API 5L seamless pipe is one of our most popular products.

Federal Steel stocks a full line of API 5L Line Pipe. Sizes 2" to 48". In wall thickness STD to 4" thick.

API 5L Seamless Steel Pipe Specifications

We stock 3 different methods of manufacture: Seamless, ERW, and DSAW

API 5L is typically used in the Oil and Gas Industry and is inventoried in grades:

  • X42
  • X52
  • X65
  • X70

See charts below for details of physical and chemical properties.

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API 5L Mechanical Properties

PropertiesAPI 5L PSL-1 X52API 5L PSL-2 X52
Tensile strength, min/max, psi (MPa)66,700(460) / NA66,700 / 110,200
Yield strength, min/max, psi (MPa)52,000 (300) / NA52,000 / 76,900

Note: For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.35%.

API 5L Chemical Properties

PSLCMnP, max.S, max.Si, min.VNbTiOtherCEIIWCEpcm


a. For each reduction of 0.01% below the specified maximum concentration for carbon, an increase of 0.05% above the specified maximum concentration for manganese is permissible, up to a maximum of 1.65% for > grades B, but < X52; up to a maximum of 1.75% for grades >X52, but <X70; and up to a maximum of 2.00% for grade X70.

b. The sum of the niobium, vanadium, and titanium concentrations shall be < 0.06%.

c. Unless otherwise agreed, 0.50% maximum for copper, 0.30% maximum for nickel, 0.30% maximum for chromium, and 0.12% maximum for molybdenum.

Select Differences Between PSL 1 & PSL 2

AttributesPSL 1PSL 2
CVN impact (Charpy) testingNone requiredRequired for all grades
Nondestructive Inspection of SeamlessOnly when purchaser specifies SR4SR4 mandatory
CertificationCertificates when specified per SR15Certificates (SR 15.1) mandatory
TraceabilityTraceable only until all tests are passed, unless SR15 is specifiedTraceable after completion of tests (SR 15.2) mandatory
Hydrostatic TestRequiredRequired

Note: This is summarized information from API Specification 5L. Please refer to the specific Standard or Specification or contact us for more details.

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