API Pipe

Grade Chemical Composition Yield Strength
Tensile Strength
Yield to Tensile  Elongation
C Si Mn P S V Nb Ti min. (KSI) min. (KSI) Ratio (max) %
API 5L X52 0.16 0.45 1.65 0.020 0.010 0.07 0.05 0.04 52 66 0.93 21
API 5L X56 0.16 0.45 1.65 0.020 0.010 0.07 0.05 0.04 56 71 0.93 19
API 5L X60 0.16 0.45 1.65 0.020 0.010 0.08 0.05 0.04 60 75 0.93 19
API 5L X65 0.16 0.45 1.65 0.020 0.010 0.09 0.05 0.06 65 77 0.93 18
API 5L X70 0.17 0.45 1.75 0.020 0.010 0.10 0.05 0.06 70 82 0.93 17

API 5L General Information

The API SPEC 5L specification provides standards for pipe suitable for use in conveying gas, water, and oil in the natural gas and oil industries. The API SPEC 5L covers seamless and welded steel line pipe. It includes plain-end, threaded-end, and belled-end pipe, as well as through-the-flowline (TFL) pipe, and pipe with ends prepared for use with special couplings.

Pipe manufactured to ASTM106 Grade A or B are not interchangable with API 5L. Requirements to API 5L X grades are more stringent; rolled grades are not acceptable and rework is not allowed. Moreover, particular attention is given to toughness and toughness tests for sour services and higher pressure & temperature classes.

API 5L carbon steel pipes are widely available and relatively affordable, making them a popular choice for very large projects such as pipelines. Canada Steel and Casing Imports have a Surplus stock of API 5L Grade B Seamless Pipes and Welded Pipes. API 5L Grade B seamless pipes are one of our most widely used grades of carbon steel and are readily available ex-stock for all standard thicknesses up to SCH160. Canada Steel and Casing Imports is a trusted distributor & exporter of API 5L line pipes manufactured by manufacturers in India such as MSL, ISMT, and JINDAL SAW.

End Connections for Line Pipes: Plain, Bevel, Screwed, Threaded

Type: Seamless / ERW / Welded / Fabricated / CDW

Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes

Length: Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths

End: Plain End, Beveled End, Treaded

End Protection: Plastic Caps

Outside Coating: Black Painting, Anti-Corrosion Oil, Galvanised Finish, Finish as per customer Requirements

Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports, India Boiler Regulations (IBR) Test Certificate

  • API 5L pipe
  • API 5L pipe sizes
  • API 5L pipe dimensions
  • API 5L pipe schedule
  • API 5L grade b
  • API 5L grade b psl1 specification
  • API 5L x42 pipe specification
  • API 5L x42 psl2
  • API 5L x42 pipe dimensions
  • API 5L x42 pipe wall thickness
  • API 5L x42 pipe weight Seamless steel pipe
  • API 5L x42 API 5L x52 pipe sizes
  • API 5L x52 specification
  • API 5L x52 pipe dimensions
  • API 5L x52 pipe supplier
  • API 5L x52 pipe supplier in Canada
  • API 5L x56 pipe specifications
  • API 5L grade x 56 API 5L x65 psl2
  • API 5L x65 pipe
  • API 5L x65 pipe weight
  • API 5L x65 pipe schedule
  • API 5L x65 pipe suppliers
  • API 5L x65 pipe wall thickness
  • API 5L x70 pipe specifications
  • API 5L x70 pipe X70 pipe suppliers

Strength Levels & Desulphurization

Gas, water and oil transportation - preferred in long pipelines due to inexpensiveness
Pipeline steel - resistance to crack propogation
Line Pipe / Sour Service Line Pipes

API 5L Benefits & Applications

Manganese sulphides are typical inclusions in all manganese alloyed steels. Because they tend to segregate resulting in reduced impact strength, sulphure content needs to be minimized. We specify maximum 0.007%.

API Standard Specification for Line Pipe

The American Petroleum Institute specification API 5L addresses seamless and welded steel line pipe for pipeline transportation systems in the petroleum and natural gas industries. API 5L is suitable for conveying gas, water, and oil.

Specifications for API 5L adhere to the International Organization for Standardization ISO 3183, standardizing pipeline transportation systems within the materials, equipment, and offshore structures for natural gas, petroleum, and petrochemical industries. When authoring the standards, the technical committee recognized that there are two basic Product Specifications Levels (PSL) of technical requirements and therefore developed PSL 1 and PSL 2. PSL 1 is a standard quality for line pipe where PSL 2 contains additional chemical, mechanical properties, and testing requirements.

Grades covered by this specification are A25, A, B and "X" Grades X42, X46, X52, X56, X60, X65, X70, and X80. The two-digit number following the "X" indicates the Minimum Yield Strength (in 000's psi) of pipe produced to this grade.