Seamless Steel Pipe

LINE PIPE

1.STANDARD: GB/T9711-1999,API 5L/ISO3183-2007


APPLICATION: Conveying of gas, water and oil in petroleum and natural gas industries


2. CHEMICAL COMPOSITION

Class

Grade

C≤

Mn≤

P≤

S≤

V≤

Nb≤

Ti≤

 

 

 

 

PSL1

L245/B

0.28

1.20

0.030

0.030

-

-

-

L290/X42

0.28

1.30

0.030

0.030

-

-

-

L320/X46

0.28

1.40

0.030

0.030

-

-

-

L360/X52

0.28

1.40

0.030

0.030

-

-

-

L390/X56

0.28

1.40

0.030

0.030

-

-

-

L415/X60

0.28

1.40

0.030

0.030

-

-

-

L450/X65

0.28

1.40

0.030

0.030

-

-

-

L485/X70

0.28

1.40

0.030

0.030

-

-

-

 

 

 

PSL2

L245N/BN

0.24

1.20

0.025

0.015

-

-

0.04

L290N/X42N

0.24

1.30

0.025

0.015

0.06

0.05

0.04

L320N/X46N

0.24

1.40

0.025

0.015

0.07

0.05

0.04

L360N/X52N

0.24

1.40

0.025

0.015

0.10

0.05

0.04

L390N/X56N

0.24

1.40

0.025

0.015

0.10

0.05

0.04

L415N/X60N

0.24

1.40

0.025

0.015

0.10

0.05

0.04

L450Q/X65Q

0.18

1.70

0.025

0.015

-

-

-

L485Q/X70Q

0.18

1.80

0.025

0.015

-

-

-

 

3.MECHANICAL PROPERTIES

 

 

Standard

 

Grade

Yield   strength (Mpa)

Tensile   strength(Mpa)

Elongation(%)

min

max

min

max

min

 

 

 

 

GB/T9711

API 5L

ISO3183

                                PSL1

L245/B

245


415


   

 

 

API SPEC 5L

L290/X42

290


415


L320/X46

320


435


L360/X52

360


460


L390/X56

390


490


L415/X60

415


520


L450/X65

450


535


    PLS2

L245N/BN

245

450

415

760

 

 

 

API SPEC 5L

L290N/X42N

290

495

415

760

L320N/X46N

320

525

435

760

L360N/X52N

360

530

460

760

L390N/X56N

390

545

490

760

L415N/X60N

415

565

520

760

L450Q/X65Q

450

600

535

760