ASTM A335 P11 Pipes is a specification of pipes for used in high temperature services such as in the oil refineries, petroleum industries, petrochemical applications and in natural gas processing plants.

P11 Seamless Pipes
ASTM A335 P11 Pipes SA335 Grade P11

These pipes could be used in water lines as well. Hi-tech Metal & Tubes is one of the leading P11 Pipes suppliers and we produce different varieties of these pipes in various sizes and shapes as well. The A335 P11 Material is made up of chromium, nickel, molybdenum and vanadium. This composition makes the pipes extremely corrosion resistant. The SA335 Grade P11 pipes are also highly resistant to oxidation under room temperatures. There are seamless and welded pipes in this specification. The A335 P11 Welded Pipes is made through electric resistant weld procedures whereas the seamless pipes are made through cold drawing. Our ASTM A335 P11 Alloy Steel Pipes is stronger and has hardness due to the chromium and molybdenum mixture. Our P11 Seamless Pipe is used in applications that demand precise dimensions. There are different varieties of P11 Steel Pipe that range from 3/8 inches to 30 inches in diameter. The applications determine the dimensions of the pipes as well. We offer a lucrative pricing for all our Alloy Steel A335 P11 pipe products and customers are welcome for their inquiries and orders.


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ASTM A335 P11 Pipes are utilized within the vitality industry for high temperature and very low-temperature service, or for applications with very high pressures.


A335 Gr P11 Pipes Equivalent Grade

ASTM ASME Equivalent Material JIS G 3458 UNS BS DIN ISO ABS NK LRS
A335 P11 SA335 P11 T11 STPA 23 K11597 3604 P1 621 - - ABS 11 KSTPA 23 -

Specification Chart of ASTM A335 Grade P11

ASTM A335 P11 Pipes Standard ASTM A335 P11, SA335 P11
SA335 Grade P11 Thickness 3 To 12 Mm
A335 Gr P11 Pipes Tolerance Cold drawn pipe: +/-0.1 MM
Cold rolled pipe: +/-0.05 MM
P11 Seamless Pipes Schedules Schedule 40, 80, 160, XS, XXS
ASTM A335 P11 Material Size 1/2 Inch NB to 36 Inch NB
SA335 Gr P11 Type Seamless / ERW / Welded / Fabricated

Chemical Analysis of Alloy Steel A335 P11

Alloy Steel P11 C Cr Mn Mo P S Si
0.05 – 0.15 1.00 – 1.50 0.30 – 0.60 0.44 – 0.65 0.025 max 0.025 max 0.50 – 1.00

Mechanical And Physical Properties of ASTM A335 Gr P11 Pipes

Tensile Strength, MPa Yield Strength, MPa Elongation
415 min 205 min 30 min

Size Chart of P11 Seamless Pipes

Size NPS Pipe O.D. Wall Thickness Pipe I.D. Weight per Foot
1/2 0.84 0.109 0.622 0.85
0.147 0.546 1.09
0.188 0.464 1.31
0.294 0.252 1.72
3/4 1.05 0.113 0.824 1.13
0.154 0.742 1.48
0.219 0.612 1.95
0.308 0.434 2.44
1 1.315 0.133 1.049 1.68
0.179 0.957 2.17
0.250 0.815 2.85
0.358 0.599 3.66
1 1/4 1.66 0.140 1.380 2.27
0.191 1.278 3.00
0.250 1.160 3.77
0.382 0.896 5.22
1 1/2 1.90 0.145 1.610 2.72
0.200 1.500 3.63
0.281 1.338 4.86
0.400 1.100 6.41
2 2.375 0.109 2.157 2.64
0.154 2.067 3.66
0.218 1.939 5.03
0.250 1.875 5.68
0.281 1.813 6.29
0.344 1.687 7.47
0.436 1.503 9.04
2 1/2 2.875 0.120 2.635 3.53
0.203 2.469 5.80
0.216 2.443 6.14
0.250 2.375 7.02
0.276 2.323 7.67
0.375 2.125 10.02
0.552 1.771 13.71
3 3.50 0.120 3.260 4.34
0.156 3.188 5.58
0.172 3.156 6.12
0.188 3.124 6.66
0.216 3.068 7.58
0.250 3.000 8.69
0.281 2.938 9.67
0.300 2.900 10.26
0.438 2.624 14.34
0.600 2.300 18.6
3 1/2 4.0 0.120 3.760 4.98
0.226 3.548 9.12
0.250 3.500 10.02
0.281 3.438 11.17
0.318 3.364 12.52
0.636 2..728 22.87
4 4.5 0.120 4.260 5.62
0.156 4.188 7.24
0.188 4.124 8.67
0.203 4.094 9.32
0.219 4.062 10.02
0.237 4.026 10.80
0.250 4.000 11.36
0.281 3.938 12.67
0.312 3.876 13.97
0.337 3.826 15.00
0.438 3.624 19.02
0.531 3.438 22.53
0.674 3.152 27.57
5 5.563 0.188 5.187 10.80
0.219 5.125 12.51
0.258 5.047 14.63
0.281 5.001 15.87
0.312 4.939 17.51
0.344 4.875 19.19
0.375 4.813 20.80
0.500 4.563 27.06
0.625 4.313 32.99
0.750 4.063 38.59
6 6.625 0.109 6.407 7.59
0.134 6.357 9.30
0.156 6.313 10.79
0.188 6.249 12.94
0.203 6.219 13.94
0.219 6.187 15.00
0.250 6.125 17.04
0.280 6.065 18.99
0.312 6.001 21.06
0.344 5.937 23.10
0.375 5.875 25.05
0.432 5.761 28.60
0.500 5.625 32.74
0.562 5.501 36.43
0.625 5.375 40.09
0.719 5.187 45.39
0.864 4.897 53.21
1.000 4.625 60.13
1.125 4.375 66.14