API 5L pipelines are widely used for transporting oil, natural gas, water, and for the natural gas industry. API 5L refers to the American Petroleum Institute's standard, which is prepared and issued worldwide.Oil, crude oil, natural gas, water, or natural gas is transported underground through API 5L pipelines to oil and gas companies for further processing. Oil and gas pipelines include seamles pipes and welded pipes, and have three types of ends: plain, threaded, and socketed. The main steel grades are B, X42, X46, X52, X56, X65, and X70.
After dozens of revisions, the latest API SPEC 5L, version 46 (released in 2018), has made significant updates to version 45, including requirements for welded joints, an expanded scope of non-destructive testing, and the addition of requirements for longitudinal plastic strain capacity.
This standard is harmonized with the ISO 3183 international standard, achieving global standard consistency.
The standard specifies two product specification levels: PSL1 and PSL2. PSL2 has stricter mandatory requirements for carbon equivalent, notch toughness, maximum yield strength, and tensile strength, making it suitable for more demanding applications.
Ratings: X1 or L2 (N, Q, M, R) in PSL52 and PSL390
Seamless Outer Diameter: 21.3mm – 660mm, 1/2” – 26”
ERW and HFW Piping: 1/2” – 24”
LSAW and SSAW: 16” – 100”
Wall Thickness Tables: SCH 40, SCH STD, SCH80, SCH XS, SCH 160, SCH XXS, etc.
Lengths: DRL, SRL, 20FT, 40FT
Ends: Plain, Angled, Threaded
Available Coatings: Black Paint, Varnish, FBE, 3PE, 3LPE, 3PP, CRA Coating and Lining
Overview of API 5L Standard
The API 5L standard was first published in 1926, initially including only three steel grades: A25, A, and B. With the development of industrial needs, API released the API 5LX standard in 1947, adding three higher-level steel grades: X42, X46, and X52.After dozens of revisions, the latest API SPEC 5L, version 46 (released in 2018), has made significant updates to version 45, including requirements for welded joints, an expanded scope of non-destructive testing, and the addition of requirements for longitudinal plastic strain capacity.
This standard is harmonized with the ISO 3183 international standard, achieving global standard consistency.
The standard specifies two product specification levels: PSL1 and PSL2. PSL2 has stricter mandatory requirements for carbon equivalent, notch toughness, maximum yield strength, and tensile strength, making it suitable for more demanding applications.
API 5L X52 Line Pipe Specifications
Standards: API 5L, ISO 3183Ratings: X1 or L2 (N, Q, M, R) in PSL52 and PSL390
Seamless Outer Diameter: 21.3mm – 660mm, 1/2” – 26”
ERW and HFW Piping: 1/2” – 24”
LSAW and SSAW: 16” – 100”
Wall Thickness Tables: SCH 40, SCH STD, SCH80, SCH XS, SCH 160, SCH XXS, etc.
Lengths: DRL, SRL, 20FT, 40FT
Ends: Plain, Angled, Threaded
Available Coatings: Black Paint, Varnish, FBE, 3PE, 3LPE, 3PP, CRA Coating and Lining
| Api 5l Grade X52 Lsaw Pipe Standard | API 5L X52 (Specification for Line Pipe - ANSI/API specification 5L - 44th Edition, October 1, 2007) |
| Api 5l X52 Steel Pipe End | Plain, Bevel, Screwed, Threaded |
| Packing | API 5L X52 GR. B Pipe Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests |
| Testing and Inspection Reports | EN 10204 3.1, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, Destructive Test Report, Non Destructive Test Reports, Mill TC EN 10204 3.1, NABL Approved Lab, Chemical and Mechanical Reports, India Boiler Regulations (IBR) Test Certificate |
| Api 5l X52 Material Sizes | Nominal Pipe Size 1/2" to 48 " O.D. |
| Wall Thickness - Schedule 10 through 160, STD, XS, XXS. | |
| Application & uses | Suitable for Conveying gas, water, oil, and other liquefied media. |
| API 5L X52 Pipes Type | Seamless / ERW / Welded / Fabricated / CDW |
| Thickness | SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules |
| API 5L X52 Line Pipe Length | Single Random, Double Random & Required Length, Custom Size - 12 Meter lengths |
| Api 5l X52 Psl2 Pipe Finishes | Bare, Oiled, Mill Varnish, Galv, FBE, FBE Dual, 3LPE, 3LPP, Coal Tar, Concrete Coating and Tape Wrap.End Finishes:Beveled, Square Cut, Threaded & Coupled. |
| Other suppliers of API 5L X52 Seamless steel pipe | MSL, JSL, ISMT, USL, BAO, Lontrin, SMTM, TNRS and Wuxi |
| Product Specification Level (PSL) | API 5L X52 PSL 2 |
| API 5L X52 PSL 1 | |
| Api 5l X52 S355 Pipe Applications | Oil Refineries, Petrochemicals, Power Generation (Nuclear/Thermal), Steel, Sugar, Boiler Equipments, Pressure Vessels and General Engineering Purposes |
| Specialist In | Api 5l X52 Pipe Suppliers, Api 5l X52 Erw Pipe , Api 5l X52 Seamless Pipe Suppliers, Api 5l X52 Psl2 |
| Api 5l X52 Welded Pipe Value added service | Fusion Bond Epoxy |
| Galvanizing | |
| Sand Blasting | |
| Tar Epoxy | |
| Bending | |
| 3LPE | |
| Heat Treatment | |
| Machining | |
| Draw & Expansion as per required Size & Length etc. | |
| Annealed | |
| ARO | |
| Api 5l Grade X52 Carbon Steel Pipe Origin | Indian Origin, Japanese Origin, Korean Origin, European Origin, US Origin, Ukraine Origin, Russian Origin |
| BS EN 10208-2:2009 | API 5L X52 pipelines for combustible flu |
