API Spec 5L

NPS

Outside Diameter

API 5l Pipe Schedule

(in)

(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

0.54

0.088

0.088

0.119

0.119

3/8

0.675

0.091

0.091

0.126

0.126

1/2

0.84

0.109

0.109

0.147

0.147

0.187

0.294

3/4

1.05

0.113

0.113

0.154

0.154

0.219

0.308

1

1.315

0.133

0.133

0.179

0.179

0.25

0.358

1 1/4

1.66

0.14

0.14

0.191

0.191

0.25

0.382

1 1/2

1.9

0.145

0.145

0.2

0.2

0.281

0.4

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

3.5

0.216

0.216

0.3

0.3

0.438

0.6

3 1/2

4

0.226

0.226

0.318

0.318

4

4.5

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

0.5

0.625

0.75

6

6.625

0.28

0.28

0.432

0.432

0.562

0.719

0.864

8

8.625

0.25

0.277

0.322

0.322

0.406

0.5

0.5

0.594

0.719

0.812

0.906

0.875

10

10.75

0.25

0.307

0.365

0.365

0.5

0.5

0.594

0.719

0.844

1

1.125

1

12

12.75

0.25

0.33

0.375

0.406

0.562

0.5

0.688

0.844

1

1.125

1.312

1

14

14

0.25

0.312

0.375

0.375

0.438

0.594

0.5

0.75

0.938

1.094

1.25

1.406

16

16

0.25

0.312

0.375

0.375

0.5

0.656

0.5

0.844

1.031

1.219

1.438

1.594

18

18

0.25

0.312

0.438

0.375

0.562

0.75

0.5

0.938

1.156

1.375

1.562

1.781

20

20

0.25

0.375

0.5

0.375

0.594

0.812

0.5

1.031

1.281

1.5

1.75

1.969

22

22

0.25

0.375

0.5

0.375

0.875

0.5

1.125

1.375

1.625

1.875

2.125

24

24

0.25

0.375

0.562

0.375

0.688

0.969

0.5

1.219

1.531

1.812

2.062

2.344

30

30

0.312

0.5

0.625

0.375

0.5

32

32

0.312

0.5

0.625

0.375

0.688

34

34

0.312

0.5

0.625

0.375

0.688

36

36

0.312

0.5

0.625

0.375

0.75

42

42

0.5

0.625

0.375

0.75

Specified outside

API 5L Diameter tolerances mm (in)

API 5L Out-of-roundness tolerances mm (in)

diameter D mm (in) of API 5L Pipes

Pipe except at end a

Pipe end a,b,c

Pipe except at end a

Pipe end a,b,c

SMLS pipe

Welded pipe

SMLS pipe

Welded pipe

< 60.3 (2.375)

– 0.8 (0.031 ) to + 0.4 (0.016)

– 0.4 (0.016) to + 1.6 (0.063)

d

≥ 60.3 (2.375)

± 0.007 5 D

0.020 D

0.015 D

to

≤ 168.3 (6.625)

≥ 168.3 (6.625)

± 0.007 5 D

± 0.007 5 D

± 0.005 D,

to

but maximum

but maximum of ± 1.6 (0.063)

≤ 610 (24.00)

of + 3.2 (0.125)

> 610 (24.000)

± 0.01 D

± 0.005 D,

± 2.0 (0.079)

± 1.6 (0.063)

0.015 D

0.01 D,

to

but maximum

≤ 1 422 (56.00)

of + 4.0 (0.160)

but maximum of

but maximum of 13 (0.5),

15 (0.6),

for d / ts ≤ 75

for d / ts ≤ 75

by agreement

by agreement

for d / ts > 75

for d / ts > 75

> 1 422 (56 000)

as agreed

API 5L wall thickness t
mm (in)

API 5L Pipes Tolerances a
mm (in) mm (in)

API 5L SMLS pipe b

≤ 4,0 ( 0.157)

+ 0,6 (0.024)
– 0,5 (0.020)

> 4,0 ( 0.157) to < 25,0 (0.984)

+ 0,150
– 0,125

≥ 25,0 (0.984)

+3,7 (0.146) or + 0,1 t whichever is the greater
– 3,0 (0.120) or – 0,1 t whichever is the greater

API 5L Welded pipe c, d

≤ 5,0 (0.197)

± 0,5 (0.020)

> 5,0 (0.197) to<15,0 (0.591 )

± 0, 1 t

≥ 15,0 (0.591)

±1,5 (0.060)

a — if the purchase order specifies a minus tolerance for wall thickness smaller than the applicable value given in this table, the plus tolerance for wall thickness shall be increased by an amount sufficient to maintain the applicable tolerance range.
b — for pipe with D ≥ 355,6 mm (14.000 in) and t ≥ 25,0 mm (0.984 in) the wall thickness tolerance locally may exceed the plus tolerance for wall thickness by an additional 0,05 t, provided that the plus tolerance for mass (see 9.14) is not exceeded.
c — The plus tolerance for wall thickness does not apply to the weld area.
d — See 9.13.2 for additional restrictions.

Standard

Type of pipe

Class

Grade

API SPEC 5L

ISO 3183

SMLS

PLS1

L245B, L290 X42, L320 X46 , L360 X52,

L390 X56, L415 X60, L450 X65, L485 X70

PLS2

L245N BN, L290N X42N, L320N X46N,

L360N X52N, L390N X56N, L415N X60N,

L360Q X52Q, L390Q X56Q, L415Q X60Q , L485Q X70Q

PLS2 Sour Environment

L245NS BNS, L290NS X42NS, L320NS X46NS

L360NS X52NS, L390NS X56NS, L415NS X60NS,

L360QS X52QS, L390QS X56QS, L415QS X60QS L485QS X70QS

WELD

PLS1

L245B, L290 X42, L320 X46, L360 X52

L390 X56, L415 X60, L450 X65, L485 X70

PLS2

L245M BM, L290M X42M, L320M X46M,

L360M X52M, L390M X56M, L415M X60M,

L450M X65M, L485M X70M, L555M X80M,

PLS2 Sour Environment

L245MS BMS, L290MS X42MS, L320MS X46MS,

L360MS X52MS, L390MS X56MS, L415MS X60MS,

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

Mn

P

S

Tensile

Yield

C. E. IMPACT ENERGY

(Max)

(Max)

(Max)

(Max)

Psi x 1000

Mpa

Psi x 1000

Mpa

PCM

IIW

J

FT/LB

Grade B

0.22

1.2

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

1.3

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

1.4

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

1.4

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

1.4

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

1.4

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

1.9

0.025

0.015

90 – 120

621 – 827

80 – 102

552 – 705

0.25

0.43

T/L 27/41

T/L 20/30

Line Pipe Materials: Werkstoff vs EN vs API

Werkstoff/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