API 5L X52 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 X52 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 X52 steel pipe in PSL1 and PSL2.

API 5L X52 Equivalent Material

Specification API 5L x52 PSL1 ISO 3183 L360
Grades API 5L PSL2 X52N, X52Q, X52M L360N, L360Q, L360M

Chemical Composition for X52 PSL 1 pipe

Steel grades C,max b Mn, max b P, max S, max V, max
X52(Seamless) 0.28 1.4 0.3 0.3 /
X52(Welded) 0.26 1.4 0.3 0.3 /

Chemical Composition for X52 PSL 2 pipe

Grades C Si Mn P S V Nb Ti
X52N(Seamless) 0.24 0.45 1.4 0.025 0.015 0.1 0.05 0.04
X52Q(Seamless) 0.18 0.45 1.5 0.025 0.015 0.05 0.05 0.04
X52M(Welded) 0.22 0.45 1.4 0.025 0.015 d d d

API 5L X52 Mechanical Property

Grades Yield Strength Tensile Strength Elongation,%
API 5L X52 52 66 21

Differences between API 5L X52 PSL 1 and PSL 2

Charpy testing None required Required for all grades
Nondestructive inspection of seamless Only when the purchaser specifies   SR4 SR4 mandatory
Certification Certificates when specified per SR15 Certificates (SR 15.1) mandatory
Traceability Traceable only until all tests are passed, unless SR15 is specified Traceable after completion of tests (SR 15.2) mandatory
Hydrostatic Test Required Required