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ASME SA 335 P91 chrome welded pipe manufacturers in India


Grade P91 is an elevated temperature alloy steel. Pipes produced under specification ASTM A335 are referred to as ferritic steels. The ASTM A335 Grade P91 Seamless Pipe was designed keeping in mind the need for enhanced creep strength properties. Generally, steels have a temperature limit and cannot be used beyond a certain temperature point. The main reason for assigning temperature limits to steels is to prevent failure.

ASTM A335 Grade P91 Seamless Pipe

ASTM A335 Grade P91 Seamless Pipe
SA335 P91 Welded Pipe

SA335 P91 Welded Pipe

At elevated temperatures, conventional steels, unlike the ASTM A 335 P91 Pipe start to lose their microstructural form, which in turn leads to failure. Failure is visible by pipe bursts or cracks. But since the SA 335 P91 chrome welded pipe is well suited to sustain itself at elevated temperatures, the rate of failure occurring is minimal. Moreover, the corrosion resistance properties of the SA 335 P91 Seamless Pipe are much higher than carbon steels.  Grade P91 is a reference to the chemical composition of the alloy steel. A chrome moly steel, the chemistry of ASTM A335 P91 Alloy Steel Pipe is made up of 9% chromium in addition to 1% molybdenum and vanadium. The skillset of chromium alloyed steels includes higher rates of oxidation corrosion. Along with resistance to oxidation, the Alloy Steel P91 ERW Pipes are able to withstand very high temperatures and can be used in applications involving boilers, heaters, power generation, etc. The aforementioned applications function on the basis of temperature elevation, which is why many suppliers recommend the use of Alloy Steel P91 Pipe for said applications.

Check price & dimensions of Alloy Steel P91 Seamless Pipes, ASTM A 335 P91 Pipe



Specification of A335 Gr P91 Chrome Pipe

Specialized in Sizes in Large Diameter
OD 19.05 milimeter – 114.3 milimeter
WT 2.0 milimeter – 14 milimeter
Length maximum 16000 milimeter
Form Square, Hydraulic, Round, Rectangular, Etc.
Standard SA335 P91, ASTM A335 P91
Thickness From 3 to 12 milimeter
Size From 1/2 NB upto 36 NB
Schedule Schedule 40, 80, 160, XS, XXS
Tolerance
Cold rolled pipe: +/-0.05 milimeter
Cold drawn pipe: +/-0.1 milimeter
Craft Cold drawn / Cold rolled
Type ERW / Fabricated / Seamless / Welded
Length Double Random, Cut Length, Single Random, .
Specialized in SA335 P91
Additional Testing NACE TM0177, H2 SERVICE, NACE MR0175, IBR, NACE TM0284, SSC TEST, HIC TEST, etc.

Most Commonly Used ASTM A335 Grade P91 Seamless Pipe Types

Buy custome sizes A335 P91 Alloy Steel Pipes & P91 Seamless Pipes from our Inventory

