The American Petroleum Institute specification API 5L is designed for transportation systems in the petroleum and natural gas industries for conveying gas, water, and oil. API 5L X70 is a steel grade of API 5L which specifies the manufacture of two product levels (PSL1 and PSL2) line pipe. WLD Steel also provides internal & external coating like Black paint, varnished, FBE coating, 3LPE coating and all lined pipe on steel pipes as per the customers’ requirement. WLD steel supply and manufactured a large inventory of API 5L X70 steel pipe in PSL1 and PSL2.
API 5l X70 PSL1 Equivalent
API 5L |
Specification for line pipe |
Pipe Grade |
PSL1 |
L485 or X70 |
Pipe Grade |
PSL2 |
L485Q or X70Q
L485M or X70M |
API 5l X70 Chemical Composition
Grades |
C |
Si |
Mn |
P |
S |
API 5L X70 |
0.17 |
0.45 |
1.75 |
0.02 |
0.01 |
API 5L X70 PSL 1 |
0.28 |
0.45 |
1.2-1.4 |
0.03 |
0.03 |
API 5L X70Q PSL 2 |
0.18 |
0.45 |
1.8 |
0.025 |
0.015 |
API 5l X70 Mechanical Property
Grades |
Yield Strength |
Tensile Strength |
Elongation |
X70 PSL 1 |
70,300 |
82,700 |
c |
X70Q, X65M PSL 2 |
70,300-92,100 |
82,700-110,200 |
0.93 |