API 5L X46 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 X46 is a steel grade of API 5L which specifies the manufacture of two product levels (PSL1 and PSL2) line pipe. WLD Steel is one of the large manufacturers, suppliers of  API 5L steel pipe, we also provide 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 X46 steel pipe in PSL1 and PSL2.

API 5l X46 Material Equivalent

API 5L Specification for line pipe
Material Grade PSL1 L320 or x46
Material Grade PSL2 L320Q or X46Q
L320N or X46N
L320M or X46M

API 5l X46 Chemical Composition

Grades C Si Mn S V Nb Ti
X46 PSL 1(Seamless) 0.28 / 1.20 0.03 0.03 d d
X46 PSL1(Welded) 0.26 / 1.20 0.03 0.03 d d
X46 N 0.24 0.4 1.4 0.025 0.015 0.07 0.24
X46 Q 0.18 0.45 1.4 0.025 0.015 0.05 0.04
X46 M 0.22 0.45 1.3 0.025 0.015 0.05 0.04

API 5L X46 Mechanical Property

Grades Yield Strength, psi Tensile Strength, psi Elongation,in 2in
X46(PSL1) 46,400 63,100 c
X46N,X46Q,X46M(PSL2) 46,400-76,100 63,100-95,000 f

Differences between API 5L X46 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