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Seamless Line Pipes

                                        

Tolerance of size:

Name

Outside Diametre（D）

Wall Thickness（S）

Pipe body

OD (mm)

Tolerance(mm)

OD(mm)

Tolerance(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


Chemical composition:


Standard

PSL


Steel grade

 Chemical composition, %

C

Mn

P

S

Si

V

Nb

Ti

CEpcm

API 5L

GB/T9711.2

PSL 1

A or L210

≤0.22

≤0.90

≤0.030

≤0.030

-

-

-

-

≤0.25

B or L245

≤0.28

≤1.20

≤0.030

≤0.030

-

-

-

-

≤0.25

x42 or L290

≤0.28

≤1.30

≤0.030

≤0.030

-

-

-

-

≤0.25

X46 or L320

≤0.28

≤1.40

≤0.030

≤0.030

-

-

-

-

≤0.25

X52 or L360

≤0.28

≤1.40

≤0.030

≤0.030

-

-

-

-

≤0.25

X56 or L390

≤0.28

≤1.40

≤0.030

≤0.030

-

-

-

-

≤0.25

X60 or L415

≤0.28

≤1.40

≤0.030

≤0.030

-

-

-

-

≤0.25

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

≤1.20

≤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

协商

Note: c: The sum of the columbium [niobium], and vanadium contents shall not exceed 0.06% except that, by agreement between the purchaser and
the manufacturer, an alternative maximum may be established.

 

Physical properities:

Standard

Product Specification Level

Steel grade

Yield Strength (min), Mpa

Tensile Strength(min), 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

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



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