API 5L Seamless Steel Pipe is a high-strength carbon steel pipe designed for the transportation of oil, natural gas, and other fluids in pipeline systems. It is widely used in the oil and gas industry, energy infrastructure, and large-scale pipeline projects due to its excellent strength and reliability.
Material Type :
API 5L Carbon Steel Line Pipe (Grades: B, X42, X46, X52, X56, X60, X65, X70)Outer Diameter Range :
21.3mm – 914mm (1/2" – 36")Wall Thickness Range :
2.0mm – 60mmCustomizable :
YesOrder(MOQ) :
2TSpecifications
API 5L seamless steel pipes are manufactured according to the standards of the American Petroleum Institute and are specifically designed for oil and gas pipeline transportation systems. These pipes provide high strength, good toughness, and reliable resistance to pressure, ensuring safe and stable performance in demanding environments.
The pipes are typically produced through hot rolling or cold drawing seamless manufacturing processes, which ensures uniform structure, high dimensional accuracy, and excellent pressure-bearing capability. Compared with welded pipes, seamless steel pipes offer superior structural integrity for critical pipeline applications.
API 5L seamless steel pipes are commonly supplied in grades such as Grade B, X42, X52, X60, and X65, which provide different levels of strength to meet various project requirements. Additional treatments such as heat treatment, anti-corrosion coating, and surface finishing can also be applied depending on the operating conditions.
Due to their strong mechanical properties and durability, API 5L seamless steel pipes are widely used in long-distance oil and gas pipelines, offshore pipeline systems, petrochemical transportation networks, and energy infrastructure projects. Their reliability and long service life make them an essential material for modern pipeline engineering.
API 5L Seamless Steel Pipe is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
| Grade | Grade Equivalent | Mechanical Properties | Size Range | Chemical Composition (Typical, %) |
|---|---|---|---|---|
| API 5L Gr.B | API 5L Grade B | Tensile ≥414 MPa
|
OD 10–610 mm
|
C≤0.28
|
| X42 | API 5L X42 | Tensile ≥432 MPa
|
OD 10–610 mm
|
C≤0.28
|
| X46 | API 5L X46 | Tensile ≥469 MPa
|
OD 10–610 mm
|
C≤0.28
|
| X52 | API 5L X52 | Tensile ≥496 MPa
|
OD 10–610 mm
|
C≤0.28
|
| X56 | API 5L X56 | Tensile ≥531 MPa
|
OD 10–610 mm
|
C≤0.26
|
| X60 | API 5L X60 | Tensile ≥565 MPa
|
OD 10–610 mm
|
C≤0.26
|
| X65 | API 5L X65 | Tensile ≥586 MPa
|
OD 10–610 mm
|
C≤0.26
|
| X70 | API 5L X70 | Tensile ≥621 MPa
|
OD 10–610 mm
|
C≤0.26
|
|
Note: If you do not find a API 5L Seamless Steel Pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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FAQs
Q: What types and standards of carbon steel do you mainly supply?
A: We mainly supply a wide range of carbon steel products including seamless and welded steel pipes, steel plates, coils, and bars. Common carbon steel grades include A36, A106, A53, API 5L, and S355, which are widely used in construction, machinery, and pipeline engineering. All carbon steel products comply with international standards such as ASTM, API, EN, and JIS. We can also provide corresponding material test certificates (MTC) and support customized specifications according to customer project requirements.
Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?
A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.
Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?
A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.
Q: What are your delivery times and logistics solutions for overseas customers?
A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.
Q: As a new customer, how do I begin cooperation? Can you provide samples for testing?
A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.
|
Note: If you do not find a API 5L Seamless Steel Pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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