Line Pipe

Application

It is widely used in conveying gas, water, and oil in both the oil and natural gas industries

Size

21.3-820mm for ERW,406-1524mm for LSAW,219-3500mm For SSAW,10.3-660mm for SMLS

Standard

Main Chemical Composition(%)

API 5L PSL1

Grade

C

Mn

P

S

Si

A

≤0.22

≤0.90

≤0.030

≤0.030

--

B

≤0.26

≤1.20

≤0.030

≤0.030

X42

≤0.26

≤1.30

≤0.030

≤0.030

--

X46

≤0.26

≤1.40

≤0.030

≤0.030

--

X52

≤0.26

≤1.40

≤0.030

≤0.030

--

X56

≤0.26

≤1.40

≤0.030

≤0.030

--

X60

≤0.26

≤1.40

≤0.030

≤0.030

--

API 5L PSL2

B

≤0.22

≤1.20

≤0.025

≤0.015

≤0.45

X42

≤0.22

≤1.30

≤0.025

≤0.015

≤0.45

X46

≤0.22

≤1.30

≤0.025

≤0.015

≤0.45

X52

≤0.22

≤1.40

≤0.025

≤0.015

≤0.45

X56

≤0.22

≤1.40

≤0.025

≤0.015

≤0.45

X60

≤0.12

≤1.60

≤0.025

≤0.015

≤0.45

Mechanical Properties

API 5L PSL1

Steel Grage

yield strength

MPa/(psi)

Tensile strength

MPa/(psi)

Elongation

%

B

245(35500)-450(65300)

415（60200）-760(110200)

21~27

X42

290(42100)-495(71800)

415（60200）-760(110200)

21~27

X46

320(46400)-525(76100)

435（63100）-760(110200)

20~26

X52

360(52200)-530(76900)

460（66700）-760(110200)

20~26

X56

390(56600)-545(79000)

490（71100）-760(110200)

20~24

API 5L PSL2

B

245(35500)-450(65300)

415（60200）-760(110200)

21~27

X42

290(42100)-495(71800)

415（60200）-760(110200)

21~27

X46

320(46400)-525(76100)

435（63100）-760(110200)

20~26

X52

360(52200)-530(76900)

460（66700）-760(110200)

20~26

X56

390(56600)-545(79000)

490（71100）-760(110200)

20~24

Dimension Tolerance

API 5L PSL1/PSL2

Tolerance of Wall thickness

Outer Diameter Tolerance

Thickness

mm (inch)

Tolerance

mm

Outer Diameter

mm (inch)

OD tolerance

≤5.0(0.197)

±0.5（0.020）

＜60.3（2.375）

-0.8(0.031) to +0.4(0.016)

＞5.0（0.197）to 15.0（0.591）

±0.1t

≥60.3（2.375）to ≤168.3（6.625）

±0.0075D

≥15.0（0.591）

±1.5（0.060）

＞168.3 to ≤610（24.000）

±0.0075D（max ±3.2mm）

＞610（24.000）

±0.005D(Max±4.0mm)