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API 5L Pipes for Pipelines

API 5L SPECIFICATION

API 5L pipes may be classified according to the following criteria:
1, Execution: seamless or welded (seamless pipes may be used up to 24 inches, LSAW above 24 inches, ERW up to 20 inches)
2, Specification level (API PSL1, PSL2): PSL1 is a standard quality used for pipelines, whereas PSL2 sets more stringent chemical, mechanical properties, and testing requirements
3, Surface finish: black, varnish painted, anti-rust oil, galvanized, coated externally (3PL) and/or lined internally
4, Ends types: plain, beveled, threaded ends

The main advantages of API 5L pipe are:
1, Resistance to cracking forces that may propagate in long pipelines
2, Sour service suitability
3, Rather inexpensive and long service life (at least grades B, X42)

Size Range
API 5L pipes are available in dimensions between from 2 to 28″ (seamless execution) and up to 80″ in welded execution (generally, LSAW i.e. longitudinal submerged arc welding).

API 5L PIPE CHEMICAL AND MECHANICAL PROPERTIES

API 5L PIPE PSL1 Chemical and Mechanical Properties

API 5L PIPE PSL1

Chemical Composition

Mechanical Property

C (Max)

Mn (Max)

P (Max)

S (Max)

TENSILE ( Min )

YIELD ( Min )

Psi X 1000

Mpa

Psi X 1000

Mpa

Grade A25

CL I

0.21

0.60

0.030

0.030

45

310

25

172

CL II

0.21

0.60

0.030

0.030

Grade A

0.22

0.90

0.030

0.030

48

331

30

207

Grade B

0.26

1.20

0.030

0.030

60

414

35

241

Grade X42

0.26

1.30

0.030

0.030

60

414

42

290

Grade X46

0.26

1.40

0.030

0.030

63

434

46

317

Grade X52

0.26

1.40

0.030

0.030

66

455

52

359

Grade X56

0.26

1.40

0.030

0.030

71

490

56

386

Grade X60

0.26

1.40

0.030

0.030

75

517

60

414

Grade X65

0.26

1.45

0.030

0.030

77

531

65

448

Grade X70

0.26

1.65

0.030

0.030

82

565

70

483


API 5L PIPE PSL2 Chemical and Mechanical Properties

API 5L PIPE
PSL2

Chemical Composition

Mechanical Property

C
(Max)

Mn
(Max)

P
(Max)

S
(Max)

Tensile

Yield

C. E. IMPACT ENERGY

Psi x 1000

Mpa

Psi x 1000

Mpa

PCM

IIW

J

FT/LB

Grade B

0.22

1.20

0.025

0.015

60 – 110

414 – 758

35 – 65

241 – 448

0.25

0.43

T/L 27/41

T/L 20/30

Grade X42

0.22

1.30

0.025

0.015

60 – 110

414 – 758

42 – 72

290 – 496

0.25

0.43

T/L 27/41

T/L 20/30

Grade X46

0.22

1.40

0.025

0.015

63 – 110

434 – 758

46 – 76

317 – 524

0.25

0.43

T/L 27/41

T/L 20/30

Grade X52

0.22

1.40

0.025

0.015

66 – 110

455 – 758

52 – 77

359 – 531

0.25

0.43

T/L 27/41

T/L 20/30

Grade X56

0.22

1.40

0.025

0.015

71 – 110

490 – 758

56 – 79

386 – 544

0.25

0.43

T/L 27/41

T/L 20/30

Grade X60

0.22

1.40

0.025

0.015

75 – 110

517 – 758

60 – 82

414 – 565

0.25

0.43

T/L 27/41

T/L 20/30

Grade X65

0.22

1.45

0.025

0.015

77 – 110

531 – 758

65 – 82

448 – 565

0.25

0.43

T/L 27/41

T/L 20/30

Grade X70

0.22

1.65

0.025

0.015

82 – 110

565 – 758

70 – 82

483 – 565

0.25

0.43

T/L 27/41

T/L 20/30

Grade X80

0.22

1.90

0.025

0.015

90 – 120

621 – 827

80 – 102

552 – 705

0.25

0.43

T/L 27/41

T/L 20/30


API 5L Equivalent Grades (ASTM, EN, DIN)

Line Pipe Materials: Werkstoff vs EN vs API

DIN

EN

API

1.0486   StE 285

API 5L Grade X42

1.0562   StE 355

P355N

API 5L Grade X52

1.8902   StE 420

P420N

API 5L Grade X60

1.8905   StE 460

P460N

API 5L Grade X70

High Yield Steel Pipes

1.0457   StE 240.7

L245NB

API 5L Grade B

1.0484   StE 290.7

L290NB

API 5L Grade X42

1.0582   StE 360.7

L360NB

API 5L Grade X52

1.8972   StE 415.7

L415NB

API 5L Grade X60

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Application Field

Oil & Gas
Oil & Gas
Chemical Industry
Chemical Industry
Marine Engineering
Marine Engineering
Construction Industry
Construction Industry
Power Generation
Power Generation
Machinery industry
Machinery industry