Aug 26, 2025 Leave a message

Chemical composition of API 5L Grade X65Q PSL2 line pipe

The X65Q PSL2 steel pipe strictly complies with the PSL2 requirements of API SPEC 5L 46th Edition (Steel pipes for pipeline transportation systems in the petroleum and natural gas industries), covering core indicators such as chemical composition, tensile properties, and impact testing. The X65Q pipes supplied by GNEE Group undergo 100% ultrasonic testing (UT), radiographic inspection (RT), and hydrostatic testing to ensure defect-free delivery.

 

Dimension:

1)seamless OD:21.3-508mm WT:2-60mm
2)HFW/ERW OD:21.3-508mm WT:3.2-15.9mm
3)LSAW OD:406.4-1422mm WT:6.4-44.5mm
4)SSAW OD:219.1-2540mm WT:5.4-25.4mm

 

API 5L X65Q PSL2 pipeline

 

API 5L X65Q PSL2 welded/ seamless pipes Chemical composition:

Grade

PSL

Chemical Composition weight% , Max

C

Si

Mn

P

S

X65Q

PSL2

0.18

0.45

1.70

0.025

0.015

 

API 5L X65Q PSL2 Mechanical properties:

Grade

 

PSL

 

Yield Strength

 

Tensile Strength

 

Elongation %

Min

Min

Max

Min

Max

X65Q

PSL2

450 MPa (65300 PSI)

600 MPa (87000 PSI)

535 MPa (77600 PSI)

760 MPa (110200 PSI)

1940*A2/U0.9

Note:

A-Cross sectional area of the tensile test specimen.(mm)
U-Specified minimum ultimate tensile strength in MPa.

 

API 5L X65Q PSL2 Charpy impact test:

Grade

Absorbed Energy J 10x10x55 T-10-27

Average

Individual Specimen

Longitudinal

Transverse

Longitudinal

 

Transverse

X65Q

-

≥27J

-

≥20J

Note :

 

1. The test temperature is 0℃.

2. The axis of the notch shall be perpendicular to the pipe surface.

 

Heat treatment

All pipes shall be Quenched and Tempered according to a documented procedure.

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