule SCH 80 Galvanized Steel Pipes Dubai, Netherlands, Russia, Malaysia
ASTM A335 P11 P22 P91 sch40 seamless steel round pipes Mexico, Egypt, UK, Spain
ASTM A335 P91 seamless steel cracked pipes Poland, Canada, UK, Ellington -United States
ASTM A335 P91 Pipe stock of following Manufacturer
Jindal Saw Ltd

Jindal Saw Ltd

Tenaris

Tenaris

Wuxi

Wuxi

Yangzhou Lontrin Steel Tube

Yangzhou Lontrin Steel Tube

Indian Seamless Metal Tubes Limited

Indian Seamless Metal Tubes Limited

Bao Steel

Bao Steel

Sumitomo Metals

Sumitomo Metals

Maharastra Seamless Limited

Maharastra Seamless Limited

United Seamless Limited

United Seamless Limited

Valourec & Mannesman -v & m

Valourec & Mannesman -v & m