API 5L X70 Line Pipe


  • Nominal Pipe Size: 1/2″ to 48 ” O.D; Length: 5m to 12m.
  • Wall Thickness – Schedule 10 through 160, STD, XS, XXS.
  • Product Specification Level (PSL) : PSL 1, PSL 2
  • Manufacturing process: SSAW, LSAW, ERW welded/Seamless
  • Ends: Plain, beveled Ends and Threaded Ends

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