Astm a335 p91 sch std seamless steel pipes

Astm a335 p91 sch std seamless steel pipes

ASTM A335 14 Inch p91 Sch160 Alloy Steel Pipes

ASTM A335 14 Inch p91 Sch160 Alloy Steel Pipes

ASME SA335 p91 24 inch hot rolled seamless steel pipes

ASME SA335 p91 24 inch hot rolled seamless steel pipes

ASTM A335 p91 material seamless alloy steel pipes

ASTM A335 p91 material seamless alloy steel pipes

3inch SCH80 ASTM a335 p91 material alloy pipes

3inch SCH80 ASTM a335 p91 material alloy pipes

Astm A335 p91 8 Inch Alloy Steel Pipes

Astm A335 p91 8 Inch Alloy Steel Pipes

4 Inch Schedule 40 Alloy ASTM A335 p91 Seamless Steel Pipes

4 Inch Schedule 40 Alloy ASTM A335 p91 Seamless Steel Pipes

ASTM A335 P91 seamless pipes

ASTM A335 P91 seamless pipes

SA335 P91 chrome pipes

SA335 P91 chrome pipes

A335 P91 High Pressure Steel Pipes

A335 P91 High Pressure Steel Pipes

ASTM A335 P91 Boiler Tube

ASTM A335 P91 Boiler Tube

ASME SA335 Grade P91 Alloy Steel Seamless Pipes

ASME SA335 Grade P91 Alloy Steel Seamless Pipes


Size Chart Of Alloy Steel P91 ERW Pipes

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

SA335 P91 Welded Pipe Weight chart

Wide range of styles and sizes in ASME SA335 P91 pipe, ASTM A335 P91 Boiler Tube
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
0.188 0.464 1.31 160 .0528 .0088
0.294 0.252 1.72 XXHY .0577 .0026
0.219 0.612 1.95 160 .1006 .0153
3/4 1.05 0.113 0.824 1.13 STD 40 .0705 .0277
0.147 0.546 1.09 XHY 80 .0478 .0122
0.154 0.742 1.48 XHY 80 .0853 .0225
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

A335 P91 Seamless Pipe Elongation Requirements

Calculated Minimum Elongation Values
Elongation in 2 in. or 50 mm, min %
Wall Thickness P5, P9, P11, P22 P91
in. 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

P91 alloy steel welded pipes Chemical Properties

Check sizes, dimensions and ready stock of SA 335 gr P91 alloy steel welded pipes, ASTM A335 P91 Chrome Pipe

p91 material chemical composition

Si, % Cr, % C, % Mo, % Mn, % P, % N, % S, % V, % Ni, % Nb, % Al, %
0.2 to 0.5 8.0 to 9.5 0.08 to 0.12 0.85 to 1.05 0.3 to 0.6 0.02 0.03 to 0.07 0.01 0.18 to 0.25 0.4 0.06 to 0.10 0.04

ASME SA 335 Grade P91 Pipe Mechanical Strength

Elongational Tensile Properties HB Yield Properties
20 585 250 415

SA335 Grade P91 ERW Pipe Equivalent Material

UNS ASTM Equivalent material ASME
K91560 A335 P91 K90901, T91, 1.4903, X10CrMoVNb9-1 SA335 P 91

We Are Specialised If Supplying A335 P91 chrome pipe in Specific Locations

Philippines, Belgium, Indonesia, Dammam -KSA A335 P91 Pipe
Europe, Thailand, France, Qatar A335 P91 Seamless Pipe
Thailand, Malaysia, Germany, Czechia 4 Inch Schedule 40 Alloy Astm A335 P91 Seamless Steel Pipe
Bangladesh, Finland, USA, Malaysia A335 Gr P91 Pipe
Kuwait, Brazil, Saudi Arabia (KSA), South Africa Sa335 P91 Chrome Pipe
Singapore, Singapore, South Africa, Bahrain Astm A335 P91 Sch Std Seamless Steel Pipe
UK, Nigeria, Australia, Philippines Astm A335 P91 Alloy Steel Seamless Pipe
Hong Kong, UAE, Malaysia, Oman 3" Sch80 Astm A335 P91 Material Alloy Pipe
Iran, Singapore, Italy, Chile Astm A335 Gr P91 Welded Pipe
Norway, Malaysia, Turkey, United Arab Emirates (UAE) A335 Gr P91 Seamless Steel Pipe
Russia, Dubai, Malaysia, Netherlands Astm A335 14 Inch P91 Sch160 Alloy Steel Pipe
Mexico, UK, Spain, Egypt Alloy Steel P91 Pipe
Malaysia, UAE, Europe, United Kingdom -UK P91 Chrome Pipe
Poland, Ellington -United States, Canada, UK 8 Inch Alloy Steel Pipe A335 Gr.p91
Canada, Singapore, Malaysia, Philippines Asme Sa335 P91 24 Inch Hot Rolled Seamless Steel Pipe
Romania, Malaysia, Japan, Europe P91 Alloy Steel Seamless Pipe
Malaysia, China, Colombia, Sweden 73mm Grade Astm A335 P91 Carbon Steel Seamless Pipe
Los Alamos -Mexico, Philippines, Taiwan, Malaysia A335 P91 High Pressure Steel Pipe
NY 12203 (USA), Malaysia, South Korea, Singapore Astm A335 P91 Boiler Tube