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API 5L Line pipe PSL1 / PSL2

16" Line Pipe - Seamless-steel-pipe
Line pipe specification: 10.3-2032×1.7-39.7mm
 
Executive Standard: GB/T9711.1/API SPEC 5L
Uses: Used for gas, water and oil transportation in oil and natural gas industry
API SPEC 5L-2011 (Line Pipeline Specification), prepared and published by the American Petroleum Institute, is common across the world. Line pipe: It transports oil, gas or water pumped out of the ground to the oil and gas industry. The line pipe includes two kinds of seamless and welded pipe. The pipe end has a flat end, a threaded end and a socket end; the connection mode is a terminal welding, a coupling connection, a socket connection, and the like. The main material of the tube is L245, L290, L360, L418, L480, GR B, X42, X46, X56, X65, X70, X80, X100 and other steel grades.
According to the different performance requirements of GB/T9711.1 pipeline steel pipes, the tempering can be divided into the following types according to the different tempering temperatures:

low temperature tempering (150-250 degrees)
The structure obtained at low temperature tempering is tempered martensite. The purpose is to reduce the quenching internal stress and brittleness so as to avoid cracking or premature failure during use, while maintaining the high hardness and high wear resistance of the hardened steel. It is mainly used for all kinds of high-carbon cutting tools, measuring tools, GB/T9711.1 pipeline steel pipe, rolling bearings and carburizing parts. The hardness after tempering is generally HRC58-64.

 

Tempering at medium temperature (250-500 degrees)
The tempered troostite was obtained by tempering at medium temperature. Its purpose is to obtain high yield strength, elastic limit and higher toughness. Therefore, it is mainly used for the treatment of various GB/T9711.1 pipeline steel pipes and hot work molds. The hardness after tempering is generally HRC35-50.

 

high temperature tempering (500-650 degrees)
The structure obtained by high temperature tempering is tempered sorbite. The heat treatment combined with quenching and high temperature tempering is customarily called quenching and tempering. Its purpose is to obtain comprehensive mechanical properties with good strength, hardness, plasticity and toughness. Therefore, it is widely used in automobile, GB/T9711.1 pipeline steel, machine tools and other important structural parts, such as connecting rods, bolts, gears and shafts. The hardness after tempering is generally HB200-330.

Mechanical properties:

Standard

Product Level

Steel grade

Yield Strength (min), Mpa

Tensile Strength (MPa)

API 5L GB/T9711.2

PSL 1

A or L210

210

335

B or L245

245

415

X42 or L290

290

415

X46 or L320

320

435

X52 or L360

360

460

X56 or L390

390

490

X60 or L415

415

520

X70

483

565

PSL 2

BR or L245R

245~450

415~760

X42R or L290R

290~495

415~760

BN or L245N

245~450

415~760

X42N or L290N

290~495

415~760

X46N or L320N

320~525

435~760

X52N or L360N

360~530

460~760

X56N or L390N

390~545

490~760

X60N or L415N

415~565

520~760

X65N or L450N

425~566

525~760

X70 or L480

484~565

565~768

X80

552~690

621~827

Line pipe chemical element table:

Roduct Level

Steel grade

Chemical composition, %

C

Mn

P

S

Si

V

Nb

Ti

CEpcm

PSL 1

B or L245

≤0.28

≤1.20

≤0.030

≤0.030

X42 or L290

≤0.28

≤ 1.30

≤0.030

≤0.030

X46 or L320

≤0.28

≤ 1.40

≤0.030

≤0.030

X52 or L360

≤0.28

≤ 1.40

≤0.030

≤0.030

X56 or L390

≤0.28

≤ 1.40

≤0.030

≤0.030

X60 or L415

≤0.28

≤ 1.40

≤0.030

≤0.030

X70

≤0.28

≤ 1.40

≤0.030

≤0.030

PSL 2

BR or L245R

≤0.24

≤1.20

≤0.025

≤0.015

≤0.40

c

c

≤0.04

≤0.25

X42R or L290R

≤0.24

≤1.20

≤0.025

≤0.015

≤0.40

≤ 0.06

≤ 0.05

≤0.04

≤0.25

BN or L245N

≤0.24

≤1.20

≤0.025

≤0.015

≤0.40

c

c

≤0.04

≤0.25

X42N or L290N

≤0.24

≤ 1.30

≤0.025

≤0.015

≤0.40

≤ 0.06

≤ 0.05

≤0.04

≤0.25

X46N or L320N

≤0.24

≤ 1.40

≤0.025

≤0.015

≤0.40

≤0.07

≤ 0.05

≤0.04

≤0.25

X52N or L360N

≤0.24

≤ 1.40

≤0.025

≤0.015

≤0.45

≤0.10

≤ 0.05

≤0.04

≤0.25

X56N or L390N

≤0.24

≤ 1.40

≤0.025

≤0.015

≤0.45

≤0.10

≤ 0.05

≤0.04

≤0.25

X60N or L415N

≤0.24

≤ 1.40

≤0.025

≤0.015

≤0.45

≤0.10

≤ 0.05

≤0.04

X65N or L450N

≤0.24

≤ 1.40

≤0.025

≤0.015

≤0.45

≤0.10

≤ 0.05

≤0.04

X70N

≤0.24

≤ 1.40

≤0.025

≤0.015

≤0.45

≤0.10

≤ 0.05

≤0.04

X80

≤0.24

≤ 1.40

≤0.025

≤0.015

≤0.45

≤0.10

≤ 0.05

≤0.04

standard:

