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API 5L X70 PSL2 Seamless Pipe

The carbon steel based API 5L X70 Pipe has been mainly used in the petrochemical industries as well as the petroleum industry because it not only offers an economical method of transporting the ready product such as oil or natural gas across; but also because of their good mechanical properties. Speaking about the economics of the API 5L X70 Psl 1, not only is carbon steel cheaper due to its lower alloying cost, but this pipe is a loose standard quality for lines. Hence the API 5L Gr X70, unlike its stricter counterpart PSL 2 does not have stringent testing and chemistry. A reason API 5L Grade X70 PSL2 have much stricter protocols to be followed is because these pipes are designed with the intension of serving high pressured applications and hence they are required to be more durable as opposed to PSL 1.

API 5L X70 PSL2 Seamless Pipe

This being said, most manufacturers adhere to the International Organization for Standardization ISO 3183 while producing the Iso 3183 L485 Pipe. This holds true, especially for the API 5L X70 PSL2 where they have to mandatorily follow the additional requirements such as notch toughness, chemical composition as well as strength. The minimum yield strength of API 5L X70 Material is mentioned after the letter ‘X’ in PSI, which in this case is valued at 70000 PSI. Aside from being produced in a welded manner, the API 5L X70 Seamless Pipes can also be produced by either cold working or by hot forming, depending on the requirement of the application.

Specification List of API 5L X70 PSL2 Seamless Pipe

Size Chart 1/2” NB – 60” NB
LSAW / DSAW 16’OD TO 54′ OD (8 MM TO 50 MM THK)
Test H2 SERVICE, HIC / SSC TEST, NACE MR0175 / TM0177 / TM0284, IBR etc.
ERW 1/2” NB – 24” NB
Wall Thick. SCH10, 30, STD, 40, 20, 60, 120, XS, 80, 100, 140, 160, XXS, JIS, DIN,
SAW 16” NB – 100” NB
PSL Level
  • X70 PSL 1
  • X70 PSL 2
Standard API, ASTM, ISO 3183, ASME

Do You Know?

The micro-alloys elements in X70 steel pipe is Nb, V and Ti which does not exceed 0.15%. Because of which structure of the pipe is composed of acicular ferrite and bainite. Tests Referred API 5L X70 pipe are Hydrostatic Test, Bend Test, Flattening test etc.

Schedule Chart of API 5L X70 PSL2 Pipe

NPS
(in)
Outside Diameter
(in)
SCH 10 SCH 20 SCH 30 SCH STD SCH 40 SCH 60 SCH XS SCH 80 SCH 100 SCH 120 SCH 140 SCH 160 SCH XXS
Wall Thickness (in)
1/8 0.405 0.068 0.068 0.095 0.095
1/4 0.540 0.088 0.088 0.119 0.119
3/8 0.675 0.091 0.091 0.126 0.126
1/2 0.840 0.109 0.109 0.147 0.147 0.187 0.294
3/4 1.050 0.113 0.113 0.154 0.154 0.219 0.308
1 1.315 0.133 0.133 0.179 0.179 0.250 0.358
1 1/4 1.660 0.140 0.140 0.191 0.191 0.250 0.382
1 1/2 1.900 0.145 0.145 0.200 0.200 0.281 0.400
2 2.375 0.154 0.154 0.218 0.218 0.344 0.436
2 1/2 2.875 0.203 0.203 0.276 0.276 0.375 0.552
3 3.500 0.216 0.216 0.300 0.300 0.438 0.600
3 1/2 4.000 0.226 0.226 0.318 0.318
4 4.500 0.237 0.237 0.337 0.337 0.438 0.531 0.674
5 5.563 0.258 0.258 0.375 0.375 0.500 0.625 0.750
6 6.625 0.280 0.280 0.432 0.432 0.562 0.719 0.864
8 8.625 0.250 0.277 0.322 0.322 0.406 0.500 0.500 0.594 0.719 0.812 0.906 0.875
10 10.750 0.250 0.307 0.365 0.365 0.500 0.500 0.594 0.719 0.844 1.000 1.125 1.000
12 12.750 0.250 0.330 0.375 0.406 0.562 0.500 0.688 0.844 1.000 1.125 1.312 1.000
14 14.000 0.250 0.312 0.375 0.375 0.438 0.594 0.500 0.750 0.938 1.094 1.250 1.406
16 16.000 0.250 0.312 0.375 0.375 0.500 0.656 0.500 0.844 1.031 1.219 1.438 1.594
18 18.000 0.250 0.312 0.438 0.375 0.562 0.750 0.500 0.938 1.156 1.375 1.562 1.781
20 20.000 0.250 0.375 0.500 0.375 0.594 0.812 0.500 1.031 1.281 1.500 1.750 1.969
22 22.000 0.250 0.375 0.500 0.375 0.875 0.500 1.125 1.375 1.625 1.875 2.125
24 24.000 0.250 0.375 0.562 0.375 0.688 0.969 0.500 1.219 1.531 1.812 2.062 2.344
30 30.000 0.312 0.500 0.625 0.375 0.500
32 32.000 0.312 0.500 0.625 0.375 0.688
34 34.000 0.312 0.500 0.625 0.375 0.688
36 36.000 0.312 0.500 0.625 0.375 0.750
42 42.000 0.500 0.625 0.375 0.750

Chemical Element of API 5L X70 Pipe

C Si Mn P S V Nb Ti
API 5L X70 0.17 0.45 1.75 0.020 0.010 0.10 0.05 0.06

Grade X70 Pipe Mechanical Behaviour

Grade Yield Strength Mpa Tensile Strength Mpa Raito Elongation
min max min max max min
BN 245 450 415 655 0.93 f
BQ
X70Q 485 635 570 760 0.93 f

Equivalent Of API 5L X70 Pipe

DIN / WNR EN API Relevant grades
1.8905 StE 460 P460N API 5L Grade X70  A53 Gr. B, A106 Gr. B, API 5L Gr. B X70

Temperature Rating Of L485 Grade x70 steel material

API 5L X70 PSL2 Line Pipe hot-coated with epoxy powder
200°C
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