API SPEC 5L – American Petroleum Institute Standard

GB/T9711 – China National Standard

use:

Oxygen, water and oil pipelines used in the oil and gas industry

The main production steel grade:

B, X42, X52, X60, X65, X70 L245 L290 L320 L360 L390 L450 L485

Size tolerance:

Steel pipe type

Steel pipe outside diameter (D)

Steel pipe wall thickness (S)

 

 

Body

Steel tube outside diameter (mm)

Allowable deviation (mm)

Steel tube outside diameter (mm)

Allowable deviation (mm)

≥ 60.3 and S<20

±0.75%

≤73.0

+15% ,-12.5%

 

≥60.3 and S≥20

±1.00%

>73.0 and S<20

+15% ,-12.5%

 

 

 

>73.0 and S≥20

+17.5% ,-10

 

Mechanical properties:

standard

Grade

Tensile strength (MPa)

Yield (MPa)

Yield ratio

Elongation(%)

°C impact power 
Akv (J)

Heat treatment

API SPEC 5L 
GB/T9711

L245/B

≥415

245 to 440

≤0.80

twenty two

≥40

Normal fire

API SPEC 5L 
GB/T9711

L290/X42

≥415

290 to 440

≤0.80

twenty one

≥40

Normal fire

API SPEC 5L 
GB/T9711

L360/X52

≥460

360 to 510

≤0.85

20

≥40

Normal fire

API SPEC 5L 
GB/T9711

L415/X60

≥520

415 to 565

≤0.85

18

≥40

Normal fire

API SPEC 5L 
GB/T9711

L450/X65

≥535

450 to 570

≤ 0.90

18

≥40

Quenching + tempering

API SPEC 5L 
GB/T9711

L485/X70

≥570

485 to 605

≤ 0.90

18

≥40

Quenching + tempering

chemical composition:

standard

Grade

chemical composition(%)

CEV (%)

 

 

 

 

 

 

 

C

Si

Mn

P

S

V

Nb

Ti

 

 

 

API SPEC 5L 
GB/T9711.2

B

≤0.16

≤0.40

≤1.10

≤0.020

≤0.010

≤0.42

X42

≤0.17

≤0.40

≤1.20

≤0.020

≤0.010

≤ 0.05

≤ 0.05

≤0.04

≤0.42

 

X52

≤0.20

≤0.45

≤ 1.60

≤0.020

≤0.010

≤0.10

≤ 0.05

≤0.04

≤0.45

 

X60

≤0.21

≤0.45

≤ 1.60

≤0.020

≤0.010

≤0.15

≤ 0.05

≤0.04

protocol

 

X65

≤0.16

≤0.45

≤ 1.60

≤0.020

≤0.010

≤ 0.06

≤ 0.05

≤ 0.06

≤0.45

 

X70

≤0.16

≤0.45

≤1.70

≤0.020

≤0.010

≤ 0.06

≤ 0.05

≤ 0.06

≤0.45

 

Note:

1.0.015%≤Altot<0.06%;N≤0.012%;Al/N≥2/1;Cu≤0.25%;Ni≤0.30%;Cr≤0.30%;Mo≤0.10%

2. V+Nb+Ti≤0.15

3. X60, X65, X70 after consultation Mo ≤ 0.35%

American Petroleum Institute Standard (API SPEC 5L) Line Pipe Spec Sheet

Nominal size 
Nominal Size

Outer 
Diameter Outside Diameter

Wall thickness 
Wall Thickness

Flat 
-end Weight

 

 

 

Inch

Mm

Inch

Mm

Lb/ft

Kg/m

 

0.405

0.405

10.29

0.095

2.4

0.31

0.47

0.54

0.54

13.72

0.088

2.2

0.43

0.62

0.54

13.72

0.119

3.0

0.54

0.79

 

0.675

0.675

17.15

0.091

2.3

0.57

0.84

0.675

17.15

0.126

3.2

0.74

1.10

 

0.84

0.84

21.34

0.109

2.8

0.85

1.28

0.84

21.34

0.147

3.7

1.09

1.61

 

1.05

1.05

26.67

0.113

2.9

1.13

1.70

1.05

26.67

0.154

3.9

1.48

2.19

 

1.315

1.315

33.4

0.133

3.4

1.68

2.52

1.315

33.4

0.179

4.6

2.17

3.21

 

1.660

1.660

42.2

0.145

3.7

2.72

3.43

1.660

42.2

0.191

4.9

3.00

4.51

 

1.900

1.660

42.2

0.382

9.7

5.22

7.77

1.900

48.3

0.145

3.7

2.72

4.07

 

1.900

48.3

0.200

5.1

3.63

5.43

 

1.900

48.3

0.400

10.2

6.41

9.58

 

2 3/8

2.375

60.3

0.109

2.8

2.64

3.97

2.375

60.3

0.125

3.2

3.00

4.51

 

2.375

60.3

0.141

3.6

6.36

5.03

 

 

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